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Prospector Partners LLC

CIK:0001080380
Hedge Fund
$875M AUM
94 holdings
Guilford, CT, US
Founded:1997
12 employees
Latest filing:Jun 30, 2025

Prospector Partners LLC is an investment management firm headquartered in Guilford, Connecticut. Founded in 1997 by John Gillespie and Jack Byrne, the firm specializes in long/short and long-only equity strategies for institutions, family offices, and accredited investors. The team includes experienced portfolio managers with a background in value investing and significant tenure managing institutional portfolios. The firm typically serves clients seeking value-oriented, fundamental analysis focused on balance sheets and credit quality. Prospector Partners has managed assets for over 25 years and maintains a strong reputation for disciplined investment and client focus.

Investment Strategy

Prospector Partners LLC employs a value-based investment philosophy inspired by legendary value investors like Jack Byrne. The firm's strategies focus on long/short and long-only equity investments, emphasizing companies with strong balance sheets and credit profiles. The portfolio management team leverages fundamental analysis, seeking undervalued stocks and aiming for capital preservation while generating attractive risk-adjusted returns over the long term. They prioritize thorough research and a disciplined process oriented toward clients’ interests, with significant personal capital invested alongside client assets.

Top Buys
J
JOEST JOE CO
+$14.0M
K
KDPKEURIG DR PEPPER INC
+$12.1M
U
UNMUNUM GROUP
+$9.6M
F
FNBF N B CORP
+$9.5M
E
ETNEATON CORP PLC
+$6.0M
Top Sells
C
CCITIGROUP INC
-$8.8M
H
HESHESS CORP
-$8.5M
H
HSICHENRY SCHEIN INC
-$7.7M
K
KEYKEYCORP
-$6.9M
A
ABTABBOTT LABS
-$6.6M

Top Holdings

B
BRK-BBERKSHIRE HATHAWAY INC DEL
+3.6%$31.5M
B
BROBROWN & BROWN INC
+3.6%$31.3M
G
GLGLOBE LIFE INC
+2.9%$25.5M
A
AJGGALLAGHER ARTHUR J & CO
+2.8%$24.9M
P
PNCPNC FINL SVCS GROUP INC
+2.8%$24.7M

Equity Positions (81)

TickerSecurityWeightMarket ValueSharesAvg CostPriceChange (QoQ)
B
BRK-B
BERKSHIRE HATHAWAY INC DEL3.60%$31.5M64,810$107.44$485.77-$3.0M
B
BRO
BROWN & BROWN INC3.57%$31.3M281,877$28.48$110.87-$4.0M
G
GL
GLOBE LIFE INC2.91%$25.5M204,820$95.27$124.29-$2.5M
A
AJG
GALLAGHER ARTHUR J & CO2.84%$24.9M77,663$102.15$320.12-$3.0M
P
PNC
PNC FINL SVCS GROUP INC2.83%$24.7M132,672$157.05$186.42+$5.2M

Options Positions (3)

TickerSecurityActionTypeNotional ValueContractsUnderlying PricePremium PaidChange (Contracts)Change (Value)
U
USB
US BANCORP DEL
Call
$5.0M1,102$45.25$42.220+$333.9K
W
WMT
WALMART INCNew
Put
$4.7M480$97.78$97.78+480+$4.7M
M
MUR
MURPHY OIL CORP
Call
$3.3M1,450$22.50$28.400-$855.5K

Industry Allocation

STATE COMMERCIAL BANKS
+6.7%
FIRE, MARINE & CASUALTY INSURANCE
+6.7%
NATIONAL COMMERCIAL BANKS
+6.7%
INSURANCE AGENTS, BROKERS & SERVICE
+6.4%
PHARMACEUTICAL PREPARATIONS
+5.6%