Institutional ownership · Form 13F
ARAY institutional ownership
Accuray Incorporated - Common Stock: reported institutional holdings as of 2026-06-30 (filed through 2026-08-31), aggregated by StockEyes from SEC Form 13F information tables. ARAY is one of 2732 tickers in the validated publication set. Mapping coverage in this publication set: 4562 of 6046 universe tickers have at least one validated CUSIP mapping (75.5%). Latest-quarter filed value resolved to any listed ticker: 77.3%; resolved to this universe: 77.2%.
ARAY: change since the prior quarter's filings
Fewer managers reported a position, with the count falling from 125 in the quarter ended 2026-03-31 to 111 in the quarter ended 2026-06-30 (-14, 11.2%). Total reported shares fell to 71,580,435 (-4,067,763, 5.4%), moving the same way as the manager count. Among the 21 managers listed as top holders in both quarters, the largest increases were TCW GROUP INC (+3,474,107 shares) and AQR CAPITAL MANAGEMENT LLC (+2,101,555 shares), among 10 managers who added shares, and the largest decreases were BlackRock, Inc. (-5,192,224 shares) and STATE STREET CORP (-1,531,787 shares), among 9 managers who reduced shares. JANE STREET GROUP, LLC (2,139,720 shares), MILLENNIUM MANAGEMENT LLC (1,589,145 shares) and 7 more entered the listed top holders; MACKENZIE FINANCIAL CORP (2,346,360 shares in the prior quarter), HEARTLAND ADVISORS INC (1,977,450 shares in the prior quarter) and 7 more dropped out of the listed top holders.
New to 13F data? Read how to read a 13F filing, or see where institutions moved overall in the Smart Money Report.
Reported totals, quarter ended 2026-06-30
111 reporting managers held 71,580,435 shares, reported value $17,612,629 exactly as filed. Values are position values transcribed from the filings, not current market prices.
Reported quarter-over-quarter change (quarter ended 2026-03-31 to quarter ended 2026-06-30): reporting managers -14, reported shares -4,067,763 (-5.38%), reported value -35.19%. These changes compare two filing snapshots.
Shares outstanding cross-check: no current issuer share-count point passed the freshness filter for this ticker, so the gate relied on holder-count and scale checks. See the hub methodology.
ARAY in this quarter's filings
Concentration check: the largest reported position, TCW GROUP INC with 18,942,059 shares, is 26.5% of all shares reported for ARAY this quarter. The five largest reporting managers together account for 56.1% of the reported total, so the headline total is dominated by a handful of large managers.
Reported quarter-over-quarter change: the reporting-manager count fell by 14 versus the quarter ended 2026-03-31, and reported shares moved -5.38% (-4,067,763 shares). That is a comparison of two filing snapshots, not a record of trades on any single day.
Shares-outstanding cross-check: no current issuer share-count point passed the freshness filter for ARAY, so the publication gate relied on holder-count scale, current-CUSIP validation, and quarter consistency for this ticker.
Largest reporting managers, ARAY
| # | Manager | Shares | Value as filed | Share of reported total |
|---|---|---|---|---|
| 1 | TCW GROUP INC | 18,942,059 | $4,077,470 | 26.5% |
| 2 | NEUBERGER BERMAN GROUP LLC | 6,073,663 | $1,568,289 | 8.5% |
| 3 | ARMISTICE CAPITAL, LLC | 5,736,000 | $1,478,741 | 8.0% |
| 4 | WEBER CAPITAL MANAGEMENT LLC /ADV | 4,932,706 | $1,271,652 | 6.9% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 4,437,800 | $1,144,952 | 6.2% |
| 6 | BlackRock, Inc. | 3,266,185 | $842,023 | 4.6% |
| 7 | AQR CAPITAL MANAGEMENT LLC | 2,719,032 | $700,967 | 3.8% |
| 8 | JANE STREET GROUP, LLC | 2,139,720 | $551,620 | 3.0% |
| 9 | RENAISSANCE TECHNOLOGIES LLC | 2,065,284 | $532,430 | 2.9% |
| 10 | DAFNA Capital Management LLC | 1,680,508 | $433,235 | 2.3% |
| 11 | UBS Group AG | 1,623,965 | $418,983 | 2.3% |
| 12 | MILLENNIUM MANAGEMENT LLC | 1,589,145 | $409,682 | 2.2% |
| 13 | SILVERBACK ASSET MANAGEMENT LLC | 1,450,000 | $373,810 | 2.0% |
| 14 | Squarepoint Ops LLC | 1,448,234 | $373,355 | 2.0% |
| 15 | FMR LLC | 1,375,746 | $354,667 | 1.9% |
Manager names and figures are transcribed from each manager's own Form 13F information table. A manager listing shares in this snapshot does not mean it holds them today.
Reported change, 2026-03-31 to 2026-06-30
| Quarter ended | Filed through | Reporting managers | Reported shares | Value as filed |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-29 | 125 | 75,648,198 | $27,177,844 |
| 2026-06-30 | 2026-08-31 | 111 | 71,580,435 | $17,612,629 |
Every change figure on this page is a reported quarter-over-quarter change between filing snapshots. It is not real-time trading activity.
ARAY reported totals over time
Quarter ended 2026-06-30: 111 reporting managers · 71,580,435 reported shares · $17,612,629 value as filed.
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Quarter-end 13F filed data, long positions only; filings arrive up to 45 days after quarter end.
CUSIPs behind the ARAY total
The validated bridge mapped 1 current CUSIP(s) to ARAY for this quarter: 004397105. Option pseudo-CUSIPs, units, warrants, and preferred classes are excluded from these common-share totals. Mapping coverage in this publication set: 4562 of 6046 universe tickers have at least one validated CUSIP mapping (75.5%). Latest-quarter filed value resolved to any listed ticker: 77.3%; resolved to this universe: 77.2%.
What this page is and is not
Form 13F reports are quarterly holdings snapshots. Managers file up to about 45 days after quarter-end, so these figures describe reported positions as of the quarter-end date, not holdings today. 13F lists reportable long positions from managers above the SEC reporting threshold and omits short positions entirely.
This page is informational only. It is not investment advice, a recommendation, or a signal to buy or sell. Source: SEC Form 13F bulk data set for filings through 2026-08-31 (period ended 2026-06-30), joined to tickers through StockEyes' validated CUSIP bridge. Methodology and coverage are documented on the institutional ownership hub.
Insider transactions for ARAY (officer and director buys and sells) are covered by InsiderTrace: insidertrace.com/stock/aray. StockEyes does not duplicate insider transaction tables.
Related StockEyes pages
Latest headlines tagged ARAY are on the market news wire. Upcoming earnings and market dates are on the events calendar. The term itself is defined in the institutional investor glossary entry, and the research workflow behind pages like this one is walked through in how to research a stock and how to compare SEC filings.