ACCURAY INC (ARAY) Top Institutional Shareholders
ACCURAY INC (ARAY) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $23.17M in ARAY holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of ARAY tracked by InsiderSet, reporting ownership valued at approximately $3.28M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $2.90M, representing an estimated loss of -11.72% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 68% of the total disclosed ARAY value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Neuberger Berman Group Llc, Armistice Capital, Llc, and several other long-term asset managers with concentrated positions in ACCURAY INC (ARAY).
This page ranks the largest institutional ARAY shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
121
Total Reported Value
$23.17M
Largest Holder
Blackrock, Inc.
Largest Position
$3.28M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
151
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 8,458,409 | $3,282,706 | $2,897,851 | -$384,855 | -11.72% | |
| Neuberger Berman Group Llc | 0.00% | 5,855,064 | $2,253,763 | $2,005,945 | -$247,818 | -11.00% | |
| Armistice Capital, Llc | 0.07% | 5,636,000 | $2,187,332 | $1,930,894 | -$256,438 | -11.72% | |
| Weber Capital Management Llc | 1.96% | 5,055,294 | $1,961,960 | $1,731,944 | -$230,016 | -11.72% | |
| Vanguard Capital Management Llc | 0.00% | 4,430,392 | $1,718,992 | $1,517,852 | -$201,140 | -11.70% | |
| Geode Capital Management, Llc | 0.00% | 2,380,839 | $924,159 | $815,675 | -$108,484 | -11.74% | |
| Mackenzie Financial Corp | 0.00% | 2,346,360 | $910,622 | $803,863 | -$106,759 | -11.72% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 2,290,984 | $889,131 | $784,891 | -$104,240 | -11.72% |
| State Street Corp | 0.00% | 2,017,653 | $783,051 | $691,248 | -$91,803 | -11.72% | |
| Heartland Advisors Inc | 0.04% | 1,977,450 | $767,448 | $677,474 | -$89,974 | -11.72% | |
| Dafna Capital Management Llc | 0.15% | 1,680,508 | $652,205 | $575,742 | -$76,463 | -11.72% | |
| Silverback Asset Management Llc | 0.13% | 1,650,000 | $640,365 | $565,290 | -$75,075 | -11.72% | |
| Ubs Group Ag | 0.00% | 1,401,766 | $543,886 | $480,245 | -$63,641 | -11.70% | |
| Fmr Llc | 0.00% | 1,288,788 | $500,179 | $441,539 | -$58,640 | -11.72% | |
| Parkman Healthcare Partners Llc | 0.04% | 884,578 | $343,305 | $303,056 | -$40,249 | -11.72% | |
| Goldman Sachs Group Inc | 0.00% | 861,635 | $334,400 | $295,196 | -$39,204 | -11.72% | |
| D. E. Shaw & Co., Inc. | 0.00% | 843,646 | $327,419 | $289,033 | -$38,386 | -11.72% | |
| Vanguard Fiduciary Trust Co | 0.00% | 765,448 | $296,994 | $262,242 | -$34,752 | -11.70% | |
| Kovack Advisors, Inc. | 0.02% | 738,096 | $286,972 | $252,872 | -$34,100 | -11.88% | |
| Northern Trust Corp | 0.00% | 717,045 | $278,286 | $245,660 | -$32,626 | -11.72% | |
| Silverberg Bernstein Capital Management Llc | 0.14% | 655,681 | $254,470 | $224,636 | -$29,834 | -11.72% | |
| Aqr Capital Management Llc | 0.00% | 617,477 | $239,643 | $211,548 | -$28,095 | -11.72% | |
| Vanguard Portfolio Management Llc | 0.00% | 595,229 | $230,949 | $203,925 | -$27,024 | -11.70% | |
| Squarepoint Ops Llc | 0.00% | 547,076 | $212,320 | $187,428 | -$24,892 | -11.72% | |
| Tenor Capital Management Co., L.P. | 0.00% | 500,000 | $194,050 | $171,300 | -$22,750 | -11.72% | |
| Mitsubishi Ufj Asset Management Co., Ltd. | 0.00% | 334,023 | $129,634 | $114,436 | -$15,198 | -11.72% | |
| Invesco Ltd. | 0.00% | 328,175 | $127,364 | $112,433 | -$14,931 | -11.72% | |
| Nuveen, Llc | 0.00% | 295,412 | $114,649 | $101,208 | -$13,441 | -11.72% | |
| Dimensional Fund Advisors Lp | 0.00% | 294,903 | $114,155 | $101,034 | -$13,121 | -11.49% | |
| Morgan Stanley | 0.00% | 288,813 | $112,087 | $98,947 | -$13,140 | -11.72% | |
| Eversource Wealth Advisors, Llc | 0.00% | 1,099 | $102,499 | $377 | -$102,122 | -99.63% | |
| Deutsche Bank Ag\ | 0.00% | 245,107 | $95,592 | $83,974 | -$11,618 | -12.15% | |
| Charles Schwab Investment Management Inc | 0.00% | 239,163 | $92,819 | $81,937 | -$10,882 | -11.72% | |
| Bank Of New York Mellon Corp | 0.00% | 219,959 | $85,366 | $75,358 | -$10,008 | -11.72% | |
| Tudor Investment Corp Et Al | 0.00% | 211,597 | $82,121 | $72,493 | -$9,628 | -11.72% | |
| Assenagon Asset Management S.A. | 0.00% | 204,015 | $79,178 | $69,896 | -$9,282 | -11.72% | |
| Barclays Plc | 0.00% | 184,610 | $71,647 | $63,247 | -$8,400 | -11.72% | |
| Williams & Novak, Llc | 0.05% | 182,030 | $70,773 | $62,363 | -$8,410 | -11.88% | |
| Bank Of America Corp | 0.00% | 172,109 | $66,779 | $58,965 | -$7,814 | -11.70% | |
| North Star Investment Management Corp. | 0.00% | 164,620 | $63,889 | $56,399 | -$7,490 | -11.72% | |
| Jacobs Levy Equity Management, Inc | 0.00% | 162,505 | $63,068 | $55,674 | -$7,394 | -11.72% | |
| Wells Fargo & Company/Mn | 0.00% | 147,547 | $57,263 | $50,550 | -$6,713 | -11.72% | |
| Schonfeld Strategic Advisors Llc | 0.00% | 132,292 | $51,342 | $45,323 | -$6,019 | -11.72% | |
| Alliancebernstein L.P. | 0.00% | 54,730 | $45,130 | $18,750 | -$26,380 | -58.45% | |
| Hsbc Holdings Plc | 0.00% | 111,442 | $40,777 | $38,180 | -$2,597 | -6.37% | |
| Sei Investments Co | 0.00% | 88,948 | $34,517 | $30,474 | -$4,043 | -11.71% | |
| Rhumbline Advisers | 0.00% | 69,376 | $26,910 | $23,768 | -$3,142 | -11.68% | |
| Marshall Wace, Llp | 0.00% | 68,751 | $26,813 | $23,554 | -$3,259 | -12.15% | |
| Franklin Resources Inc | 0.00% | 65,681 | $25,491 | $22,502 | -$2,989 | -11.72% | |
| Panagora Asset Management Inc | 0.00% | 55,648 | $21,597 | $19,065 | -$2,532 | -11.72% |
Frequently asked questions about ARAY
Who owns the most ARAY stock?
The largest holders of ARAY are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ACCURAY INC (ARAY).
Is ARAY widely held by superinvestors?
Many widely followed stocks like ARAY appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ARAY is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.