Ranked by reported Q1 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. | 2.3M | $55.7M | -32.7% | 8.472% | 0.00% |
| 2 | DIMENSIONAL FUND ADVISORS LP | 1.3M | $32.0M | +0.6% | 4.863% | 0.01% |
| 3 | AEGIS FINANCIAL CORP | 1.2M | $29.5M | 0.0% | 4.487% | 5.08% |
| 4 | AMERICAN CENTURY COMPANIES INC | 1.1M | $27.5M | +10.3% | 4.179% | 0.01% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.1M | $27.4M | — | 4.167% | 0.00% |
| 6 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 728K | $17.8M | +78.2% | 2.702% | 0.01% |
| 7 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 696K | $17.0M | -2.1% | 2.583% | 0.00% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 652K | $15.9M | +2.5% | 2.419% | 0.00% |
| 9 | AQR CAPITAL MANAGEMENT LLC | 639K | $15.6M | +118.5% | 2.369% | 0.01% |
| 10 | ALLIANCEBERNSTEIN L.P. | 871K | $15.1M | -7.7% | 3.231% | 0.00% |
| 11 | TWO SIGMA INVESTMENTS, LP | 613K | $14.9M | +51.1% | 2.273% | 0.01% |
| 12 | FMR LLC | 608K | $14.8M | +20.1% | 2.256% | 0.00% |
| 13 | STATE STREET CORP | 567K | $13.8M | -11.3% | 2.102% | 0.00% |
| 14 | Solas Capital Management, LLC | 517K | $12.6M | -16.0% | 1.918% | 7.26% |
| 15 | GOLDMAN SACHS GROUP INC | 490K | $12.0M | +29.5% | 1.819% | 0.00% |
| 16 | JANE STREET GROUP, LLC | 405K | $9.9M | -22.5% | 1.504% | 0.09% |
| 17 | MORGAN STANLEY | 402K | $9.8M | +53.6% | 1.492% | 0.00% |
| 18 | Russell Investments Group, Ltd. | 330K | $8.0M | +12.4% | 1.224% | 0.01% |
| 19 | Invenomic Capital Management LP | 314K | $7.7M | -3.9% | 1.163% | 0.35% |
| 20 | Lloyd Harbor Capital Management, LLC | 290K | $7.1M | +286.7% | 1.076% | 3.06% |
| 21 | VANGUARD PORTFOLIO MANAGEMENT LLC | 286K | $7.0M | — | 1.062% | 0.00% |
| 22 | Qube Research & Technologies Ltd | 282K | $6.9M | -11.7% | 1.044% | 0.01% |
| 23 | DEPRINCE RACE & ZOLLO INC | 275K | $6.7M | -6.2% | 1.022% | 0.13% |
| 24 | CITADEL ADVISORS LLC | 273K | $6.7M | +111.7% | 1.013% | 0.00% |
| 25 | UBS Group AG | 266K | $6.5M | +87.4% | 0.986% | 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 Q1 2026, grouped by how each filer changed its position.
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 |
|---|---|---|---|---|---|---|
| Q1 2026 | 260 | 4.8% | 86.32% | +22.00 pp | $531M | +34% |
| Q4 2025 | 273 | +0.0% | 64.32% | 9.30 pp | $396M | 13% |
| Q3 2025 | 273 | 2.5% | 73.62% | 16.02 pp | $453M | 18% |
| Q2 2025 | 280 | +3.3% | 89.64% | 0.05 pp | $551M | 0.1% |
| Q1 2025 | 271 | 3.2% | 89.69% | 15.83 pp | $552M | 15% |
| Q4 2024 | 280 | +1.1% | 105.52% | 94.47 pp | $649M | 95% |
| Q3 2024 | 277 | +6.1% | 199.99% | +102.51 pp | $12.54B | +1992% |
| Q2 2024 | 261 | — | 97.48% | — | $599M | — |
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 Q1 2026 13F filings, institutional ownership of AdvanSix Inc. stands at 86.3%, held across 260 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of ASIX, with approximately 2,283,935 shares worth $0.06B as of Q1 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of ASIX, including TWO SIGMA INVESTMENTS, LP, JANE STREET GROUP, LLC, CITADEL ADVISORS LLC.
Our composite Smart Money Score for ASIX is 65 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
36 institutions opened new positions in ASIX during Q1 2026, while 49 fully exited. 185 added to existing positions and 34 trimmed.
ASIX institutional ownership rose by 22.00 percentage points quarter-over-quarter, with a net change of -13 holders.
The top 10 institutions account for 47.8% of all reported 13F value in ASIX, and the top 25 account for 75.0%.
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