Core & Main, Inc.
US ˙ NYSE ˙ US21874C1027

SecurityCNM / Core & Main, Inc.
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership521,936 shares
Latest Disclosed Value $ 25,783,639
Neuberger Berman Group LLC reports 340.52% increase in ownership of CNM / Core & Main, Inc.

On May 14, 2026 - Neuberger Berman Group LLC filed a 13F-HR form disclosing ownership of 521,936 shares of Core & Main, Inc. (US:CNM) valued at $25,783,638 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 118,483 shares of Core & Main, Inc.. This represents a change in shares of 340.52% during the quarter. The current value of the position is $27,203,304 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F CORE & MAIN INC A Common 21874C102 521,936 403,453 340.52 25,784 318.76 0.0100
2026-02-13 2025-12-31 13F CORE & MAIN INC A Common 21874C102 118,483 -9,477 -7.41 6,158 -10.61 0.0046
2025-11-12 2025-09-30 13F CORE & MAIN INC A Common 21874C102 127,960 -30,148 -19.07 6,888 -27.81 0.0050
2025-08-25 2025-06-30 13F/A-1 CORE & MAIN INC A Common 21874C102 158,108 21,089 15.39 9,542 44.15 0.0073
2025-08-13 2025-06-30 13F CORE & MAIN INC A Common 21874C102 158,108 21,089 9,542 0.0038
2025-05-13 2025-03-31 13F CORE & MAIN INC A Common 21874C102 137,019 -4,902 -3.45 6,619 -8.39 0.0055
2025-02-13 2024-12-31 13F CORE & MAIN INC A Common 21874C102 141,921 31,627 28.68 7,225 47.54 0.0057
2024-11-14 2024-09-30 13F CORE & MAIN INC A Common 21874C102 110,294 -3,958 -3.46 4,897 -12.41 0.0038
2024-11-14 2024-06-30 13F/A-1 CORE & MAIN INC A Common 21874C102 114,252 114,252 5,591 0.0046
2024-08-13 2024-06-30 13F CORE & MAIN INC A Common 21874C102 114,252 114,252 5,591 0.0046
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.