Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in ASIX held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 2.4M | $48.5M | +6.9% | 9.053% | 0.00% |
| 2 | CastleKnight Management LP | 1.6M | $31.6M | +56.4% | 5.899% | 0.43% |
| 3 | DIMENSIONAL FUND ADVISORS LP | 1.4M | $28.0M | +7.3% | 5.220% | 0.01% |
| 4 | AMERICAN CENTURY COMPANIES INC | 1.4M | $27.1M | +21.0% | 5.057% | 0.01% |
| 5 | AEGIS FINANCIAL CORP | 1.2M | $24.0M | 0.0% | 4.487% | 3.80% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | $22.9M | +2.5% | 4.271% | 0.00% |
| 7 | ALLIANCEBERNSTEIN L.P. | 864K | $21.1M | -0.8% | 3.204% | 0.01% |
| 8 | AQR CAPITAL MANAGEMENT LLC | 700K | $13.9M | +9.6% | 2.597% | 0.00% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 693K | $13.8M | +6.2% | 2.569% | 0.00% |
| 10 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 665K | $13.2M | -8.7% | 2.466% | 0.01% |
| 11 | FMR LLC | 658K | $13.1M | +8.2% | 2.442% | 0.00% |
| 12 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 611K | $12.2M | -12.2% | 2.267% | 0.00% |
| 13 | STATE STREET CORP | 588K | $11.7M | +3.7% | 2.180% | 0.00% |
| 14 | Solas Capital Management, LLC | 571K | $11.4M | +10.5% | 2.119% | 6.09% |
| 15 | GOLDMAN SACHS GROUP INC | 554K | $11.0M | +12.9% | 2.053% | 0.00% |
| 16 | TWO SIGMA INVESTMENTS, LP | 549K | $10.9M | -10.5% | 2.035% | 0.01% |
| 17 | MORGAN STANLEY | 483K | $9.6M | +19.9% | 1.790% | 0.00% |
| 18 | VANGUARD PORTFOLIO MANAGEMENT LLC | 351K | $7.0M | +22.5% | 1.301% | 0.00% |
| 19 | Empowered Funds, LLC | 303K | $6.0M | +200.5% | 1.123% | 0.03% |
| 20 | NORTHERN TRUST CORP | 255K | $5.1M | +6.7% | 0.947% | 0.00% |
| 21 | TOWLE & CO | 249K | $5.0M | +1664.7% | 0.924% | 1.68% |
| 22 | UBS Group AG | 240K | $4.8M | -9.5% | 0.892% | 0.00% |
| 23 | Qube Research & Technologies Ltd | 238K | $4.7M | -15.6% | 0.882% | 0.00% |
| 24 | JACOBS LEVY EQUITY MANAGEMENT, INC | 236K | $4.7M | +19.2% | 0.877% | 0.02% |
| 25 | Russell Investments Group, Ltd. | 235K | $4.7M | -28.9% | 0.870% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in ASIX — a direct measure of their conviction.
Filings activity in ASIX during Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new ASIX position in Q2 2026
Institutions that fully closed their ASIX position in Q2 2026
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 254 | 3.4% | 92.00% | +2.37 pp | $473M | 15% |
| Q1 2026 | 263 | 3.7% | 89.63% | +0.19 pp | $557M | +41% |
| Q4 2025 | 273 | 0.4% | 89.44% | 1.95 pp | $396M | 13% |
| Q3 2025 | 274 | 2.1% | 91.39% | 0.23 pp | $454M | 18% |
| Q2 2025 | 280 | +3.3% | 91.62% | +1.31 pp | $551M | 0.1% |
| Q1 2025 | 271 | 3.2% | 90.31% | +0.63 pp | $552M | 15% |
| Q4 2024 | 280 | +1.1% | 89.68% | 110.31 pp | $649M | 95% |
| Q3 2024 | 277 | — | 199.99% | — | $12.54B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying ASIX stock.
Based on Q2 2026 13F filings, institutional ownership of AdvanSix Inc. stands at 92.0%, held across 254 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of ASIX, with approximately 2,440,480 shares worth $0.05B as of Q2 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of ASIX, including TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for ASIX is 53 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
22 institutions opened new positions in ASIX during Q2 2026, while 29 fully exited. 39 added to existing positions and 183 trimmed.
ASIX institutional ownership rose by 2.37 percentage points quarter-over-quarter, with a net change of -9 holders.
The top 10 institutions account for 51.6% of all reported 13F value in ASIX, and the top 25 account for 77.3%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
AdvanSix Inc. (ASIX) Institutional Ownership