13F Filings History of PROSPECTOR PARTNERS LLC
- Latest 13F filing
- Q4 2025 - 13 Feb 2026
- Latest reported 13F value
- $46,700,884
- Largest 13F holdings
-
XOM PGR MSFT BRKB PJT RTX HD AEM GOOGL PRI CBOE CCBG
+4 more
WTM ABCB BRO AJG - Form 13F summary
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- 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 signature
- John D. Gillespie - Managing Member
- Manager location
- Guilford, CT
13F snapshot
Latest parsed holdings, value, and filing-period context.
1 signal
Manager
Names, identifiers, and filing context for this profile.
2 identity fields
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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 |