CNM · Core & Main, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding CNM
All superinvestors →Holder Concentration
Across 456 13F filersWho Holds CNM
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 454 filers, like-for-like change +1.3%; actively managed books +1.3%; index-like books +1.4%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 35.4% | 223 | -1.4% |
| Exempt adviser | 1.8% | 9 | -10.6% |
| Adviser | 7.3% | 12 | -7.1% |
| Bank | 6.2% | 23 | -5.4% |
| Insurer | 0.3% | 2 | +5.8% |
| Broker-dealer | 0.0% | 1 | -26.5% |
| Registered fund | 0.8% | 1 | +6.6% |
| Benefit plan | 0.3% | 7 | +2.0% |
| Non-US | 6.5% | 15 | +20.7% |
| Holding company | 22.5% | 10 | +20.6% |
| Unknown | 18.9% | 151 | -9.5% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 28.9% | 46 | +1.4% |
| Systematic-like | 5.8% | 28 | -2.3% |
| Concentrated | 7.5% | 75 | +6.7% |
| Diversified active | 57.8% | 305 | +0.9% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 48.6% | 250 | +6.5% |
| Medium turnover | 28.2% | 103 | -5.0% |
| High turnover | 10.8% | 71 | -4.1% |
| Unknown | 12.3% | 30 | +2.1% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 12.7% | 55 | +13.5% |
| Medium horizon | 16.8% | 78 | -14.1% |
| Long horizon | 65.4% | 291 | +6.7% |
| Unknown | 5.0% | 30 | -23.3% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 4.6% | 92 | +15.5% |
| $1B to $10B | 11.7% | 148 | -8.7% |
| $10B to $100B | 18.3% | 133 | -8.7% |
| $100B or more | 65.3% | 81 | +5.7% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 1.4% | 96 | -18.8% |
| Pooled investment vehicles | 12.6% | 52 | -3.3% |
| Registered funds and BDCs | 17.8% | 29 | +1.7% |
| Pension and profit sharing plans | 0.1% | 4 | -10.7% |
| Insurance companies | 0.2% | 6 | -2.6% |
| Charitable organizations | 0.0% | 1 | +100.0% |
| Governments and sovereign funds | 0.9% | 6 | -15.9% |
| Corporations | 0.0% | 1 | +460.3% |
| Other investment advisers | 0.1% | 8 | -5.9% |
| Other | 0.2% | 2 | -26.5% |
| Diversified | 2.1% | 17 | +11.4% |
| Unknown | 64.7% | 232 | +2.8% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 17.0% | 77 | -1.6% |
| Private equity funds | 0.4% | 12 | -11.5% |
| Venture capital funds | 0.0% | 1 | +2.6% |
| Real estate funds | 0.0% | 4 | -24.1% |
| Liquidity funds | 0.0% | 1 | -6.9% |
| Securitized asset funds | 0.3% | 2 | -2.7% |
| Other private funds | 3.8% | 17 | -5.4% |
| Mixed private funds | 1.3% | 2 | +4.0% |
| Private funds, type not stated | 1.4% | 7 | -5.2% |
| No private funds | 13.0% | 109 | -0.9% |
| Unknown | 62.8% | 222 | +3.3% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 75.8% | 352 | +0.7% |
| Outside the US | 24.2% | 102 | +3.1% |
| Unknown | 0.0% | 0 | -100.0% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 6 holders with no observed 2026-03-31 13F and 5 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
454 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 87.4% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies CNM's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | WMS Advanced Drainage Systems, Inc. | 12 |
| 2 | MWA Mueller Water Products, Inc. | 6 |
| 3 | SITE SiteOne Landscape Supply, Inc. | 6 |
| 4 | MIDD MIDDLEBY Corp | 5 |
| 5 | TTEK Tetra Tech Inc | 7 |
| 6 | HAYW Hayward Holdings, Inc. | 4 |
| 7 | VLTO Veralto Corp | 10 |
| 8 | LFUS Littelfuse Inc | 8 |
| 9 | CXT Crane NXT, Co. | 4 |
| 10 | ZWS Zurn Elkay Water Solutions Corp | 4 |
Shareholder Targets
13F filers that own its peers but not CNM, quarter ended Jun 30, 2026Found through its holder-overlap peers: WMS, MWA, SITE, MIDD, TTEK, HAYW, VLTO, LFUS, CXT, ZWS, CDW, PNR, FELE, LMB, CHEF, ADSK, MSA, LPX, DSGX, BRKR. 1,847 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $1,837,030,653 10 held | VLTO, SITE, DSGX |
| 2 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser, Diversified active | $1,093,613,586 11 held | ADSK, TTEK, DSGX |
| 3 | Orbis Allan Gray Ltd Unknown, Diversified active | $1,079,633,772 1 held | BRKR |
| 4 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Registered adviser, Diversified active | $1,002,568,927 12 held | ADSK, PNR, CDW |
| 5 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC Registered adviser, Diversified active | $968,269,509 10 held | ZWS, SITE, WMS |
| 6 | Boston Partners Registered adviser, Diversified active | $921,545,344 7 held | CDW, MIDD, LFUS |
| 7 | Ninety One UK Ltd Registered adviser, Diversified active | $859,232,105 4 held | ADSK, TTEK, DSGX |
| 8 | HARRIS ASSOCIATES L P Registered adviser, Index-like | $779,630,948 1 held | CDW |
| 9 | Allspring Global Investments Holdings, LLC Holding company, Diversified active | $708,813,219 14 held | CDW, FELE, MSA |
| 10 | Aristotle Capital Management, LLC Registered adviser, Diversified active | $694,192,068 2 held | ADSK, FELE |
Fund Ownership of CNM by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 23.40% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 3.08% | 5,858,838 |
| Index ETFs | 20.32% | 38,708,449 |
| Active ETFs | 2.03% | 3,859,041 |
| Active funds | 13.94% | 26,559,721 |
| Unclassified | 0.83% | 1,581,869 |
| All registered funds | 40.19% | 76,567,918 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $885,758,440 | 9.16% | 18,357,688 | Shares | 2026-08-07 | |
| Mega Capital World Investors Adviser | $553,574,807 | 5.73% | 11,473,053 | Shares | 2026-08-12 | |
| Mega FMR LLC Holding company | $432,278,165 | 4.47% | 8,959,133 | Shares | 2026-08-13 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $410,974,103 | 4.25% | 8,517,598 | Shares | 2026-08-13 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $398,145,538 | 4.12% | 8,251,721 | Shares | 2026-08-13 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $301,507,253 | 3.12% | 6,248,855 | Shares | 2026-08-11 | |
| Mega MORGAN STANLEY Holding company | $291,441,621 | 3.02% | 6,040,241 | Shares | 2026-08-13 | |
| Mega STATE STREET CORP Bank | $285,063,557 | 2.95% | 5,908,053 | Shares | 2026-09-22 | |
| Large Select Equity Group, L.P. Registered adviser | $281,792,496 | 2.92% | 5,840,259 | Shares | 2026-08-14 | |
| Large ROYAL LONDON ASSET MANAGEMENT LTD Non-US | $264,828,472 | 2.74% | 5,488,673 | Shares | 2026-08-13 | |
| Mega Pictet Asset Management Holding SA | $239,460,407 | 2.48% | 4,962,910 | Shares | 2026-07-30 | |
| Mega D. E. Shaw & Co., Inc. | $220,905,290 | 2.29% | 4,578,348 | Shares | 2026-08-14 | |
| Large Impax Asset Management Group plc Holding company | $202,824,568 | 2.10% | 4,203,618 | Shares | 2026-08-11 | |
| Mega Amundi Holding company | $185,594,927 | 1.92% | 3,846,527 | Shares | 2026-08-11 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $172,587,306 | 1.79% | 3,576,939 | Shares | 2026-08-12 | |
| Mega Jupiter Topco LLC | $164,503,983 | 1.70% | 3,409,409 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. Registered adviser | $148,564,789 | 1.54% | 3,079,063 | Shares | 2026-08-14 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $135,356,108 | 1.40% | 2,805,308 | Shares | 2026-08-11 | |
| Small Camrose Capital Investment Partners LLP Exempt adviser | $120,828,180 | 1.25% | 2,504,211 | Shares | 2026-08-14 | |
| Mega NORDEA INVESTMENT MANAGEMENT AB Non-US | $120,077,747 | 1.24% | 2,488,658 | Shares | 2026-08-05 | |
| Mega NORGES BANK Non-US | $115,782,871 | 1.20% | 2,399,645 | Shares | 2026-08-12 | |
| Mid Findlay Park Partners LLP | $115,599,955 | 1.20% | 2,395,854 | Shares | 2026-08-12 | |
| Mega NEUBERGER BERMAN GROUP LLC Holding company | $113,982,856 | 1.18% | 2,362,339 | Shares | 2026-08-13 | |
| Large KBC Group NV | $113,864,508 | 1.18% | 2,745,046 | Shares | 2026-10-22 | |
| Mid FIDUCIARY MANAGEMENT INC /WI/ Registered adviser | $111,389,419 | 1.15% | 2,308,589 | Shares | 2026-08-13 | |
| Large BESSEMER GROUP INC | $107,328,019 | 1.11% | 2,224,415 | Shares | 2026-08-12 | |
| Mid SPRUCE HOUSE INVESTMENT MANAGEMENT LLC Registered adviser | $103,737,500 | 1.07% | 2,150,000 | Shares | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $99,785,245 | 1.03% | 2,068,088 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. Adviser | $96,898,349 | 1.00% | 2,008,256 | Shares | 2026-08-14 | |
| Mid Forest Avenue Capital Management LP Registered adviser | $86,538,353 | 0.90% | 1,793,541 | Shares | 2026-08-14 | |
| Mid Liontrust Investment Partners LLP Registered fund | $81,428,388 | 0.84% | 1,687,635 | Shares | 2026-08-18 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $79,030,363 | 0.82% | 1,637,935 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $71,767,434 | 0.74% | 1,487,408 | Shares | 2026-08-13 | |
| Mega JPMORGAN CHASE & CO Bank | $68,813,230 | 0.71% | 1,426,181 | Shares | 2026-08-12 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $67,960,125 | 0.70% | 1,408,500 | Shares | 2026-08-13 | |
| Mid FERNBRIDGE CAPITAL MANAGEMENT LP | $64,899,193 | 0.67% | 1,345,061 | Shares | 2026-08-13 | |
| Mega UBS Group AG Bank | $62,394,052 | 0.65% | 1,293,141 | Shares | 2026-08-13 | |
| Mid SAMLYN CAPITAL, LLC Registered adviser | $61,888,730 | 0.64% | 1,282,668 | Shares | 2026-08-14 | |
| Large Handelsbanken Fonder AB Non-US | $59,525,639 | 0.62% | 1,233,692 | Shares | 2026-07-10 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $57,484,471 | 0.59% | 1,191,388 | Shares | 2026-08-13 | |
| Small ACK Asset Management LLC | $52,592,500 | 0.54% | 1,090,000 | Shares | 2026-08-13 | |
| Mega JANE STREET GROUP, LLC | $50,355,581 | 0.52% | 1,043,639 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $49,658,269 | 0.51% | 1,029,187 | Shares | 2026-08-06 | |
| Mid Hill City Capital, LP Registered adviser | $49,632,362 | 0.51% | 1,028,650 | Shares | 2026-08-17 | |
| Small CDAM (UK) Ltd Registered adviser | $49,107,499 | 0.51% | 1,017,772 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $47,560,796 | 0.49% | 985,716 | Shares | 2026-09-02 | |
| Mid Zimmer Partners, LP Registered adviser | $45,034,475 | 0.47% | 933,357 | Shares | 2026-08-14 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $43,558,989 | 0.45% | 902,777 | Shares | 2026-08-14 | |
| Large JACOBS LEVY EQUITY MANAGEMENT, INC Registered adviser | $41,599,027 | 0.43% | 862,156 | Shares | 2026-08-14 | |
| Small Bornite Capital Management LP Registered adviser | $36,621,750 | 0.38% | 759,000 | Shares | 2026-08-13 | |
| Mid Robeco Schweiz AG | $34,343,578 | 0.36% | 711,784 | Shares | 2026-07-28 | |
| Mega Legal & General Group Plc | $32,693,716 | 0.34% | 677,590 | Shares | 2026-08-14 | |
| Mid PGGM Investments | $32,557,507 | 0.34% | 674,767 | Shares | 2026-08-12 | |
| Mega Allianz Asset Management GmbH | $32,277,512 | 0.33% | 668,964 | Shares | 2026-09-02 | |
| Mega Nuveen, LLC | $32,072,158 | 0.33% | 664,708 | Shares | 2026-08-11 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $30,164,741 | 0.31% | 625,176 | Shares | 2026-08-14 | |
| Small Sunriver Management LLC | $29,915,820 | 0.31% | 620,017 | Shares | 2026-08-13 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $29,615,850 | 0.31% | 613,800 | Shares | 2026-08-14 | |
| Mega SCHRODER INVESTMENT MANAGEMENT GROUP Registered adviser | $28,989,563 | 0.30% | 600,820 | Shares | 2026-08-13 | |
| Large SILVERCREST ASSET MANAGEMENT GROUP LLC Registered adviser | $28,302,292 | 0.29% | 586,576 | Shares | 2026-08-14 | |
| Small GOODNOW INVESTMENT GROUP, LLC Registered adviser | $28,120,727 | 0.29% | 582,813 | Shares | 2026-08-14 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $27,538,156 | 0.28% | 570,739 | Shares | 2026-08-04 | |
| Large Daiwa Securities Group Inc. | $26,777,881 | 0.28% | 554,982 | Shares | 2026-07-31 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $26,724,031 | 0.28% | 553,866 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $26,636,410 | 0.28% | 552,050 | Shares | 2026-08-13 | |
| Large MACKENZIE FINANCIAL CORP Registered adviser | $26,282,498 | 0.27% | 544,715 | Shares | 2026-08-13 | |
| Small CANYON CAPITAL ADVISORS LLC Registered adviser | $24,607,500 | 0.25% | 510,000 | Shares | 2026-08-14 | |
| Mid Thomasville National Bank | $24,112,020 | 0.25% | 499,731 | Shares | 2026-07-20 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $23,828,358 | 0.25% | 493,852 | Shares | 2026-08-14 | |
| Mega Swedbank AB | $23,497,750 | 0.24% | 487,000 | Shares | 2026-07-15 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $23,242,362 | 0.24% | 481,707 | Shares | 2026-08-12 | |
| Mid DF DENT & CO INC Registered adviser | $23,134,717 | 0.24% | 479,476 | Shares | 2026-08-14 | |
| Small Trigran Investments, Inc. Registered adviser | $22,809,993 | 0.24% | 472,746 | Shares | 2026-08-12 | |
| Large DUFF & PHELPS INVESTMENT MANAGEMENT CO Registered adviser | $21,956,161 | 0.23% | 455,050 | Shares | 2026-08-13 | |
| Mid Lighthouse Investment Partners, LLC Registered adviser | $21,398,198 | 0.22% | 443,486 | Shares | 2026-08-14 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $20,221,572 | 0.21% | 419,100 | Shares | 2026-08-14 | |
| Mega California Public Employees Retirement System | $19,804,984 | 0.20% | 410,466 | Shares | 2026-08-14 | |
| Mid Local Pensions Partnership Investment Ltd | $19,444,750 | 0.20% | 403,000 | Shares | 2026-07-30 | |
| Small Pembroke Management, LTD Registered adviser | $19,290,066 | 0.20% | 465,045 | Shares | 2026-10-21 | |
| Mid MIROVA | $19,262,992 | 0.20% | 399,233 | Shares | 2026-08-13 | |
| Large Freestone Grove Partners LP Registered adviser | $18,902,709 | 0.20% | 391,766 | Shares | 2026-08-14 | |
| Mega Swiss National Bank | $18,209,550 | 0.19% | 377,400 | Shares | 2026-08-11 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $18,113,050 | 0.19% | 375,400 | Put | 2026-09-02 | |
| Large Polar Capital Holdings Plc Registered adviser | $18,031,507 | 0.19% | 373,710 | Shares | 2026-08-14 | |
| Mega FIL Ltd Non-US | $17,657,232 | 0.18% | 365,953 | Shares | 2026-08-13 | |
| Mid SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $16,417,545 | 0.17% | 340,260 | Shares | 2026-08-14 | |
| Mega MARSHALL WACE, LLP Exempt adviser | $16,034,487 | 0.17% | 332,321 | Shares | 2026-08-13 | |
| Large CI INVESTMENTS INC. Non-US | $15,491,386 | 0.16% | 321,065 | Shares | 2026-08-13 | |
| Large Thrivent Financial for Lutherans Registered adviser | $15,022,878 | 0.16% | 311,355 | Shares | 2026-08-14 | |
| Mega VAN ECK ASSOCIATES CORP Registered adviser | $13,133,310 | 0.14% | 272,193 | Shares | 2026-08-14 | |
| Mid HITE Hedge Asset Management LLC Registered adviser | $13,055,919 | 0.14% | 270,589 | Shares | 2026-08-14 | |
| Large Gotham Asset Management, LLC Registered adviser | $13,003,423 | 0.13% | 269,501 | Shares | 2026-08-14 | |
| Large DNB Asset Management AS Adviser | $12,785,429 | 0.13% | 264,983 | Shares | 2026-08-11 | |
| Small Medina Value Partners, LLC Registered adviser | $12,219,746 | 0.13% | 253,259 | Shares | 2026-08-14 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $12,145,683 | 0.13% | 251,724 | Shares | 2026-08-14 | |
| Mega RAYMOND JAMES FINANCIAL INC | $12,036,782 | 0.12% | 249,467 | Shares | 2026-08-14 | |
| Large Zurcher Kantonalbank (Zurich Cantonalbank) Non-US | $11,887,690 | 0.12% | 246,377 | Shares | 2026-08-12 | |
| Mid SOROS FUND MANAGEMENT LLC | $11,407,795 | 0.12% | 236,431 | Shares | 2026-08-14 | |
| Mid WEDGE CAPITAL MANAGEMENT L L P/NC | $11,376,595 | 0.12% | 274,267 | Shares | 2026-10-13 | |
| Mid Engineers Gate Manager LP | $11,142,131 | 0.12% | 230,925 | Shares | 2026-08-14 |
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