CORE & MAIN INC-CLASS A (CNM) Institutional Shareholders
CORE & MAIN INC-CLASS A (CNM) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $8.89B in CNM holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of CNM tracked by InsiderSet, reporting ownership valued at approximately $948.78M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $878.68M, representing an estimated loss of -7.39% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 46% of the total disclosed CNM value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Capital World Investors, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in CORE & MAIN INC-CLASS A (CNM).
This page ranks the largest institutional CNM shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
449
Total Reported Value
$8.89B
Largest Holder
Blackrock, Inc.
Largest Position
$948.78M
Insider Transactions (90d)
12
Latest Filing Quarter
Q2 2026
New Institutional Positions
60
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.02% | 19,206,024 | $948,777,609 | $878,675,598 | -$70,102,011 | -7.39% | |
| Capital World Investors | 0.08% | 11,571,392 | $571,626,765 | $529,391,184 | -$42,235,581 | -7.39% | |
| Vanguard Capital Management Llc | 0.01% | 8,465,825 | $418,211,755 | $387,311,494 | -$30,900,261 | -7.39% | |
| Vanguard Portfolio Management Llc | 0.02% | 7,819,539 | $386,285,227 | $357,743,909 | -$28,541,318 | -7.39% | |
| Select Equity Group, L.P. | 1.91% | 7,254,207 | $358,357,826 | $331,879,970 | -$26,477,856 | -7.39% | |
| First Trust Advisors Lp | 0.22% | 6,130,840 | $302,863,438 | $280,485,930 | -$22,377,508 | -7.39% | |
| State Street Corp | 0.01% | 5,779,777 | $285,520,984 | $264,424,798 | -$21,096,186 | -7.39% | |
| Royal London Asset Management Ltd | 0.60% | 5,752,701 | $284,183,429 | $263,186,071 | -$20,997,358 | -7.39% | |
| Morgan Stanley | 0.02% | 5,435,680 | $268,522,771 | $248,682,360 | -$19,840,411 | -7.39% | |
| Fmr Llc | 0.01% | 5,403,379 | $266,926,946 | $247,204,589 | -$19,722,357 | -7.39% | |
| Pictet Asset Management Holding Sa | 0.23% | 4,962,910 | $239,455,636 | $227,053,133 | -$12,402,504 | -5.18% | |
| D. E. Shaw & Co., Inc. | 0.15% | 3,843,372 | $189,862,576 | $175,834,269 | -$14,028,307 | -7.39% | |
| Geode Capital Management, Llc | 0.01% | 3,751,130 | $185,349,054 | $171,614,198 | -$13,734,857 | -7.41% | |
| Janus Henderson Group Plc | 0.08% | 3,377,281 | $166,867,185 | $154,510,606 | -$12,356,579 | -7.41% | |
| Amundi | 0.04% | 3,050,565 | $150,748,468 | $139,563,349 | -$11,185,119 | -7.42% | |
| Impax Asset Management Group Plc | 0.98% | 2,851,367 | $140,857,530 | $130,450,040 | -$10,407,490 | -7.39% | |
| Point72 Asset Management, L.P. | 0.24% | 2,841,248 | $140,357,651 | $129,987,096 | -$10,370,555 | -7.39% | |
| Dimensional Fund Advisors Lp | 0.03% | 2,661,022 | $131,425,130 | $121,741,757 | -$9,683,374 | -7.37% | |
| Invesco Ltd. | 0.02% | 2,645,256 | $130,675,648 | $121,020,462 | -$9,655,186 | -7.39% | |
| Fiduciary Management Inc | 1.52% | 2,482,510 | $122,635,994 | $113,574,833 | -$9,061,162 | -7.39% | |
| Camrose Capital Investment Partners Llp | 14.66% | 2,267,608 | $112,019,835 | $103,743,066 | -$8,276,769 | -7.39% | |
| Spruce House Investment Management Llc | 3.79% | 2,150,000 | $106,210,000 | $98,362,500 | -$7,847,500 | -7.39% | |
| Findlay Park Partners Llp | 1.37% | 1,996,728 | $98,638,363 | $91,350,306 | -$7,288,057 | -7.39% | |
| Charles Schwab Investment Management Inc | 0.01% | 1,953,197 | $96,487,932 | $89,358,763 | -$7,129,169 | -7.39% | |
| Liontrust Investment Partners Llp | 1.33% | 1,730,797 | $89,949,520 | $79,183,963 | -$10,765,557 | -11.97% | |
| Forest Avenue Capital Management Lp | 5.65% | 1,808,055 | $89,317,917 | $82,718,516 | -$6,599,401 | -7.39% | |
| Alliancebernstein L.P. | 0.03% | 1,696,348 | $88,159,206 | $77,607,921 | -$10,551,285 | -11.97% | |
| Samlyn Capital, Llc | 1.50% | 1,771,682 | $87,521,090 | $81,054,452 | -$6,466,639 | -7.39% | |
| Qube Research & Technologies Ltd | 0.12% | 1,656,137 | $81,813,168 | $75,768,268 | -$6,044,900 | -7.39% | |
| Interval Partners, Lp | 2.63% | 1,550,693 | $76,604,234 | $70,944,205 | -$5,660,029 | -7.39% | |
| Northern Trust Corp | 0.01% | 1,509,026 | $74,545,885 | $69,037,940 | -$5,507,946 | -7.39% | |
| Cdam (Uk) Ltd | 13.84% | 1,263,247 | $62,404,401 | $57,793,550 | -$4,610,851 | -7.39% | |
| Bank Of New York Mellon Corp | 0.01% | 1,231,839 | $60,852,833 | $56,356,634 | -$4,496,199 | -7.39% | |
| Vanguard Fiduciary Trust Co | 0.02% | 1,191,207 | $58,845,626 | $54,497,720 | -$4,347,906 | -7.39% | |
| Fernbridge Capital Management Lp | 3.71% | 1,172,949 | $57,943,681 | $53,662,417 | -$4,281,264 | -7.39% | |
| Mackenzie Financial Corp | 0.07% | 1,120,316 | $55,343,610 | $51,254,457 | -$4,089,153 | -7.39% | |
| Jane Street Group, Llc | 0.05% | 989,597 | $48,886,092 | $45,274,063 | -$3,612,029 | -7.39% | |
| Ack Asset Management Llc | 5.55% | 900,000 | $44,460,000 | $41,175,000 | -$3,285,000 | -7.39% | |
| Dendur Capital Lp | 3.26% | 898,000 | $44,361,200 | $41,083,500 | -$3,277,700 | -7.39% | |
| Hill City Capital, Lp | 1.53% | 867,600 | $42,859,440 | $39,692,700 | -$3,166,740 | -7.39% | |
| Ubs Group Ag | 0.01% | 857,414 | $42,356,252 | $39,226,691 | -$3,129,562 | -7.39% | |
| Allianz Asset Management Gmbh | 0.05% | 829,254 | $40,965,148 | $37,938,371 | -$3,026,778 | -7.39% | |
| Renaissance Technologies LLC | Jim Simons | 0.06% | 814,100 | $40,216,540 | $37,245,075 | -$2,971,465 | -7.39% |
| Raymond James Financial Inc | 0.01% | 788,074 | $38,068,324 | $36,054,386 | -$2,013,939 | -5.29% | |
| Goodnow Investment Group, Llc | 4.08% | 753,979 | $37,246,563 | $34,494,539 | -$2,752,024 | -7.39% | |
| Federated Hermes, Inc. | 0.06% | 746,248 | $36,864,651 | $34,140,846 | -$2,723,805 | -7.39% | |
| Balyasny Asset Management L.P. | 0.07% | 738,689 | $36,491,237 | $33,795,022 | -$2,696,215 | -7.39% | |
| Aqr Capital Management Llc | 0.02% | 730,775 | $35,420,664 | $33,432,956 | -$1,987,708 | -5.61% | |
| Engineers Gate Manager Lp | 0.44% | 710,791 | $35,113,076 | $32,518,688 | -$2,594,388 | -7.39% | |
| Robeco Schweiz Ag | 0.55% | 711,784 | $34,343,578 | $32,564,118 | -$1,779,460 | -5.18% |
Frequently asked questions about CNM
Who owns the most CNM stock?
The largest holders of CNM are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for CORE & MAIN INC-CLASS A (CNM).
Is CNM widely held by superinvestors?
Many widely followed stocks like CNM appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly CNM is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.