Who owns Archrock (AROC)
Which tracked institutional funds hold AROC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See AROC 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
155 tracked funds added or opened AROC while 78 trimmed or exited it between 2026-Q1 and 2026-Q2 — 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
AROC’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 AROC more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in AROC 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 421 tracked filers holding AROC, 242 increased or opened the position and 211 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 AROC 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 28
- CONGRESS ASSET MANAGEMENT CO$90M
- Progeny 3, Inc.$42M
- LOOMIS SAYLES & CO L P$13M
- Select Equity Group, L.P.$8M
- Brookfield Corp /ON/$6M
- Bridgewater Associates, LP$6M
Full exits 51
- NATIXIS ADVISORS, LLC$63M
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$29M
- TUDOR INVESTMENT CORP ET AL$25M
- MARSHALL WACE, LLP$23M
- Trexquant Investment LP$14M
- Squarepoint Ops LLC$9M
Largest adds
- BlackRock, Inc.$365M
- VANGUARD PORTFOLIO MANAGEMENT LLC$70M
- NEUBERGER BERMAN GROUP LLC$69M
- GEODE CAPITAL MANAGEMENT, LLC$57M
- PRICE T ROWE ASSOCIATES INC /MD/$55M
- STATE STREET CORP$55M
Largest trims
- VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P.$46M
- D. E. Shaw & Co., Inc.$29M
- CITADEL ADVISORS LLC$23M
- WELLINGTON MANAGEMENT GROUP LLP$16M
- BARCLAYS PLC$16M
- VOLORIDGE INVESTMENT MANAGEMENT, LLC$14M
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 | 29,906,924 | $1.2B | 18.1% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 11,081,528 | $451M | 6.7% | 2026-Q2 |
| EARNEST PARTNERS LLC trimmed | 9,541,483 | $388M | 5.8% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 7,606,885 | $310M | 4.6% | 2026-Q2 |
| STATE STREET CORP added | 7,523,992 | $306M | 4.6% | 2026-Q2 |
| Invesco Ltd. trimmed | 7,203,285 | $293M | 4.4% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 6,437,484 | $262M | 3.9% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC added | 6,139,818 | $250M | 3.7% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 4,943,429 | $201M | 3.0% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 4,926,740 | $201M | 3.0% | 2026-Q2 |
| SEI INVESTMENTS CO added | 4,581,507 | $187M | 2.8% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC added | 3,740,255 | $152M | 2.3% | 2026-Q2 |
| FMR LLC trimmed | 3,603,575 | $147M | 2.2% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 2,691,330 | $110M | 1.6% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 2,682,046 | $109M | 1.6% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 2,520,589 | $103M | 1.5% | 2026-Q2 |
| CONGRESS ASSET MANAGEMENT CO new | 2,213,208 | $90M | 1.3% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 2,155,289 | $88M | 1.3% | 2026-Q2 |
| MORGAN STANLEY trimmed | 2,152,724 | $88M | 1.3% | 2026-Q2 |
| FRANKLIN RESOURCES INC added | 2,145,616 | $87M | 1.3% | 2026-Q2 |
| Bank of New York Mellon Corp added | 2,074,737 | $84M | 1.3% | 2026-Q2 |
| NORTHERN TRUST CORP added | 2,038,133 | $83M | 1.2% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 1,846,668 | $75M | 1.1% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 1,686,973 | $69M | 1.0% | 2026-Q2 |
| Energy Income Partners, LLC added | 1,437,233 | $59M | 0.9% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP added | 1,368,295 | $57M | 0.9% | 2026-Q2 |
| Stephens Investment Management Group LLC added | 1,332,301 | $54M | 0.8% | 2026-Q2 |
| Connor, Clark & Lunn Investment Management Ltd. added | 1,267,924 | $52M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 1,247,586 | $51M | 0.8% | 2026-Q2 |
| Clearbridge Investments, LLC trimmed | 1,209,465 | $49M | 0.7% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 1,189,135 | $48M | 0.7% | 2026-Q2 |
| Boston Partners added | 1,165,429 | $47M | 0.7% | 2026-Q2 |
| Progeny 3, Inc. new | 1,041,625 | $42M | 0.6% | 2026-Q2 |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. trimmed | 1,015,007 | $41M | 0.6% | 2026-Q2 |
| KAYNE ANDERSON CAPITAL ADVISORS LP trimmed | 964,888 | $39M | 0.6% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 856,707 | $35M | 0.5% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 852,169 | $35M | 0.5% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC added | 832,270 | $34M | 0.5% | 2026-Q2 |
| Nuveen, LLC trimmed | 671,992 | $27M | 0.4% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 657,328 | $27M | 0.4% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 638,767 | $26M | 0.4% | 2026-Q2 |
| Public Sector Pension Investment Board trimmed | 602,169 | $25M | 0.4% | 2026-Q2 |
| Focus Partners Wealth added | 588,284 | $24M | 0.4% | 2026-Q2 |
| FEDERATED HERMES, INC. added | 557,680 | $23M | 0.3% | 2026-Q2 |
| CITADEL ADVISORS LLC trimmed | 532,662 | $22M | 0.3% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 519,992 | $21M | 0.3% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 514,459 | $21M | 0.3% | 2026-Q2 |
| UBS Group AG trimmed | 495,743 | $20M | 0.3% | 2026-Q2 |
| FIDEURAM - INTESA SANPAOLO PRIVATE BANKING S.P.A. added | 495,555 | $20M | 0.3% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 491,928 | $20M | 0.3% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 490,090 | $20M | 0.3% | 2026-Q2 |
| EXCHANGE TRADED CONCEPTS, LLC added | 486,428 | $20M | 0.3% | 2026-Q2 |
| Legal & General Group Plc added | 441,992 | $18M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 429,241 | $17M | 0.3% | 2026-Q2 |
| AXIOM INVESTORS LLC /DE added | 412,054 | $17M | 0.2% | 2026-Q2 |
| CITIGROUP INC added | 370,731 | $15M | 0.2% | 2026-Q2 |
| ROYCE & ASSOCIATES LP added | 368,820 | $15M | 0.2% | 2026-Q2 |
| South Street Advisors LLC trimmed | 354,283 | $14M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 350,834 | $14M | 0.2% | 2026-Q2 |
| Swiss National Bank added | 334,000 | $14M | 0.2% | 2026-Q2 |
| LOOMIS SAYLES & CO L P new | 325,751 | $13M | 0.2% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 309,292 | $13M | 0.2% | 2026-Q2 |
| Waverly Advisors, LLC trimmed | 254,691 | $10M | 0.2% | 2026-Q2 |
| Allianz Asset Management GmbH added | 251,829 | $9M | 0.1% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 235,901 | $10M | 0.1% | 2026-Q2 |
| ALGERT GLOBAL LLC added | 225,040 | $9M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. added | 217,798 | $8M | 0.1% | 2026-Q2 |
| D. E. Shaw & Co., Inc. trimmed | 213,936 | $9M | 0.1% | 2026-Q2 |
| CROWN ADVISORS MANAGEMENT, INC. | 200,000 | $8M | 0.1% | 2026-Q2 |
| KING LUTHER CAPITAL MANAGEMENT CORP | 198,812 | $8M | 0.1% | 2026-Q2 |
| Edgestream Partners, L.P. added | 193,517 | $8M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 193,070 | $8M | 0.1% | 2026-Q2 |
| VAN ECK ASSOCIATES CORP added | 192,835 | $8M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 191,424 | $8M | 0.1% | 2026-Q2 |
| Sanctuary Advisors, LLC added | 189,975 | $8M | 0.1% | 2026-Q2 |
| Select Equity Group, L.P. new | 184,340 | $8M | 0.1% | 2026-Q2 |
| NORGES BANK trimmed | 182,401 | $7M | 0.1% | 2026-Q2 |
| PRUDENTIAL FINANCIAL INC added | 180,975 | $7M | 0.1% | 2026-Q2 |
| BARD ASSOCIATES INC trimmed | 180,128 | $7M | 0.1% | 2026-Q2 |
| VIKING FUND MANAGEMENT LLC trimmed | 180,000 | $7M | 0.1% | 2026-Q2 |
| Federation des caisses Desjardins du Quebec trimmed | 177,393 | $7M | 0.1% | 2026-Q2 |
| Bernzott Capital Advisors trimmed | 176,324 | $7M | 0.1% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 170,961 | $7M | 0.1% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 167,296 | $7M | 0.1% | 2026-Q2 |
| STIFEL FINANCIAL CORP added | 156,360 | $6M | 0.1% | 2026-Q2 |
| Brookfield Corp /ON/ new | 156,100 | $6M | 0.1% | 2026-Q2 |
| CAXTON ASSOCIATES LLP added | 147,931 | $6M | 0.1% | 2026-Q2 |
| Bridgewater Associates, LP added | 145,297 | $6M | 0.1% | 2026-Q2 |
| Moody Aldrich Partners LLC trimmed | 139,883 | $6M | 0.1% | 2026-Q2 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM added | 139,050 | $6M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 135,563 | $6M | 0.1% | 2026-Q2 |
| Jupiter Topco LLC new | 133,585 | $5M | 0.1% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC added | 131,403 | $5M | 0.1% | 2026-Q2 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 122,469 | $5M | 0.1% | 2026-Q2 |
| LPL Financial LLC added | 114,611 | $5M | 0.1% | 2026-Q2 |
| FIFTH THIRD BANCORP trimmed | 114,032 | $5M | 0.1% | 2026-Q2 |
| Creative Planning added | 110,422 | $4M | 0.1% | 2026-Q2 |
| EFG International AG trimmed | 106,308 | $4M | 0.1% | 2026-Q2 |
| Aquatic Capital Management LLC added | 103,136 | $4M | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC added | 101,731 | $4M | 0.1% | 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.