13F Filings History of PROSPECTOR PARTNERS LLC

Latest 13F report
Q3 2025 - 07 Nov 2025
Value $
$830,468,642
Signature - Title
John D. Gillespie - Managing Member
Location
Guilford, CT
Summary
This page shows a list of all the recent 13F filings made by PROSPECTOR PARTNERS LLC. Form 13F is required to be filed within 45 days of the end of a calendar quarter. PROSPECTOR PARTNERS LLC reported 90 stock holdings with total value $830,468,642 as of Q3 2025. Top holdings included BRKB, GL, BRO, PNC, and ETN.

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Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Filing Time
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
Q3 2019 112 $680,885,000 +$42,625,001 -$93,125,226 -$50,500,225 BRKB, RNR, BRO, GL, AXS 13F-HR 13 Nov 2019, 18:23
Q2 2019 109 $725,805,000 +$47,592,706 -$32,424,841 +$15,167,865 BRKB, RNR, BRO, MSFT, TMK 13F-HR 13 Aug 2019, 19:59
Q1 2019 107 $656,963,000 +$32,659,747 -$58,122,131 -$25,462,384 BRKB, RNR, BRO, PNC, MSFT 13F-HR 14 May 2019, 17:47
Q4 2018 104 $620,210,000 +$71,844,640 -$57,506,667 +$14,337,973 BRKB, BRO, RNR, MSFT, PNC 13F-HR 13 Feb 2019, 18:01
Q3 2018 109 $681,590,000 +$37,519,622 -$53,464,369 -$15,944,747 BRKB, BRO, RNR, MSFT, PNC 13F-HR 13 Nov 2018, 17:52
Q2 2018 117 $655,426,000 +$45,568,789 -$47,714,469 -$2,145,680 BRKB, BRO, RNR, MSFT, PNC 13F-HR 13 Aug 2018, 18:02
Q1 2018 119 $662,658,000 +$58,368,586 -$43,934,972 +$14,433,614 BRKB, BRO, RNR, PNC, MSFT 13F-HR 14 May 2018, 18:01
Q4 2017 114 $672,351,000 +$26,979,021 -$39,693,600 -$12,714,579 BRKB, BRO, PNC, TROW, MSFT 13F-HR 13 Feb 2018, 18:22
Q3 2017 116 $652,271,000 +$40,528,411 -$38,997,067 +$1,531,344 BRKB, BRO, PNC, TROW, MSFT 13F-HR 13 Nov 2017, 18:58
Q2 2017 119 $627,249,000 +$23,609,212 -$44,092,289 -$20,483,077 BRKB, BRO, PNC, VR, MSFT 13F-HR 11 Aug 2017, 18:11
Q1 2017 124 $634,868,000 +$28,080,976 -$39,307,839 -$11,226,863 BRKB, PNC, BRO, VR, MSFT 13F-HR 12 May 2017, 17:42
Q4 2016 129 $633,761,000 +$84,762,146 -$101,686,423 -$16,924,277 BRKB, BRO, PNC, VR, C 13F-HR 14 Feb 2017, 09:12
Q3 2016 140 $589,773,000 +$54,725,012 -$23,820,595 +$30,904,417 BRKB, ENH, MSFT, BRO, TROW 13F-HR 14 Nov 2016, 09:06
Q2 2016 137 $550,715,000 +$53,617,589 -$61,641,171 -$8,023,582 BRKB, ENH, TROW, PRI, MSFT 13F-HR 12 Aug 2016, 17:48
Q1 2016 134 $543,595,000 +$50,208,040 -$65,554,665 -$15,346,625 BRKB, MSFT, ENH, TROW, WTM 13F-HR 13 May 2016, 17:54
Q4 2015 141 $545,142,000 +$49,515,181 -$212,126,516 -$162,611,335 BRKB, MSFT, ENH, MCD, CB 13F-HR 16 Feb 2016, 09:24
Q3 2015 146 $678,822,000 +$60,459,670 -$172,938,922 -$112,479,252 BRKB, MCD, MSFT, HD, CB 13F-HR 13 Nov 2015, 17:55
Q2 2015 150 $835,050,000 +$62,946,453 -$546,053,024 -$483,106,571 SYA, BRKB, WTM, CB, LM 13F-HR 14 Aug 2015, 15:03
Q1 2015 158 $1,324,705,000 +$137,508,016 -$123,658,485 +$13,849,531 BRKB, SYA, WTM, MCD, MRK 13F-HR 15 May 2015, 15:41
Q4 2014 158 $1,301,862,000 +$107,655,543 -$646,778,284 -$539,122,741 BRKB, SYA, MRK, WTM, HES 13F-HR 13 Feb 2015, 15:19
Q3 2014 181 $1,808,489,000 +$60,941,064 -$275,436,822 -$214,495,758 BRKB, HES, SYA, WMT, MRK 13F-HR 14 Nov 2014, 11:18
Q2 2014 189 $2,065,728,000 +$126,579,621 -$196,427,910 -$69,848,289 HES, BRKB, WMT, SYA, LM 13F-HR 14 Aug 2014, 13:25
Q1 2014 188 $2,083,684,000 +$139,084,559 -$350,493,752 -$211,409,193 BRKB, HES, UFS, LM, WMT 13F-HR 15 May 2014, 12:26
Q4 2013 192 $2,247,497,000 $0 $0 $0 HES, BRKB, UFS, ADP, JNJ 13F-HR 14 Feb 2014, 09:59