Latest ACK Asset Management LLC Stock Portfolio
$801Million– No. of Holdings #20
ACK Asset Management LLC Performance:
2026 Q1: 4.59%YTD: 4.59%2025: 15.47%
Performance for 2026 Q1 is 4.59%, and YTD is 4.59%, and 2025 is 15.47%.
About ACK Asset Management LLC and 13F Hedge Fund Stock Holdings
On 2026-05-15, the fund reported it's updated stock portfolio. In the 13F Holdings report, ACK Asset Management LLC reported an equity portfolio of $801.1 Millions as of 31 Mar, 2026.
The top stock holdings of ACK Asset Management LLC are MTRN, WMS, . The fund has invested 8.6% of it's portfolio in MTRN and 6.7% of portfolio in WMS.
The fund managers got completely rid off ENS (ENS), ATRO (ATRO) and AIN (AIN) stocks. They significantly reduced their stock positions in GVA (GVA). ACK Asset Management LLC opened new stock positions in LFUS (LFUS), CTS (CTS) and SWIM (SWIM). The fund showed a lot of confidence in some stocks as they added substantially to AERO-SWX, CLFD (CLFD) and ROG (ROG).
The top stock holdings of ACK Asset Management LLC are MTRN, WMS, . The fund has invested 8.6% of it's portfolio in MTRN and 6.7% of portfolio in WMS.
The fund managers got completely rid off ENS (ENS), ATRO (ATRO) and AIN (AIN) stocks. They significantly reduced their stock positions in GVA (GVA). ACK Asset Management LLC opened new stock positions in LFUS (LFUS), CTS (CTS) and SWIM (SWIM). The fund showed a lot of confidence in some stocks as they added substantially to AERO-SWX, CLFD (CLFD) and ROG (ROG).
ACK Asset Management LLC Equity Portfolio Value
Last Reported on: 15 May, 2026
ACK Asset Management LLC Annual Return Estimates Vs S&P 500
Our best estimate is that ACK Asset Management LLC made a return of 4.59% in the last quarter. In trailing 12 months, it's portfolio return was 34.55%.
- Performance
- S&P 500
Sector Distribution
ACK Asset Management LLC has about 41% of it's holdings in Industrials sector.
- Industrials
- Technology
- Others
- Basic Materials
| Sector | % |
|---|---|
| Industrials | 41 |
| Technology | 23.5 |
| Others | 23 |
| Basic Materials | 12.5 |
Market Cap. Distribution
ACK Asset Management LLC has about 12.2% of it's portfolio invested in the large-cap and mega-cap stocks.
- MID-CAP
- UNALLOCATED
- SMALL-CAP
- LARGE-CAP
| Category | % |
|---|---|
| MID-CAP | 43.8 |
| UNALLOCATED | 23 |
| SMALL-CAP | 21 |
| LARGE-CAP | 12.2 |
Stocks belong to which Index?
About 49.7% of the stocks held by ACK Asset Management LLC either belong to S&P 500 or RUSSELL 2000 index.
- Others
- RUSSELL 2000
| Index | % |
|---|---|
| Others | 50.3 |
| RUSSELL 2000 | 49.7 |
ACK Asset Management LLC Holdings Map
This heatmap illustrates the top 50 positions within the fund's portfolio.
Current Stock Holdings of ACK Asset Management LLC
ACK Asset Management LLC has 20 stocks in it's portfolio. About 62% of the portfolio is in top 10 stocks. proved to be the most loss making stock for the portfolio. was the most profitable stock for ACK Asset Management LLC last quarter.
Last Reported on: 15 May, 2026| Ticker | Namesorted ascending | % Portfolio | Shares Held | $ Value | Type | % Change | Options | |
|---|---|---|---|---|---|---|---|---|
| AIN | ain | 0.00 | 0.00 | 0.00 | sold off | -100 | ||
| APOG | apog | 0.00 | 0.00 | 0.00 | sold off | -100 | ||
| ASTE | aste | 5.29 | 786,500 | 42,345,200 | unchanged | 0.00 | ||
| ATRO | atro | 0.00 | 0.00 | 0.00 | sold off | -100 | ||
| CLFD | clfd | 2.43 | 735,200 | 19,460,700 | added | 17.59 | ||
| CNM | cnm | 5.55 | 900,000 | 44,460,000 | unchanged | 0.00 | ||
| CTOS | ctos | 0.00 | 0.00 | 0.00 | sold off | -100 | ||
| CTS | cts | 3.48 | 584,000 | 27,891,800 | new | |||
| DXPE | dxpe | 4.54 | 260,000 | 36,329,800 | added | 8.33 | ||
| ENS | ens | 0.00 | 0.00 | 0.00 | sold off | -100 | ||
| ERII | erii | 0.00 | 0.00 | 0.00 | sold off | -100 | ||
| EXP | exp | 3.90 | 165,000 | 31,259,200 | unchanged | 0.00 | ||
| GVA | gva | 3.74 | 250,000 | 29,970,000 | reduced | -50.00 | ||
| HLIO | hlio | 6.30 | 780,378 | 50,498,300 | unchanged | 0.00 | ||
| LFUS | lfus | 5.72 | 135,000 | 45,812,200 | new | |||
| MTRN | mtrn | 8.57 | 474,800 | 68,679,800 | unchanged | 0.00 | ||
| NOVT | novt | 5.53 | 375,000 | 44,291,200 | unchanged | 0.00 | ||
| ROG | rog | 6.36 | 475,000 | 50,981,800 | added | 8.77 | ||
| SITE | site | 5.48 | 330,000 | 43,926,300 | unchanged | 0.00 | ||
| SWIM | swim | 3.46 | 5,160,000 | 27,709,200 | new | |||