CORE & MAIN INC CNM
CL A · Common Stock · CUSIP 21874C102 · ISIN US21874C1027
Infrastructure (water, wastewater, storm drainage and fire protection) limited partnership company
- SectorIndustrials
- IndustryWholesale-Durable Goods, NEC
- HeadquartersSt. Louis, MO
- Founded2017
- Websitecoreandmain.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($6.4m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $60.27. Options: 15 managers hold calls ($72.5m notional), 10 hold puts ($23.7m).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 170 |
| Q4 2022 | 168 |
| Q1 2023 | 181 |
| Q2 2023 | 224 |
| Q3 2023 | 266 |
| Q4 2023 | 365 |
| Q1 2024 | 431 |
| Q2 2024 | 421 |
| Q3 2024 | 390 |
| Q4 2024 | 416 |
| Q1 2025 | 423 |
| Q2 2025 | 448 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 187 | 81 |
| Q4 2023 | 240 | 115 |
| Q1 2024 | 276 | 156 |
| Q2 2024 | 220 | 216 |
| Q3 2024 | 193 | 240 |
| Q4 2024 | 208 | 191 |
| Q1 2025 | 195 | 218 |
| Q2 2025 | 210 | 217 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $19.4m | $24.5m | 1.26 |
| Q4 2024 | $29.5m | $20.2m | 0.68 |
| Q1 2025 | $44.5m | $32.7m | 0.74 |
| Q2 2025 | $72.5m | $23.7m | 0.33 |
Biggest buyers
| MORGAN STANLEY | Added | +5.2m |
| Capital World Investors | New | +1.5m |
| D1 Capital Partners L.P. | Added | +1.1m |
| ROYAL BANK OF CANADA | Added | +705.5k |
| FERNBRIDGE CAPITAL MANAGEMENT LP | Added | +689.2k |
| MAPLELANE CAPITAL, LLC | New | +559.6k |
| Freestone Grove Partners LP | New | +423.4k |
| Allspring Global Investments Holdings, LLC | New | +415.4k |
| BANK OF AMERICA CORP /DE/ | Added | +385.7k |
| FIL Ltd | New | +361.0k |
Biggest sellers
| BlackRock, Inc. | Reduced | -2.8m |
| Invesco Ltd. | Reduced | -1.6m |
| Anomaly Capital Management, LP | Reduced | -1.5m |
| Select Equity Group, L.P. | Reduced | -1.4m |
| FMR LLC | Reduced | -838.3k |
| Robeco Schweiz AG | Reduced | -772.6k |
| Skandinaviska Enskilda Banken AB (publ) | Reduced | -615.7k |
| Interval Partners, LP | Reduced | -563.3k |
| LORD, ABBETT & CO. LLC | Reduced | -539.7k |
| FIDUCIARY MANAGEMENT INC /WI/ | Reduced | -530.0k |
Biggest calls
| Interval Partners, LP | New | $33.2m549.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $9.6m159.9k shares |
| CITADEL ADVISORS LLC | Added | $8.6m143.1k shares |
| JANE STREET GROUP, LLC | Reduced | $4.3m71.0k shares |
| Walleye Trading LLC | Added | $4.0m66.9k shares |
| SIMPLEX TRADING, LLC | Reduced | $2.4m39.2k shares |
| Jefferies Financial Group Inc. | Unchanged | $2.1m35.0k shares |
| Twin Tree Management, LP | New | $2.0m33.4k shares |
| GROUP ONE TRADING LLC | Added | $1.9m32.1k shares |
| IMC-Chicago, LLC | Added | $1.9m31.3k shares |
Biggest puts
| Twin Tree Management, LP | New | $14.5m240.1k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $6.7m110.6k shares |
| CITADEL ADVISORS LLC | Reduced | $1.1m18.1k shares |
| IMC-Chicago, LLC | Reduced | $603.5k10.0k shares |
| WOLVERINE TRADING, LLC | Reduced | $464.8k7.7k shares |
| SIMPLEX TRADING, LLC | Reduced | $235.0k3.9k shares |
| PEAK6 LLC | New | $48.3k800 shares |
| Walleye Trading LLC | Reduced | $24.1k400 shares |
| GROUP ONE TRADING LLC | Reduced | $18.1k300 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution +0.1 pts · filed 2026-04-07 | 10.1% |
| Capital World Investors 13G · institution new · filed 2026-05-14 | 6.2% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.3% |
Fell to 5% or below in the last year: MORGAN STANLEY (2.7%, 2026-05-11), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD CAPITAL MANAGEMENT LLC), Select Equity Group, L.P. (4.1%, 2026-02-17)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 3 | $3.1m | $3.1m |
| Q4 2023 | 0 | — | 4 | $7.7m | $7.7m |
| Q1 2024 | 0 | — | 7 | $33.5m | $30.6m |
| Q2 2024 | 0 | — | 3 | $9.4m | $9.4m |
| Q3 2024 | 0 | — | 2 | $2.6m | $2.6m |
| Q4 2024 | 0 | — | 4 | $15.9m | $15.9m |
| Q1 2025 | 0 | — | 3 | $12.9m | $12.9m |
| Q2 2025 | 0 | — | 4 | $10.5m | $10.5m |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-06-09 | Whittenburg Mark G General Counsel and Secretary | Sold plan | $2.9m49.1k shares |
| 2025-06-06 | Whittenburg Mark G General Counsel and Secretary | Sold plan | $54.0k900 shares |
| 2025-06-03 | Schneider Laura K Chief Human Resources Officer | Sold plan | $2.6m45.7k shares |
| 2025-05-28 | Schaller John R Executive Vice President | Sold plan | $538.7k9.8k shares |
| 2025-04-29 | Stephens John Weldon Chief Accounting Officer | Sold plan | $1.7m31.8k shares |
| 2025-04-28 | Stephens John Weldon Chief Accounting Officer | Sold plan | $541.5k10.2k shares |
| 2025-04-02 | Stephens John Weldon Chief Accounting Officer | Sold plan | $2.1m42.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.02% of their portfolio | 19.1m $1.2bn | Reduced -2.8m |
| VANGUARD GROUP INC 0.02% of their portfolio | 17.8m $1.1bn | Reduced -81.0k |
| MORGAN STANLEY 0.06% of their portfolio | 15.8m $955.7m | Added +5.2m |
| Select Equity Group, L.P. 2.94% of their portfolio | 11.5m $692.0m | Reduced -1.4m |
| Pictet Asset Management Holding SA 0.47% of their portfolio | 7.7m $466.2m | Reduced -131.8k |
| D1 Capital Partners L.P. 5.04% of their portfolio | 6.0m $362.9m | Added +1.1m |
| FMR LLC 0.02% of their portfolio | 6.0m $359.1m | Reduced -838.3k |
| STATE STREET CORP 0.01% of their portfolio | 5.7m $346.9m | Reduced -176.1k |
| JANUS HENDERSON GROUP PLC 0.14% of their portfolio | 4.8m $292.1m | Reduced -4.7k |
| ROYAL LONDON ASSET MANAGEMENT LTD 0.60% of their portfolio | 4.3m $261.4m | Reduced -141.4k |
| Anomaly Capital Management, LP 7.14% of their portfolio | 3.7m $224.6m | Reduced -1.5m |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 3.5m $209.6m | Added +18.9k |
| FIRST TRUST ADVISORS LP 0.17% of their portfolio | 3.5m $209.2m | Reduced -117.6k |
| BESSEMER GROUP INC 0.33% of their portfolio | 3.4m $203.5m | Added +14.2k |
| Amundi 0.06% of their portfolio | 3.4m $187.0m | Added +92.4k |
| Impax Asset Management Group plc 1.11% of their portfolio | 3.2m $193.6m | Unchanged |
| Invesco Ltd. 0.03% of their portfolio | 3.1m $184.2m | Reduced -1.6m |
| Handelsbanken Fonder AB 0.60% of their portfolio | 2.8m $170.4m | Added +351.2k |
| SAMLYN CAPITAL, LLC 2.20% of their portfolio | 2.5m $151.7m | Reduced -11.3k |
| SPRUCE HOUSE INVESTMENT MANAGEMENT LLC 5.46% of their portfolio | 2.5m $147.9m | Unchanged |
| FIDUCIARY MANAGEMENT INC /WI/ 1.34% of their portfolio | 2.3m $139.5m | Reduced -530.0k |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 2.3m $138.0m | Reduced -517.5k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 2.3m $137.0m | Added +38.1k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 2.3m $136.1m | Added +385.7k |
| KBC Group NV 0.33% of their portfolio | 2.0m $122.0m | Added +296.4k |
| Liontrust Investment Partners LLP 1.72% of their portfolio | 2.0m $120.3m | Reduced -117.9k |
| RAYMOND JAMES FINANCIAL INC 0.04% of their portfolio | 2.0m $119.8m | Reduced -10.7k |
| NORGES BANK 0.01% of their portfolio | 1.9m $116.3m | Added +82.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 1.8m $108.3m | Added +13.2k |
| ALLIANCEBERNSTEIN L.P. 0.03% of their portfolio | 1.7m $101.5m | Reduced -189.6k |
| Artemis Investment Management LLP 1.29% of their portfolio | 1.7m $100.2m | Reduced -131.3k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 1.6m $96.5m | Reduced -81.3k |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.23% of their portfolio | 1.5m $92.9m | Added +86.1k |
| Capital World Investors 0.01% of their portfolio | 1.5m $90.9m | New |
| Forest Avenue Capital Management LP 7.08% of their portfolio | 1.5m $90.7m | Added +130.5k |
| JENNISON ASSOCIATES LLC 0.05% of their portfolio | 1.5m $88.9m | Added +339.4k |
| CDAM (UK) Ltd 13.98% of their portfolio | 1.4m $84.1m | Reduced -45.8k |
| Interval Partners, LP 1.68% of their portfolio | 1.2m $73.5m | Reduced -563.3k |
| Point72 Asset Management, L.P. 0.17% of their portfolio | 1.2m $71.1m | Added +15.3k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 1.1m $69.2m | Reduced -61.2k |
| AMERICAN CENTURY COMPANIES INC 0.04% of their portfolio | 1.1m $65.6m | Reduced -104.9k |
| FERNBRIDGE CAPITAL MANAGEMENT LP 3.08% of their portfolio | 1.1m $64.6m | Added +689.2k |
| Balyasny Asset Management L.P. 0.14% of their portfolio | 1.0m $63.1m | Added +160.9k |
| Robeco Schweiz AG 1.46% of their portfolio | 1.0m $63.0m | Reduced -772.6k |
| Swedbank AB 0.07% of their portfolio | 1.0m $62.8m | First filing |
| Nuveen, LLC 0.02% of their portfolio | 975.2k $58.9m | Added +63.9k |
| Camrose Capital Investment Partners LLP 14.51% of their portfolio | 960.4k $58.0m | Added +242.5k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 957.4k $57.8m | Added +705.5k |
| FEDERATED HERMES, INC. 0.11% of their portfolio | 924.8k $55.8m | Reduced -208.5k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 896.6k $54.1m | Added +42.5k |
| TRUIST FINANCIAL CORP 0.07% of their portfolio | 845.9k $51.1m | Added +140.6k |
| UBS Group AG 0.01% of their portfolio | 798.9k $48.2m | Reduced -98.8k |
| MACKENZIE FINANCIAL CORP 0.06% of their portfolio | 789.8k $47.7m | Added +163.4k |
| Hill City Capital, LP 2.51% of their portfolio | 774.2k $46.7m | Unchanged |
| ArrowMark Colorado Holdings LLC 0.81% of their portfolio | 746.9k $45.1m | Reduced -137.8k |
| Pembroke Management, LTD 5.24% of their portfolio | 718.3k $43.4m | Added +115.5k |
| Allianz Asset Management GmbH 0.06% of their portfolio | 715.0k $43.2m | Reduced -100.4k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.27% of their portfolio | 674.5k $40.7m | Reduced -105.4k |
| Legal & General Group Plc 0.01% of their portfolio | 637.2k $38.5m | Added +50.2k |
| DF DENT & CO INC 0.48% of their portfolio | 624.8k $37.7m | Reduced -175.3k |
| Border to Coast Pensions Partnership Ltd 0.67% of their portfolio | 604.1k $36.5m | Added +45.7k |
| GOODNOW INVESTMENT GROUP, LLC 3.15% of their portfolio | 559.9k $33.8m | Reduced -7.5k |
| MAPLELANE CAPITAL, LLC 2.08% of their portfolio | 559.6k $33.8m | New |
| RHUMBLINE ADVISERS 0.03% of their portfolio | 521.0k $31.4m | Reduced -7.9k |
| Driehaus Capital Management LLC 0.25% of their portfolio | 513.1k $31.0m | Added +31.0k |
| Raiffeisen Bank International AG 0.42% of their portfolio | 479.1k $28.4m | Added +7.0k |
| Local Pensions Partnership Investment Ltd 0.52% of their portfolio | 463.0k $27.9m | Added +55.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 456.0k $27.5m | Added +32.4k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.02% of their portfolio | 446.0k $26.9m | Reduced -5.2k |
| Davidson Kempner Capital Management LP 0.40% of their portfolio | 440.0k $26.6m | Not comparable |
| Walleye Capital LLC 0.24% of their portfolio | 433.4k $26.2m | Added +23.9k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 430.5k $26.0m | Reduced -9.6k |
| Freestone Grove Partners LP 0.19% of their portfolio | 423.4k $25.6m | New |
| Allspring Global Investments Holdings, LLC 0.04% of their portfolio | 415.4k $25.5m | New |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO 0.27% of their portfolio | 383.9k $23.2m | Unchanged |
| CI INVESTMENTS INC. 0.09% of their portfolio | 381.9k $23.0m | Added +46.5k |
| MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio | 371.8k $22.4m | Reduced -265.2k |
| California Public Employees Retirement System 0.01% of their portfolio | 366.0k $22.1m | Added +30.2k |
| Thematics Asset Management 0.99% of their portfolio | 364.0k $22.0m | Reduced -25.0k |
| Swiss National Bank 0.01% of their portfolio | 363.2k $21.9m | Reduced -5.3k |
| FIL Ltd 0.02% of their portfolio | 361.0k $21.8m | New |
| Schonfeld Strategic Advisors LLC 0.16% of their portfolio | 357.0k $21.5m | Reduced -366.8k |
| CITADEL ADVISORS LLC 0.02% of their portfolio | 325.3k $19.6m | Added +322.3k |
| D. E. Shaw & Co., Inc. 0.02% of their portfolio | 322.2k $19.4m | Reduced -298.5k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 313.7k $18.9m | Added +21.7k |
| BLI - Banque de Luxembourg Investments 0.54% of their portfolio | 312.3k $18.8m | Reduced -27.4k |
| Sea Cliff Partners Management, LP 6.38% of their portfolio | 310.0k $18.7m | Reduced -41.1k |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 306.2k $18.5m | Added +253.5k |
| PGGM Investments 0.31% of their portfolio | 298.5k $18.0m | New |
| LOOMIS SAYLES & CO L P 0.02% of their portfolio | 242.7k $14.6m | Added +27.2k |
| Perpetual Ltd 0.17% of their portfolio | 233.0k $14.1m | Added +9.3k |
| South Street Advisors LLC 2.08% of their portfolio | 232.4k $14.0m | Added +712 |
| Retirement Systems of Alabama 0.05% of their portfolio | 231.5k $14.0m | Added +13 |
| Polar Capital Holdings Plc 0.07% of their portfolio | 231.3k $14.0m | Added +3.1k |
| VOYA INVESTMENT MANAGEMENT LLC 0.01% of their portfolio | 230.5k $13.9m | Reduced -308.5k |
| Twin Tree Management, LP 0.35% of their portfolio | 228.7k $13.8m | New |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.41% of their portfolio | 226.6k $13.7m | Added +1.7k |
| Clear Harbor Asset Management, LLC 1.00% of their portfolio | 220.2k $13.3m | Reduced -5.3k |
| Grandeur Peak Global Advisors, LLC 1.59% of their portfolio | 218.3k $13.2m | Reduced -59.0k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 214.7k $13.0m | Reduced -12.0k |