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Lonestar Capital Management LLC

CIK:0001317410
Hedge Fund
$556M AUM
18 holdings
Menlo Park, CA, USA
Founded:2005
7 employees
Latest filing:Jun 30, 2025

Lonestar Capital Management LLC is a hedge fund and investment adviser headquartered in Menlo Park, California. Founded in Delaware, the firm manages pooled investment vehicles and serves institutional clients. It maintains a small staff with approximately 7 employees and focuses on equity and options investing, as evidenced by its regular 13F filings. The firm is best known for long/short equity strategies and value-driven portfolio management and has reported hundreds of millions in assets under management across a concentrated list of positions.

Investment Strategy

Lonestar Capital Management LLC employs a value-oriented, long/short equity strategy with a focus on concentrated bets in U.S. equities and select options positions. The firm is driven by deep fundamental research and dynamic portfolio rebalancing, prioritizing liquidity, diversification across sectors, and opportunistic buying and selling as market conditions dictate. Recent filings show significant allocations to technology, index ETFs, and energy companies, reflecting a tactical approach to asset allocation and risk-adjusted returns.

Top Buys
G
GLNGGOLAR LNG LTD
+$9.1M
G
GDXVANECK ETF TRUST
+$8.1M
G
GDXJVANECK ETF TRUST
+$6.4M
G
GSLGLOBAL SHIP LEASE INC NEW
+$5.3M
G
GNRCGENERAC HLDGS INC
+$4.3M
Top Sells
F
FSLRFIRST SOLAR INC
-$3.8M
G
GCIGANNETT CO INC
-$3.0M
P
PTONPELOTON INTERACTIVE INC
-$2.2M
S
SBLKSTAR BULK CARRIERS CORP.
-$778.0K
E
ETENERGY TRANSFER L P
-$552.0K

Top Holdings

E
ETENERGY TRANSFER L P
+8.1%$21.8M
D
DHCDIVERSIFIED HEALTHCARE TR
+5.2%$14.0M
N
NRGNRG ENERGY INC
+3.6%$9.6M
G
GTXGARRETT MOTION INC
+3.5%$9.5M
G
GLNGGOLAR LNG LTD
+3.4%$9.1M

Equity Positions (17)

TickerSecurityWeightMarket ValueSharesAvg CostPriceChange (QoQ)
E
ET
ENERGY TRANSFER L P8.07%$21.8M1,200,000$9.39$18.13-$552.0K
D
DHC
DIVERSIFIED HEALTHCARE TR5.18%$14.0M3,900,000$1.41$3.58+$4.1M
N
NRG
NRG ENERGY INC3.57%$9.6M60,000$92.58$160.58+$3.9M
G
GTX
GARRETT MOTION INC3.51%$9.5M900,000$7.62$10.51+$1.5M
G
GLNG
GOLAR LNG LTD3.36%$9.1M220,000$41.19$41.19+$9.1M

Options Positions (1)

TickerSecurityActionTypeNotional ValueContractsUnderlying PricePremium PaidChange (Contracts)Change (Value)
S
SPY
SPDR S&P 500 ETF TRBought
Put
$154.5M25$617.85$617.85+25+$154.5M

Industry Allocation

NATURAL GAS TRANSMISSION
+8.1%
CRUDE PETROLEUM & NATURAL GAS
+5.7%
REAL ESTATE INVESTMENT TRUSTS
+5.2%
MOTOR VEHICLE PARTS & ACCESSORIES
+4.4%
ELECTRIC SERVICES
+3.6%