ACK Asset Management LLC: CORE & MAIN INC (CNM): Quarterly 13F Position History
As of Q2 2026, ACK Asset Management LLC reported 1,090,000 shares of CORE & MAIN INC (CNM), worth $52.6M and representing 6.1% of its 13F equity book. Quarter-over-quarter share count change: + 190,000 (+21.1%) . The position first appeared in Q1 2023 and has been disclosed across 14 13F-HR filings in Pactolio's tracked window.
- 1,090,000Shares Held (Latest Filing)
- $52.6MReported Market Value (Latest Filing)
- 6.1%Portfolio Weight (% of 13F Equity Book)
- +190,000Quarter-over-Quarter Share Change
- +$8.1MQuarter-over-Quarter Value Change
- 1,352,000Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 14 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q2 2026 | 1,090,000 | +190,000 | +21.1% | $52.6M | 6.1% | $48.3 |
| Q1 2026 | 900,000 | 0 | – | $44.5M | 5.5% | $49.4 |
| Q4 2025 | 900,000 | 0 | – | $46.8M | 5.9% | $52.0 |
| Q3 2025 | 900,000 | +900,000 | – | $48.4M | 6.1% | $53.8 |
| Q2 2025 | 0 | 0 | – | $0 | 0.0% | – |
| Q1 2025 | 0 | 0 | – | $0 | 0.0% | – |
| Q4 2024 | 0 | 0 | – | $0 | 0.0% | – |
| Q3 2024 | 0 | 1,352,000 | -100.0% | $0 | 0.0% | – |
| Q2 2024 | 1,352,000 | 0 | – | $66.2M | 8.2% | $48.9 |
| Q1 2024 | 1,352,000 | 0 | – | $77.4M | 9.0% | $57.3 |
| Q4 2023 | 1,352,000 | +47,000 | +3.6% | $54.6M | 6.6% | $40.4 |
| Q3 2023 | 1,305,000 | +1,005,000 | +335.0% | $37.6M | 5.5% | $28.8 |
| Q2 2023 | 300,000 | 525,000 | -63.6% | $55.4M | 6.9% | $184.8 |
| Q1 2023 | 825,000 | – | – | $19.1M | 2.9% | $23.1 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares, a quarter-end mark rather than the manager's cost basis. See the full methodology document for the normalization rules.
When did ACK Asset Management LLC first disclose a CNM position in 13F-HR filings?
ACK Asset Management LLC first reported CORE & MAIN INC (CNM) on its 13F-HR filing for the period ending 2023-03-31 (Q1 2023). The position has appeared on 14 reported quarters within Pactolio's tracked window.
What was ACK Asset Management LLC's most recent quarter-over-quarter share-count change in CNM?
Between Q1 2026 and Q2 2026, ACK Asset Management LLC added 190,000 shares of CNM (+21.1%), bringing the total reported position to 1,090,000 shares at a market value of $52.6M.
Does the implied price-per-share represent ACK Asset Management LLC's cost basis in CNM?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.