Who owns ACA (ACA)
Which tracked institutional funds hold ACA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ACA 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
66 tracked funds added or opened ACA while 66 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
ACA’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 ACA more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in ACA 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 372 tracked filers holding ACA, 176 increased or opened the position and 162 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 ACA 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 22
- VANGUARD PORTFOLIO MANAGEMENT LLC$303M
- VANGUARD CAPITAL MANAGEMENT LLC$233M
- Ananym Capital Management, LP$35M
- VANGUARD FIDUCIARY TRUST CO$34M
- Ceredex Value Advisors LLC$10M
- VANGUARD ASSET MANAGEMENT, Ltd$5M
Full exits 15
- VANGUARD GROUP INC$561M
- Verition Fund Management LLC$22M
- Point72 Asset Management, L.P.$4M
- DYMON ASIA CAPITAL (SINGAPORE) PTE. LTD.$3M
- Mercuria Capital Strategies, LLC$2M
- TUDOR INVESTMENT CORP ET AL$2M
Largest adds
- T. Rowe Price Investment Management, Inc.$188M
- Capital World Investors$31M
- AMERIPRISE FINANCIAL INC$23M
- PRICE T ROWE ASSOCIATES INC /MD/$16M
- FIRST TRUST ADVISORS LP$13M
- Qube Research & Technologies Ltd$10M
Largest trims
- BlackRock, Inc.$68M
- Capital International Investors$31M
- NORGES BANK$23M
- PRUDENTIAL FINANCIAL INC$17M
- FRANKLIN RESOURCES INC$12M
- CITADEL ADVISORS LLC$11M
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. trimmed | 6,551,221 | $695M | 13.1% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 2,857,823 | $303M | 5.7% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC added | 2,673,845 | $284M | 5.3% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 2,316,687 | $246M | 4.6% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 2,198,324 | $233M | 4.4% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 2,078,844 | $221M | 4.2% | 2026-Q1 |
| STATE STREET CORP added | 1,980,645 | $210M | 4.0% | 2026-Q1 |
| Capital World Investors added | 1,970,776 | $209M | 3.9% | 2026-Q1 |
| Capital International Investors trimmed | 1,952,826 | $207M | 3.9% | 2026-Q1 |
| ROYCE & ASSOCIATES LP added | 1,252,310 | $133M | 2.5% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,209,907 | $128M | 2.4% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. added | 1,070,073 | $114M | 2.1% | 2026-Q1 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 1,004,663 | $107M | 2.0% | 2026-Q1 |
| LOOMIS SAYLES & CO L P trimmed | 793,076 | $84M | 1.6% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 625,708 | $66M | 1.3% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 625,606 | $66M | 1.3% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 530,455 | $56M | 1.1% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 522,228 | $55M | 1.0% | 2026-Q1 |
| MORGAN STANLEY trimmed | 479,177 | $51M | 1.0% | 2026-Q1 |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. added | 436,330 | $46M | 0.9% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 435,101 | $46M | 0.9% | 2026-Q1 |
| NORGES BANK trimmed | 582,101 | $45M | 0.8% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 383,265 | $41M | 0.8% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 369,232 | $39M | 0.7% | 2026-Q1 |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. added | 362,326 | $38M | 0.7% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 342,476 | $36M | 0.7% | 2026-Q1 |
| Ananym Capital Management, LP new | 333,002 | $35M | 0.7% | 2026-Q1 |
| Nuveen, LLC trimmed | 326,440 | $35M | 0.7% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 324,426 | $34M | 0.6% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 308,929 | $33M | 0.6% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 282,398 | $30M | 0.6% | 2026-Q1 |
| OBERWEIS ASSET MANAGEMENT INC/ added | 267,700 | $28M | 0.5% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 266,113 | $28M | 0.5% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 260,530 | $28M | 0.5% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 214,836 | $23M | 0.4% | 2026-Q1 |
| FMR LLC trimmed | 205,627 | $22M | 0.4% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 213,241 | $22M | 0.4% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC trimmed | 189,392 | $20M | 0.4% | 2026-Q1 |
| TCTC Holdings, LLC trimmed | 182,557 | $19M | 0.4% | 2026-Q1 |
| GAMCO INVESTORS, INC. ET AL trimmed | 179,271 | $19M | 0.4% | 2026-Q1 |
| Public Sector Pension Investment Board added | 175,463 | $19M | 0.4% | 2026-Q1 |
| Impax Asset Management Group plc added | 171,500 | $18M | 0.3% | 2026-Q1 |
| GLENMEDE TRUST CO NA trimmed | 151,463 | $16M | 0.3% | 2026-Q1 |
| Select Equity Group, L.P. added | 146,381 | $16M | 0.3% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 146,195 | $16M | 0.3% | 2026-Q1 |
| GABELLI FUNDS LLC added | 144,984 | $15M | 0.3% | 2026-Q1 |
| Aptus Capital Advisors, LLC added | 132,430 | $14M | 0.3% | 2026-Q1 |
| Thrivent Financial for Lutherans added | 127,321 | $14M | 0.3% | 2026-Q1 |
| First Eagle Investment Management, LLC added | 126,636 | $13M | 0.3% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 125,095 | $13M | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 115,404 | $12M | 0.2% | 2026-Q1 |
| PEREGRINE CAPITAL MANAGEMENT LLC trimmed | 110,240 | $12M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 109,988 | $12M | 0.2% | 2026-Q1 |
| Fisher Asset Management, LLC trimmed | 104,924 | $11M | 0.2% | 2026-Q1 |
| Ceredex Value Advisors LLC new | 98,475 | $10M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 97,000 | $10M | 0.2% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 90,206 | $9M | 0.2% | 2026-Q1 |
| UBS Group AG added | 86,453 | $9M | 0.2% | 2026-Q1 |
| Ancora Advisors LLC trimmed | 85,105 | $9M | 0.2% | 2026-Q1 |
| HighTower Advisors, LLC added | 83,509 | $9M | 0.2% | 2026-Q1 |
| LORD, ABBETT & CO. LLC trimmed | 83,251 | $9M | 0.2% | 2026-Q1 |
| THORNBURG INVESTMENT MANAGEMENT INC trimmed | 79,739 | $8M | 0.2% | 2026-Q1 |
| Invesco Ltd. trimmed | 77,390 | $8M | 0.2% | 2026-Q1 |
| CASTLEARK MANAGEMENT LLC added | 74,650 | $8M | 0.1% | 2026-Q1 |
| AYAL Capital Advisors Ltd added | 73,400 | $8M | 0.1% | 2026-Q1 |
| VAN ECK ASSOCIATES CORP added | 72,118 | $8M | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 71,362 | $8M | 0.1% | 2026-Q1 |
| STRS OHIO trimmed | 69,000 | $7M | 0.1% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH added | 68,588 | $7M | 0.1% | 2026-Q1 |
| TCW GROUP INC trimmed | 63,952 | $7M | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO added | 59,845 | $6M | 0.1% | 2026-Q1 |
| NATIXIS ADVISORS, LLC added | 56,433 | $6M | 0.1% | 2026-Q1 |
| Advisors Asset Management, Inc. added | 55,928 | $6M | 0.1% | 2026-Q1 |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC trimmed | 55,854 | $6M | 0.1% | 2026-Q1 |
| Creative Planning added | 54,339 | $6M | 0.1% | 2026-Q1 |
| Consolidated Investment Group LLC added | 54,245 | $6M | 0.1% | 2026-Q1 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM trimmed | 53,746 | $6M | 0.1% | 2026-Q1 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added | 53,192 | $6M | 0.1% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 52,183 | $6M | 0.1% | 2026-Q1 |
| HARBOR CAPITAL ADVISORS, INC. trimmed | 45,989 | $5M | 0.1% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC added | 45,947 | $5M | 0.1% | 2026-Q1 |
| MARATHON CAPITAL MANAGEMENT trimmed | 45,290 | $5M | 0.1% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 44,772 | $5M | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC added | 43,921 | $5M | 0.1% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 43,875 | $5M | 0.1% | 2026-Q1 |
| TD Asset Management Inc added | 42,228 | $4M | 0.1% | 2026-Q1 |
| CANADA LIFE ASSURANCE Co trimmed | 41,620 | $4M | 0.1% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 41,291 | $4M | 0.1% | 2026-Q1 |
| BESSEMER GROUP INC added | 40,895 | $4M | 0.1% | 2026-Q1 |
| Grantham, Mayo, Van Otterloo & Co. LLC trimmed | 38,870 | $4M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 5,273,421 | $561M | 10.6% | 2025-Q4 stale |
| MACQUARIE GROUP LTD trimmed | 1,083,769 | $102M | 1.9% | 2025-Q3 stale |
| Verition Fund Management LLC trimmed | 207,057 | $22M | 0.4% | 2025-Q4 stale |
| Glenmede Investment Management, LP trimmed | 179,666 | $17M | 0.3% | 2025-Q3 stale |
| JANE STREET GROUP, LLC trimmed | 94,111 | $9M | 0.2% | 2025-Q3 stale |
| Cubist Systematic Strategies, LLC added | 65,647 | $6M | 0.1% | 2025-Q3 stale |
| River Road Asset Management, LLC trimmed | 66,639 | $6M | 0.1% | 2025-Q2 stale |
| MUFG Securities EMEA plc trimmed | 53,100 | $5M | 0.1% | 2025-Q3 stale |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 44,100 | $4M | 0.1% | 2025-Q3 stale |
| Point72 Asset Management, L.P. added | 38,635 | $4M | 0.1% | 2025-Q4 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.