Who owns ARAY (ARAY)
Which tracked institutional funds hold ARAY, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ARAY 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 ARAY is one-sided between 2025-Q4 and 2026-Q1: 1 added or opened and 25 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
ARAY’s largest tracked holder by dollar value, VANGUARD GROUP 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 ARAY more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in ARAY 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 125 tracked filers holding ARAY, 70 increased or opened the position and 60 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
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 ARAY 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 1
- VANGUARD CAPITAL MANAGEMENT LLC$2M
Full exits 2
- VANGUARD GROUP INC$5M
- CITADEL ADVISORS LLC$736K
Largest trims
- TCW GROUP INC$5M
- BlackRock, Inc.$4M
- WEBER CAPITAL MANAGEMENT LLC /ADV$2M
- HEARTLAND ADVISORS INC$2M
- NEUBERGER BERMAN GROUP LLC$2M
- ARMISTICE CAPITAL, LLC$2M
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 |
|---|---|---|---|---|
| TCW GROUP INC | 15,467,952 | $4M | 8.9% | 2026-Q1 |
| BlackRock, Inc. trimmed | 8,458,409 | $3M | 7.1% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC added | 5,855,064 | $2M | 4.9% | 2026-Q1 |
| ARMISTICE CAPITAL, LLC added | 5,636,000 | $2M | 4.7% | 2026-Q1 |
| WEBER CAPITAL MANAGEMENT LLC /ADV | 5,055,294 | $2M | 4.3% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 4,430,392 | $2M | 3.7% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 2,380,839 | $924K | 2.0% | 2026-Q1 |
| MACKENZIE FINANCIAL CORP added | 2,346,360 | $911K | 2.0% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 2,290,984 | $889K | 1.9% | 2026-Q1 |
| STATE STREET CORP added | 2,017,653 | $783K | 1.7% | 2026-Q1 |
| HEARTLAND ADVISORS INC trimmed | 1,977,450 | $767K | 1.7% | 2026-Q1 |
| DAFNA Capital Management LLC added | 1,680,508 | $652K | 1.4% | 2026-Q1 |
| SILVERBACK ASSET MANAGEMENT LLC added | 1,650,000 | $640K | 1.4% | 2026-Q1 |
| UBS Group AG added | 1,401,766 | $544K | 1.2% | 2026-Q1 |
| FMR LLC added | 1,288,788 | $500K | 1.1% | 2026-Q1 |
| Parkman Healthcare Partners LLC added | 884,578 | $343K | 0.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 861,635 | $334K | 0.7% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 843,646 | $327K | 0.7% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 765,448 | $297K | 0.6% | 2026-Q1 |
| Kovack Advisors, Inc. trimmed | 738,096 | $287K | 0.6% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 717,045 | $278K | 0.6% | 2026-Q1 |
| Silverberg Bernstein Capital Management LLC added | 655,681 | $254K | 0.6% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 617,477 | $240K | 0.5% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 595,229 | $231K | 0.5% | 2026-Q1 |
| Squarepoint Ops LLC added | 547,076 | $212K | 0.5% | 2026-Q1 |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 500,000 | $194K | 0.4% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 394,270 | $152K | 0.3% | 2026-Q1 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 334,023 | $130K | 0.3% | 2026-Q1 |
| Invesco Ltd. added | 328,175 | $127K | 0.3% | 2026-Q1 |
| Nuveen, LLC added | 295,412 | $115K | 0.2% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 294,903 | $114K | 0.2% | 2026-Q1 |
| MORGAN STANLEY trimmed | 288,813 | $112K | 0.2% | 2026-Q1 |
| EverSource Wealth Advisors, LLC added | 1,099 | $102K | 0.2% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 245,107 | $96K | 0.2% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 239,163 | $93K | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp | 219,959 | $85K | 0.2% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL | 211,597 | $82K | 0.2% | 2026-Q1 |
| Assenagon Asset Management S.A. trimmed | 204,015 | $79K | 0.2% | 2026-Q1 |
| BARCLAYS PLC trimmed | 184,610 | $72K | 0.2% | 2026-Q1 |
| Williams & Novak, LLC added | 182,030 | $71K | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 172,109 | $67K | 0.1% | 2026-Q1 |
| North Star Investment Management Corp. trimmed | 164,620 | $64K | 0.1% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 162,505 | $63K | 0.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 147,547 | $57K | 0.1% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC trimmed | 132,292 | $51K | 0.1% | 2026-Q1 |
| GSA CAPITAL PARTNERS LLP added | 128,065 | $50K | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. | 54,730 | $45K | 0.1% | 2026-Q1 |
| HSBC HOLDINGS PLC | 111,442 | $41K | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO added | 88,948 | $35K | 0.1% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 79,843 | $27K | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 69,376 | $27K | 0.1% | 2026-Q1 |
| MARSHALL WACE, LLP added | 68,751 | $27K | 0.1% | 2026-Q1 |
| FRANKLIN RESOURCES INC added | 65,681 | $25K | 0.1% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC trimmed | 55,648 | $22K | 0.0% | 2026-Q1 |
| PERKINS CAPITAL MANAGEMENT INC trimmed | 52,500 | $20K | 0.0% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 50,833 | $20K | 0.0% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 50,775 | $20K | 0.0% | 2026-Q1 |
| Mariner, LLC added | 49,226 | $19K | 0.0% | 2026-Q1 |
| Janney Montgomery Scott LLC | 50,032 | $19K | 0.0% | 2026-Q1 |
| VANGUARD GROUP INC added | 5,818,576 | $5M | 10.4% | 2025-Q4 stale |
| Acuitas Investments, LLC added | 2,392,126 | $4M | 8.7% | 2025-Q3 stale |
| Foundry Partners, LLC trimmed | 1,795,645 | $3M | 7.0% | 2025-Q1 stale |
| HARBERT FUND ADVISORS, INC. trimmed | 1,448,820 | $2M | 4.3% | 2025-Q2 stale |
| CITADEL ADVISORS LLC added | 892,328 | $736K | 1.6% | 2025-Q4 stale |
| CSM Advisors, LLC new | 386,350 | $527K | 1.1% | 2025-Q2 stale |
| Connor, Clark & Lunn Investment Management Ltd. added | 602,114 | $497K | 1.1% | 2025-Q4 stale |
| Archon Capital Management LLC trimmed | 297,560 | $408K | 0.9% | 2025-Q2 stale |
| JANE STREET GROUP, LLC added | 328,043 | $271K | 0.6% | 2025-Q4 stale |
| Bridge City Capital, LLC | 133,156 | $222K | 0.5% | 2025-Q3 stale |
| Perritt Capital Management Inc | 95,000 | $170K | 0.4% | 2025-Q1 stale |
| MARATHON CAPITAL MANAGEMENT | 100,000 | $167K | 0.4% | 2025-Q3 stale |
| KENNEDY CAPITAL MANAGEMENT LLC trimmed | 91,696 | $164K | 0.4% | 2025-Q1 stale |
| AMERIPRISE FINANCIAL INC added | 183,537 | $151K | 0.3% | 2025-Q4 stale |
| Virtu Financial LLC added | 166,673 | $137K | 0.3% | 2025-Q4 stale |
| LOS ANGELES CAPITAL MANAGEMENT LLC trimmed | 87,775 | $121K | 0.3% | 2025-Q4 stale |
| State of Wyoming trimmed | 67,505 | $121K | 0.3% | 2025-Q1 stale |
| TWO SIGMA ADVISERS, LP added | 139,413 | $115K | 0.2% | 2025-Q4 stale |
| Walleye Capital LLC trimmed | 56,421 | $101K | 0.2% | 2025-Q1 stale |
| Cubist Systematic Strategies, LLC added | 53,571 | $89K | 0.2% | 2025-Q3 stale |
| Massar Capital Management, LP new | 48,469 | $87K | 0.2% | 2025-Q1 stale |
| Corebridge Financial, Inc. trimmed | 47,504 | $85K | 0.2% | 2025-Q1 stale |
| ALGERT GLOBAL LLC | 60,930 | $83K | 0.2% | 2025-Q2 stale |
| MetLife Investment Management, LLC added | 40,242 | $67K | 0.1% | 2025-Q3 stale |
| Teton Advisors, Inc. | 43,500 | $60K | 0.1% | 2025-Q2 stale |
| CANADA PENSION PLAN INVESTMENT BOARD added | 61,100 | $50K | 0.1% | 2025-Q4 stale |
| Centiva Capital, LP new | 60,695 | $50K | 0.1% | 2025-Q4 stale |
| PRIMECAP MANAGEMENT CO/CA/ trimmed | 33,700 | $46K | 0.1% | 2025-Q2 stale |
| OXFORD ASSET MANAGEMENT LLP new | 53,526 | $44K | 0.1% | 2025-Q4 stale |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | 26,620 | $36K | 0.1% | 2025-Q2 stale |
| XTX Topco Ltd trimmed | 37,285 | $31K | 0.1% | 2025-Q4 stale |
| WOLVERINE TRADING, LLC added | 16,009 | $26K | 0.1% | 2025-Q3 stale |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | 16,190 | $22K | 0.0% | 2025-Q2 stale |
| NINE MASTS CAPITAL Ltd new | 25,202 | $21K | 0.0% | 2025-Q4 stale |
| GLOBEFLEX CAPITAL L P trimmed | 25,045 | $21K | 0.0% | 2025-Q4 stale |
| US BANCORP \DE\ trimmed | 14,984 | $21K | 0.0% | 2025-Q2 stale |
| Voleon Capital Management LP new | 11,952 | $20K | 0.0% | 2025-Q3 stale |
| Lane & Associates LLC trimmed | 11,005 | $20K | 0.0% | 2025-Q1 stale |
| Graham Capital Management, L.P. trimmed | 23,748 | $20K | 0.0% | 2025-Q4 stale |
| WINTON GROUP Ltd trimmed | 14,055 | $19K | 0.0% | 2025-Q2 stale |
| SG Americas Securities, LLC trimmed | 23,103 | $19K | 0.0% | 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.