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 ($10.2m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $49.54. Options: 10 managers hold calls ($23.8m notional), 6 hold puts ($3.0m).
Trends to Q1 2026
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 |
| Q3 2025 | 429 |
| Q4 2025 | 439 |
| Q1 2026 | 476 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 220 | 216 |
| Q3 2024 | 193 | 240 |
| Q4 2024 | 208 | 191 |
| Q1 2025 | 195 | 218 |
| Q2 2025 | 210 | 217 |
| Q3 2025 | 204 | 236 |
| Q4 2025 | 191 | 240 |
| Q1 2026 | 241 | 199 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $72.5m | $23.7m | 0.33 |
| Q3 2025 | $104.0m | $26.7m | 0.26 |
| Q4 2025 | $40.1m | $11.8m | 0.29 |
| Q1 2026 | $23.8m | $3.0m | 0.13 |
Biggest buyers
| Capital World Investors | Added | +5.3m |
| Point72 Asset Management, L.P. | Added | +2.1m |
| Findlay Park Partners LLP | New | +2.0m |
| D. E. Shaw & Co., Inc. | Added | +1.4m |
| Qube Research & Technologies Ltd | Added | +1.3m |
| Assenagon Asset Management S.A. | Added | +879.4k |
| JANE STREET GROUP, LLC | Added | +876.5k |
| RENAISSANCE TECHNOLOGIES LLC | New | +814.1k |
| FIRST TRUST ADVISORS LP | Added | +812.8k |
| AQR CAPITAL MANAGEMENT LLC | Added | +664.0k |
Biggest sellers
| MORGAN STANLEY | Reduced | -9.2m |
| D1 Capital Partners L.P. | Sold out | -2.6m |
| AMF Tjanstepension AB | Sold out | -1.3m |
| Hood River Capital Management LLC | Sold out | -1.3m |
| Holocene Advisors, LP | Reduced | -1.3m |
| JANUS HENDERSON GROUP PLC | Reduced | -1.2m |
| SAMLYN CAPITAL, LLC | Reduced | -1.1m |
| FMR LLC | Reduced | -951.2k |
| Pictet Asset Management Holding SA | Reduced | -926.8k |
| FIL Ltd | Reduced | -794.3k |
Biggest calls
| JANE STREET GROUP, LLC | Reduced | $7.3m148.7k shares |
| DENDUR CAPITAL LP | New | $4.9m100.0k shares |
| Cinctive Capital Management LP | New | $3.7m75.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $2.8m56.8k shares |
| GROUP ONE TRADING LLC | Reduced | $1.5m30.9k shares |
| CITADEL ADVISORS LLC | Reduced | $1.3m25.7k shares |
| Twin Tree Management, LP | Reduced | $968.2k19.6k shares |
| IMC-Chicago, LLC | Reduced | $923.8k18.7k shares |
| Walleye Trading LLC | Reduced | $266.8k5.4k shares |
| SIMPLEX TRADING, LLC | Reduced | $24.7k500 shares |
Biggest puts
| CITADEL ADVISORS LLC | Reduced | $1.3m26.4k shares |
| IMC-Chicago, LLC | Reduced | $760.8k15.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $548.3k11.1k shares |
| GROUP ONE TRADING LLC | Added | $251.9k5.1k shares |
| Walleye Trading LLC | Reduced | $123.5k2.5k shares |
| SIMPLEX TRADING, LLC | Reduced | $9.9k200 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 Q1 2026
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 |
|---|---|---|---|---|---|
| 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 |
| Q3 2025 | 0 | — | 5 | $26.3m | $18.6m |
| Q4 2025 | 0 | — | 0 | — | — |
| Q1 2026 | 0 | — | 0 | — | — |
None reported in Q1 2026.
Holders, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.02% of their portfolio | 19.2m $948.8m | Added +277.5k |
| Capital World Investors 0.08% of their portfolio | 11.6m $571.6m | Added +5.3m |
| VANGUARD CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 8.5m $418.2m | First filing |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.02% of their portfolio | 7.8m $386.3m | First filing |
| Select Equity Group, L.P. 1.91% of their portfolio | 7.3m $358.4m | Reduced -524.2k |
| Pictet Asset Management Holding SA 0.34% of their portfolio | 6.5m $321.8m | Reduced -926.8k |
| FIRST TRUST ADVISORS LP 0.22% of their portfolio | 6.1m $302.9m | Added +812.8k |
| STATE STREET CORP 0.01% of their portfolio | 5.8m $285.5m | Added +46.3k |
| ROYAL LONDON ASSET MANAGEMENT LTD 0.60% of their portfolio | 5.8m $284.2m | Added +64.1k |
| MORGAN STANLEY 0.02% of their portfolio | 5.4m $268.5m | Reduced -9.2m |
| FMR LLC 0.01% of their portfolio | 5.4m $266.9m | Reduced -951.2k |
| D. E. Shaw & Co., Inc. 0.15% of their portfolio | 3.8m $189.9m | Added +1.4m |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 3.8m $185.3m | Added +106.0k |
| JANUS HENDERSON GROUP PLC 0.08% of their portfolio | 3.4m $166.9m | Reduced -1.2m |
| Amundi 0.04% of their portfolio | 3.1m $150.7m | Reduced -11.8k |
| Impax Asset Management Group plc 0.98% of their portfolio | 2.9m $140.9m | Reduced -21.2k |
| Point72 Asset Management, L.P. 0.24% of their portfolio | 2.8m $140.4m | Added +2.1m |
| KBC Group NV 0.34% of their portfolio | 2.7m $135.3m | Added +119.1k |
| BESSEMER GROUP INC 0.21% of their portfolio | 2.7m $131.6m | Added +72.7k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 2.7m $131.4m | Added +152.1k |
| Invesco Ltd. 0.01% of their portfolio | 2.6m $130.7m | Reduced -272.1k |
| FIDUCIARY MANAGEMENT INC /WI/ 1.52% of their portfolio | 2.5m $122.6m | Reduced -130.4k |
| Camrose Capital Investment Partners LLP 14.66% of their portfolio | 2.3m $112.0m | Added +530.4k |
| SPRUCE HOUSE INVESTMENT MANAGEMENT LLC 3.79% of their portfolio | 2.1m $106.2m | Unchanged |
| Findlay Park Partners LLP 1.37% of their portfolio | 2.0m $98.6m | New |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 2.0m $96.5m | Added +92.6k |
| Forest Avenue Capital Management LP 5.65% of their portfolio | 1.8m $89.3m | Reduced -71.8k |
| SAMLYN CAPITAL, LLC 1.50% of their portfolio | 1.8m $87.5m | Reduced -1.1m |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 1.8m $84.1m | Reduced -104.3k |
| ALLIANCEBERNSTEIN L.P. 0.03% of their portfolio | 1.7m $88.2m | Reduced -94.2k |
| Qube Research & Technologies Ltd 0.12% of their portfolio | 1.7m $81.8m | Added +1.3m |
| Liontrust Investment Partners LLP 1.33% of their portfolio | 1.6m $78.2m | Reduced -147.8k |
| Interval Partners, LP 2.63% of their portfolio | 1.6m $76.6m | Added +322.2k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 1.5m $74.5m | Reduced -8.7k |
| RAYMOND JAMES FINANCIAL INC 0.02% of their portfolio | 1.3m $63.0m | Reduced -472.3k |
| Handelsbanken Fonder AB 0.21% of their portfolio | 1.3m $64.3m | Reduced -125.3k |
| CDAM (UK) Ltd 13.84% of their portfolio | 1.3m $62.4m | Reduced -13.3k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 1.2m $60.9m | Added +138.1k |
| VANGUARD FIDUCIARY TRUST CO 0.01% of their portfolio | 1.2m $58.8m | First filing |
| FERNBRIDGE CAPITAL MANAGEMENT LP 3.71% of their portfolio | 1.2m $57.9m | Reduced -373.6k |
| MACKENZIE FINANCIAL CORP 0.07% of their portfolio | 1.1m $55.3m | Added +350.8k |
| JANE STREET GROUP, LLC 0.05% of their portfolio | 989.6k $48.9m | Added +876.5k |
| TRUIST FINANCIAL CORP 0.06% of their portfolio | 947.1k $46.8m | Added +29.7k |
| Assenagon Asset Management S.A. 0.07% of their portfolio | 932.3k $46.1m | Added +879.4k |
| ACK Asset Management LLC 5.55% of their portfolio | 900.0k $44.5m | Unchanged |
| DENDUR CAPITAL LP 3.26% of their portfolio | 898.0k $44.4m | Unchanged |
| Hill City Capital, LP 1.53% of their portfolio | 867.6k $42.9m | Added +70.6k |
| UBS Group AG 0.01% of their portfolio | 857.4k $42.4m | Added +370.1k |
| Swedbank AB 0.04% of their portfolio | 853.0k $42.1m | Reduced -231.2k |
| Allianz Asset Management GmbH 0.05% of their portfolio | 829.3k $41.0m | Added +144.3k |
| RENAISSANCE TECHNOLOGIES LLC 0.06% of their portfolio | 814.1k $40.2m | New |
| Robeco Schweiz AG 0.79% of their portfolio | 760.8k $37.6m | Reduced -57.8k |
| GOODNOW INVESTMENT GROUP, LLC 4.08% of their portfolio | 754.0k $37.2m | Reduced -6.9k |
| FEDERATED HERMES, INC. 0.06% of their portfolio | 746.2k $36.9m | Reduced -21.9k |
| Balyasny Asset Management L.P. 0.07% of their portfolio | 738.7k $36.5m | Added +588.0k |
| AQR CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 730.8k $35.4m | Added +664.0k |
| Engineers Gate Manager LP 0.44% of their portfolio | 710.8k $35.1m | Added +612.3k |
| Pembroke Management, LTD 5.05% of their portfolio | 706.2k $34.9m | Reduced -189.6k |
| Nuveen, LLC 0.01% of their portfolio | 687.6k $34.0m | Added +134.0k |
| Legal & General Group Plc 0.01% of their portfolio | 655.3k $32.4m | Added +83.0k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.02% of their portfolio | 615.1k $30.4m | Added +214.7k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.22% of their portfolio | 610.2k $30.1m | Reduced -19.0k |
| MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio | 591.0k $29.2m | Added +121.3k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 584.3k $28.9m | Added +143.8k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 568.3k $28.1m | Reduced -8.2k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 562.4k $27.8m | Added +22.4k |
| NEUBERGER BERMAN GROUP LLC 0.02% of their portfolio | 521.9k $25.8m | Added +403.5k |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 510.6k $25.2m | Added +8.2k |
| DF DENT & CO INC 0.45% of their portfolio | 474.4k $23.4m | Reduced -27.2k |
| PGGM Investments 0.40% of their portfolio | 467.4k $23.1m | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.02% of their portfolio | 461.6k $22.8m | Reduced -25.0k |
| Zimmer Partners, LP 0.52% of their portfolio | 430.0k $21.2m | Added +230.0k |
| MIROVA 0.84% of their portfolio | 418.0k $20.6m | New |
| TUDOR INVESTMENT CORP ET AL 0.11% of their portfolio | 414.6k $20.5m | Added +78.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 406.7k $20.1m | Added +78.1k |
| Two Creeks Capital Management, LP 2.12% of their portfolio | 405.6k $20.0m | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 405.5k $20.0m | Reduced -477.4k |
| Local Pensions Partnership Investment Ltd 0.43% of their portfolio | 403.0k $19.9m | Reduced -140.0k |
| California Public Employees Retirement System 0.01% of their portfolio | 396.8k $19.6m | Reduced -13.2k |
| Swiss National Bank 0.01% of their portfolio | 373.9k $18.5m | Unchanged |
| CI INVESTMENTS INC. 0.09% of their portfolio | 358.2k $17.7m | Reduced -31.4k |
| DUFF & PHELPS INVESTMENT MANAGEMENT CO 0.18% of their portfolio | 357.1k $17.6m | Added +59 |
| Thrivent Financial for Lutherans 0.03% of their portfolio | 337.8k $16.7m | Added +9.4k |
| FIL Ltd 0.01% of their portfolio | 313.3k $15.5m | Reduced -794.3k |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.03% of their portfolio | 312.0k $15.4m | Reduced -48.4k |
| E. Ohman J:or Asset Management AB 0.41% of their portfolio | 310.5k $15.3m | Added +263.6k |
| HITE Hedge Asset Management LLC 0.85% of their portfolio | 303.6k $15.0m | New |
| JENNISON ASSOCIATES LLC 0.01% of their portfolio | 275.5k $13.6m | Reduced -500.1k |
| Polar Capital Holdings Plc 0.06% of their portfolio | 268.1k $13.2m | Added +6.0k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 259.1k $12.8m | Added +27.2k |
| Schonfeld Strategic Advisors LLC 0.10% of their portfolio | 252.8k $12.5m | Reduced -235.0k |
| Davidson Kempner Capital Management LP 0.22% of their portfolio | 250.0k $12.3m | Reduced -50.0k |
| Holocene Advisors, LP 0.03% of their portfolio | 247.5k $12.2m | Reduced -1.3m |
| SOROS FUND MANAGEMENT LLC 0.16% of their portfolio | 232.4k $11.5m | Reduced -202.0k |
| DNB Asset Management AS 0.04% of their portfolio | 232.2k $11.5m | Added +71.7k |
| Retirement Systems of Alabama 0.04% of their portfolio | 231.5k $11.4m | Added +2.6k |
| Rockefeller Capital Management L.P. 0.02% of their portfolio | 225.2k $11.1m | Reduced -15.5k |
| BLI - Banque de Luxembourg Investments 0.35% of their portfolio | 224.4k $11.7m | Unchanged |
| Perpetual Ltd 0.17% of their portfolio | 224.0k $11.1m | Added +3.5k |
| South Street Advisors LLC 1.58% of their portfolio | 220.7k $10.9m | Added +3.8k |