DOSSIER · 13F-HR · Q2 2026

GRITSTONE ASSET MANAGEMENT LLC

$104M in tracked AUM across 174 positions as of Q2 2026.

GA
CIK 0001964236 · last filed Jun 30, 2026
Total AUM
$104M
as of Q2 2026
Holdings
174
positions
Whale Score
50
50
tracked
Activity
no data
changes this Q
AI Analysis · Q2 2026

Comprehensive Analysis of SEC 13F Filing: GRITSTONE ASSET MANAGEMENT LLC

1. Portfolio Overview

GRITSTONE ASSET MANAGEMENT LLC manages a concentrated portfolio valued at approximately $104.80 million as of the report date December 31, 2025. This represents a growth of +7.8% from the previous quarter's value of $97.23 million. The portfolio consists of 148 holdings, indicating a strategy that balances diversification with a focus on specific asset classes. The firm’s turnover...

2. Key Holdings

The portfolio is characterized by a heavy skew towards its top assets, with the first position dominating the allocation.

  • Ares Capital Corp (ARCC): This is the standout holding, valued at $9.04 million, representing 8.63% of the total portfolio. With 447,000 shares, this is the only traditional operating company in the top ten. It serves as a significant anchor, providing exposure to business development companies (BDC) and direct lending.
  • SPAC Concentration: Excluding ARCC, the remainder of the top 10 positions consists entirely of Special Purpose Acquisition Companies (SPACs). Positions 2 through 5 (EQV Ventures, Oaktree Acquisition III, Aldel Finl II, and Bold Eagle) are tightly clustered, each representing between 3.48% and 4.03% of the portfolio. This clustering suggests a valuation-based approach to SPAC investing, targeting specific price points or trust values.
  • Uniform Position Sizing: A notable pattern in the top 50 holdings is the uniformity in share counts for many SPACs. Numerous positions (e.g., positions 20 through 31) hold exactly 125,000 or 150,000 shares, implying a systematic allocation strategy rather than stock-picking based on individual sponsor merit.
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
ARCC
ARES CAPITAL CORP
$8M447K8.0%
02
G6717R104
OAKTREE ACQUISITION CORP III
$4M395K4.1%
03
G01558108
ALDEL FINL II INC
$4M394K4.1%
04
G3303U112
ARES ACQUISITION CORP III
$3M250K2.4%
05
G2003N105
BOLD EAGLE ACQUISITION CORP
$2M194K2.0%
06
G0509J115
ARTIUS II ACQUISITION INC
$2M198K2.0%
07
G4405D107
HENNESSY CAP INVT CORP VII
$2M198K2.0%
08
G75751100
RITHM ACQUISITION CORP
$2M198K2.0%
09
NWAX
NEW AMER ACQUISITION I CORP
$2M195K1.9%
10
G770AL103
RRE VENTURES ACQUISITION COR
$2M200K1.9%

Filing history

2026Q2Jun 30
$104M 11.0%
174 positionsView →
2026Q1Mar 31
$94M 10.6%
154 positionsView →
2025Q4Dec 31
$105M 7.8%
148 positionsView →
2025Q3Sep 30
$97M 3.8%
123 positionsView →
2025Q2Jun 30
$101M 6.1%
120 positionsLocked
2025Q1Mar 31
$95M 0.9%
86 positionsLocked
2024Q4Dec 31
$94M 18.6%
84 positionsLocked
2023Q3Sep 30
$80M 2.4%
121 positionsLocked
2023Q2Jun 30
$82M 99.9%
131 positionsLocked
2023Q1Mar 31
$78.9B 100250.0%
167 positionsLocked
2022Q4Dec 31
$79M
213 positionsLocked