ACK Asset Management LLC: ATS (ATS): Quarterly 13F Position History
As of Q1 2026, ACK Asset Management LLC reported 1,846,196 shares of ATS (ATS), worth $52.1M and representing 6.5% of its 13F equity book. The position first appeared in Q4 2022 and has been disclosed across 14 13F-HR filings in Pactolio's tracked window.
- 1,846,196Shares Held (Latest Filing)
- $52.1MReported Market Value (Latest Filing)
- 6.5%Portfolio Weight (% of 13F Equity Book)
- 0Quarter-over-Quarter Share Change
- +$1.2MQuarter-over-Quarter Value Change
- 2,255,889Peak 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 |
|---|---|---|---|---|---|---|
| Q1 2026 | 1,846,196 | 0 | — | $52.1M | 6.5% | $28.2 |
| Q4 2025 | 1,846,196 | 0 | — | $50.8M | 6.4% | $27.5 |
| Q3 2025 | 1,846,196 | 0 | — | $48.4M | 6.1% | $26.2 |
| Q2 2025 | 1,846,196 | 167,000 | -8.3% | $58.9M | 7.7% | $31.9 |
| Q1 2025 | 2,013,196 | 80,000 | -3.8% | $50.2M | 8.2% | $24.9 |
| Q4 2024 | 2,093,196 | 162,693 | -7.2% | $63.8M | 8.5% | $30.5 |
| Q3 2024 | 2,255,889 | +255,889 | +12.8% | $65.5M | 8.1% | $29.1 |
| Q2 2024 | 2,000,000 | +460,000 | +29.9% | $64.6M | 8.0% | $32.3 |
| Q1 2024 | 1,540,000 | +235,020 | +18.0% | $51.9M | 6.1% | $33.7 |
| Q4 2023 | 1,304,980 | +83,639 | +6.8% | $56.2M | 6.8% | $43.1 |
| Q3 2023 | 1,221,341 | 0 | — | $52.1M | 7.6% | $42.6 |
| Q2 2023 | 1,221,341 | +146,341 | +13.6% | $56.3M | 7.0% | $46.1 |
| Q1 2023 | 1,075,000 | 0 | — | $45.0M | 6.9% | $41.9 |
| Q4 2022 | 1,075,000 | — | — | $33.4M | 6.1% | $31.1 |
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, not the manager's cost basis. See the full methodology document for the normalization rules.
When did ACK Asset Management LLC first disclose a ATS position in 13F-HR filings?
ACK Asset Management LLC first reported ATS (ATS) on its 13F-HR filing for the period ending 2022-12-31 (Q4 2022). 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 ATS?
ACK Asset Management LLC held the same 1,846,196 shares of ATS between Q4 2025 and Q1 2026 — the reported share count was unchanged quarter-over-quarter.
Does the implied price-per-share represent ACK Asset Management LLC's cost basis in ATS?
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.