13F Filings History of PROSPECTOR PARTNERS LLC

13F snapshot Latest parsed holdings, value, and filing-period context. 1 signal
Form 13F summary
  • PROSPECTOR PARTNERS LLC 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.
  • PROSPECTOR PARTNERS LLC reported 16 equity holdings with a total reported market value of $46,700,884 for Q4 2025. Top reported holdings included XOM, PGR, MSFT, BRKB, and PJT.
Manager Names, identifiers, and filing context for this profile. 2 identity fields
Manager signature
John D. Gillespie - Managing Member
Manager location
Guilford, CT

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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
Q4 2025
Latest value
$46,700,884
Quarter delta
-$783,767,758
Accepted
13 Feb 2026, 14:51
Rows shown
1-25 of 49
Quarter Holdings SEC-reported value Bought Sold Net Top Holdings Form Type Accepted by SEC
Q4 2025 16 $46,700,884 $0 -$780,637,642 -$780,637,642 XOM, PGR, MSFT, BRKB, PJT 13F-HR 13 Feb 2026, 14:51
Q3 2025 90 $830,468,642 +$56,602,381 -$105,965,615 -$49,363,234 BRKB, GL, BRO, PNC, ETN 13F-HR 07 Nov 2025, 15:39
Q2 2025 91 $861,894,001 +$68,727,886 -$103,453,097 -$34,725,211 BRKB, BRO, GL, AJG, PNC 13F-HR 08 Aug 2025, 13:56
Q1 2025 90 $875,713,039 +$90,421,851 -$107,731,528 -$17,309,677 BRO, BRKB, GL, AJG, ABT 13F-HR 13 May 2025, 16:31
Q4 2024 92 $882,846,185 +$59,740,067 -$89,319,514 -$29,579,447 BRKB, BRO, ABT, GL, ETN 13F-HR 13 Feb 2025, 09:18
Q3 2024 93 $937,153,250 +$69,786,734 -$68,546,018 +$1,240,716 BRKB, BRO, PGR, CW, LDOS 13F-HR 13 Nov 2024, 10:56
Q2 2024 92 $853,252,340 +$59,192,967 -$50,192,317 +$9,000,650 LDOS, BRKB, BRO, PGR, CW 13F-HR 13 Aug 2024, 16:44
Q1 2024 93 $863,662,595 +$58,821,597 -$66,881,556 -$8,059,959 BRKB, LDOS, BRO, GL, CW 13F-HR 09 May 2024, 08:37
Q4 2023 90 $793,699,042 +$66,979,882 -$43,029,204 +$23,950,678 BRKB, GL, LDOS, AJG, CW 13F-HR 09 Feb 2024, 15:32
Q3 2023 91 $715,539,018 +$51,077,252 -$44,099,090 +$6,978,162 BRKB, AJG, GL, BRO, LDOS 13F-HR 13 Nov 2023, 09:41
Q2 2023 93 $716,689,219 +$51,598,642 -$51,218,019 +$380,623 BRKB, GL, AJG, BRO, MRK 13F-HR 10 Aug 2023, 13:00
Q1 2023 96 $689,068,690 +$77,997,239 -$122,018,215 -$44,020,976 BRKB, GL, AJG, MRK, VOYA 13F-HR 08 May 2023, 16:56
Q4 2022 107 $726,482,759 +$54,196,481 -$57,222,177 -$3,025,696 BRKB, GL, AJG, MRK, BRO 13F-HR 14 Feb 2023, 20:14
Q3 2022 107 $651,900,000 +$37,352,417 -$44,767,562 -$7,415,145 BRKB, GL, BRO, AJG, FHI 13F-HR 10 Nov 2022, 10:59
Q2 2022 103 $686,742,000 +$40,728,568 -$76,655,665 -$35,927,097 BRKB, GL, MRK, PXD, BRO 13F-HR 11 Aug 2022, 15:31
Q1 2022 105 $808,781,000 +$85,044,185 -$145,629,433 -$60,585,248 BRKB, Y, PXD, GL, BRO 13F-HR 12 May 2022, 16:38
Q4 2021 109 $864,982,000 +$54,344,029 -$26,556,130 +$27,787,899 BRKB, Y, CMA, BRO, RNR 13F-HR 11 Feb 2022, 16:45
Q3 2021 110 $778,736,000 +$27,124,772 -$36,249,110 -$9,124,338 BRKB, Y, CMA, USB, KEY 13F-HR 10 Nov 2021, 16:20
Q2 2021 113 $794,042,000 +$25,786,026 -$46,353,679 -$20,567,653 BRKB, Y, RNR, GL, USB 13F-HR 11 Aug 2021, 17:08
Q1 2021 114 $778,499,000 +$78,432,645 -$180,223,955 -$101,791,310 BRKB, RNR, Y, GL, CMA 13F-HR 13 May 2021, 08:24
Q4 2020 117 $804,380,000 +$94,734,727 -$64,892,565 +$29,842,162 BRKB, RNR, BRO, GL, AJG 13F-HR 11 Feb 2021, 15:01
Q3 2020 109 $665,124,000 +$96,265,458 -$33,882,838 +$62,382,620 BRKB, RNR, BRO, AJG, Y 13F-HR 13 Nov 2020, 16:34
Q2 2020 107 $574,969,000 +$85,176,917 -$110,759,238 -$25,582,321 BRKB, RNR, BRO, AJG, GL 13F-HR 14 Aug 2020, 10:34
Q1 2020 110 $529,398,000 +$81,855,005 -$98,481,762 -$16,626,757 BRKB, RNR, BRO, GL, PNC 13F-HR 13 May 2020, 15:41
Q4 2019 112 $711,228,000 +$58,934,056 -$59,014,512 -$80,456 BRKB, BRO, RNR, GL, PNC 13F-HR 13 Feb 2020, 12:06
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