Ack Asset Management Llc
Institutional manager — quarterly 13F holdings, Q ending 2026-03-31
Reported value
$801.1M
Q ending 2026-03-31
Prior quarter
$796.8M
Q ending 2025-12-31
Change
+0.6% QoQ · +31.6% YoY
Positions
20
reported holdings
Largest positions
All 20 reported positions, Q ending 2026-03-31. A manager can hold shares, calls and puts on the same security at once — such positions are listed as separate rows. Type: Shares = common stock, Put/Call = option positions (valued at the underlying), Principal = debt. Tickers link to stock pages where covered.
| Holding | Ticker | Type | Value ▼ | Shares |
|---|---|---|---|---|
| Mtrn | MTRN | Shares | $68.7M | 475K |
| Wms | WMS | Shares | $53.5M | 390K |
| Ats | ATS | Shares | $52.1M | 1.8M |
| Rog | ROG | Shares | $51.0M | 475K |
| Hlio | HLIO | Shares | $50.5M | 780K |
| Lfus | LFUS | Shares | $45.8M | 135K |
| Cnm | CNM | Shares | $44.5M | 900K |
| Novt | NOVT | Shares | $44.3M | 375K |
| Site | SITE | Shares | $43.9M | 330K |
| Aste | ASTE | Shares | $42.3M | 787K |
| Jhx | Shares | $39.8M | 2.1M | |
| Dxpe | DXPE | Shares | $36.3M | 260K |
| Cdnl | CDNL | Shares | $34.7M | 874K |
| Exp | EXP | Shares | $31.3M | 165K |
| Mbc | MBC | Shares | $30.7M | 3.7M |
| Gva | GVA | Shares | $30.0M | 250K |
| Cts | CTS | Shares | $27.9M | 584K |
| Swim | SWIM | Shares | $27.7M | 5.2M |
| Aero-Swx | Shares | $26.8M | 830K | |
| Clfd | CLFD | Shares | $19.5M | 735K |
Values as reported in public regulatory filings (USD); holdings are reported quarterly, up to 45 days after quarter end, and may contain reporting errors. Nothing here is investment advice.