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Accuray (ARAY) Institutional Ownership

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$0.28 +0.00 (+0.98%)
Closing price 08/14/2026 04:00 PM Eastern
Extended Trading
$0.29 +0.01 (+3.16%)
As of 08/14/2026 07:54 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Accuray (NASDAQ:ARAY)

Current
Institutional Ownership
Percentage
64.08%
Number of
Institutional Buyers
(last 12 months)
40
Total
Institutional Inflows
(last 12 months)
$19.29M
Number of
Institutional Sellers
(last 12 months)
23
Total
Institutional Outflows
(last 12 months)
$8.92M
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ARAY Institutional Buying and Selling by Quarter

Accuray Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/14/2026Hsbc Holdings PLC111,442$29K0.0%N/A0.094%
8/13/2026 Weber Capital Management LLC ADV4,932,706$1.27B1.1%N/A4.147%
8/12/2026 Ieq Capital LLC333,267$86K0.0%N/A0.280%
8/7/2026 BlackRock Inc.3,266,185$842K0.0%N/A2.746%
7/8/2026 Williams & Novak LLC238,230$61K0.0%+30.9%0.200%
5/21/2026 Silverback Asset Management LLC1,650,000$640K0.1%+7.7%1.387%
5/14/2026 Renaissance Technologies LLC2,290,984$889K0.0%-6.6%1.926%
5/7/2026 Heartland Advisors Inc.1,977,450$767K0.0%-40.6%1.665%
4/23/2026 North Star Investment Management Corp.164,620$64K0.0%-75.9%0.139%
2/23/2026 Virtu Financial LLC166,673$137K0.0%N/A0.140%
2/19/2026Invesco Ltd.245,000$202K0.0%+52.7%0.216%
2/18/2026 Mackenzie Financial Corp1,918,086$1.54M0.0%+76.5%1.692%
2/18/2026TENOR CAPITAL MANAGEMENT Co. L.P.500,000$412K0.0%-50.0%0.441%
2/18/2026Oxford Asset Management LLP53,526$44K0.0%N/A0.047%
2/18/2026Bridgeway Capital Management LLC174,425$144K0.0%+34.8%0.154%
2/18/2026Armistice Capital LLC4,500,000$3.71M0.0%+35.4%3.970%
2/17/2026Schonfeld Strategic Advisors LLC294,720$243K0.0%N/A0.260%
2/17/2026AQR Capital Management LLC42,653$35K0.0%-69.0%0.038%
2/17/2026 TCW Group Inc.15,467,952$12.68M0.1%+29.9%13.647%
2/17/2026 Kovack Advisors Inc.953,075$786K0.0%-7.1%0.841%
2/17/2026Public Employees Retirement System of Ohio77,600$64K0.0%+267.8%0.068%
2/16/2026 Panagora Asset Management Inc.84,989$70K0.0%+33.6%0.075%
2/13/2026Wells Fargo & Company MN220,009$181K0.0%-38.2%0.194%
2/12/2026Jane Street Group LLC328,043$271K0.0%+164.7%0.289%
2/12/2026 Renaissance Technologies LLC2,452,607$2.02M0.0%-1.3%2.164%
2/12/2026 Dimensional Fund Advisors LP294,963$243K0.0%-13.1%0.260%
2/12/2026 Kovack Advisors Inc.953,075$766K0.0%-7.1%0.841%
2/12/2026 Nuveen LLC293,679$242K0.0%-73.4%0.259%
2/11/2026 Heartland Advisors Inc.3,328,307$2.75M0.1%-33.4%2.937%
2/11/2026 Janney Montgomery Scott LLC50,032$41K0.0%N/A0.044%
2/11/2026 LPL Financial LLC34,025$28K0.0%-42.3%0.030%
2/10/2026Goldman Sachs Group Inc.773,774$638K0.0%+34.8%0.683%
2/5/2026 Williams & Novak LLC118,855$98K0.1%+53.5%0.105%
2/4/2026 Perkins Capital Management Inc.86,500$71K0.1%+22.2%0.076%
2/3/2026 Mitsubishi UFJ Asset Management Co. Ltd.283,595$241K0.0%+194.2%0.250%
1/30/2026 North Star Investment Management Corp.684,320$564K0.0%-41.1%0.604%
1/29/2026 Weber Capital Management LLC ADV5,055,294$4.17M3.9%N/A4.460%
1/12/2026 Silverberg Bernstein Capital Management LLC648,548$535K0.3%+2.4%0.572%
1/9/2026 Assenagon Asset Management S.A.205,228$169K0.0%-58.4%0.181%
1/1/2026 JPMorgan Chase & Co.182,494$305K0.0%+266.0%0.161%
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11/18/2025 Acuitas Investments LLC2,392,126$4.00M2.6%+67.7%2.111%
11/17/2025Jacobs Levy Equity Management Inc.523,145$874K0.0%+52.3%0.462%
11/17/2025Armistice Capital LLC3,324,000$5.55M0.1%+2.7%2.933%
11/17/2025Susquehanna International Group LLP189,388$316K0.0%-19.8%0.167%
11/17/2025Public Employees Retirement System of Ohio21,100$35K0.0%N/A0.019%
11/17/2025Millennium Management LLC154,415$258K0.0%-65.7%0.136%
11/17/2025Citadel Advisors LLC662,499$1.11M0.0%-9,301.4%0.585%
11/17/2025Ameriprise Financial Inc.43,582$73K0.0%N/A0.038%
11/14/2025TENOR CAPITAL MANAGEMENT Co. L.P.1,000,000$1.67M0.0%-33.3%0.882%
11/14/2025Two Sigma Investments LP263,845$441K0.0%N/A0.233%
11/14/2025Bridgeway Capital Management LLC129,400$216K0.0%-39.6%0.114%
11/14/2025 Silverback Asset Management LLC1,066,054$1.78M0.2%-8.6%0.941%
11/13/2025 UBS Group AG373,832$624K0.0%-79.0%0.330%
11/13/2025 BNP Paribas Financial Markets39,369$66K0.0%+32.4%0.035%
11/13/2025 Mackenzie Financial Corp1,086,866$1.82M0.0%-2.6%0.959%
11/13/2025 Russell Investments Group Ltd.226,467$378K0.0%+17.7%0.200%
11/12/2025 Teton Advisors LLC40,000$67K0.0%N/A0.035%
11/12/2025 Dimensional Fund Advisors LP339,293$566K0.0%-21.9%0.299%
11/12/2025 R Squared Ltd40,550$68K0.0%+94.0%0.036%
11/12/2025 Intech Investment Management LLC48,690$81K0.0%-22.9%0.043%
11/10/2025 Kovack Advisors Inc.1,025,875$1.71M0.2%-4.8%0.905%
11/7/2025 Heartland Advisors Inc.4,996,500$8.34M0.4%-1.2%4.433%
11/7/2025 GSA Capital Partners LLP80,701$135K0.0%N/A0.072%
11/7/2025Vanguard Group Inc.5,476,677$9.15M0.0%+2.0%4.859%
11/7/2025 JPMorgan Chase & Co.182,494$305K0.0%+266.0%0.162%
11/5/2025 Envestnet Asset Management Inc.59,204$99K0.0%+408.0%0.053%
11/3/2025 Acuitas Investments LLC2,392,126$4.00M1.7%+67.7%2.122%
10/30/2025 Williams & Novak LLC77,430$129K0.1%+12.3%0.069%
10/22/2025 North Star Investment Management Corp.1,162,320$1.94M0.1%-2.6%1.031%
10/9/2025 Voya Investment Management LLC21,433$36K0.0%-29.8%0.019%
10/7/2025 Silverberg Bernstein Capital Management LLC633,248$1.06M0.6%+9.3%0.562%
10/7/2025 Assenagon Asset Management S.A.493,727$825K0.0%+199.2%0.438%
8/15/2025 Tower Research Capital LLC TRC 35,177$48K0.0%+604.2%0.031%
8/15/2025 BNP Paribas Financial Markets29,736$41K0.0%-68.4%0.026%
8/15/2025Bank of America Corp DE127,849$175K0.0%-6.3%0.114%
8/14/2025Jane Street Group LLC28,779$39K0.0%-68.7%0.026%
8/14/2025TENOR CAPITAL MANAGEMENT Co. L.P.1,500,000$2.06M0.0%N/A1.332%
8/14/2025 Globeflex Capital L P248,265$340K0.0%+35.1%0.220%
8/14/2025Armistice Capital LLC3,236,000$4.43M0.1%+27.6%2.873%
8/14/2025Sei Investments Co.93,843$129K0.0%+83.0%0.083%
8/14/2025 Marathon Capital Management100,000$137K0.0%-9.1%0.089%
8/13/2025Archon Capital Management LLC297,560$408K0.3%-30.8%0.264%
8/13/2025 Marshall Wace LLP598,293$820K0.0%N/A0.531%
8/13/2025Invesco Ltd.175,134$240K0.0%-19.1%0.155%
8/13/2025 Silverback Asset Management LLC1,166,054$1.60M0.2%+1,588.4%1.035%
8/12/2025 JPMorgan Chase & Co.49,866$68K0.0%-81.4%0.044%
8/12/2025 Dynamic Technology Lab Private Ltd112,072$154K0.0%N/A0.099%
8/11/2025Primecap Management Co. CA33,700$46K0.0%-79.1%0.030%
8/8/2025 Geode Capital Management LLC2,421,724$3.32M0.0%+7.8%2.150%
8/7/2025CSM Advisors LLC386,350$527K0.0%N/A0.343%
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8/7/2025 Connor Clark & Lunn Investment Management Ltd.536,102$734K0.0%+47.2%0.476%
8/7/2025 Mitsubishi UFJ Asset Management Co. Ltd.96,099$132K0.0%-27.1%0.085%
8/7/2025 Los Angeles Capital Management LLC283,302$388K0.0%+18.5%0.252%
8/4/2025 Kovack Advisors Inc.1,077,475$1.48M0.1%+12.5%0.957%
7/24/2025 Williams & Novak LLC68,970$94K0.1%+25.5%0.067%
7/15/2025 North Star Investment Management Corp.1,192,820$1.63M0.1%+12.7%1.158%
7/9/2025 Silverberg Bernstein Capital Management LLC579,248$794K0.5%+28.3%0.562%
6/27/2025Goldman Sachs Group Inc.477,906$855K0.0%-2.8%0.464%
5/19/2025Jane Street Group LLC91,944$165K0.0%+429.3%0.089%
5/16/2025Goldman Sachs Group Inc.477,906$855K0.0%-2.8%0.464%


ARAY Institutional Ownership - Frequently Asked Questions

During the previous two years, 95 institutional investors and hedge funds held shares of Accuray. The most heavily invested institutionals were Weber Capital Management LLC ADV ($1.27B), TCW Group Inc. ($12.68M), Vanguard Group Inc. ($9.15M), Acuitas Investments LLC ($4.00M), Armistice Capital LLC ($3.71M), D. E. Shaw & Co. Inc. ($3.55M), and State Street Corp ($3.41M).Learn more on Accuray's institutional investors.

64.08% of Accuray's stock is owned by institutional investors. Learn more on ARAY's institutional investor holdings.

Of the 80 institutional investors that purchased Accuray's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Weber Capital Management LLC ADV ($9.99M), Armistice Capital LLC ($3.76M), TCW Group Inc. ($3.56M), BlackRock Inc. ($3.27M), Acuitas Investments LLC ($2.64M), Mackenzie Financial Corp ($1.54M), and TENOR CAPITAL MANAGEMENT Co. L.P. ($1.50M).

Institutional investors have bought a total of 25,096,819 shares in the last 24 months. This purchase volume represents approximately $19.29M in transactions.

Of the 21 institutional investors that sold Accuray's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Heartland Advisors Inc. ($3.08M), UBS Group AG ($1.41M), North Star Investment Management Corp. ($1.03M), TENOR CAPITAL MANAGEMENT Co. L.P. ($1M), Nuveen LLC ($810.48K), Millennium Management LLC ($295.29K), and Assenagon Asset Management S.A. ($288.50K).

Institutional investors have sold a total of 9,053,581 shares in the last 24 months. This volume of shares sold represents approximately $8.92M in transactions.


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Institutional ownership data for NASDAQ:ARAY is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/14/2026. New 13F filings are added each quarter as they're published.
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