Acacia Research

ACTG · NASDAQ

$4.20+$0.03 (+0.72%)TodayMarket closed · Oct 20, 7:30 PM ET

Prev close $4.17

Who owns ACTG

Largest institutional holders, from their latest 13F filings

The 10 largest institutions hold 76.7% of ACTG’s shares.

Starboard Value LP61.2%
State Street Investment Management (US)3.2%
Dimensional Fund Advisors, L.P.2.9%
BlackRock Institutional Trust Company, N.A.2.4%
Next 6 largest institutions7.0%
All other shareholders23.3%

Top institutional holders of ACTG
Holder	Shares	% of shares	Change, last filing	Filed
Starboard Value LP	61.12M	61.19%	+0	Jun 30, 2026
State Street Investment Management (US)	3.17M	3.17%	+61.68K	Jun 30, 2026
Dimensional Fund Advisors, L.P.	2.94M	2.95%	+87.83K	Jun 30, 2026
BlackRock Institutional Trust Company, N.A.	2.35M	2.35%	+173.81K	Jun 30, 2026
Vanguard Capital Management, LLC	1.49M	1.49%	−110.93K	Jun 30, 2026
Renaissance Technologies LLC	1.42M	1.42%	+7.50K	Jun 30, 2026
Krilogy Financial LLC	1.13M	1.13%	+344	Jun 30, 2026
Goldman Sachs Asset Management, L.P.	1.09M	1.09%	+621.61K	Jun 30, 2026
Peapod Lane Capital LLC	994.77K	1.00%	−96.57K	Jun 30, 2026
Geode Capital Management, L.L.C.	900.81K	0.90%	+43.09K	Jun 30, 2026

Largest mutual fund holders

Top mutual fund holders of ACTG
Holder	Shares	% of shares	Change, last filing	Filed
Vanguard Total Stock Market Index Fund	1.07M	1.07%	+0	Jul 31, 2026
iShares Russell 2000 ETF	893.34K	0.89%	−3.89K	Jul 31, 2026
Avantis US Small Cap Value ETF	612.13K	0.61%	+0	Aug 31, 2026
Aegis Value Fund	491.09K	0.49%	+0	Jun 30, 2026
DFA US Small Cap Value Portfolio	475.21K	0.48%	+21.33K	May 31, 2026

Insider trades

Form 4 filings by officers, directors and large holders

Over the last 6 months, insiders sold $457.56K (5 trades) of ACTG on the open market, with no buys.

Latest ACTG insider transactions
Insider	Date	Type	Shares	Price	Value
Molinelli Gavin	Sep 30, 2026	Award	6.96K	$4.31	$30.00K
Kohlberg Isaac T.	Sep 15, 2026	Sale	24.00K	$4.55	$109.20K
OCONNELL MAUREEN	Sep 3, 2026	Sale	12.47K	$4.57	$56.97K
OCONNELL MAUREEN	Sep 2, 2026	Sale	20.53K	$4.63	$95.07K
FELMAN MICHELLE	Aug 28, 2026	Gift	16.09K	$4.49	$72.23K
FELMAN MICHELLE	Aug 28, 2026	Gift	16.09K	$4.49	$72.23K
OCONNELL MAUREEN	Aug 19, 2026	Sale	10.00K	$4.60	$46.00K
Kohlberg Isaac T.	Aug 12, 2026	Sale	32.19K	$4.67	$150.32K
Molinelli Gavin	Jun 30, 2026	Award	6.44K	$4.66	$30.00K
Sundar Ajay	Jun 23, 2026	Award	4.17K	$4.79	$20.00K

Short interest

Settled Sep 30, 2026

Shares short: 1.77M
Days to cover: 8.66
% of shares outstanding: 1.77%
Average daily volume: 204.15K
Change since last report: −13.6%

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