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 -$105,965,619 -$49,363,238 BRKB, GL, BRO, PNC, ETN 13F-HR 07 Nov 2025, 15:39
Q2 2025 91 $861,894,001 +$68,727,886 -$103,453,102 -$34,725,216 BRKB, BRO, GL, AJG, PNC 13F-HR 08 Aug 2025, 13:56
Q1 2025 90 $875,713,039 +$90,421,861 -$107,731,528 -$17,309,667 BRO, BRKB, GL, AJG, ABT 13F-HR 13 May 2025, 16:31
Q4 2024 92 $882,846,185 +$59,740,067 -$89,319,515 -$29,579,448 BRKB, BRO, ABT, GL, ETN 13F-HR 13 Feb 2025, 09:18
Q3 2024 93 $937,153,250 +$69,786,737 -$68,546,016 +$1,240,721 BRKB, BRO, PGR, CW, LDOS 13F-HR 13 Nov 2024, 10:56
Q2 2024 92 $853,252,340 +$59,192,963 -$50,192,316 +$9,000,647 LDOS, BRKB, BRO, PGR, CW 13F-HR 13 Aug 2024, 16:44
Q1 2024 93 $863,662,595 +$58,821,625 -$66,881,556 -$8,059,931 BRKB, LDOS, BRO, GL, CW 13F-HR 09 May 2024, 08:37
Q4 2023 92 $800,805,689 +$66,979,887 -$43,029,206 +$23,950,681 BRKB, GL, LDOS, AJG, CW 13F-HR 09 Feb 2024, 15:32
Q3 2023 101 $742,744,133 +$78,282,366 -$44,099,090 +$34,183,276 BRKB, AJG, GL, BRO, LDOS 13F-HR 13 Nov 2023, 09:41
Q2 2023 93 $716,689,219 +$51,598,634 -$36,195,700 +$15,402,934 BRKB, GL, AJG, BRO, MRK 13F-HR 10 Aug 2023, 13:00
Q1 2023 101 $718,898,670 +$107,410,811 -$42,210,032 +$65,200,779 BRKB, GL, AJG, MRK, VOYA 13F-HR 08 May 2023, 16:56
Q4 2022 110 $730,717,588 +$54,635,085 -$49,622,432 +$5,012,653 BRKB, GL, AJG, MRK, BRO 13F-HR 14 Feb 2023, 19:14
Q3 2022 112 $671,679,000 +$57,131,414 -$39,180,563 +$17,950,851 BRKB, GL, BRO, AJG, FHI 13F-HR 10 Nov 2022, 09:59
Q2 2022 103 $686,742,000 +$40,728,545 -$54,158,664 -$13,430,119 BRKB, GL, MRK, PXD, BRO 13F-HR 11 Aug 2022, 15:31
Q1 2022 105 $808,781,000 +$85,044,182 -$67,110,438 +$17,933,744 BRKB, Y, PXD, GL, BRO 13F-HR 12 May 2022, 16:38
Q4 2021 109 $864,982,000 +$54,344,035 -$21,920,126 +$32,423,909 BRKB, Y, CMA, BRO, RNR 13F-HR 11 Feb 2022, 15:45
Q3 2021 110 $778,736,000 +$27,124,774 -$36,249,124 -$9,124,350 BRKB, Y, CMA, USB, KEY 13F-HR 10 Nov 2021, 16:20
Q2 2021 113 $794,042,000 +$25,786,062 -$46,353,671 -$20,567,609 BRKB, Y, RNR, GL, USB 13F-HR 11 Aug 2021, 17:08
Q1 2021 114 $778,499,000 +$78,432,636 -$180,081,641 -$101,649,005 BRKB, RNR, Y, GL, CMA 13F-HR 13 May 2021, 08:24
Q4 2020 116 $804,167,000 +$94,734,739 -$54,080,577 +$40,654,162 BRKB, RNR, BRO, GL, AJG 13F-HR 11 Feb 2021, 14:01
Q3 2020 109 $661,232,895 +$92,374,329 -$13,806,831 +$78,567,498 BRKB, RNR, BRO, AJG, Y 13F-HR 13 Nov 2020, 15:34
Q2 2020 107 $574,969,000 +$85,176,913 -$73,625,246 +$11,551,667 BRKB, RNR, BRO, AJG, GL 13F-HR 14 Aug 2020, 10:34
Q1 2020 110 $529,398,000 +$81,855,058 -$42,240,765 +$39,614,293 BRKB, RNR, BRO, GL, PNC 13F-HR 13 May 2020, 15:41
Q4 2019 113 $711,741,000 +$58,543,053 -$45,343,740 +$13,199,313 BRKB, BRO, RNR, GL, PNC 13F-HR 13 Feb 2020, 11:06
Q3 2019 114 $684,201,000 +$42,624,989 -$57,169,229 -$14,544,240 BRKB, RNR, BRO, GL, AXS 13F-HR 13 Nov 2019, 17:23
Q2 2019 111 $729,149,000 +$50,936,718 -$20,094,843 +$30,841,875 BRKB, RNR, BRO, MSFT, TMK 13F-HR 13 Aug 2019, 19:59
Q1 2019 109 $659,624,000 +$32,659,764 -$40,776,890 -$8,117,126 BRKB, RNR, BRO, PNC, MSFT 13F-HR 14 May 2019, 17:47
Q4 2018 109 $641,796,000 +$73,360,410 -$29,939,432 +$43,420,978 BRKB, BRO, RNR, MSFT, PNC 13F-HR 13 Feb 2019, 17:01
Q3 2018 119 $724,333,000 +$48,089,260 -$31,928,067 +$16,161,193 BRKB, BRO, RNR, MSFT, PNC 13F-HR 13 Nov 2018, 16:52
Q2 2018 126 $716,167,000 +$82,892,536 -$29,053,474 +$53,839,062 BRKB, BRO, RNR, MSFT, PNC 13F-HR 13 Aug 2018, 18:02
Q1 2018 123 $684,441,000 +$76,505,553 -$22,549,989 +$53,955,564 BRKB, BRO, RNR, PNC, MSFT 13F-HR 14 May 2018, 18:01
Q4 2017 118 $685,967,000 +$33,782,019 -$22,502,601 +$11,279,418 BRKB, BRO, PNC, TROW, MSFT 13F-HR 13 Feb 2018, 17:22
Q3 2017 119 $659,578,000 +$42,238,406 -$15,121,064 +$27,117,342 BRKB, BRO, PNC, TROW, MSFT 13F-HR 13 Nov 2017, 17:58
Q2 2017 122 $637,081,000 +$23,609,227 -$35,140,178 -$11,530,951 BRKB, BRO, PNC, VR, MSFT 13F-HR 11 Aug 2017, 18:11
Q1 2017 131 $654,324,000 +$33,411,993 -$29,524,499 +$3,887,494 BRKB, PNC, BRO, VR, MSFT 13F-HR 12 May 2017, 17:42
Q4 2016 141 $674,184,000 +$103,902,866 -$52,708,627 +$51,194,239 BRKB, BRO, PNC, VR, C 13F-HR 14 Feb 2017, 08:12
Q3 2016 150 $627,327,000 +$70,022,978 -$20,314,499 +$49,708,479 BRKB, ENH, MSFT, BRO, TROW 13F-HR 14 Nov 2016, 08:06
Q2 2016 148 $589,650,000 +$90,181,596 -$41,679,585 +$48,502,011 BRKB, ENH, TROW, PRI, MSFT 13F-HR 12 Aug 2016, 17:48
Q1 2016 141 $579,720,000 +$82,220,999 -$33,636,006 +$48,584,993 BRKB, MSFT, ENH, TROW, WTM 13F-HR 13 May 2016, 17:54
Q4 2015 145 $561,337,000 +$57,439,181 -$179,526,358 -$122,087,177 BRKB, MSFT, ENH, MCD, CBXXXX 13F-HR 16 Feb 2016, 08:24
Q3 2015 150 $694,089,000 +$68,099,632 -$112,859,272 -$44,759,640 BRKB, MCD, MSFT, HD, CBXXXX 13F-HR 13 Nov 2015, 16:55
Q2 2015 150 $841,505,674 +$67,233,544 -$455,635,206 -$388,401,662 SYA, BRKB, WTM, CBXXXX, LM 13F-HR 14 Aug 2015, 15:03
Q1 2015 158 $1,276,024,685 +$84,890,605 -$35,549,480 +$49,341,125 BRKB, SYA, WTM, MCD, MRK 13F-HR 15 May 2015, 15:41
Q4 2014 161 $1,318,171,000 +$111,441,330 -$443,249,521 -$331,808,191 BRKB, SYA, MRK, WTM, HES 13F-HR 13 Feb 2015, 14:19
Q3 2014 184 $1,825,113,000 +$60,941,145 -$238,293,767 -$177,352,622 BRKB, HES, SYA, WMT, MRK 13F-HR 14 Nov 2014, 10:18
Q2 2014 193 $2,088,203,000 +$136,151,164 -$96,269,000 +$39,882,164 HES, BRKB, WMT, SYA, LM 13F-HR 14 Aug 2014, 13:25
Q1 2014 190 $2,093,015,325 +$149,132,925 -$237,163,837 -$88,030,912 BRKB, HES, UFS, LM, WMT 13F-HR 15 May 2014, 12:26
Q4 2013 191 $2,246,809,000 $0 HES, BRKB, UFS, ADP, JNJ 13F-HR 14 Feb 2014, 08:59