Accuray Incorporated (ARAY) Ownership
ARAY ownership summary
as of October 18, 2026- Institutions
- 64.7% of shares outstanding
- Insiders
- 4.23% of shares outstanding
- Shares outstanding
- 119.4M
- Float
- 113.6M shares available to trade
- Short interest
- 7.09% 7.4M shares short
- Days to cover
- 0.40 short interest up 49.6% vs prior month
- Institutions 64.66%
- Insiders 4.23%
- Other investors 31.10%
ARAY top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | TCW Group Inc | 15.86% | 18.9M | $3.0M | +3.5M (+22.5%) | June 30, 2026 |
| 2 | Neuberger Berman Group LLC | 5.09% | 6.1M | $971,786 | +218,599 (+3.7%) | June 30, 2026 |
| 3 | Armistice Capital, LLC | 4.80% | 5.7M | $917,760 | +100,000 (+1.8%) | June 30, 2026 |
| 4 | Weber Capital Management LLC | 4.13% | 4.9M | $789,233 | −122,588 (−2.4%) | June 30, 2026 |
| 5 | Vanguard Capital Management, LLC | 3.72% | 4.4M | $710,048 | +7,408 (+0.2%) | June 30, 2026 |
| 6 | BlackRock Inc | 2.73% | 3.3M | $522,590 | −5.2M (−61.4%) | June 30, 2026 |
| 7 | AQR Capital Management LLC | 2.28% | 2.7M | $435,045 | +2.1M (+340.3%) | June 30, 2026 |
| 8 | Jane Street Group LLC | 1.79% | 2.1M | $342,355 | +2.1M (0.0%) | June 30, 2026 |
| 9 | Renaissance Technologies Corp | 1.73% | 2.1M | $330,445 | −225,700 (−9.9%) | June 30, 2026 |
| 10 | Dafna Capital Management LLC | 1.41% | 1.7M | $268,881 | — | June 30, 2026 |
| 11 | UBS Group AG | 1.36% | 1.6M | $259,834 | +222,199 (+15.9%) | June 30, 2026 |
| 12 | Millennium Management LLC | 1.33% | 1.6M | $254,263 | +1.6M (0.0%) | June 30, 2026 |
| 13 | Silverback Aset Management LLC | 1.21% | 1.4M | $232,000 | −200,000 (−12.1%) | June 30, 2026 |
| 14 | Squarepoint Ops LLC | 1.21% | 1.4M | $231,717 | +901,158 (+164.7%) | June 30, 2026 |
| 15 | FMR Inc | 1.15% | 1.4M | $220,119 | +86,958 (+6.7%) | June 30, 2026 |
| 16 | Geode Capital Management, LLC | 1.00% | 1.2M | $190,300 | −1.2M (−50.0%) | June 30, 2026 |
| 17 | Kovack Advisors Inc | 0.88% | 1.1M | $168,143 | +312,800 (+42.4%) | June 30, 2026 |
| 18 | Susquehanna International Group, LLP | 0.69% | 826K | $132,097 | +791,827 (+2,344.3%) | June 30, 2026 |
| 19 | The Goldman Sachs Group Inc | 0.67% | 803K | $128,473 | −58,678 (−6.8%) | June 30, 2026 |
| 20 | Vanguard Fiduciary Trust Co | 0.57% | 685K | $109,642 | −80,186 (−10.5%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 12 holders added 11.9M shares and 7 cut 7.1M.
ARAY top mutual fund and ETF holders
17 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.61% | 3.1M | $499,596 | — | August 31, 2026 |
| 2 | Fidelity Enhanced Small Cap Core ETF | 1.19% | 1.4M | $226,698 | +2,970 (+0.2%) | September 30, 2026 |
| 3 | Neuberger Intrinsic Value I | 1.18% | 1.4M | $224,876 | — | September 30, 2026 |
| 4 | BSF Systematic US Eq Abs Ret A2 USD | 0.59% | 700K | $112,050 | — | December 31, 2025 |
| 5 | Fidelity Extended Market Index | 0.58% | 689K | $110,182 | +66,680 (+10.7%) | August 31, 2026 |
| 6 | Neuberger US Sm Cp Intrs Val USD I Acc | 0.49% | 580K | $92,731 | +51,145 (+9.7%) | June 30, 2026 |
| 7 | North Star Micro Cap I | 0.39% | 467K | $74,720 | — | January 31, 2026 |
| 8 | Column Small Cap Select | 0.32% | 382K | $61,101 | — | September 30, 2026 |
| 9 | Goldman Sachs Absolute Ret Trckr Instl | 0.15% | 182K | $29,109 | +147,499 (+428.4%) | June 30, 2026 |
| 10 | Fidelity Total Market Index | 0.15% | 181K | $29,005 | — | August 31, 2026 |
| 11 | Fidelity VIP Disciplined Small Cap Init | 0.15% | 178K | $28,536 | — | July 31, 2026 |
| 12 | Fidelity Series Total Market Index | 0.13% | 158K | $25,265 | — | August 31, 2026 |
| 13 | Morgan Stanley Pathway Sm-Md Cp Eq ETF | 0.10% | 124K | $19,792 | — | September 30, 2026 |
| 14 | Invesco RAFI US 1500 Small-Mid ETF | 0.10% | 118K | $18,921 | — | September 30, 2026 |
| 15 | Vanguard Balanced Index Inv | 0.06% | 73K | $11,720 | — | August 31, 2026 |
| 16 | Column Small Cap | 0.05% | 57K | $9,111 | — | September 30, 2026 |
| 17 | Gabelli Global Mini Mites I | 0.04% | 44K | $7,008 | — | June 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ARAY insider transactions
latest 1| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-11-19 | Neve Stephen R La | Buy | $0.97 | 20,000 | $19,400 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
ARAY shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ARAY
Institutional investors own 64.7% of Accuray's shares and insiders 4.23%. The largest holder is TCW Group Inc with 15.86% of the shares (18.9M), as of June 30, 2026. Among the top 20 institutions, 12 added shares and 7 reduced their stake in the latest filings. Short interest is 7.09% of the float, or 0.40 days of average trading volume. The share count rose 54.0% since 2014.
Related: ARAY analyst forecast, ARAY key metrics. See the ARAY stock overview for the latest quote and news.
ARAY ownership FAQ
Who owns the most Accuray stock?
The largest shareholders of Accuray are TCW Group Inc (15.86%), Neuberger Berman Group LLC (5.09%), Armistice Capital, LLC (4.80%), Weber Capital Management LLC (4.13%), Vanguard Capital Management, LLC (3.72%).
What percentage of Accuray is owned by institutions?
Institutions hold 64.7% of Accuray's shares outstanding; insiders hold 4.23%.
Which funds own Accuray?
The largest fund holders of Accuray are Vanguard MStar Total Stk Mkt Idx Invest (2.61%), Fidelity Enhanced Small Cap Core ETF (1.19%), Neuberger Intrinsic Value I (1.18%), BSF Systematic US Eq Abs Ret A2 USD (0.59%), Fidelity Extended Market Index (0.58%).
What is Accuray's short interest?
7.4M shares of Accuray were sold short, 7.09% of the float; at the average daily volume it would take 0.40 days to cover.
Are insiders buying or selling Accuray?
Of the latest 1 reported insider transactions in Accuray (since November 19, 2025), 1 were purchases and 0 were sales.
How many shares of Accuray are outstanding?
Accuray has 119.4M shares outstanding, of which 113.6M are in the public float.