Acacia Research Corporation
US ˙ NasdaqGS ˙ US0038813079

SecurityACTG / Acacia Research Corporation
InstitutionState Street Corp
Latest Disclosed Ownership3,105,041 shares
Latest Disclosed Value $ 14,935,247
State Street Corp reports 1.30% decrease in ownership of ACTG / Acacia Research Corporation

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 3,105,041 shares of Acacia Research Corporation (US:ACTG) valued at $14,935,247 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 3,145,981 shares of Acacia Research Corporation. This represents a change in shares of -1.30% during the quarter. The current value of the position is $14,593,693 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ACACIA RESH ACACIA TCH COM 003881307 3,105,041 -40,940 -1.30 14,935 26.94 0.0005
2026-02-13 2025-12-31 13F ACACIA RESH ACACIA TCH COM 003881307 3,145,981 355,916 12.76 11,766 29.76 0.0004
2025-11-14 2025-09-30 13F ACACIA RESH ACACIA TCH COM 003881307 2,790,065 -26,082 -0.93 9,068 -10.06 0.0003
2025-08-14 2025-06-30 13F ACACIA RESH ACACIA TCH COM 003881307 2,816,147 10,200 0.36 10,082 12.27 0.0004
2025-05-15 2025-03-31 13F ACACIA RESH ACACIA TCH COM 003881307 2,805,947 -150,900 -5.10 8,979 -30.03 0.0004
2025-02-14 2024-12-31 13F ACACIA RESH ACACIA TCH COM 003881307 2,956,847 -194,800 -6.18 12,833 -12.62 0.0005
2024-11-14 2024-09-30 13F ACACIA RESH ACACIA TCH COM 003881307 3,151,647 265,993 9.22 14,687 1.58 0.0006
2024-08-14 2024-06-30 13F ACACIA RESH ACACIA TCH COM 003881307 2,885,654 96,482 3.46 14,457 -2.75 0.0006
2024-05-15 2024-03-31 13F ACACIA RESH ACACIA TCH COM 003881307 2,789,172 106,108 3.95 14,866 41.35 0.0007
2024-02-14 2023-12-31 13F ACACIA RESH ACACIA TCH COM 003881307 2,683,064 1,633,468 155.63 10,518 174.52 0.0005
2023-11-14 2023-09-30 13F ACACIA RESH ACACIA TCH COM 003881307 1,049,596 -171,344 -14.03 3,831 -24.57 0.0002
2023-08-14 2023-06-30 13F ACACIA RESH ACACIA TCH COM 003881307 1,220,940 906,112 287.81 5,079 318.02 0.0003
2023-05-15 2023-03-31 13F ACACIA RESH ACACIA TCH COM 003881307 314,828 165,442 110.75 1,215 93.47 0.0001
2023-05-15 2022-12-31 13F/A-99 ACACIA RESH ACACIA TCH COM 003881307 149,386 -900 -0.60 629 3.46 0.0000
2023-05-15 2022-12-31 13F ACACIA RESH ACACIA TCH COM 003881307 149,386 -900 629 0.0000
2022-11-15 2022-09-30 13F ACACIA RESH ACACIA TCH COM 003881307 150,286 -39,178 -20.68 607 -36.44 0.0000
2022-08-15 2022-06-30 13F ACACIA RESH ACACIA TCH COM 003881307 189,464 -743,446 -79.69 955 -77.30 0.0001
2022-05-16 2022-03-31 13F ACACIA RESH ACACIA TCH COM 003881307 932,910 -724 -0.08 4,207 -12.17 0.0002
2022-02-14 2021-12-31 13F ACACIA RESH ACACIA TCH COM 003881307 933,634 -21,058 -2.21 4,790 -26.10 0.0002
2021-11-15 2021-09-30 13F ACACIA RESH ACACIA TCH COM 003881307 954,692 1,433 0.15 6,482 0.59 0.0003
2021-08-16 2021-06-30 13F ACACIA RESH ACACIA TCH COM 003881307 953,259 75,416 8.59 6,444 10.38 0.0003
2021-07-09 2021-03-31 13F/A-1 ACACIA RESH ACACIA TCH COM 003881307 877,843 -55,719 -5.97 5,838 58.73 0.0003
2021-05-17 2021-03-31 13F ACACIA RESH ACACIA TCH COM 003881307 877,843 -55,719 5,838 0.0003
2021-02-16 2020-12-31 13F ACACIA RESH ACACIA TCH COM 003881307 933,562 25,911 2.85 3,678 16.76 0.0002
2020-11-10 2020-09-30 13F ACACIA RESH ACACIA TCH COM 003881307 907,651 -46,023 -4.83 3,150 -19.25 0.0002
2020-08-14 2020-06-30 13F ACACIA RESH ACACIA TCH COM 003881307 953,674 35,508 3.87 3,901 91.41 0.0003
2020-06-19 2020-03-31 13F/A-1 ACACIA RESH ACACIA TCH COM 003881307 918,166 -18,215 -1.95 2,038 -18.19 0.0002
2020-05-11 2020-03-31 13F ACACIA RESH ACACIA TCH COM 003881307 918,166 -18,215 2,038 178.9774
2020-02-06 2019-12-31 13F ACACIA RESH ACACIA TCH COM 003881307 936,381 15,789 1.72 2,491 0.97 0.0002
2019-11-14 2019-09-30 13F ACACIA RESH ACACIA TCH COM 003881307 920,592 -7,841 -0.84 2,467 -10.23 0.0002
2019-08-14 2019-06-30 13F ACACIA RESH ACACIA TCH COM 003881307 928,433 16,870 1.85 2,748 -7.54 0.0002
2019-05-15 2019-03-31 13F ACACIA RESH ACACIA TCH COM 003881307 911,563 5,750 0.63 2,972 10.11 0.0002
2019-02-12 2018-12-31 13F ACACIA RESH ACACIA TCH COM 003881307 905,813 -45,976 -4.83 2,699 -11.45 0.0002
2018-11-09 2018-09-30 13F ACACIA RESEARCH Common equity shares 003881307 951,789 20,266 2.18 3,048 -21.16 0.0002
2018-08-14 2018-06-30 13F ACACIA RESEARCH Common equity shares 003881307 931,523 7,590 0.82 3,866 19.54 0.0003
2018-05-15 2018-03-31 13F ACACIA RESEARCH Common equity shares 003881307 923,933 21,466 2.38 3,234 -11.45 0.0003
2018-02-14 2017-12-31 13F ACACIA RESEARCH Common equity shares 003881307 902,467 3,491 0.39 3,652 -10.69 0.0003
2017-11-14 2017-09-30 13F ACACIA RESEARCH Common equity shares 003881307 898,976 -3,319 -0.37 4,089 10.48 0.0004
2017-08-14 2017-06-30 13F ACACIA RESEARCH Common equity shares 003881307 902,295 40,245 4.67 3,701 -25.35 0.0003
2017-05-15 2017-03-31 13F ACACIA RESEARCH Common equity shares 003881307 862,050 11,986 1.41 4,958 -10.28 0.0004
2017-02-09 2016-12-31 13F ACACIA RESEARCH Common equity shares 003881307 850,064 34,165 4.19 5,526 3.85 0.0005
2017-01-13 2016-09-30 13F/A-1 ACACIA RESEARCH Common equity shares 003881307 815,899 674 0.08 5,321 48.38 0.0005
2016-11-14 2016-09-30 13F ACACIA RESEARCH Common equity shares 003881307 815,899 5,321
2016-08-12 2016-06-30 13F ACACIA RESEARCH Common equity shares 003881307 815,225 -52,206 -6.02 3,586 9.13 0.0004
2016-05-20 2016-03-31 13F/A-1 ACACIA RESEARCH Common equity shares 003881307 867,431 19,535 2.30 3,286 -9.65 0.0004
2016-05-12 2016-03-31 13F ACACIA RESEARCH Common equity shares 003881307 867,431 3,286
2016-02-16 2015-12-31 13F ACACIA RESEARCH Common equity shares 003881307 847,896 23,760 2.88 3,637 -51.37 0.0004
2015-11-16 2015-09-30 13F ACACIA RESEARCH Common equity shares 003881307 824,136 -2,253 -0.27 7,479 3.24 0.0009
2015-08-13 2015-06-30 13F ACACIA RESEARCH Common equity shares 003881307 826,389 -5,812 -0.70 7,244 -18.65 0.0008
2015-05-15 2015-03-31 13F ACACIA RESEARCH Common equity shares 003881307 832,201 9,177 1.12 8,905 -36.13 0.0009
2015-02-11 2014-12-31 13F ACACIA RESEARCH Common equity shares 003881307 823,024 3,153 0.38 13,943 9.88 0.0014
2014-11-12 2014-09-30 13F/A-1 ACACIA RESEARCH Common equity shares 003881307 819,871 -23,329 -2.77 12,689 -15.21 0.0014
2014-11-10 2014-09-30 13F ACACIA RESEARCH Common equity shares 003881307 819,871 12,689
2014-08-12 2014-06-30 13F ACACIA RESEARCH Common equity shares 003881307 843,200 -20,737 -2.40 14,966 13.36 0.0016
2014-05-15 2014-03-31 13F/A-1 ACACIA RESEARCH Common equity shares 003881307 863,937 -6,255 -0.72 13,202 4.31 0.0015
2014-05-13 2014-03-31 13F ACACIA RESEARCH Common equity shares 003881307 863,937 13,202
2014-02-06 2013-12-31 13F/A-1 ACACIA RESEARCH Common equity shares 003881307 870,192 147 0.02 12,656 -36.92 0.0014
2014-02-06 2013-12-31 13F ACACIA RESEARCH Common equity shares 003881307 1,501,510 38,513
2013-11-12 2013-09-30 13F ACACIA RESEARCH Common Stock 003881307 870,045 -138,618 -13.74 20,063 -11.01 0.0025
2013-08-08 2013-06-30 13F ACACIA RESEARCH Common Stock 003881307 1,008,663 1,008,663 22,545 0.0029
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.