Significant Ownership of ACK Asset Management LLC
- Large-stake filing summary
-
- Recent SEC Schedule 13D/G filings for ACK Asset Management LLC focus on large-stake beneficial ownership disclosures and amendments.
- Use this view to spot new large holders, amended positions, and activist-style ownership evidence.
- Manager signature
- Andres Aguirre - CCO
- Manager location
- Greenwich, CT
Large-stake snapshot
1 signal
Manager
Names, identifiers, and filing context for this profile.
2 identity fields
Follow Filing Activity
Follow ACK Asset Management LLC with Pro and return when a new Schedule 13D/G filing changes the record on this page.
Pro alert delivery is coming soon and remains tied to source-backed filing changes rather than inferred market advice.
CIK context first
Continue from ACK Asset Management LLC
Significant Ownership of ACK Asset Management LLC
| Sym | Company | Class | Ownership | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|---|
| CLFD | Clearfield, Inc. | Common Stock | 5.1% | $18,798,994 | +$608,810 | 710,200 | +3.3% | ACK Asset Management LLC | 20 Feb 2026 |
| ATRO | ASTRONICS CORP | Common Stock | 4% | $56,862,900 | 1,230,000 | ACK Asset Management LLC | 30 Sep 2025 |
Schedules 13D/G Reported by ACK Asset Management LLC:
| Sym | Target | Class | Ownership | Change | Current shares | Change | Value | Reporting name | Form | Report period | Filing date |
|---|
Schedule rows are parsed from SEC 13D/G filings. Open the linked filing or target page to verify the reported ownership and shares.