AdvanSix Inc
Ownership
Ownership Structure
Who owns AdvanSix Inc (ASIX)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 90.7% of the shares are freely tradable; institutional investors hold 93.5%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 9.04 | 2,440,480 | +6.9 | 06/30/2026 |
| CastleKnight Management LP | 5.89 | 1,590,318 | +151.7 | 06/30/2026 |
| Dimensional Fund Advisors, Inc. | 5.21 | 1,407,349 | +7.3 | 06/30/2026 |
| American Century Companies Inc | 5.05 | 1,363,346 | +21.0 | 06/30/2026 |
| Aegis Financial Corporation | 4.48 | 1,209,629 | +0.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.26 | 1,151,355 | +2.5 | 06/30/2026 |
| AllianceBernstein L.P. | 3.20 | 863,897 | -0.8 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Avantis US Small Cap Value ETF | 4.92 | 1,327,112 | +0.1 | 09/30/2026 |
| Aegis Value I | 4.35 | 1,174,992 | +0.0 | 06/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 3.02 | 815,299 | +0.0 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Williams Patrick | Director | 44,219 | 685,395 $ | Oct 6, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 6, 2026 | Williams Patrick | Director | Other | 785 | 16.70 | 13,110 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 2, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.