AdvanSix Inc. (ASIX) ownership: Top institutional holder: BlackRock, Inc. ($55.73M). Insider activity: Net Seller (5 buys, 15 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock, Inc. | 2283935.00 | $55.73M | 2026-03-31 |
| BlackRock Fund Advisors | 1744617.00 | $38.63M | 2016-12-31 |
| DIMENSIONAL FUND ADVISORS LP | 1311006.00 | $31.99M | 2026-03-31 |
| VANGUARD GROUP INC | 1706709.00 | $29.53M | 2025-12-31 |
| AEGIS FINANCIAL CORP | 1209629.00 | $29.51M | 2026-03-31 |
| AMERICAN CENTURY COMPANIES INC | 1126637.00 | $27.49M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1123457.00 | $27.41M | 2026-03-31 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 728292.00 | $17.77M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-04-27 | |
| Sell | null | 2026-04-27 | |
| Sell | null | 2026-04-27 | |
| Sell | null | 2026-03-31 | |
| Sell | null | 2026-03-31 | |
| Buy | null | 2026-03-24 | |
| Sell | null | 2026-03-24 | |
| Buy | null | 2026-02-28 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.