{ "signal": "certvas-tender-award-concentration-v1", "name": "Certvas Tender-Award Concentration Signal", "version": "v1", "sku": "AF-TENDER", "label": "Published for research and informational use. Not administered as, and not for use as, a regulated benchmark.", "grain": "country_category_month", "point_in_time": "cell knowable at observed_at (awards are backfilled long after month); repeat-winner uses strictly earlier months only \u2014 no look-ahead", "snapshot_hash": "d7f29aa9b361f7e3", "caveats": [ "Point-in-time: a cell is knowable at observed_at (the latest award observation in it), NOT at month-end \u2014 OCDS awards are backfilled months or years after the tender's release month. Filter backtests on observed_at <= as_of; filtering on month would look ahead.", "month is the AWARD month where the publisher carries an award date and otherwise falls back to the tender's release month; award_date_coverage_pct reports that split per cell (0 = every award bucketed by release month). SA eTenders (S007) currently publishes no award dates.", "Suppliers are grouped by name exactly as published \u2014 no normalisation or entity resolution. Name variants of one legal entity therefore count as separate winners, which biases every HHI and top-supplier share DOWNWARD: real concentration is at least what is reported here, never less.", "total_award_value is NOMINAL as-published contract value (not annualised, not audited, not deflated) and is published only where a cell is single-currency; a mixed-currency cell reports null value metrics rather than summing across currencies. Awards with a null or non-positive value are excluded from value metrics and reported via value_disclosed_pct.", "HHI is on the 0-10000 convention (sum of squared percentage shares), matching the Procurement-Demand Signal. Cells with fewer than 5 awards are mechanically concentrated and are flagged thin_cell = true; filter them out before reading a competition level.", "repeat_winner_rate_pct and new_supplier_count compare against the loaded award history only. A supplier active before the earliest loaded month reads as new, and the earliest month of any (country, category) is 0% repeat by construction \u2014 the measure strengthens as history accretes.", "Concentration is an evidence-gathering screen, not a finding of wrongdoing: a concentrated cell can reflect a genuinely specialised market, a framework agreement, or a single large contract." ], "observations": [ { "country": "NG", "category": "unclassified", "month": "2001-01", "award_count": 113, "tender_count": 113, "supplier_count": 101, "new_supplier_count": 101, "effective_supplier_count": 81.3, "supplier_hhi": 123.0, "supplier_hhi_value": 255.5, "top_supplier": "SLOPTECH ENGINEERING SERVICES LTD", "top_supplier_value_share_pct": 6.01, "top_supplier_award_share_pct": 0.88, "repeat_winner_rate_pct": 0.0, "total_award_value": 5028063528.06, "currency": "NGN", "value_disclosed_pct": 98.2, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2001-05", "award_count": 1, "tender_count": 1, "supplier_count": 1, "new_supplier_count": 1, "effective_supplier_count": 1.0, "supplier_hhi": 10000.0, "supplier_hhi_value": 10000.0, "top_supplier": "MARVELOUS MIKE PRESS LIMITED", "top_supplier_value_share_pct": 100.0, "top_supplier_award_share_pct": 100.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 1680000.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2005-04", "award_count": 1, "tender_count": 1, "supplier_count": 1, "new_supplier_count": 1, "effective_supplier_count": 1.0, "supplier_hhi": 10000.0, "supplier_hhi_value": 10000.0, "top_supplier": "TOKS LTD", "top_supplier_value_share_pct": 100.0, "top_supplier_award_share_pct": 100.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 400000000.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2009-06", "award_count": 1, "tender_count": 1, "supplier_count": 1, "new_supplier_count": 1, "effective_supplier_count": 1.0, "supplier_hhi": 10000.0, "supplier_hhi_value": 10000.0, "top_supplier": "Greengrove Integrated Services Ltd", "top_supplier_value_share_pct": 100.0, "top_supplier_award_share_pct": 100.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 2441250.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2010-06", "award_count": 17, "tender_count": 17, "supplier_count": 16, "new_supplier_count": 16, "effective_supplier_count": 15.21, "supplier_hhi": 657.4, "supplier_hhi_value": 10000.0, "top_supplier": "okafor & son", "top_supplier_value_share_pct": 100.0, "top_supplier_award_share_pct": 5.88, "repeat_winner_rate_pct": 0.0, "total_award_value": 11000000.0, "currency": "NGN", "value_disclosed_pct": 5.9, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2010-08", "award_count": 3, "tender_count": 3, "supplier_count": 3, "new_supplier_count": 3, "effective_supplier_count": 3.0, "supplier_hhi": 3333.3, "supplier_hhi_value": 5388.3, "top_supplier": "GIDDATO NIG LTD", "top_supplier_value_share_pct": 63.99, "top_supplier_award_share_pct": 33.33, "repeat_winner_rate_pct": 0.0, "total_award_value": 3058138016.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2010-09", "award_count": 1, "tender_count": 1, "supplier_count": 1, "new_supplier_count": 1, "effective_supplier_count": 1.0, "supplier_hhi": 10000.0, "supplier_hhi_value": 10000.0, "top_supplier": "OKUNS NIG LTD", "top_supplier_value_share_pct": 100.0, "top_supplier_award_share_pct": 100.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 5000000000.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2010-10", "award_count": 1, "tender_count": 1, "supplier_count": 1, "new_supplier_count": 1, "effective_supplier_count": 1.0, "supplier_hhi": 10000.0, "supplier_hhi_value": 10000.0, "top_supplier": "EMIRATES SYSYTEM LIMITED", "top_supplier_value_share_pct": 100.0, "top_supplier_award_share_pct": 100.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 2471772.25, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2011-03", "award_count": 1, "tender_count": 1, "supplier_count": 1, "new_supplier_count": 1, "effective_supplier_count": 1.0, "supplier_hhi": 10000.0, "supplier_hhi_value": 10000.0, "top_supplier": "Civencom Nigeria Ltd", "top_supplier_value_share_pct": 100.0, "top_supplier_award_share_pct": 100.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 177507984.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2011-09", "award_count": 1, "tender_count": 1, "supplier_count": 1, "new_supplier_count": 1, "effective_supplier_count": 1.0, "supplier_hhi": 10000.0, "supplier_hhi_value": 10000.0, "top_supplier": "LAMPERS ENGINEERING & CONSTRUCTION LIMITED", "top_supplier_value_share_pct": 100.0, "top_supplier_award_share_pct": 100.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 70470424.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2011-11", "award_count": 1, "tender_count": 1, "supplier_count": 1, "new_supplier_count": 1, "effective_supplier_count": 1.0, "supplier_hhi": 10000.0, "supplier_hhi_value": 10000.0, "top_supplier": "E J WORUKWO & CO. NIG. LTD", "top_supplier_value_share_pct": 100.0, "top_supplier_award_share_pct": 100.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 244356128.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2012-05", "award_count": 4, "tender_count": 4, "supplier_count": 4, "new_supplier_count": 4, "effective_supplier_count": 4.0, "supplier_hhi": 2500.0, "supplier_hhi_value": 2576.3, "top_supplier": "MOGA MARO PRIME INVESTMENT LIMITED", "top_supplier_value_share_pct": 27.76, "top_supplier_award_share_pct": 25.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 119333578.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2014-03", "award_count": 1, "tender_count": 1, "supplier_count": 1, "new_supplier_count": 1, "effective_supplier_count": 1.0, "supplier_hhi": 10000.0, "supplier_hhi_value": 10000.0, "top_supplier": "DONEX TECHNICAL SERVICES LTD", "top_supplier_value_share_pct": 100.0, "top_supplier_award_share_pct": 100.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 97736304.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2016-01", "award_count": 1, "tender_count": 1, "supplier_count": 1, "new_supplier_count": 1, "effective_supplier_count": 1.0, "supplier_hhi": 10000.0, "supplier_hhi_value": 10000.0, "top_supplier": "INTER GLOBAL PROJECTS SERVICES LTD", "top_supplier_value_share_pct": 100.0, "top_supplier_award_share_pct": 100.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 43480000.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2016-04", "award_count": 2, "tender_count": 2, "supplier_count": 2, "new_supplier_count": 2, "effective_supplier_count": 2.0, "supplier_hhi": 5000.0, "supplier_hhi_value": 8983.9, "top_supplier": "M/S ATTAHIR ENTERPRISES NIG. LTD", "top_supplier_value_share_pct": 94.63, "top_supplier_award_share_pct": 50.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 151935344.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2016-08", "award_count": 2, "tender_count": 2, "supplier_count": 2, "new_supplier_count": 2, "effective_supplier_count": 2.0, "supplier_hhi": 5000.0, "supplier_hhi_value": 5629.8, "top_supplier": "SEPSAL NIGERIA LIMITED", "top_supplier_value_share_pct": 67.75, "top_supplier_award_share_pct": 50.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 325538560.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2016-11", "award_count": 3, "tender_count": 3, "supplier_count": 3, "new_supplier_count": 3, "effective_supplier_count": 3.0, "supplier_hhi": 3333.3, "supplier_hhi_value": 4017.1, "top_supplier": "M/S JOMA INVESTMENT LTD", "top_supplier_value_share_pct": 44.01, "top_supplier_award_share_pct": 33.33, "repeat_winner_rate_pct": 0.0, "total_award_value": 88866104.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2016-12", "award_count": 1, "tender_count": 1, "supplier_count": 1, "new_supplier_count": 1, "effective_supplier_count": 1.0, "supplier_hhi": 10000.0, "supplier_hhi_value": 10000.0, "top_supplier": "DE UBONGOS INTEGRATED SERVICES LIMITED", "top_supplier_value_share_pct": 100.0, "top_supplier_award_share_pct": 100.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 11904288.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2017-01", "award_count": 7, "tender_count": 7, "supplier_count": 7, "new_supplier_count": 7, "effective_supplier_count": 7.0, "supplier_hhi": 1428.6, "supplier_hhi_value": 2613.8, "top_supplier": "seeminai engr. Ltd", "top_supplier_value_share_pct": 42.55, "top_supplier_award_share_pct": 14.29, "repeat_winner_rate_pct": 0.0, "total_award_value": 489867833.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2017-02", "award_count": 6, "tender_count": 6, "supplier_count": 6, "new_supplier_count": 6, "effective_supplier_count": 6.0, "supplier_hhi": 1666.7, "supplier_hhi_value": 8734.2, "top_supplier": "Rockbridge Construction Nigeria Limited", "top_supplier_value_share_pct": 93.36, "top_supplier_award_share_pct": 16.67, "repeat_winner_rate_pct": 0.0, "total_award_value": 6895042606.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2017-03", "award_count": 11, "tender_count": 11, "supplier_count": 10, "new_supplier_count": 9, "effective_supplier_count": 9.31, "supplier_hhi": 1074.4, "supplier_hhi_value": 2475.3, "top_supplier": "M/S EKORUDA NIG LTD", "top_supplier_value_share_pct": 37.56, "top_supplier_award_share_pct": 9.09, "repeat_winner_rate_pct": 9.09, "total_award_value": 773868997.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2017-04", "award_count": 18, "tender_count": 18, "supplier_count": 17, "new_supplier_count": 17, "effective_supplier_count": 16.2, "supplier_hhi": 617.3, "supplier_hhi_value": 902.7, "top_supplier": "SKY TECH CONSTRUCTION COMPANY LTD", "top_supplier_value_share_pct": 16.24, "top_supplier_award_share_pct": 5.56, "repeat_winner_rate_pct": 0.0, "total_award_value": 1992210512.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2017-05", "award_count": 3, "tender_count": 3, "supplier_count": 3, "new_supplier_count": 3, "effective_supplier_count": 3.0, "supplier_hhi": 3333.3, "supplier_hhi_value": 4085.7, "top_supplier": "G-MANAKI ENGINEERING LTD", "top_supplier_value_share_pct": 51.22, "top_supplier_award_share_pct": 33.33, "repeat_winner_rate_pct": 0.0, "total_award_value": 35601055.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": true, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2017-06", "award_count": 9, "tender_count": 9, "supplier_count": 9, "new_supplier_count": 9, "effective_supplier_count": 9.0, "supplier_hhi": 1111.1, "supplier_hhi_value": 8657.3, "top_supplier": "IDT Construction Ltd & Raycon & Co. Nig. Ltd", "top_supplier_value_share_pct": 92.97, "top_supplier_award_share_pct": 11.11, "repeat_winner_rate_pct": 0.0, "total_award_value": 2153796263.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2017-07", "award_count": 16, "tender_count": 16, "supplier_count": 16, "new_supplier_count": 15, "effective_supplier_count": 16.0, "supplier_hhi": 625.0, "supplier_hhi_value": 2158.9, "top_supplier": "BEE-HARRIS INVESTMENT LTD", "top_supplier_value_share_pct": 30.77, "top_supplier_award_share_pct": 6.25, "repeat_winner_rate_pct": 6.25, "total_award_value": 562630589.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2017-08", "award_count": 10, "tender_count": 10, "supplier_count": 10, "new_supplier_count": 8, "effective_supplier_count": 10.0, "supplier_hhi": 1000.0, "supplier_hhi_value": 2973.0, "top_supplier": "ALEX & DAUGHTERS", "top_supplier_value_share_pct": 48.35, "top_supplier_award_share_pct": 10.0, "repeat_winner_rate_pct": 20.0, "total_award_value": 281267679.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2017-09", "award_count": 26, "tender_count": 26, "supplier_count": 22, "new_supplier_count": 21, "effective_supplier_count": 19.88, "supplier_hhi": 503.0, "supplier_hhi_value": 1210.2, "top_supplier": "Messrs Wise Skills Ltd", "top_supplier_value_share_pct": 18.6, "top_supplier_award_share_pct": 3.85, "repeat_winner_rate_pct": 3.85, "total_award_value": 1241882959.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2017-10", "award_count": 20, "tender_count": 20, "supplier_count": 20, "new_supplier_count": 20, "effective_supplier_count": 20.0, "supplier_hhi": 500.0, "supplier_hhi_value": 1639.5, "top_supplier": "Jaid Construction Properties Ltd", "top_supplier_value_share_pct": 21.82, "top_supplier_award_share_pct": 5.0, "repeat_winner_rate_pct": 0.0, "total_award_value": 1141194084.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2017-11", "award_count": 9, "tender_count": 9, "supplier_count": 9, "new_supplier_count": 9, "effective_supplier_count": 9.0, "supplier_hhi": 1111.1, "supplier_hhi_value": 1358.0, "top_supplier": "DEBBY INDUSTREIS LIMITED", "top_supplier_value_share_pct": 15.2, "top_supplier_award_share_pct": 11.11, "repeat_winner_rate_pct": 0.0, "total_award_value": 295566184.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2017-12", "award_count": 60, "tender_count": 60, "supplier_count": 54, "new_supplier_count": 50, "effective_supplier_count": 50.0, "supplier_hhi": 200.0, "supplier_hhi_value": 428.0, "top_supplier": "GOLDMATE GLOBAL SERVICES LTD", "top_supplier_value_share_pct": 9.37, "top_supplier_award_share_pct": 1.67, "repeat_winner_rate_pct": 6.67, "total_award_value": 1055235192.12, "currency": "NGN", "value_disclosed_pct": 98.3, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2018-01", "award_count": 44, "tender_count": 44, "supplier_count": 38, "new_supplier_count": 37, "effective_supplier_count": 34.57, "supplier_hhi": 289.3, "supplier_hhi_value": 4423.3, "top_supplier": "Raynolds Construction Company Limited", "top_supplier_value_share_pct": 53.71, "top_supplier_award_share_pct": 2.27, "repeat_winner_rate_pct": 2.27, "total_award_value": 26821515124.88, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2018-02", "award_count": 109, "tender_count": 109, "supplier_count": 92, "new_supplier_count": 87, "effective_supplier_count": 66.36, "supplier_hhi": 150.7, "supplier_hhi_value": 615.0, "top_supplier": "ICST Solutions Limited", "top_supplier_value_share_pct": 19.06, "top_supplier_award_share_pct": 0.92, "repeat_winner_rate_pct": 10.09, "total_award_value": 3445103908.06, "currency": "NGN", "value_disclosed_pct": 93.6, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2018-03", "award_count": 65, "tender_count": 65, "supplier_count": 53, "new_supplier_count": 47, 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"tender_count": 517, "supplier_count": 476, "new_supplier_count": 382, "effective_supplier_count": 438.6, "supplier_hhi": 22.8, "supplier_hhi_value": 1315.3, "top_supplier": "Rien Chemie Nig Ltd", "top_supplier_value_share_pct": 35.4, "top_supplier_award_share_pct": 0.39, "repeat_winner_rate_pct": 20.7, "total_award_value": 35295829449.0, "currency": "NGN", "value_disclosed_pct": 89.2, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2020-12", "award_count": 257, "tender_count": 257, "supplier_count": 190, "new_supplier_count": 119, "effective_supplier_count": 70.77, "supplier_hhi": 141.3, "supplier_hhi_value": 297.3, "top_supplier": "DCL Laboratory Products Limited", "top_supplier_value_share_pct": 9.32, "top_supplier_award_share_pct": 7.0, "repeat_winner_rate_pct": 50.58, "total_award_value": 9817106920.25, "currency": "NGN", "value_disclosed_pct": 99.6, "award_date_coverage_pct": 100.0, 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"repeat_winner_rate_pct": 24.14, "total_award_value": 2427456551.12, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2021-03", "award_count": 96, "tender_count": 96, "supplier_count": 92, "new_supplier_count": 76, "effective_supplier_count": 88.65, "supplier_hhi": 112.8, "supplier_hhi_value": 422.3, "top_supplier": "RCE Overseas energy & construction ltd", "top_supplier_value_share_pct": 9.78, "top_supplier_award_share_pct": 1.04, "repeat_winner_rate_pct": 18.75, "total_award_value": 7284602853.25, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2021-04", "award_count": 61, "tender_count": 61, "supplier_count": 54, "new_supplier_count": 47, "effective_supplier_count": 48.33, "supplier_hhi": 206.9, "supplier_hhi_value": 691.2, "top_supplier": "ROCKWATERS NIG LTD", "top_supplier_value_share_pct": 15.82, "top_supplier_award_share_pct": 3.28, "repeat_winner_rate_pct": 11.48, "total_award_value": 4669425706.38, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2021-05", "award_count": 375, "tender_count": 375, "supplier_count": 336, "new_supplier_count": 259, "effective_supplier_count": 293.26, "supplier_hhi": 34.1, "supplier_hhi_value": 131.8, "top_supplier": "Megastar Construction Company Limitedfor NCT FM and RCE Overseas Limited for FM for power plant", "top_supplier_value_share_pct": 7.92, "top_supplier_award_share_pct": 0.27, "repeat_winner_rate_pct": 24.8, "total_award_value": 27692906095.17, "currency": "NGN", "value_disclosed_pct": 98.9, "award_date_coverage_pct": 52.5, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2021-06", "award_count": 132, "tender_count": 132, "supplier_count": 125, "new_supplier_count": 97, "effective_supplier_count": 119.33, "supplier_hhi": 83.8, "supplier_hhi_value": 1819.1, "top_supplier": "M SULUM NIGERIA LIMITED", "top_supplier_value_share_pct": 27.26, "top_supplier_award_share_pct": 0.76, "repeat_winner_rate_pct": 21.97, "total_award_value": 90797823592.75, "currency": "NGN", "value_disclosed_pct": 98.5, "award_date_coverage_pct": 87.1, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2021-07", "award_count": 98, "tender_count": 98, "supplier_count": 94, "new_supplier_count": 70, "effective_supplier_count": 90.58, "supplier_hhi": 110.4, "supplier_hhi_value": 1162.5, "top_supplier": "ABK& SOS NIG. LTD", "top_supplier_value_share_pct": 31.97, "top_supplier_award_share_pct": 1.02, "repeat_winner_rate_pct": 26.53, "total_award_value": 10055768015.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2021-08", "award_count": 244, "tender_count": 244, "supplier_count": 228, "new_supplier_count": 169, "effective_supplier_count": 214.13, "supplier_hhi": 46.7, "supplier_hhi_value": 154.4, "top_supplier": "MUDPHA", "top_supplier_value_share_pct": 6.69, "top_supplier_award_share_pct": 0.41, "repeat_winner_rate_pct": 26.23, "total_award_value": 14950904951.0, "currency": "NGN", "value_disclosed_pct": 98.0, "award_date_coverage_pct": 54.5, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2021-09", "award_count": 603, "tender_count": 603, "supplier_count": 557, "new_supplier_count": 399, "effective_supplier_count": 515.46, "supplier_hhi": 19.4, "supplier_hhi_value": 217.3, "top_supplier": "PROBITY AND VISION LINKS LTD", "top_supplier_value_share_pct": 10.02, "top_supplier_award_share_pct": 0.17, "repeat_winner_rate_pct": 31.34, "total_award_value": 41929868917.5, "currency": "NGN", "value_disclosed_pct": 99.7, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2021-10", "award_count": 577, "tender_count": 577, "supplier_count": 517, "new_supplier_count": 390, "effective_supplier_count": 411.52, "supplier_hhi": 24.3, "supplier_hhi_value": 75.4, "top_supplier": "ADAP CONSULT LTD", "top_supplier_value_share_pct": 2.94, "top_supplier_award_share_pct": 1.91, "repeat_winner_rate_pct": 26.34, "total_award_value": 32145232546.5, "currency": "NGN", "value_disclosed_pct": 99.8, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2021-11", "award_count": 173, "tender_count": 173, "supplier_count": 164, "new_supplier_count": 116, "effective_supplier_count": 156.74, "supplier_hhi": 63.8, "supplier_hhi_value": 197.2, "top_supplier": "AFDIN CONSTRUCTION LTD", "top_supplier_value_share_pct": 7.85, "top_supplier_award_share_pct": 0.58, "repeat_winner_rate_pct": 29.48, "total_award_value": 13032329853.25, "currency": "NGN", "value_disclosed_pct": 98.8, "award_date_coverage_pct": 92.5, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2021-12", "award_count": 142, "tender_count": 142, "supplier_count": 130, "new_supplier_count": 98, "effective_supplier_count": 118.62, "supplier_hhi": 84.3, "supplier_hhi_value": 242.2, "top_supplier": "Adroit Landstyle Limited", "top_supplier_value_share_pct": 6.54, "top_supplier_award_share_pct": 1.41, "repeat_winner_rate_pct": 24.65, "total_award_value": 7399506441.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2022-01", "award_count": 51, "tender_count": 51, "supplier_count": 47, "new_supplier_count": 36, "effective_supplier_count": 44.09, "supplier_hhi": 226.8, "supplier_hhi_value": 2296.9, "top_supplier": "ISMADE INTERGRATED NIG.LTD.", "top_supplier_value_share_pct": 45.02, "top_supplier_award_share_pct": 1.96, "repeat_winner_rate_pct": 23.53, "total_award_value": 5289113752.25, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2022-02", "award_count": 115, "tender_count": 115, "supplier_count": 109, "new_supplier_count": 88, "effective_supplier_count": 102.56, "supplier_hhi": 97.5, "supplier_hhi_value": 2430.6, "top_supplier": "Vipan Gloabal Inestment Resourses Ltd", "top_supplier_value_share_pct": 46.27, "top_supplier_award_share_pct": 0.87, "repeat_winner_rate_pct": 20.87, "total_award_value": 11788289202.75, "currency": "NGN", "value_disclosed_pct": 99.1, "award_date_coverage_pct": 98.3, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2022-03", "award_count": 186, "tender_count": 186, "supplier_count": 177, "new_supplier_count": 134, "effective_supplier_count": 169.49, "supplier_hhi": 59.0, "supplier_hhi_value": 1392.5, "top_supplier": "MufhAB global concept limited", "top_supplier_value_share_pct": 33.95, "top_supplier_award_share_pct": 0.54, "repeat_winner_rate_pct": 23.66, "total_award_value": 34454134423.5, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 93.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2022-04", "award_count": 141, "tender_count": 141, "supplier_count": 136, "new_supplier_count": 113, "effective_supplier_count": 129.87, "supplier_hhi": 77.0, "supplier_hhi_value": 7937.0, "top_supplier": "L.B. ATAKE NIG. LTD", "top_supplier_value_share_pct": 89.03, "top_supplier_award_share_pct": 0.71, "repeat_winner_rate_pct": 18.44, "total_award_value": 195429761605.5, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 90.1, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2022-05", "award_count": 231, "tender_count": 231, "supplier_count": 198, "new_supplier_count": 164, "effective_supplier_count": 156.49, "supplier_hhi": 63.9, "supplier_hhi_value": 1070.9, "top_supplier": "AMAFAR INTEGRATED CONCEPTS LTD", "top_supplier_value_share_pct": 29.29, "top_supplier_award_share_pct": 0.43, "repeat_winner_rate_pct": 18.18, "total_award_value": 22383757022.75, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 99.6, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2022-06", "award_count": 38, "tender_count": 38, "supplier_count": 35, "new_supplier_count": 27, "effective_supplier_count": 32.82, "supplier_hhi": 304.7, "supplier_hhi_value": 904.2, "top_supplier": "SYNERCOM LIMITED", "top_supplier_value_share_pct": 17.79, "top_supplier_award_share_pct": 2.63, "repeat_winner_rate_pct": 26.32, "total_award_value": 3112549562.0, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2022-07", "award_count": 207, "tender_count": 207, "supplier_count": 197, "new_supplier_count": 158, "effective_supplier_count": 188.68, "supplier_hhi": 53.0, "supplier_hhi_value": 182.9, "top_supplier": "ASEN PHARMACEUTICAL LIMITED", "top_supplier_value_share_pct": 6.45, "top_supplier_award_share_pct": 0.48, "repeat_winner_rate_pct": 19.32, "total_award_value": 15493511226.75, "currency": "NGN", "value_disclosed_pct": 100.0, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2022-08", "award_count": 343, "tender_count": 343, "supplier_count": 308, "new_supplier_count": 251, "effective_supplier_count": 277.01, "supplier_hhi": 36.1, "supplier_hhi_value": 9445.0, "top_supplier": "M/S Turaki Trading Company Ltd", "top_supplier_value_share_pct": 97.18, "top_supplier_award_share_pct": 0.29, "repeat_winner_rate_pct": 20.7, "total_award_value": 1033255185886.0, "currency": "NGN", "value_disclosed_pct": 99.4, "award_date_coverage_pct": 100.0, "thin_cell": false, "observed_at": "2026-09-01" }, { "country": "NG", "category": "unclassified", "month": "2022-09", "award_count": 460, "tender_count": 460, "supplier_count": 422, "new_supplier_count": 355, "effective_supplier_count": 389.11, "supplier_hhi": 25.7, "supplier_hhi_value": 881.0, "top_supplier": "First seromatic ventures Ltd. Zamab Muiltiservice Nig Ltd. Samjaz resources service Ltd. 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