Coliseum Capital Management, LLC: ATKORE INC (ATKR): Quarterly 13F Position History
As of Q1 2026, Coliseum Capital Management, LLC reported 947,070 shares of ATKORE INC (ATKR), worth $55.8M and representing 4.6% of its 13F equity book. Quarter-over-quarter share count change: + 137,765 (+17.0%) . The position first appeared in Q4 2025 and has been disclosed across 2 13F-HR filings in Pactolio's tracked window.
- 947,070Shares Held (Latest Filing)
- $55.8MReported Market Value (Latest Filing)
- 4.6%Portfolio Weight (% of 13F Equity Book)
- +137,765Quarter-over-Quarter Share Change
- +$4.6MQuarter-over-Quarter Value Change
- 947,070Peak Reported Shares (Historical)
Recent initiation: Coliseum Capital Management, LLC first reported ATKR on the Q4 2025 filing — fewer than three quarters of history are available.
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 2 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 947,070 | +137,765 | +17.0% | $55.8M | 4.6% | $58.9 |
| Q4 2025 | 809,305 | — | — | $51.2M | 4.2% | $63.3 |
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, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Coliseum Capital Management, LLC first disclose a ATKR position in 13F-HR filings?
Coliseum Capital Management, LLC first reported ATKORE INC (ATKR) on its 13F-HR filing for the period ending 2025-12-31 (Q4 2025). The position has appeared on 2 reported quarters within Pactolio's tracked window.
What was Coliseum Capital Management, LLC's most recent quarter-over-quarter share-count change in ATKR?
Between Q4 2025 and Q1 2026, Coliseum Capital Management, LLC added 137,765 shares of ATKR (+17.0%), bringing the total reported position to 947,070 shares at a market value of $55.8M.
Does the implied price-per-share represent Coliseum Capital Management, LLC's cost basis in ATKR?
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.