AdvanSix Inc. (ASIX) Ownership
ASIX ownership summary
as of October 17, 2026- Institutions
- 93.6% of shares outstanding
- Insiders
- 3.15% of shares outstanding
- Shares outstanding
- 27.0M
- Float
- 24.5M shares available to trade
- Short interest
- 2.24% 575K shares short
- Days to cover
- 2.07 short interest down 5.4% vs prior month
- Institutions 93.63%
- Insiders 3.15%
- Other investors 3.22%
ASIX top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 9.04% | 2.4M | $40.0M | +156,545 (+6.9%) | June 30, 2026 |
| 2 | CastleKnight Management LP | 5.89% | 1.6M | $26.0M | +958,537 (+151.7%) | June 30, 2026 |
| 3 | Dimensional Fund Advisors, Inc. | 5.21% | 1.4M | $23.0M | +96,343 (+7.3%) | June 30, 2026 |
| 4 | American Century Companies Inc | 5.05% | 1.4M | $22.3M | +236,709 (+21.0%) | June 30, 2026 |
| 5 | Aegis Financial Corporation | 4.48% | 1.2M | $19.8M | — | June 30, 2026 |
| 6 | Vanguard Capital Management, LLC | 4.26% | 1.2M | $18.8M | +27,898 (+2.5%) | June 30, 2026 |
| 7 | AllianceBernstein L.P. | 3.20% | 864K | $14.1M | −7,079 (−0.8%) | June 30, 2026 |
| 8 | AQR Capital Management LLC | 2.59% | 700K | $11.5M | +61,486 (+9.6%) | June 30, 2026 |
| 9 | Geode Capital Management, LLC | 2.56% | 693K | $11.3M | +40,268 (+6.2%) | June 30, 2026 |
| 10 | Arrowstreet Capital Limited Partnership | 2.46% | 665K | $10.9M | −63,348 (−8.7%) | June 30, 2026 |
| 11 | FMR Inc | 2.44% | 658K | $10.8M | +50,030 (+8.2%) | June 30, 2026 |
| 12 | Charles Schwab Investment Management Inc | 2.26% | 611K | $10.0M | −85,085 (−12.2%) | June 30, 2026 |
| 13 | State Street Corp | 2.18% | 588K | $9.6M | +21,019 (+3.7%) | June 30, 2026 |
| 14 | Solas Capital Management LLC | 2.12% | 571K | $9.4M | +54,295 (+10.5%) | June 30, 2026 |
| 15 | The Goldman Sachs Group Inc | 2.05% | 554K | $9.1M | +63,143 (+12.9%) | June 30, 2026 |
| 16 | LSV Asset Management | 2.03% | 549K | $9.0M | −1,900 (−0.3%) | June 30, 2026 |
| 17 | Two Sigma Investments LLC | 2.03% | 549K | $9.0M | −64,178 (−10.5%) | June 30, 2026 |
| 18 | Acadian Asset Management LLC | 1.93% | 521K | $8.5M | +299,487 (+135.3%) | June 30, 2026 |
| 19 | Morgan Stanley - Brokerage Accounts | 1.79% | 483K | $7.9M | +80,179 (+19.9%) | June 30, 2026 |
| 20 | Vanguard Portfolio Management, LLC | 1.30% | 351K | $5.7M | +64,306 (+22.5%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 14 holders added 2.2M shares and 5 cut 222K.
ASIX top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Avantis US Small Cap Value ETF | 4.92% | 1.3M | $21.7M | +1,368 (+0.1%) | September 30, 2026 |
| 2 | Aegis Value I | 4.35% | 1.2M | $19.2M | — | June 30, 2026 |
| 3 | Vanguard MStar Total Stk Mkt Idx Invest | 3.02% | 815K | $13.3M | — | August 31, 2026 |
| 4 | iShares Russell 2000 ETF | 2.61% | 704K | $11.5M | −8,128 (−1.1%) | September 30, 2026 |
| 5 | DFA US Small Cap Value I | 1.37% | 369K | $6.0M | +6,200 (+1.7%) | August 31, 2026 |
| 6 | Fidelity Small Cap Index | 1.09% | 295K | $4.8M | +1,956 (+0.7%) | July 31, 2026 |
| 7 | iShares Russell 2000 Value ETF | 0.95% | 257K | $4.2M | +390 (+0.2%) | September 30, 2026 |
| 8 | Schwab Fundamental U.S. Small CompanyETF | 0.79% | 214K | $3.5M | +301 (+0.1%) | September 30, 2026 |
| 9 | AB Small Cap Value Advisor | 0.61% | 166K | $2.7M | — | August 31, 2026 |
| 10 | DFA US Targeted Value I | 0.59% | 160K | $2.6M | — | August 31, 2026 |
| 11 | Dimensional US Small Cap Value ETF | 0.57% | 155K | $2.5M | — | September 24, 2026 |
| 12 | Vanguard Russell 2000 ETF | 0.57% | 154K | $2.5M | +3,079 (+2.0%) | August 31, 2026 |
| 13 | Schwab US Small-Cap ETF™ | 0.52% | 140K | $2.3M | +90 (+0.1%) | September 30, 2026 |
| 14 | Fidelity Extended Market Index | 0.51% | 137K | $2.2M | +947 (+0.7%) | August 31, 2026 |
| 15 | Dimensional US Targeted Value ETF | 0.49% | 133K | $2.2M | — | September 30, 2026 |
| 16 | AB Small Cap Core Z | 0.46% | 123K | $2.0M | −18,449 (−13.0%) | August 31, 2026 |
| 17 | EA Bridgeway Omni Small-Cap Value ETF | 0.44% | 119K | $2.0M | — | September 30, 2026 |
| 18 | DFA US Small Cap I | 0.42% | 115K | $1.9M | — | August 31, 2026 |
| 19 | DFA US Micro Cap I | 0.32% | 87K | $1.4M | +27 (+0.0%) | August 31, 2026 |
| 20 | iShares Micro-Cap ETF | 0.32% | 85K | $1.4M | −587 (−0.7%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ASIX insider transactions
latest 4| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-10-03 | Achilles B Kintiroglou | Sell | $20.00 | 577 | $11,540 |
| 2025-08-01 | Achilles B Kintiroglou | Sell | $20.18 | 571 | $11,523 |
| 2025-07-02 | Achilles B Kintiroglou | Sell | $24.85 | 571 | $14,189 |
| 2025-06-02 | Achilles B Kintiroglou | Sell | $23.65 | 571 | $13,504 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
ASIX shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ASIX
Institutional investors own 93.6% of AdvanSix's shares and insiders 3.15%. The largest holder is BlackRock Inc with 9.04% of the shares (2.4M), as of June 30, 2026. Among the top 20 institutions, 14 added shares and 5 reduced their stake in the latest filings. Short interest is 2.24% of the float, or 2.07 days of average trading volume. The share count fell 10.2% since 2014.
Related: ASIX analyst forecast, ASIX key metrics, ASIX dividend history. See the ASIX stock overview for the latest quote and news.
ASIX ownership FAQ
Who owns the most AdvanSix stock?
The largest shareholders of AdvanSix are BlackRock Inc (9.04%), CastleKnight Management LP (5.89%), Dimensional Fund Advisors, Inc. (5.21%), American Century Companies Inc (5.05%), Aegis Financial Corporation (4.48%).
What percentage of AdvanSix is owned by institutions?
Institutions hold 93.6% of AdvanSix's shares outstanding; insiders hold 3.15%.
Which funds own AdvanSix?
The largest fund holders of AdvanSix are Avantis US Small Cap Value ETF (4.92%), Aegis Value I (4.35%), Vanguard MStar Total Stk Mkt Idx Invest (3.02%), iShares Russell 2000 ETF (2.61%), DFA US Small Cap Value I (1.37%).
What is AdvanSix's short interest?
575K shares of AdvanSix were sold short, 2.24% of the float; at the average daily volume it would take 2.07 days to cover.
Are insiders buying or selling AdvanSix?
Of the latest 4 reported insider transactions in AdvanSix (since June 2, 2025), 0 were purchases and 4 were sales.
How many shares of AdvanSix are outstanding?
AdvanSix has 27.0M shares outstanding, of which 24.5M are in the public float.