13F Filings History of Weiss Asset Management LP

13F snapshot Latest parsed holdings, value, and filing-period context. 1 signal
Form 13F summary
  • Weiss Asset Management LP Form 13F history summarizes parsed U.S.-listed equity disclosures for this manager.
  • Form 13F is generally due within 45 days after each calendar quarter ends.
  • Weiss Asset Management LP reported 472 equity holdings with a total reported market value of $5,417,568,606 for Q1 2026. Top reported holdings included NVDA, PSLV, STRATEGY INC, SUPER MICRO COMPUTER INC, and NEEPRV.
Manager Names, identifiers, and filing context for this profile. 2 identity fields
Manager signature
Mary Merrigan - Authorized Signatory
Manager location
Boston, MA

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Holdings Value

Form 13F evidence

Quarterly portfolio filings

SEC-reported 13F quarters for this filer, ordered by the latest accepted filing.

Latest quarter
Q1 2026
Latest value
$5,417,568,606
Quarter delta
+$4,985,539,498
Accepted
15 May 2026, 14:20
Rows shown
1-25 of 70
Quarter Holdings SEC-reported value Bought Sold Net Top Holdings Form Type Accepted by SEC
Q1 2026 472 $5,417,568,606 +$2,944,398,396 -$4,230,768,001 -$1,286,369,605 NVDA, PSLV, STRATEGY INC, SUPER MICRO COMPUTER INC, NEEPRV 13F-HR 15 May 2026, 14:20
Q4 2025 5 $432,029,108 $0 $0 $0 RNAM, CYBR, EXAS, KVUE, MBC New Holdings 15 May 2026, 14:13
Q4 2025 551 $7,053,284,644 +$3,456,300,227 -$2,707,698,897 +$748,601,330 NVDA, IBIT, INTERDIGITAL INC, STRATEGY INC, RNAM 13F-HR 17 Feb 2026, 11:36
Q3 2025 2 $128,607,947 $0 $0 $0 CYBR, MBC New Holdings 15 May 2026, 14:09
Q3 2025 2 $286,544,546 $0 $0 $0 K, ZK New Holdings 17 Feb 2026, 11:19
Q3 2025 582 $7,003,514,700 +$3,386,408,903 -$3,006,175,423 +$380,233,480 NVDA, IBIT, MSTR, INTERDIGITAL INC, K 13F-HR 14 Nov 2025, 10:29
Q2 2025 1 $62,540,770 $0 $0 $0 IPG New Holdings 17 Feb 2026, 11:12
Q2 2025 1 $67,832,821 $0 $0 $0 AMED New Holdings 14 Nov 2025, 10:14
Q2 2025 397 $6,324,015,476 +$3,764,657,168 -$1,740,472,124 +$2,024,185,044 NVDA, MSTR, IBIT, COIN, SMCI 13F-HR 14 Aug 2025, 10:15
Q1 2025 1 $39,295,858 $0 $0 $0 OMC New Holdings 14 Aug 2025, 10:10
Q1 2025 293 $3,725,499,467 +$2,387,419,902 -$2,974,799,513 -$587,379,611 MSTR, NVDA, SUPER MICRO COMPUTER INC, ITCI, TSLA 13F-HR 15 May 2025, 11:22
Q4 2024 13 $473,083,423 $0 $0 $0 HCP, JNPR, EDR, DFS, ANSS New Holdings 15 May 2025, 11:16
Q4 2024 596 $4,383,101,478 +$2,936,754,678 -$2,466,388,948 +$470,365,730 HCP, NRG ENERGY INC, CAMTEK LTD, IBIT, INTERDIGITAL INC 13F-HR 14 Feb 2025, 11:13
Q3 2024 15 $201,546,125 $0 $0 $0 CATALENT INC, EDR, JNPR, DFS, R1 RCM INC New Holdings 15 May 2025, 11:12
Q3 2024 3 $42,832,593 $0 $0 $0 HPE, SQSP, KR New Holdings 04 Feb 2025, 09:38
Q3 2024 578 $3,931,352,638 +$2,925,762,189 -$1,163,023,110 +$1,762,739,079 NRG ENERGY INC, CAMTEK LTD, PERFICIENT INC, EQC, NIO INC 13F-HR 14 Nov 2024, 10:08
Q2 2024 254 $2,082,615,849 +$1,537,849,642 -$1,562,830,318 -$24,980,676 NEEPRS, PERFICIENT INC, NRG ENERGY INC, TBPH, ENPHASE ENERGY INC 13F-HR 14 Aug 2024, 11:43
Q1 2024 283 $2,135,951,674 +$1,554,867,665 -$818,013,922 +$736,853,743 SPY, PXD, TJX, TBPH, NEE 13F-HR 13 May 2024, 10:15
Q4 2023 344 $1,398,089,128 +$955,199,160 -$878,935,555 +$76,263,605 SPLUNK INC, TBPH, CYTOKINETICS INC, NEE, VNET GROUP INC 13F-HR 12 Feb 2024, 12:12
Q3 2023 156 $1,259,704,857 +$965,381,586 -$437,173,963 +$528,207,623 ATVI, NIMC, HZNP, TBPH, SPLUNK INC 13F-HR 14 Nov 2023, 11:34
Q2 2023 2 $1,647,267 $0 $0 $0 TSVT, VCXBWS New Holdings 16 Nov 2023, 12:55
Q2 2023 198 $767,916,997 +$283,094,838 -$823,005,126 -$539,910,288 TBPH, IWM, LI AUTO INC, QQQ, NEEPRQ 13F-HR 11 Aug 2023, 11:07
Q1 2023 2 $322,272 $0 $0 $0 TXG, VCXBWS New Holdings 16 Nov 2023, 12:51
Q1 2023 314 $1,267,996,177 +$709,867,367 -$1,565,993,664 -$856,126,297 OAK STR HEALTH INC, TBPH, LI AUTO INC, BILIBILI INC, LIN 13F-HR 10 May 2023, 13:31
Q4 2022 2 $14,537,405 $0 $0 $0 1LIFE HEALTHCARE INC, VCXBWS New Holdings 16 Nov 2023, 12:45
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