Who owns ASC (ASC)
Which tracked institutional funds hold ASC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ASC company fundamentals →
Ownership as of the 2026-Q1 13F filings. 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 ASC is one-sided between 2025-Q4 and 2026-Q1: 72 added or opened and 15 trimmed or exited — on balance accumulating.
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
ASC’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 ASC more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in ASC 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 2025-Q4 and 2026-Q1, across 192 tracked filers holding ASC, 103 increased or opened the position and 86 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 ASC between the 2025-Q4 and 2026-Q1 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 14
- Hartree Partners, LP$8M
- Connor, Clark & Lunn Investment Management Ltd.$6M
- VANGUARD PORTFOLIO MANAGEMENT LLC$4M
- MACKENZIE FINANCIAL CORP$3M
- SPROTT INC.$2M
- Numerai GP LLC$1M
Full exits 8
- VANGUARD GROUP INC$4M
- MOORE CAPITAL MANAGEMENT, LP$3M
- GLOBEFLEX CAPITAL L P$2M
- Lighthouse Investment Partners, LLC$1M
- PRINCIPAL FINANCIAL GROUP INC$838K
- RAYMOND JAMES FINANCIAL INC$837K
Largest adds
- BlackRock, Inc.$20M
- Nuveen, LLC$18M
- ACADIAN ASSET MANAGEMENT LLC$13M
- DIMENSIONAL FUND ADVISORS LP$12M
- RENAISSANCE TECHNOLOGIES LLC$11M
- WELLINGTON MANAGEMENT GROUP LLP$10M
Largest trims
- AMERIPRISE FINANCIAL INC$6M
- FRANKLIN RESOURCES INC$3M
- ROYCE & ASSOCIATES LP$2M
- JANE STREET GROUP, LLC$1M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$1M
- Marex Group plc$900K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 3,180,059 | $48M | 9.3% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 2,452,462 | $37M | 7.1% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 1,803,064 | $27M | 5.2% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 1,736,632 | $26M | 5.1% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 1,706,527 | $26M | 5.0% | 2026-Q1 |
| Nuveen, LLC added | 1,489,827 | $23M | 4.3% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC added | 1,376,632 | $21M | 4.0% | 2026-Q1 |
| PRIVATE MANAGEMENT GROUP INC trimmed | 1,213,813 | $19M | 3.5% | 2026-Q1 |
| Flat Footed LLC trimmed | 1,004,696 | $15M | 2.9% | 2026-Q1 |
| Aristotle Capital Boston, LLC trimmed | 938,662 | $14M | 2.7% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 908,778 | $14M | 2.6% | 2026-Q1 |
| RBF Capital, LLC | 901,880 | $14M | 2.6% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 817,041 | $12M | 2.4% | 2026-Q1 |
| TICINO WEALTH trimmed | 706,367 | $12M | 2.2% | 2026-Q1 |
| MORGAN STANLEY trimmed | 752,983 | $11M | 2.2% | 2026-Q1 |
| STATE STREET CORP trimmed | 624,017 | $10M | 1.8% | 2026-Q1 |
| Hartree Partners, LP new | 515,000 | $8M | 1.5% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 495,816 | $8M | 1.4% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 478,815 | $7M | 1.4% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 466,113 | $7M | 1.4% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 426,788 | $7M | 1.2% | 2026-Q1 |
| FEDERATED HERMES, INC. added | 403,079 | $6M | 1.2% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. added | 397,541 | $6M | 1.2% | 2026-Q1 |
| Trexquant Investment LP added | 318,013 | $5M | 0.9% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 317,733 | $5M | 0.9% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 310,759 | $5M | 0.9% | 2026-Q1 |
| SEI INVESTMENTS CO added | 305,706 | $5M | 0.9% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 303,825 | $5M | 0.9% | 2026-Q1 |
| Marnell Management LLC trimmed | 299,357 | $5M | 0.9% | 2026-Q1 |
| CastleKnight Management LP added | 294,376 | $4M | 0.9% | 2026-Q1 |
| NORTHERN TRUST CORP added | 242,859 | $4M | 0.7% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 239,844 | $4M | 0.7% | 2026-Q1 |
| ROYCE & ASSOCIATES LP trimmed | 234,530 | $4M | 0.7% | 2026-Q1 |
| CSM Advisors, LLC trimmed | 230,441 | $4M | 0.7% | 2026-Q1 |
| MACKENZIE FINANCIAL CORP added | 226,692 | $3M | 0.7% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 225,425 | $3M | 0.7% | 2026-Q1 |
| Empowered Funds, LLC trimmed | 214,716 | $3M | 0.6% | 2026-Q1 |
| UBS Group AG added | 199,225 | $3M | 0.6% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 192,772 | $3M | 0.6% | 2026-Q1 |
| Quantinno Capital Management LP added | 184,844 | $3M | 0.5% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 175,919 | $3M | 0.5% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 165,213 | $3M | 0.5% | 2026-Q1 |
| Y-Intercept (Hong Kong) Ltd added | 164,436 | $3M | 0.5% | 2026-Q1 |
| Quantbot Technologies LP added | 152,561 | $2M | 0.4% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 139,639 | $2M | 0.4% | 2026-Q1 |
| LOS ANGELES CAPITAL MANAGEMENT LLC added | 138,395 | $2M | 0.4% | 2026-Q1 |
| SPROTT INC. new | 137,300 | $2M | 0.4% | 2026-Q1 |
| Glenorchy Capital Ltd added | 133,016 | $2M | 0.4% | 2026-Q1 |
| Squarepoint Ops LLC added | 124,705 | $2M | 0.4% | 2026-Q1 |
| XTX Topco Ltd added | 115,764 | $2M | 0.3% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 104,700 | $2M | 0.3% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 104,053 | $2M | 0.3% | 2026-Q1 |
| Numerai GP LLC trimmed | 98,100 | $1M | 0.3% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 91,888 | $1M | 0.3% | 2026-Q1 |
| AEGIS FINANCIAL CORP | 89,612 | $1M | 0.3% | 2026-Q1 |
| Campbell & CO Investment Adviser LLC added | 88,646 | $1M | 0.3% | 2026-Q1 |
| Marex Group plc trimmed | 80,694 | $1M | 0.2% | 2026-Q1 |
| MARTINGALE ASSET MANAGEMENT L P added | 79,503 | $1M | 0.2% | 2026-Q1 |
| HRT FINANCIAL LP added | 70,327 | $1M | 0.2% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 67,765 | $1M | 0.2% | 2026-Q1 |
| BARCLAYS PLC trimmed | 67,404 | $1M | 0.2% | 2026-Q1 |
| CITIGROUP INC added | 64,593 | $985K | 0.2% | 2026-Q1 |
| FOX RUN MANAGEMENT, L.L.C. added | 63,231 | $948K | 0.2% | 2026-Q1 |
| SIMPLEX TRADING, LLC added | 60,581 | $924K | 0.2% | 2026-Q1 |
| LSV ASSET MANAGEMENT trimmed | 55,800 | $851K | 0.2% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 54,073 | $811K | 0.2% | 2026-Q1 |
| Dynamic Technology Lab Private Ltd added | 51,801 | $790K | 0.2% | 2026-Q1 |
| Boston Partners trimmed | 49,786 | $759K | 0.1% | 2026-Q1 |
| Invesco Ltd. added | 49,610 | $757K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 47,849 | $730K | 0.1% | 2026-Q1 |
| ExodusPoint Capital Management, LP trimmed | 47,716 | $728K | 0.1% | 2026-Q1 |
| Corient Private Wealth LLC new | 44,908 | $685K | 0.1% | 2026-Q1 |
| FMR LLC added | 44,645 | $681K | 0.1% | 2026-Q1 |
| HSBC HOLDINGS PLC added | 42,920 | $656K | 0.1% | 2026-Q1 |
| GSA CAPITAL PARTNERS LLP added | 42,744 | $652K | 0.1% | 2026-Q1 |
| CenterBook Partners LP trimmed | 42,570 | $649K | 0.1% | 2026-Q1 |
| Engineers Gate Manager LP added | 39,951 | $609K | 0.1% | 2026-Q1 |
| Graham Capital Management, L.P. added | 39,497 | $602K | 0.1% | 2026-Q1 |
| Koss-Olinger Consulting, LLC trimmed | 39,488 | $602K | 0.1% | 2026-Q1 |
| Vident Advisory, LLC trimmed | 39,215 | $598K | 0.1% | 2026-Q1 |
| Aquatic Capital Management LLC added | 38,472 | $587K | 0.1% | 2026-Q1 |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 32,882 | $501K | 0.1% | 2026-Q1 |
| STIFEL FINANCIAL CORP added | 32,339 | $493K | 0.1% | 2026-Q1 |
| SCOTIA CAPITAL INC. trimmed | 30,085 | $459K | 0.1% | 2026-Q1 |
| Foundry Partners, LLC added | 430,441 | $4M | 0.8% | 2025-Q1 stale |
| VANGUARD GROUP INC added | 394,753 | $4M | 0.8% | 2025-Q4 stale |
| Pacer Advisors, Inc. trimmed | 292,732 | $3M | 0.7% | 2025-Q3 stale |
| MOORE CAPITAL MANAGEMENT, LP new | 300,000 | $3M | 0.6% | 2025-Q4 stale |
| GLOBEFLEX CAPITAL L P | 188,213 | $2M | 0.4% | 2025-Q4 stale |
| WEDGE CAPITAL MANAGEMENT L L P/NC trimmed | 158,094 | $2M | 0.4% | 2025-Q3 stale |
| Lighthouse Investment Partners, LLC trimmed | 112,041 | $1M | 0.2% | 2025-Q4 stale |
| ZACKS INVESTMENT MANAGEMENT new | 109,010 | $1M | 0.2% | 2025-Q2 stale |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 73,185 | $869K | 0.2% | 2025-Q3 stale |
| PICTON MAHONEY ASSET MANAGEMENT new | 72,834 | $864K | 0.2% | 2025-Q3 stale |
| PRINCIPAL FINANCIAL GROUP INC added | 79,089 | $838K | 0.2% | 2025-Q4 stale |
| RAYMOND JAMES FINANCIAL INC added | 79,084 | $837K | 0.2% | 2025-Q4 stale |
| Diametric Capital, LP added | 56,042 | $593K | 0.1% | 2025-Q4 stale |
| CREDIT AGRICOLE S A | 53,800 | $570K | 0.1% | 2025-Q4 stale |
| Sanctuary Advisors, LLC trimmed | 47,843 | $468K | 0.1% | 2025-Q3 stale |
| Magnetar Financial LLC added | 48,583 | $466K | 0.1% | 2025-Q2 stale |
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.