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 $9.28B 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 $885.76M in its June 30, 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 $844.09M, representing an estimated loss of -4.70% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 44% of the total disclosed CNM value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Capital World Investors, Fmr 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
436
Total Reported Value
$9.28B
Largest Holder
Blackrock, Inc.
Largest Position
$885.76M
Insider Transactions (90d)
13
Latest Filing Quarter
Q2 2026
New Institutional Positions
41
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 18,357,688 | $885,758,446 | $844,086,494 | -$41,671,952 | -4.70% | |
| Capital World Investors | 0.07% | 11,473,053 | $553,574,807 | $527,530,977 | -$26,043,830 | -4.70% | |
| Fmr Llc | 0.02% | 8,959,133 | $432,278,184 | $411,940,935 | -$20,337,249 | -4.70% | |
| Vanguard Capital Management Llc | 0.01% | 8,517,598 | $410,974,104 | $391,639,156 | -$19,334,948 | -4.70% | |
| Vanguard Portfolio Management Llc | 0.02% | 8,251,721 | $398,145,538 | $379,414,132 | -$18,731,406 | -4.70% | |
| First Trust Advisors Lp | 0.18% | 6,248,855 | $301,507,084 | $287,322,353 | -$14,184,731 | -4.70% | |
| Morgan Stanley | 0.02% | 6,040,241 | $291,441,738 | $277,730,281 | -$13,711,457 | -4.70% | |
| State Street Corp | 0.01% | 5,908,053 | $285,063,557 | $271,652,277 | -$13,411,280 | -4.70% | |
| Select Equity Group, L.P. | 1.49% | 5,840,259 | $281,792,497 | $268,535,109 | -$13,257,388 | -4.70% | |
| Royal London Asset Management Ltd | 0.49% | 5,488,673 | $264,828,473 | $252,369,185 | -$12,459,288 | -4.70% | |
| Pictet Asset Management Holding Sa | 0.23% | 4,962,910 | $239,455,636 | $228,194,602 | -$11,261,034 | -4.70% | |
| D. E. Shaw & Co., Inc. | 0.14% | 4,578,348 | $220,905,292 | $210,512,441 | -$10,392,851 | -4.70% | |
| Impax Asset Management Group Plc | 1.32% | 4,203,618 | $202,824,569 | $193,282,356 | -$9,542,213 | -4.70% | |
| Amundi | 0.04% | 3,846,527 | $185,582,767 | $176,863,311 | -$8,719,456 | -4.70% | |
| Geode Capital Management, Llc | 0.01% | 3,576,939 | $172,630,298 | $164,467,655 | -$8,162,643 | -4.73% | |
| Janus Henderson Group Plc | 0.08% | 3,377,281 | $166,867,185 | $155,287,380 | -$11,579,805 | -6.94% | |
| Point72 Asset Management, L.P. | 0.23% | 3,079,063 | $148,564,790 | $141,575,317 | -$6,989,473 | -4.70% | |
| Dimensional Fund Advisors Lp | 0.02% | 2,805,308 | $135,351,304 | $128,988,062 | -$6,363,242 | -4.70% | |
| Camrose Capital Investment Partners Llp | 13.65% | 2,504,211 | $120,828,181 | $115,143,622 | -$5,684,559 | -4.70% | |
| Nordea Investment Management Ab | 0.10% | 2,488,658 | $118,684,100 | $114,428,495 | -$4,255,605 | -3.59% | |
| Norges Bank | 0.01% | 2,399,645 | $115,782,871 | $110,335,677 | -$5,447,194 | -4.70% | |
| Findlay Park Partners Llp | 1.56% | 2,395,854 | $115,599,956 | $110,161,367 | -$5,438,589 | -4.70% | |
| Neuberger Berman Group Llc | 0.08% | 2,362,339 | $113,982,857 | $108,620,347 | -$5,362,510 | -4.70% | |
| Fiduciary Management Inc | 1.58% | 2,308,589 | $111,389,419 | $106,148,922 | -$5,240,497 | -4.70% | |
| Spruce House Investment Management Llc | 3.05% | 2,150,000 | $103,737,500 | $98,857,000 | -$4,880,500 | -4.70% | |
| Charles Schwab Investment Management Inc | 0.01% | 2,068,088 | $99,785,247 | $95,090,686 | -$4,694,561 | -4.70% | |
| Sixth Street Partners Management Company, L.P. | 0.01% | 2,068,088 | $99,785,247 | $95,090,686 | -$4,694,561 | -4.70% | |
| Invesco Ltd. | 0.01% | 2,008,256 | $96,898,353 | $92,339,611 | -$4,558,742 | -4.70% | |
| Liontrust Investment Partners Llp | 1.33% | 1,730,797 | $89,949,520 | $79,582,046 | -$10,367,474 | -11.53% | |
| Forest Avenue Capital Management Lp | 3.63% | 1,793,541 | $86,538,353 | $82,467,015 | -$4,071,338 | -4.70% | |
| Alliancebernstein L.P. | 0.03% | 1,637,935 | $80,913,989 | $75,312,251 | -$5,601,738 | -6.92% | |
| Northern Trust Corp | 0.01% | 1,487,408 | $71,767,437 | $68,391,020 | -$3,376,417 | -4.70% | |
| Jpmorgan Chase & Co | 0.00% | 1,426,181 | $68,825,472 | $65,575,802 | -$3,249,670 | -4.72% | |
| Renaissance Technologies LLC | Jim Simons | 0.09% | 1,408,500 | $67,960,125 | $64,762,830 | -$3,197,295 | -4.70% |
| Fernbridge Capital Management Lp | 4.75% | 1,345,061 | $64,899,193 | $61,845,905 | -$3,053,288 | -4.70% | |
| Ubs Group Ag | 0.01% | 1,293,141 | $62,394,054 | $59,458,623 | -$2,935,431 | -4.70% | |
| Samlyn Capital, Llc | 1.03% | 1,282,668 | $61,888,731 | $58,977,075 | -$2,911,656 | -4.70% | |
| Vanguard Fiduciary Trust Co | 0.01% | 1,191,388 | $57,484,471 | $54,780,020 | -$2,704,451 | -4.70% | |
| Ack Asset Management Llc | 6.14% | 1,090,000 | $52,592,500 | $50,118,200 | -$2,474,300 | -4.70% | |
| Jane Street Group, Llc | 0.03% | 1,043,639 | $50,355,582 | $47,986,521 | -$2,369,061 | -4.70% | |
| Bank Of New York Mellon Corp | 0.01% | 1,029,187 | $49,658,260 | $47,322,018 | -$2,336,242 | -4.70% | |
| Hill City Capital, Lp | 1.27% | 1,028,650 | $49,632,363 | $47,297,327 | -$2,335,036 | -4.70% | |
| Cdam (Uk) Ltd | 12.68% | 1,017,772 | $49,107,499 | $46,797,157 | -$2,310,342 | -4.70% | |
| Citadel Advisors Llc | 0.03% | 985,716 | $47,560,798 | $45,323,222 | -$2,237,576 | -4.70% | |
| Zimmer Partners, Lp | 1.06% | 933,357 | $45,034,475 | $42,915,755 | -$2,118,720 | -4.70% | |
| Goldman Sachs Group Inc | 0.00% | 902,777 | $43,558,978 | $41,509,686 | -$2,049,292 | -4.70% | |
| Jacobs Levy Equity Management, Inc | 0.15% | 862,156 | $41,599,027 | $39,641,933 | -$1,957,094 | -4.70% | |
| Allianz Asset Management Gmbh | 0.04% | 829,464 | $40,973,700 | $38,138,755 | -$2,834,945 | -6.92% | |
| Bornite Capital Management Lp | 4.61% | 759,000 | $36,621,750 | $34,898,820 | -$1,722,930 | -4.70% | |
| Robeco Schweiz Ag | 0.55% | 711,784 | $34,343,578 | $32,727,828 | -$1,615,750 | -4.70% |
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.