13F Insight
DOSSIER · 13F-HR · Q2 2026

LONESTAR CAPITAL MANAGEMENT LLC

$345M in tracked AUM across 29 positions as of Q2 2026.

LC
CIK 0001317410 · last filed Jun 30, 2026
Total AUM
$345M
as of Q2 2026
Holdings
29
—
positions
Whale Score
62
62
tracked
Activity
—
no data
changes this Q
AI Analysis · Q2 2026

Portfolio Overview

Lonestar Capital Management LLC reported a total portfolio value of $300.29 million as of September 30, 2025, representing a notable increase of 11.4% from the previous quarter's $269.59 million. The portfolio is highly concentrated, comprising only 16 holdings. The investment strategy appears to be a "core and satellite" approach, where the vast majority of assets are allocated to a passive core position tracking the broader market, while a smaller portion is actively ma...

Key Holdings

The portfolio is dominated by a single position: the SPDR S&P 500 ETF Trust (SPY). This holding alone is valued at $199.85 million, representing a massive 66.55% of the total assets. The manager increased this stake by 20.0% during the quarter, adding $45.39 million, signaling a preference for broad market exposure as the foundation of the portfolio.

Analysis generated by 13F Insight from SEC Form 13F filing data · Q2 2026. Methodology

Quarter at a glance — Q2 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q2 2026.

#HoldingValueSharesWeight
01
SPY
STATE STR SPDR S&P 500 ETF T
$112M2K32.4%02
QQQ
INVESCO QQQ TR
$74M1K21.3%03
GTX
GARRETT MOTION INC
$20M550K5.8%04
ET
ENERGY TRANSFER L P
$17M900K5.0%05
Y27183600
GLOBAL SHIP LEASE INC
$11M290K3.2%06
DHC
DIVERSIFIED HEALTHCARE TR
$10M1.1M2.8%07
TH
TARGET HOSPITALITY CORP
$9M433K2.6%08
BKD
BROOKDALE SR LIVING INC
$9M540K2.5%09
ATGE
COVISTA INC
$7M55K2.0%10
H8817H100
TRANSOCEAN LTD
$7M484K1.9%

Filing history

2026Q2Jun 30
$345M▼ 48.5%
29 positionsView →2026Q1Mar 31
$671M▲ 7.5%
32 positionsView →2025Q4Dec 31
$624M▲ 107.9%
31 positionsView →2025Q3Sep 30
$300M▲ 11.4%
16 positionsLocked2025Q2Jun 30
$270M▲ 3.3%
18 positionsLocked2025Q1Mar 31
$261M▼ 4.7%
18 positionsLocked2024Q4Dec 31
$274M▼ 53.7%
22 positionsLocked2024Q3Sep 30
$591M▲ 558.0%
20 positionsLocked2024Q2Jun 30
$90M▼ 92.0%
13 positionsLocked2024Q1Mar 31
$1.1B▲ 63.7%
22 positionsLocked2023Q4Dec 31
$684M▼ 2.9%
21 positionsLocked2023Q3Sep 30
$704M▼ 35.8%
27 positionsLocked
Showing 12 of 67