Core & Main, Inc.
US ˙ NYSE ˙ US21874C1027

SecurityCNM / Core & Main, Inc.
InstitutionKBC Group NV
Latest Disclosed Ownership2,737,992 shares
Latest Disclosed Value $ 135,257
KBC Group NV reports 4.55% increase in ownership of CNM / Core & Main, Inc.

On May 7, 2026 - KBC Group NV filed a 13F-HR form disclosing ownership of 2,737,992 shares of Core & Main, Inc. (US:CNM) valued at $135,256,805 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 2,618,916 shares of Core & Main, Inc.. This represents a change in shares of 4.55% during the quarter. The current value of the position is $142,704,143 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)
2026-05-07 2026-03-31 13F CORE & MAIN CL A 21874C102 2,737,992 119,076 4.55 135 -0.74 0.1745
2026-01-26 2025-12-31 13F CORE & MAIN CL A 21874C102 2,618,916 272,258 11.60 136 7.94 0.3104
2026-01-20 2025-09-30 13F CORE & MAIN CL A 21874C102 2,346,658 324,451 16.04 126 3.28 0.3029
2025-08-08 2025-06-30 13F CORE & MAIN CL A 21874C102 2,022,207 296,397 17.17 122 46.99 0.3296
2025-04-25 2025-03-31 13F CORE & MAIN CL A 21874C102 1,725,810 86,672 5.29 83 0.00 0.2588
2025-01-22 2024-12-31 13F CORE & MAIN CL A 21874C102 1,639,138 280,183 20.62 83 38.33 0.2299
2024-11-06 2024-09-30 13F CORE & MAIN CL A 21874C102 1,358,955 98,992 7.86 60 -1.64 0.1823
2024-07-17 2024-06-30 13F CORE & MAIN CL A 21874C102 1,259,963 163,518 14.91 62 -1.61 0.1863
2024-05-08 2024-03-31 13F CORE & MAIN CL A 21874C102 1,096,445 270,138 32.69 63 87.88 0.1994
2024-02-13 2023-12-31 13F CORE & MAIN CL A 21874C102 826,307 169,268 25.76 33 83.33 0.1184
2024-02-15 2023-09-30 13F/A-1 CORE & MAIN CL A 21874C102 657,039 657,039 19 0.0774
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.