PROSPECTOR PARTNERS LLC
Q2 2023 Form 13-F

GUILFORD, CONNECTICUT
CIK 0001080380 · CRD 123546 · SEC-registered investment adviser
Consolidated report · includes 1 manager since Q4 2024
$716.7M Reported Value Total

PROSPECTOR PARTNERS, LLC reports 7 total accounts under management (AUM). There are 7 discretionary accounts valued at $688,907,989, and 0 non-discretionary accounts.

Source: Form ADV filed * Note that certain holdings are exempt from Form 13-F reporting, so the AUM totals may be greater than the Form 13-F total.
SEC Registered Discretionary Manager
Private funds (Form ADV)
6 funds · $502.3M gross asset value
Hedge Fund: $492.2M · Other: $10.2M · Private Equity Fund: $7.0K
Source: Form ADV filed 2025-06-18
Reported value
$716.7M
Quarter over quarter
+4.0%
Holdings
84
Top-10 concentration
27.9%

Filing Structure

Reports holdings for

  • PROSPECTOR PARTNERS FUND, L.P. (not a 13F filer in our records) · File #028-11517 · since Q4 2024
  • PROSPECTOR FUNDS INC · File #028-15501 · Q2 2013 – Q2 2024
  • OneBeacon Insurance Group, Ltd. (not a 13F filer in our records) · File #028-12951 · Q2 2013 – Q2 2015
  • White Mountains Advisors LLC (not a 13F filer in our records) · File #028-10494 · Q2 2013 – Q1 2015

Key People

Form ADV owners & control persons
John Davies Gillespie
MANAGING MEMBER
Kevin Raymond Obrien
PORTFOLIO MANAGER
Jason A Kish
PORTFOLIO MANAGER
Q1 2023
Q3 2023
Go to latest

Coverage begins with the second quarter of 2013. Earlier quarters are not shown while their accuracy is being verified.

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Q2 2023 13F filing summary

Period of report June 30, 2023
Filed August 10, 2023
Form 13F-HR
Reported value $716.7M
Positions 84
Change in reported value -0.3%
New positions 5
Exited positions 8
Position turnover 14.1%
Top-10 concentration 27.9%

13F filings by quarter

Quarter Positions Value
Q4 2025 13F
Filed Feb 13, 2026
 16 $46.7M
Q3 2025 13F
Filed Nov 7, 2025
 81 $836.9M
Q2 2025 13F
Filed Aug 8, 2025
 82 $874.8M
Q1 2025 13F
Filed May 13, 2025
 80 $887.4M
Q4 2024 13F
Filed Feb 13, 2025
 83 $901.3M
Q3 2024 13F
Filed Nov 13, 2024
 84 $955.9M
Q2 2024 13F
Filed Aug 13, 2024
 82 $894.6M
Q1 2024 13F
Filed May 9, 2024
 83 $909.5M
Q4 2023 13F
Filed Feb 9, 2024
 82 $800.8M
Q3 2023 13F
Filed Nov 13, 2023
 82 $742.7M
Q2 2023 13F
Filed Aug 10, 2023
 84 $716.7M
Q1 2023 13F
Filed May 8, 2023
 86 $718.9M
Q4 2022 13F
Filed Feb 15, 2023
 98 $731.2M
Q3 2022 13F
Filed Nov 10, 2022
 98 $671.7M
Q2 2022 13F
Filed Aug 11, 2022
 94 $686.7M
Q1 2022 13F
Filed May 12, 2022
 97 $808.8M
Q4 2021 13F
Filed Feb 11, 2022
 101 $865.0M
Q3 2021 13F
Filed Nov 10, 2021
 102 $778.7M
Q2 2021 13F
Filed Aug 11, 2021
 104 $794.3M
Q1 2021 13F
Filed May 13, 2021
 106 $781.8M

31 earlier quarters on file — choose one from the quarter menu above.

Top 20 holdings · Q2 2023

# Holding Reported value % of portfolio
1 BRK-B BERKSHIRE HATHAWAY INC DEL $32.8M 4.58%
2 GL GLOBE LIFE INC $22.5M 3.14%
3 AJG GALLAGHER ARTHUR J & CO $21.9M 3.06%
4 BRO BROWN & BROWN INC $19.9M 2.77%
5 MRK MERCK & CO INC $18.1M 2.53%
6 LDOS LEIDOS HOLDINGS INC $17.6M 2.45%
7 PXD PIONEER NAT RES CO $17.6M 2.45%
8 CW CURTISS WRIGHT CORP $17.1M 2.39%
9 PRI PRIMERICA INC $16.6M 2.31%
10 LFUS LITTELFUSE INC $15.9M 2.22%
11 CHD CHURCH & DWIGHT CO INC $15.9M 2.22%
12 PNR PENTAIR PLC $15.4M 2.15%
13 PPG PPG INDS INC $15.4M 2.15%
14 MDLZ MONDELEZ INTL INC $15.2M 2.13%
15 ETN EATON CORP PLC $14.7M 2.05%
16 MDT MEDTRONIC PLC $14.7M 2.05%
17 CARR CARRIER GLOBAL CORPORATION $13.3M 1.85%
18 EG EVEREST RE GROUP LTD $13.0M 1.82%
19 DRI DARDEN RESTAURANTS INC $11.8M 1.65%
20 WRB BERKLEY W R CORP $11.5M 1.6%

Values as reported on the Q2 2023 Form 13F. Every position is in the holdings table below.

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