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LONESTAR CAPITAL MANAGEMENT LLC — 13F Holdings & Portfolio

CIK 1317410 · latest 13F-HR filed 2026-08-14

Backtest portfolio

LONESTAR CAPITAL MANAGEMENT LLC manages $345.4M in 13F-reported U.S. long-equity assets across 29 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are SPY (32.43%), QQQ (21.32%), GTX (5.77%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 5 new positions, exited 5, added to 5, and trimmed 14.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

Filer Information
Address
601 CALIFORNIA STREET, 5TH FLOOR
SAN FRANCISCO, CA 94108
Phone
(415) 433-2010
Filing Manager
LONESTAR CAPITAL MANAGEMENT LLC
San Francisco, CA
Signatory
Yedi Wong
Chief Financial Officer
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AUM

$345.4M

Long-equity book

Holdings

29

Distinct positions

Period

2026-06-30

Filed 2026-08-14

Q/Q Activity

+5 / −5 / ↑5 / ↓14

vs 2026-03-31

Firm Profile & Key People
Name Title / Status Ownership Type

Top Adds (vs prior quarter)

  • GARRETT MOTION INC$5.4M +37.1%
  • TARGET HOSPITALITY CORP$5.3M +153.4%
  • GLOBAL SHIP LEASE INC$4.9M +83.1%
  • LUMEN TECHNOLOGIES INC$886.2K +30.0%
  • UNIVERSAL TECHNICAL INST INC$567.0K +18.5%
Show all 5 →

Top Trims

  • CELANESE CORP DEL-$8.1M -61.5%
  • NRG ENERGY INC-$4.8M -55.0%
  • EXPAND ENERGY CORPORATION-$4.3M -46.3%
  • DAUCH CORP-$3.7M -42.1%
  • TRANSOCEAN LTD-$3.6M -61.1%
Show all 14 →

New Positions

  • COVISTA INC$6.9M
  • KYIVSTAR GROUP LTD$3.9M
  • GALAXY DIGITAL INC.$1.9M
  • ADT INC DEL$1.6M
  • SERVICE PPTYS TR$1.5M
Show all 5 →

Exited Positions

  • VANECK ETF TRUST$7.2M
  • PG&E CORP$6.7M
  • POOL CORP$3.0M
  • BRASKEM SA$1.8M
  • SUPER MICRO COMPUTER INC$1.0M
Show all 5 →
All Holdings

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 STATE STR SPDR S&P 500 ETF T Put SPY 78462F103 $112.0M 32.43% 1,500 SH
2 INVESCO QQQ TR Put QQQ 46090E103 $73.6M 21.32% 1,000 SH
3 GARRETT MOTION INC GTX 366505105 $19.9M 5.77% 550,000 SH
4 ENERGY TRANSFER L P ET 29273V100 $17.2M 4.98% 900,000 SH
5 GLOBAL SHIP LEASE INC GSL Y27183600 $10.9M 3.16% 290,000 SH
6 DIVERSIFIED HEALTHCARE TR DHC 25525P107 $9.8M 2.83% 1,050,000 SH
7 TARGET HOSPITALITY CORP TH 87615L107 $8.8M 2.55% 433,100 SH
8 BROOKDALE SR LIVING INC BKD 112463104 $8.7M 2.52% 540,000 SH
9 COVISTA INC CVSA 00737L103 $6.9M 1.99% 55,000 SH
10 VISTRA CORP VST 92840M102 $6.3M 1.84% 40,000 SH
11 TALEN ENERGY CORP TLN 87422Q109 $6.1M 1.78% 16,000 SH
12 VANECK ETF TRUST GDX 92189F106 $6.0M 1.75% 80,000 SH
13 DAUCH CORP DCH 024061103 $5.1M 1.49% 950,000 SH
14 CELANESE CORP DEL CE 150870103 $5.1M 1.47% 110,000 SH
15 EXPAND ENERGY CORPORATION EXE 165167735 $5.0M 1.45% 55,000 SH
16 TRANSOCEAN LTD Call RIG H8817H100 $4.4M 1.27% 9,000 SH
17 LINCOLN EDL SVCS CORP LINC 533535100 $4.2M 1.21% 83,911 SH
18 DOW HLDGS INC DOW 260557103 $4.1M 1.19% 150,000 SH
19 NRG ENERGY INC NRG 629377508 $3.9M 1.14% 27,000 SH
20 KYIVSTAR GROUP LTD KYIV G5331N101 $3.9M 1.12% 240,000 SH
21 LUMEN TECHNOLOGIES INC LUMN 550241103 $3.8M 1.11% 500,000 SH
22 UNIVERSAL TECHNICAL INST INC UTI 913915104 $3.6M 1.05% 85,000 SH
23 EQT CORP EQT 26884L109 $3.2M 0.92% 60,000 SH
24 LYONDELLBASELL INDUSTRIES NV LYB N53745100 $3.2M 0.91% 60,000 SH
25 TRANSOCEAN LTD RIG H8817H100 $2.3M 0.67% 475,000 SH
26 SEADRILL LTD SDRL G7997W102 $2.1M 0.60% 55,000 SH
27 GALAXY DIGITAL INC. GLXY 36317J209 $1.9M 0.55% 70,000 SH
28 ADT INC DEL ADT 00090Q103 $1.6M 0.47% 250,000 SH
29 SERVICE PPTYS TR SVC 81761L102 $1.5M 0.44% 900,000 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-14 $345.4M 29 0000935836-26-000402
2026-03-31 2026-05-15 $670.8M 32 0000935836-26-000253
2025-12-31 2026-02-17 $624.2M 31 0000935836-26-000100
2025-09-30 2025-11-14 $684.9M 27 0000935836-25-000675