Core & Main, Inc.
Core & Main, Inc. (CNM) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · CNM · as of Sep 30, 2025
Ownership Breakdown
453
Institutional Holders
▼ 7 vs Q2
$11.32B
Total Inst. Value
▼ $1.14B vs Q2
188.14M
Shares Outstanding
freeFloat 99.76%
210.42M
13F Shares Held
▲ 3.65M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
CNM largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. wholesale-durable goods, nec | 19.03M | 9.96% | 9.96% | $1.02T | Nov 12, 2025 | ▼ 24.9K |
VANGUARD GROUP INC wholesale-durable goods, nec | 17.70M | 9.26% | 9.26% | $953.05B | Nov 7, 2025 | ▼ 121.4K |
MORGAN STANLEY wholesale-durable goods, nec | 13.47M | 7.05% | 7.05% | $725.02B | May 27, 2026 | ▼ 2.37M |
SELECT EQUITY GROUP, L.P. wholesale-durable goods, nec | 9.69M | 5.07% | 5.07% | $521.69B | Nov 14, 2025 | ▼ 1.77M |
PICTET ASSET MANAGEMENT HOLDING SA wholesale-durable goods, nec | 8.33M | 4.36% | 4.36% | $448.33B | Nov 18, 2025 | ▲ 603.3K |
FMR LLC wholesale-durable goods, nec | 6.22M | 3.25% | 3.25% | $334.87B | Nov 13, 2025 | ▲ 269.9K |
CAPITAL WORLD INVESTORS wholesale-durable goods, nec | 5.95M | 3.11% | 3.11% | $320.19B | Nov 13, 2025 | ▲ 4.44M |
STATE STREET CORP wholesale-durable goods, nec | 5.68M | 2.97% | 2.97% | $305.70B | Nov 14, 2025 | ▼ 69.9K |
D1 CAPITAL PARTNERS L.P. wholesale-durable goods, nec | 5.18M | 2.71% | 2.71% | $278.66B | Nov 14, 2025 | ▼ 836.0K |
JANUS HENDERSON GROUP PLC wholesale-durable goods, nec | 5.16M | 2.70% | 2.70% | $277.66B | Nov 14, 2025 | ▲ 317.5K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
25
Increased
+12.62M shares4
New Positions
first time holders21
Decreased
−10.21M shares0
Sold Out
fully exitedNet shares change (top 50)
+2.41M
+12.62M / −10.21M
Net new holders
+8
4 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
CNM insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
1
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Bradbury Robyn L Chief Financial Officer | Apr 17, 2026 | J-Other | 5,000 | — | — | 152.4K | Form 4 ↗ |
Bradbury Robyn L Chief Financial Officer | Apr 17, 2026 | C-Conversion | 5,000 | — | — | 17.5K | Form 4 ↗ |
Bradbury Robyn L Chief Financial Officer | Apr 17, 2026 | Sale | 1,647 | $51.94 | $85.5K | 15.9K | Form 4 ↗ |
Bradbury Robyn L Chief Financial Officer | Apr 17, 2026 | Sale | 3,353 | $52.84 | $177.2K | 12.5K | Form 4 ↗ |
Bradbury Robyn L Chief Financial Officer | Apr 17, 2026 | J-Other | 5,000 | — | — | 5.0K | Form 4 ↗ |
Bradbury Robyn L Chief Financial Officer | Apr 17, 2026 | C-Conversion | 5,000 | — | — | 0 | Form 4 ↗ |
Hope James D director | Apr 7, 2026 | Purchase | 1,972 | $50.70 | $100.0K | 6.9K | Form 4 ↗ |
Hardwick M Susan director | Apr 1, 2026 | Award | 580 | — | — | 580 | Form 4 ↗ |
Giles Jeffrey D EVP, Corporate Development | Mar 12, 2026 | Award | 21,585 | $47.63 | $1.03M | 21.6K | Form 4 ↗ |
Giles Jeffrey D EVP, Corporate Development | Mar 12, 2026 | Award | 3,021 | — | — | 9.7K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Core & Main, Inc. (CNM) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 0.24%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Core & Main, Inc. is BLACKROCK, INC., holding approximately 19.03 million shares — equal to 9.96% of outstanding shares — as of September 30, 2025.
A total of 453 institutional investors currently hold CNM stock, with a combined institutional value of approximately $11.32 billion as of the most recent 13F filing period.
Frequently asked questions
CNM ownershipCore & Main, Inc. (CNM) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is BLACKROCK, INC. with a 9.96% stake. Company insiders hold 0.24%. Data sourced from SEC Form 13F as of September 30, 2025.