Accuray (ARAY) Institutional Ownership

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Closing price 05/22/2026 04:00 PM Eastern

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As of 05/22/2026 07:49 PM Eastern

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Current Institutional Ownership Percentage: 64.08%
Number of Institutional Buyers (last 12 months): 45
Total Institutional Inflows (last 12 months): $24.27M

Number of Institutional Sellers (last 12 months): 29
Total Institutional Outflows (last 12 months): $9.81M

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ARAY Institutional Buying and Selling by Quarter

Accuray Major Shareholders & Ownership History

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Reporting Date	Major Shareholder Name	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
5/21/2026	Silverback Asset Management LLC	1,650,000	$640K	0.1%	+7.7%	1.387%
5/14/2026	Renaissance Technologies LLC	2,290,984	$889K	0.0%	-6.6%	1.926%
5/7/2026	Heartland Advisors Inc.	1,977,450	$767K	0.0%	-40.6%	1.665%
4/23/2026	North Star Investment Management Corp.	164,620	$64K	0.0%	-75.9%	0.139%
2/23/2026	Virtu Financial LLC	166,673	$137K	0.0%	N/A	0.140%
2/19/2026	Invesco Ltd.	245,000	$202K	0.0%	+52.7%	0.216%
2/18/2026	Mackenzie Financial Corp	1,918,086	$1.54M	0.0%	+76.5%	1.692%
2/18/2026	TENOR CAPITAL MANAGEMENT Co. L.P.	500,000	$412K	0.0%	-50.0%	0.441%
2/18/2026	Oxford Asset Management LLP	53,526	$44K	0.0%	N/A	0.047%
2/18/2026	Bridgeway Capital Management LLC	174,425	$144K	0.0%	+34.8%	0.154%
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2/18/2026	Armistice Capital LLC	4,500,000	$3.71M	0.0%	+35.4%	3.970%
2/17/2026	Schonfeld Strategic Advisors LLC	294,720	$243K	0.0%	N/A	0.260%
2/17/2026	AQR Capital Management LLC	42,653	$35K	0.0%	-69.0%	0.038%
2/17/2026	TCW Group Inc.	15,467,952	$12.68M	0.1%	+29.9%	13.647%
2/17/2026	Kovack Advisors Inc.	953,075	$786K	0.0%	-7.1%	0.841%
2/17/2026	Public Employees Retirement System of Ohio	77,600	$64K	0.0%	+267.8%	0.068%
2/16/2026	Panagora Asset Management Inc.	84,989	$70K	0.0%	+33.6%	0.075%
2/13/2026	Wells Fargo & Company MN	220,009	$181K	0.0%	-38.2%	0.194%
2/12/2026	Jane Street Group LLC	328,043	$271K	0.0%	+164.7%	0.289%
2/12/2026	Renaissance Technologies LLC	2,452,607	$2.02M	0.0%	-1.3%	2.164%
2/12/2026	Dimensional Fund Advisors LP	294,963	$243K	0.0%	-13.1%	0.260%
2/12/2026	Kovack Advisors Inc.	953,075	$766K	0.0%	-7.1%	0.841%
2/12/2026	Nuveen LLC	293,679	$242K	0.0%	-73.4%	0.259%
2/11/2026	Heartland Advisors Inc.	3,328,307	$2.75M	0.1%	-33.4%	2.937%
2/11/2026	Janney Montgomery Scott LLC	50,032	$41K	0.0%	N/A	0.044%
2/11/2026	LPL Financial LLC	34,025	$28K	0.0%	-42.3%	0.030%
2/10/2026	Goldman Sachs Group Inc.	773,774	$638K	0.0%	+34.8%	0.683%
2/5/2026	Williams & Novak LLC	118,855	$98K	0.1%	+53.5%	0.105%
2/4/2026	Perkins Capital Management Inc.	86,500	$71K	0.1%	+22.2%	0.076%
2/3/2026	Mitsubishi UFJ Asset Management Co. Ltd.	283,595	$241K	0.0%	+194.2%	0.250%
1/30/2026	North Star Investment Management Corp.	684,320	$564K	0.0%	-41.1%	0.604%
1/29/2026	Weber Capital Management LLC ADV	5,055,294	$4.17M	3.9%	N/A	4.460%
1/12/2026	Silverberg Bernstein Capital Management LLC	648,548	$535K	0.3%	+2.4%	0.572%
1/9/2026	Assenagon Asset Management S.A.	205,228	$169K	0.0%	-58.4%	0.181%
1/1/2026	JPMorgan Chase & Co.	182,494	$305K	0.0%	+266.0%	0.161%
11/18/2025	Acuitas Investments LLC	2,392,126	$4.00M	2.6%	+67.7%	2.111%
11/17/2025	Jacobs Levy Equity Management Inc.	523,145	$874K	0.0%	+52.3%	0.462%
11/17/2025	Armistice Capital LLC	3,324,000	$5.55M	0.1%	+2.7%	2.933%
11/17/2025	Susquehanna International Group LLP	189,388	$316K	0.0%	-19.8%	0.167%
11/17/2025	Public Employees Retirement System of Ohio	21,100	$35K	0.0%	N/A	0.019%
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11/17/2025	Millennium Management LLC	154,415	$258K	0.0%	-65.7%	0.136%
11/17/2025	Citadel Advisors LLC	662,499	$1.11M	0.0%	-9,301.4%	0.585%
11/17/2025	Ameriprise Financial Inc.	43,582	$73K	0.0%	N/A	0.038%
11/14/2025	TENOR CAPITAL MANAGEMENT Co. L.P.	1,000,000	$1.67M	0.0%	-33.3%	0.882%
11/14/2025	Two Sigma Investments LP	263,845	$441K	0.0%	N/A	0.233%
11/14/2025	Bridgeway Capital Management LLC	129,400	$216K	0.0%	-39.6%	0.114%
11/14/2025	Silverback Asset Management LLC	1,066,054	$1.78M	0.2%	-8.6%	0.941%
11/13/2025	UBS Group AG	373,832	$624K	0.0%	-79.0%	0.330%
11/13/2025	BNP Paribas Financial Markets	39,369	$66K	0.0%	+32.4%	0.035%
11/13/2025	Mackenzie Financial Corp	1,086,866	$1.82M	0.0%	-2.6%	0.959%
11/13/2025	Russell Investments Group Ltd.	226,467	$378K	0.0%	+17.7%	0.200%
11/12/2025	Teton Advisors LLC	40,000	$67K	0.0%	N/A	0.035%
11/12/2025	Dimensional Fund Advisors LP	339,293	$566K	0.0%	-21.9%	0.299%
11/12/2025	R Squared Ltd	40,550	$68K	0.0%	+94.0%	0.036%
11/12/2025	Intech Investment Management LLC	48,690	$81K	0.0%	-22.9%	0.043%
11/10/2025	Kovack Advisors Inc.	1,025,875	$1.71M	0.2%	-4.8%	0.905%
11/7/2025	Heartland Advisors Inc.	4,996,500	$8.34M	0.4%	-1.2%	4.433%
11/7/2025	GSA Capital Partners LLP	80,701	$135K	0.0%	N/A	0.072%
11/7/2025	Vanguard Group Inc.	5,476,677	$9.15M	0.0%	+2.0%	4.859%
11/7/2025	JPMorgan Chase & Co.	182,494	$305K	0.0%	+266.0%	0.162%
11/5/2025	Envestnet Asset Management Inc.	59,204	$99K	0.0%	+408.0%	0.053%
11/3/2025	Acuitas Investments LLC	2,392,126	$4.00M	1.7%	+67.7%	2.122%
10/30/2025	Williams & Novak LLC	77,430	$129K	0.1%	+12.3%	0.069%
10/22/2025	North Star Investment Management Corp.	1,162,320	$1.94M	0.1%	-2.6%	1.031%
10/9/2025	Voya Investment Management LLC	21,433	$36K	0.0%	-29.8%	0.019%
10/7/2025	Silverberg Bernstein Capital Management LLC	633,248	$1.06M	0.6%	+9.3%	0.562%
10/7/2025	Assenagon Asset Management S.A.	493,727	$825K	0.0%	+199.2%	0.438%
8/15/2025	Tower Research Capital LLC TRC	35,177	$48K	0.0%	+604.2%	0.031%
8/15/2025	BNP Paribas Financial Markets	29,736	$41K	0.0%	-68.4%	0.026%
8/15/2025	Bank of America Corp DE	127,849	$175K	0.0%	-6.3%	0.114%
8/14/2025	Jane Street Group LLC	28,779	$39K	0.0%	-68.7%	0.026%
8/14/2025	TENOR CAPITAL MANAGEMENT Co. L.P.	1,500,000	$2.06M	0.0%	N/A	1.332%
8/14/2025	Globeflex Capital L P	248,265	$340K	0.0%	+35.1%	0.220%
8/14/2025	Armistice Capital LLC	3,236,000	$4.43M	0.1%	+27.6%	2.873%
8/14/2025	Sei Investments Co.	93,843	$129K	0.0%	+83.0%	0.083%
8/14/2025	Marathon Capital Management	100,000	$137K	0.0%	-9.1%	0.089%
8/13/2025	Archon Capital Management LLC	297,560	$408K	0.3%	-30.8%	0.264%
8/13/2025	Marshall Wace LLP	598,293	$820K	0.0%	N/A	0.531%
8/13/2025	Invesco Ltd.	175,134	$240K	0.0%	-19.1%	0.155%
8/13/2025	Silverback Asset Management LLC	1,166,054	$1.60M	0.2%	+1,588.4%	1.035%
8/12/2025	JPMorgan Chase & Co.	49,866	$68K	0.0%	-81.4%	0.044%
8/12/2025	Dynamic Technology Lab Private Ltd	112,072	$154K	0.0%	N/A	0.099%
8/11/2025	Primecap Management Co. CA	33,700	$46K	0.0%	-79.1%	0.030%
8/8/2025	Geode Capital Management LLC	2,421,724	$3.32M	0.0%	+7.8%	2.150%
8/7/2025	CSM Advisors LLC	386,350	$527K	0.0%	N/A	0.343%
8/7/2025	Connor Clark & Lunn Investment Management Ltd.	536,102	$734K	0.0%	+47.2%	0.476%
8/7/2025	Mitsubishi UFJ Asset Management Co. Ltd.	96,099	$132K	0.0%	-27.1%	0.085%
8/7/2025	Los Angeles Capital Management LLC	283,302	$388K	0.0%	+18.5%	0.252%
8/4/2025	Kovack Advisors Inc.	1,077,475	$1.48M	0.1%	+12.5%	0.957%
7/24/2025	Williams & Novak LLC	68,970	$94K	0.1%	+25.5%	0.067%
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7/15/2025	North Star Investment Management Corp.	1,192,820	$1.63M	0.1%	+12.7%	1.158%
7/9/2025	Silverberg Bernstein Capital Management LLC	579,248	$794K	0.5%	+28.3%	0.562%
6/27/2025	Goldman Sachs Group Inc.	477,906	$855K	0.0%	-2.8%	0.464%
5/19/2025	Jane Street Group LLC	91,944	$165K	0.0%	+429.3%	0.089%
5/16/2025	Goldman Sachs Group Inc.	477,906	$855K	0.0%	-2.8%	0.464%
5/16/2025	Jacobs Levy Equity Management Inc.	472,969	$847K	0.0%	+46.0%	0.459%
5/16/2025	AQR Capital Management LLC	162,922	$292K	0.0%	+762.3%	0.158%
5/15/2025	Armistice Capital LLC	2,536,000	$4.54M	0.1%	+105.2%	2.462%
5/15/2025	State of Wyoming	67,505	$121K	0.0%	-32.3%	0.066%
5/14/2025	MetLife Investment Management LLC	38,203	$68K	0.0%	-20.8%	0.037%

ARAY Institutional Ownership - Frequently Asked Questions

During the previous two years, 97 institutional investors and hedge funds held shares of Accuray. The most heavily invested institutionals were TCW Group Inc. ($12.68M), Vanguard Group Inc. ($9.15M), Weber Capital Management LLC ADV ($4.17M), 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 83 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 ($5.06M), Armistice Capital LLC ($3.76M), TCW Group Inc. ($3.56M), Acuitas Investments LLC ($2.64M), Mackenzie Financial Corp ($1.54M), TENOR CAPITAL MANAGEMENT Co. L.P. ($1.50M), and Silverback Asset Management LLC ($1.21M).

Institutional investors have bought a total of 21,684,588 shares in the last 24 months. This purchase volume represents approximately $24.27M in transactions.

Of the 29 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 9,695,123 shares in the last 24 months. This volume of shares sold represents approximately $9.81M in transactions.

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This page (NASDAQ:ARAY) was last updated on 5/26/2026 by MarketBeat.com Staff.

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Accuray (ARAY) Institutional Ownership

ARAY Institutional Buying and Selling by Quarter

Accuray Major Shareholders & Ownership History

ARAY Institutional Ownership - Frequently Asked Questions

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Accuray (ARAY) Institutional Ownership

Institutional Ownership Changes (13F Filings) for Accuray (NASDAQ:ARAY)

ARAY Institutional Buying and Selling by Quarter

Accuray Major Shareholders & Ownership History

ARAY Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of ARAY shares?

What percentage of Accuray's stock is owned by institutional investors?

Which institutional investors have been buying Accuray's stock?

How much institutional buying is happening at Accuray?

Which of Accuray's major shareholders have been selling company stock?

How much institutional selling is happening at Accuray?

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