Accuray Incorporated
Accuray Incorporated (ARAY) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ARAY · as of Sep 30, 2025
Ownership Breakdown
128
Institutional Holders
▲ 1 vs Q2
$101.27M
Total Inst. Value
▲ $6.65M vs Q2
118.96M
Shares Outstanding
freeFloat 95.02%
71.91M
13F Shares Held
▼ 1.23M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ARAY largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
TCW GROUP INC surgical & medical instruments & apparatus | 11.91M | 11.16% | 11.16% | $1.05B | Nov 14, 2025 | — held |
BLACKROCK, INC. surgical & medical instruments & apparatus | 8.77M | 8.22% | 8.22% | $14.64B | Nov 12, 2025 | ▼ 274.3K |
VANGUARD GROUP INC surgical & medical instruments & apparatus | 5.48M | 5.13% | 5.13% | $9.15B | Nov 7, 2025 | ▲ 106.1K |
NEUBERGER BERMAN GROUP LLC surgical & medical instruments & apparatus | 5.28M | 4.95% | 4.95% | $8.81B | Nov 12, 2025 | ▲ 32.3K |
HEARTLAND ADVISORS INC surgical & medical instruments & apparatus | 5.00M | 4.68% | 4.68% | $8.34B | Nov 7, 2025 | ▼ 62.1K |
ARMISTICE CAPITAL, LLC surgical & medical instruments & apparatus | 3.32M | 3.12% | 3.12% | $5.55B | Nov 17, 2025 | ▲ 88.0K |
GEODE CAPITAL MANAGEMENT, LLC surgical & medical instruments & apparatus | 2.49M | 2.33% | 2.33% | $4.16B | Nov 12, 2025 | ▲ 68.7K |
RENAISSANCE TECHNOLOGIES LLC surgical & medical instruments & apparatus | 2.48M | 2.33% | 2.33% | $4.15B | Nov 13, 2025 | ▼ 120.1K |
ACUITAS INVESTMENTS, LLC surgical & medical instruments & apparatus | 2.39M | 2.24% | 2.24% | $3.99B | Nov 18, 2025 | ▲ 966.1K |
STATE STREET CORP surgical & medical instruments & apparatus | 1.99M | 1.87% | 1.87% | $3.33B | Nov 14, 2025 | ▲ 982 |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
25
Increased
+4.53M shares0
New Positions
first time holders20
Decreased
−3.53M shares0
Sold Out
fully exitedNet shares change (top 50)
+999.8K
+4.53M / −3.53M
Net new holders
+5
0 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ARAY insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
7
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Miele Paul Michael SVP, Chief Commercial Officer | May 29, 2026 | Award | 650,000 | — | — | 650.0K | Form 4 ↗ |
TCW GROUP INC 10 percent owner | May 19, 2026 | J-Other | 1,414,040 | $1.50 | $2.12M | 1.41M | Form 4 ↗ |
TCW GROUP INC 10 percent owner | May 19, 2026 | J-Other | 1,010,028 | $1.25 | $1.26M | 1.01M | Form 4 ↗ |
TCW GROUP INC 10 percent owner | May 19, 2026 | J-Other | 808,023 | $0.01 | $8.1K | 808.0K | Form 4 ↗ |
TCW GROUP INC 10 percent owner | May 19, 2026 | J-Other | 105,882 | $1.50 | $158.8K | 105.9K | Form 4 ↗ |
TCW GROUP INC 10 percent owner | May 19, 2026 | J-Other | 75,630 | $1.25 | $94.5K | 75.6K | Form 4 ↗ |
TCW GROUP INC 10 percent owner | May 19, 2026 | J-Other | 60,504 | $0.01 | $605.04 | 60.5K | Form 4 ↗ |
Chalke Sandeep SVP, Chief Commercial Officer | Mar 31, 2026 | Tax Withhold | 40,000 | $0.39 | $15.5K | 419.8K | Form 4 ↗ |
Peralta Leonel SVP, Chief Operations Officer | Feb 28, 2026 | Tax Withhold | 28,969 | $0.55 | $15.9K | 54.8K | Form 4 ↗ |
MAYER STEVEN F director | Feb 20, 2026 | Purchase | 54,875 | $0.56 | $30.9K | 1.55M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Accuray Incorporated (ARAY) is primarily owned by institutional investors, who hold approximately 60.5% of total shares outstanding. Company insiders own approximately 4.98%, while retail and public investors account for the remaining 34.57%.
The largest institutional shareholder of Accuray Incorporated is TCW GROUP INC, holding approximately 11.91 million shares — equal to 11.16% of outstanding shares — as of September 30, 2025.
A total of 128 institutional investors currently hold ARAY stock, with a combined institutional value of approximately $101,272,416 as of the most recent 13F filing period.
Frequently asked questions
ARAY ownershipAccuray Incorporated (ARAY) is primarily owned by institutional investors, who hold approximately 60.5% of shares. The largest shareholder is TCW GROUP INC with a 11.16% stake. Company insiders hold 4.98%. Data sourced from SEC Form 13F as of September 30, 2025.