Institutional Holders (2026 Q1)
265 + investorsExplore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in ATRO. Verified SEC 13F-HR filings.
| # | Investor | % of Portfolio | Shares | Mkt Value |
|---|---|---|---|---|
| 1 | EMERALD ADVISERS, LLC | 0.95% | 449,126 | $30.0M |
| 2 | HENNESSY ADVISORS INC | 0.91% | 377,800 | $25.2M |
| 3 | EMERALD MUTUAL FUND ADVISERS TRUST | 0.90% | 279,159 | $18.6M |
| 4 | Lisanti Capital Growth, LLC | 0.69% | 40,820 | $2.7M |
| 5 | PEREGRINE CAPITAL MANAGEMENT LLC | 0.28% | 113,520 | $7.6M |
| 6 | Skylands Capital, LLC | 0.25% | 28,800 | $1.9M |
| 7 | Ellsworth Advisors, LLC | 0.22% | 17,291 | $1.2M |
| 8 | HUNTER ASSOCIATES INVESTMENT MANAGEMENT LLC | 0.14% | 15,975 | $1K |
| 9 | Elyxium Wealth, LLC | 0.13% | 6,165 | $411K |
| 10 | Bayforest Capital Ltd | 0.11% | 1,490 | $99K |
| 11 | West Branch Capital LLC | 0.10% | 5,700 | $380K |
| 12 | ARCADIA INVESTMENT MANAGEMENT CORP/MI | 0.10% | 8,451 | $564K |
| 13 | First Bank & Trust | 0.08% | 7,596 | $507K |
| 14 | SIERRA SUMMIT ADVISORS LLC | 0.06% | 6,529 | $436K |
| 15 | KFA Private Wealth Group, LLC | 0.06% | 3,697 | $247K |
| 16 | O'Keefe Stevens Advisory, Inc. | 0.06% | 3,584 | $239K |
| 17 | Abel Hall, LLC | 0.05% | 3,303 | $220K |
| 18 | GSA CAPITAL PARTNERS LLP | 0.05% | 11,053 | — |
| 19 | Y-Intercept (Hong Kong) Ltd | 0.03% | 26,683 | $1.8M |
| 20 | Covestor Ltd | 0.03% | 723 | — |
| 21 | J.W. COLE ADVISORS, INC. | 0.03% | 13,578 | $906K |
| 22 | EQUITABLE TRUST CO | 0.03% | 8,599 | $574K |
| 23 | Verdence Capital Advisors LLC | 0.03% | 6,552 | $437K |
| 24 | ARS Investment Partners, LLC | 0.02% | 5,536 | $369K |
| 25 | Wealthspire Advisors, LLC | 0.02% | 29,434 | $2.0M |
| Investor | Ownership History |
% of Portfolio | Prev % | Rank | Conviction | Avg Buy Price | 13F Score™ 3Y / 7Y | Sell Timing | Shares | Mkt Value | Change | Change % | Source | Quarter | Filed |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|