Who owns AdvanSix (ASIX)
Which tracked institutional funds hold ASIX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ASIX company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on ASIX is one-sided between 2026-Q1 and 2026-Q2: 19 added or opened and 64 trimmed or exited — on balance reducing.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
ASIX’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes ASIX more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in ASIX divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 240 tracked filers holding ASIX, 102 increased or opened the position and 106 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in ASIX between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 6
- NORGES BANK$2M
- Numerai GP LLC$1M
- Mutual Advisors, LLC$825K
- Corient Private Wealth LP$593K
- FOX RUN MANAGEMENT, L.L.C.$568K
- Jain Global LLC$530K
Full exits 15
- LSV ASSET MANAGEMENT$13M
- Lloyd Harbor Capital Management, LLC$7M
- ACADIAN ASSET MANAGEMENT LLC$5M
- Point72 Asset Management, L.P.$5M
- HRT FINANCIAL LP$3M
- Walnut Level Capital LLC$2M
Largest adds
- CastleKnight Management LP$16M
- ALLIANCEBERNSTEIN L.P.$6M
- TOWLE & CO$5M
- Empowered Funds, LLC$4M
- UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$2M
- Nuveen, LLC$2M
Largest trims
- JANE STREET GROUP, LLC$8M
- BlackRock, Inc.$7M
- AEGIS FINANCIAL CORP$5M
- Invenomic Capital Management LP$5M
- CHARLES SCHWAB INVESTMENT MANAGEMENT INC$5M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$5M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 2,440,480 | $49M | 10.3% | 2026-Q2 |
| CastleKnight Management LP added | 1,590,318 | $32M | 6.7% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 1,407,349 | $28M | 5.9% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 1,363,346 | $27M | 5.8% | 2026-Q2 |
| AEGIS FINANCIAL CORP | 1,209,629 | $24M | 5.1% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 1,151,355 | $23M | 4.9% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 863,897 | $21M | 4.5% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 700,057 | $14M | 3.0% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 692,516 | $14M | 2.9% | 2026-Q2 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 664,944 | $13M | 2.8% | 2026-Q2 |
| FMR LLC added | 658,319 | $13M | 2.8% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 611,277 | $12M | 2.6% | 2026-Q2 |
| STATE STREET CORP added | 587,660 | $12M | 2.5% | 2026-Q2 |
| Solas Capital Management, LLC added | 571,324 | $11M | 2.4% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 553,525 | $11M | 2.3% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP trimmed | 548,516 | $11M | 2.3% | 2026-Q2 |
| MORGAN STANLEY added | 482,520 | $10M | 2.0% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 350,655 | $7M | 1.5% | 2026-Q2 |
| Empowered Funds, LLC added | 302,687 | $6M | 1.3% | 2026-Q2 |
| NORTHERN TRUST CORP added | 255,276 | $5M | 1.1% | 2026-Q2 |
| TOWLE & CO added | 249,091 | $5M | 1.1% | 2026-Q2 |
| UBS Group AG trimmed | 240,480 | $5M | 1.0% | 2026-Q2 |
| Qube Research & Technologies Ltd trimmed | 237,789 | $5M | 1.0% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC added | 236,288 | $5M | 1.0% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 234,677 | $5M | 1.0% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL added | 224,886 | $4M | 1.0% | 2026-Q2 |
| DONALD SMITH & CO., INC. trimmed | 212,680 | $4M | 0.9% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 212,037 | $4M | 0.9% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 205,610 | $4M | 0.9% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 195,244 | $4M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 178,736 | $4M | 0.8% | 2026-Q2 |
| Mudita Advisors LLP added | 170,490 | $3M | 0.7% | 2026-Q2 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 170,212 | $3M | 0.7% | 2026-Q2 |
| Creative Planning added | 148,891 | $3M | 0.6% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 147,002 | $3M | 0.6% | 2026-Q2 |
| Lumbard & Kellner, LLC added | 146,212 | $3M | 0.6% | 2026-Q2 |
| Nuveen, LLC added | 144,750 | $3M | 0.6% | 2026-Q2 |
| DEPRINCE RACE & ZOLLO INC trimmed | 140,933 | $3M | 0.6% | 2026-Q2 |
| CenterBook Partners LP trimmed | 136,684 | $3M | 0.6% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 132,402 | $3M | 0.6% | 2026-Q2 |
| Invenomic Capital Management LP trimmed | 128,043 | $3M | 0.5% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 124,574 | $2M | 0.5% | 2026-Q2 |
| Ballast Asset Management, LP trimmed | 116,048 | $2M | 0.5% | 2026-Q2 |
| NORGES BANK added | 113,300 | $2M | 0.5% | 2026-Q2 |
| SEI INVESTMENTS CO added | 110,787 | $2M | 0.5% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 102,523 | $2M | 0.4% | 2026-Q2 |
| Bank of New York Mellon Corp added | 96,263 | $2M | 0.4% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 95,873 | $2M | 0.4% | 2026-Q2 |
| Vanguard Global Advisers, LLC trimmed | 94,385 | $2M | 0.4% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 91,060 | $2M | 0.4% | 2026-Q2 |
| Trexquant Investment LP added | 89,791 | $2M | 0.4% | 2026-Q2 |
| Squarepoint Ops LLC added | 82,246 | $2M | 0.3% | 2026-Q2 |
| JANE STREET GROUP, LLC trimmed | 79,889 | $2M | 0.3% | 2026-Q2 |
| Waterfront Wealth Inc. trimmed | 74,204 | $2M | 0.3% | 2026-Q2 |
| Quantinno Capital Management LP added | 73,632 | $1M | 0.3% | 2026-Q2 |
| ExodusPoint Capital Management, LP added | 68,209 | $1M | 0.3% | 2026-Q2 |
| Numerai GP LLC new | 67,040 | $1M | 0.3% | 2026-Q2 |
| Invesco Ltd. trimmed | 57,587 | $1M | 0.2% | 2026-Q2 |
| IEQ CAPITAL, LLC added | 53,482 | $1M | 0.2% | 2026-Q2 |
| Fisher Asset Management, LLC trimmed | 50,161 | $997K | 0.2% | 2026-Q2 |
| PDT Partners, LLC | 42,168 | $838K | 0.2% | 2026-Q2 |
| Mutual Advisors, LLC new | 41,501 | $825K | 0.2% | 2026-Q2 |
| Mariner, LLC added | 41,039 | $816K | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 37,731 | $750K | 0.2% | 2026-Q2 |
| Inspire Investing, LLC added | 34,737 | $691K | 0.1% | 2026-Q2 |
| MARTINGALE ASSET MANAGEMENT L P trimmed | 31,433 | $625K | 0.1% | 2026-Q2 |
| SummerHaven Investment Management, LLC | 31,381 | $624K | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 31,379 | $624K | 0.1% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD trimmed | 30,800 | $612K | 0.1% | 2026-Q2 |
| Corient Private Wealth LP new | 29,825 | $593K | 0.1% | 2026-Q2 |
| Engineers Gate Manager LP trimmed | 29,617 | $589K | 0.1% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd trimmed | 29,414 | $585K | 0.1% | 2026-Q2 |
| FOX RUN MANAGEMENT, L.L.C. new | 28,566 | $568K | 0.1% | 2026-Q2 |
| STIFEL FINANCIAL CORP trimmed | 27,941 | $555K | 0.1% | 2026-Q2 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC added | 27,632 | $317K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 27,196 | $541K | 0.1% | 2026-Q2 |
| Jain Global LLC added | 26,673 | $530K | 0.1% | 2026-Q2 |
| MERCER GLOBAL ADVISORS INC /ADV added | 25,149 | $500K | 0.1% | 2026-Q2 |
| Verity Asset Management, Inc. added | 24,211 | $481K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 24,153 | $480K | 0.1% | 2026-Q2 |
| COMPASS FINANCIAL MANAGEMENT LLC new | 23,054 | $458K | 0.1% | 2026-Q2 |
| Campbell & CO Investment Adviser LLC added | 21,385 | $425K | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 21,143 | $421K | 0.1% | 2026-Q2 |
| Verdence Capital Advisors LLC trimmed | 20,356 | $405K | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 19,244 | $383K | 0.1% | 2026-Q2 |
| SHEETS SMITH WEALTH MANAGEMENT added | 18,314 | $364K | 0.1% | 2026-Q2 |
| US BANCORP \DE\ trimmed | 17,443 | $347K | 0.1% | 2026-Q2 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO added | 15,957 | $317K | 0.1% | 2026-Q2 |
| nVerses Capital, LLC added | 15,821 | $315K | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC | 15,457 | $307K | 0.1% | 2026-Q2 |
| CITIGROUP INC added | 15,273 | $304K | 0.1% | 2026-Q2 |
| XTX Topco Ltd trimmed | 15,016 | $299K | 0.1% | 2026-Q2 |
| STRS OHIO added | 14,800 | $294K | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 14,432 | $287K | 0.1% | 2026-Q2 |
| Cerity Partners LLC added | 13,538 | $269K | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 12,361 | $246K | 0.1% | 2026-Q2 |
| NorthCrest Asset Manangement, LLC added | 12,180 | $243K | 0.1% | 2026-Q2 |
| Odyssean, LLC new | 12,061 | $240K | 0.1% | 2026-Q2 |
| ALGERT GLOBAL LLC trimmed | 11,680 | $232K | 0.0% | 2026-Q2 |
| Vanguard Personalized Indexing Management, LLC added | 10,763 | $214K | 0.0% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.