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LONESTAR CAPITAL MANAGEMENT LLC — 13F Holdings & Portfolio

CIK 1317410 · latest 13F-HR filed 2026-05-15

Backtest portfolio

LONESTAR CAPITAL MANAGEMENT LLC manages $670.8M in 13F-reported U.S. long-equity assets across 32 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are QQQ (17.21%), HYG (16.61%), SPY (15.51%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 5 new positions, exited 7, added to 13, and trimmed 8.

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.

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AUM

$670.8M

Long-equity book

Holdings

32

Distinct positions

Period

2026-03-31

Filed 2026-05-15

Q/Q Activity

+5 / −7 / ↑13 / ↓8

vs 2025-12-31

Firm Profile & Key People
Name Title / Status Ownership Type

Top Adds (vs prior quarter)

  • DOW HLDGS INC$4.0M +113.8%
  • VISTRA CORP$3.6M +94.1%
  • TALEN ENERGY CORP$3.6M +59.7%
  • CELANESE CORP DEL$3.2M +32.4%
  • NRG ENERGY INC$2.9M +48.8%
Show all 13 →

Top Trims

  • DAUCH CORP-$4.9M -35.7%
  • DIVERSIFIED HEALTHCARE TR-$3.9M -27.0%
  • SEADRILL LTD-$2.4M -34.2%
  • PG&E CORP-$2.2M -24.5%
  • TRANSOCEAN LTD-$1.5M -19.7%
Show all 8 →

New Positions

  • LYONDELLBASELL INDUSTRIES NV$4.8M
  • UNIVERSAL TECHNICAL INST INC$3.1M
  • POOL CORP$3.0M
  • BRASKEM SA$1.8M
  • SUPER MICRO COMPUTER INC$1.0M
Show all 5 →

Exited Positions

  • DRIVEN BRANDS HLDGS INC$8.3M
  • ADT INC DEL$4.2M
  • COMPASS INC$2.9M
  • HUDSON PAC PPTYS INC$2.7M
  • WILLOW LANE ACQUISITION CORP$2.5M
Show all 7 →
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 INVESCO QQQ TR Put QQQ 46090E103 $115.4M 17.21% 2,000 SH
2 ISHARES TR Put HYG 464288513 $111.4M 16.61% 14,000 SH
3 STATE STR SPDR S&P 500 ETF T Put SPY 78462F103 $104.1M 15.51% 1,600 SH
4 ISHARES TR Put TLT 464287432 $86.7M 12.92% 10,000 SH
5 ISHARES TR Put IWM 464287655 $49.6M 7.39% 2,000 SH
6 PG&E CORP Call PCG 69331C108 $17.6M 2.62% 10,000 SH
7 ENERGY TRANSFER L P ET 29273V100 $17.4M 2.59% 900,000 SH
8 GARRETT MOTION INC GTX 366505105 $14.5M 2.17% 800,000 SH
9 CELANESE CORP DEL CE 150870103 $13.2M 1.96% 200,000 SH
10 DIVERSIFIED HEALTHCARE TR DHC 25525P107 $10.6M 1.58% 1,600,000 SH
11 TALEN ENERGY CORP TLN 87422Q109 $9.6M 1.43% 30,000 SH
12 EXPAND ENERGY CORPORATION EXE 165167735 $9.3M 1.39% 85,000 SH
13 BROOKDALE SR LIVING INC BKD 112463104 $9.0M 1.35% 660,000 SH
14 DAUCH CORP DCH 024061103 $8.9M 1.33% 1,500,000 SH
15 NRG ENERGY INC NRG 629377508 $8.8M 1.31% 60,000 SH
16 VISTRA CORP VST 92840M102 $7.5M 1.12% 50,000 SH
17 DOW HLDGS INC DOW 260557103 $7.5M 1.12% 180,000 SH
18 VANECK ETF TRUST GDX 92189F106 $7.3M 1.09% 80,000 SH
19 VANECK ETF TRUST GDXJ 92189F791 $7.2M 1.07% 60,000 SH
20 PG&E CORP PCG 69331C108 $6.7M 1.00% 380,000 SH
21 LINCOLN EDL SVCS CORP LINC 533535100 $6.1M 0.91% 150,000 SH
22 TRANSOCEAN LTD RIG H8817H100 $6.0M 0.89% 900,000 SH
23 GLOBAL SHIP LEASE INC GSL Y27183600 $6.0M 0.89% 160,000 SH
24 EQT CORP EQT 26884L109 $5.7M 0.85% 90,000 SH
25 LYONDELLBASELL INDUSTRIES NV LYB N53745100 $4.8M 0.72% 60,000 SH
26 SEADRILL LTD SDRL G7997W102 $4.5M 0.68% 100,000 SH
27 TARGET HOSPITALITY CORP TH 87615L107 $3.5M 0.52% 375,000 SH
28 UNIVERSAL TECHNICAL INST INC UTI 913915104 $3.1M 0.46% 85,000 SH
29 POOL CORP POOL 73278L105 $3.0M 0.45% 15,000 SH
30 LUMEN TECHNOLOGIES INC LUMN 550241103 $3.0M 0.44% 425,000 SH
31 BRASKEM SA BAK 105532105 $1.8M 0.27% 500,000 SH
32 SUPER MICRO COMPUTER INC SMCI 86800U302 $1.0M 0.15% 45,000 SH
Filing History
Period Filed AUM Holdings Accession
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