Arkolith/Funds/Gritstone Asset Management LLC

Gritstone Asset Management LLC

CIK 1964236
Holdings as of Jun 30, 2026·disclosed Aug 6, 2026·~37-day 13F lag·13F-HR
Active Filer

Gritstone Asset Management LLC holds a diversified book of 174 stocks worth $104.0M as of Q2 2026 (disclosed Aug 6, 2026, a ~37-day 13F lag). This quarter they opened Ares Capital Corp and trimmed Bold Eagle Acquisition Cor-A. Their largest long position is Ares Capital Corp at 8% of the equity book.

Opened
54
bought for the first time
  • Ares Capital Corp
  • Ares Acquisition Corp III
  • Rre Ventures Acquisition Cor
  • +51 more · largest first
Added to
0
already held, bought more
no adds
Trimmed
3
sold some, still holds it
Sold out
34
exited the position entirely

Concentration

Top-heavy: diversified book

Top 5 holdings
21%
Top 10 holdings
30%
Top 20 holdings
45%

Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.

Direct sector allocation

73% mapped to company sectors

Financials
70%
ETF / fund or unclassified
27%
Utilities
2%
Industrials
0%
Energy
0%
Information Technology
0%
Health Care
0%
Consumer Discretionary
0%

Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.

Biggest moves: latest quarter

Estimated $ traded · quarter-end prices, no cost basis

Bought
Trimmed / exited

Funds with the most overlap

Other tracked managers holding the same core names as Gritstone Asset Management LLC

Manager / fundShared namesTheir $ in those
Clear Street Group Inc.79 / 80$101.7M
Magnetar Financial LLC73 / 80$810.3M
Shaolin Capital Management LLC73 / 80$224.5M
PICTON MAHONEY ASSET MANAGEMENT71 / 80$323.4M
WHITEBOX ADVISORS LLC71 / 80$207.4M
Schonfeld Strategic Advisors LLC69 / 80$136.1M
TENOR CAPITAL MANAGEMENT Co., L.P.68 / 80$546.5M
MOORE CAPITAL MANAGEMENT, LP68 / 80$283.5M

Ranked by how many of Gritstone Asset Management LLC's top 80 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.

Holdings: largest first

Bars show each stock's share of the portfolio. Click a row for its position history.

174 positions
#SecurityValueShares% PortLast moveHistory
1Ares Capital Corp
COM
$8.3M447.1K
8.0%
New
New position
2Oaktree Acquisition Corp III
SHS CL A
$4.2M394.9K
4.1%
Held
3Aldel Finl II Inc
CL A
$4.2M394.2K
4.1%
Held
4Ares Acquisition Corp III
UNIT 99/99/9999
$2.5M250.0K
2.4%
New
New position
5Bold Eagle Acquisition Corp
CL A
$2.1M194.5K
2.0%
−44%
Reduced · −150K sh
6Artius II Acquisition Inc
SHS CL A
$2.1M197.7K
2.0%
Held
7Hennessy Cap Invt Corp VII
ORD SHS CL A
$2.1M197.9K
2.0%
Held
8Rithm Acquisition Corp
CL A
$2.1M197.6K
2.0%
Held
9New Amer Acquisition I Corp
COM SHS CL A
$2.0M195.0K
1.9%
Held
10Rre Ventures Acquisition Cor
CL A ORD SHS
$2.0M200.0K
1.9%
New
New position
11Infinite Eagle Acquisition C
CL A
$1.8M175.0K
1.7%
New
New position
12Lafayette Digital Acquisitio
ORD CLASS A
$1.7M175.0K
1.7%
New
New position
13Launch Two Acquisition Corp.
ORD SHS CL A
$1.6M146.8K
1.5%
Held
14K&F Growth Acquisition Corp
SHS CL A
$1.6M148.7K
1.5%
Held
15Talon Cap Corp
ORD SHS CL A
$1.5M150.0K
1.5%
Held
16Leapfrog Acquisition Corp
CL A ORD SHS
$1.5M150.0K
1.4%
Held
17Stellar V Cap Corp
SHS CL A
$1.4M133.8K
1.4%
Held
18Newhold Invt Corp III
ORD SHS CL A
$1.3M123.5K
1.3%
Held
19Highview Merger Corp
ORD SH CL A
$1.3M127.0K
1.2%
Held
20Solarius Capital Acqu Corp
SHS CL A
$1.3M125.0K
1.2%
Held
21Colombier Acquisition Corp I
ORD SHS CL A
$1.3M125.0K
1.2%
New
New position
22Oxley Bridge Acq Ltd
USD CL A ORD SHS
$1.3M124.3K
1.2%
Held
23Gores Holdings XI Inc
UNIT 06/24/2031
$1.3M125.0K
1.2%
New
New position
24Otg Acquisition Corp. I
ORD CL A
$1.3M125.0K
1.2%
Held
25Silicon Vy Acquisition Corp
CL A
$1.3M125.0K
1.2%
New
New position
26Alussa Energy Acquisit Corp
ORD SHS CL A
$1.3M125.0K
1.2%
Held
27Ampercap Acquisition Co
UNIT 05/22/2031
$1.3M125.0K
1.2%
New
New position
28Launchpad Cadenza Acqu Corp
USD CL A ORD SHS
$1.3M125.0K
1.2%
New
New position
29Bluerock Acquisition Corp
USD CL A ORD SHS
$1.2M125.0K
1.2%
Held
30Kpet Ultra Paceline Corp
UNIT 99/99/9999
$1.2M121.3K
1.2%
Held
31Aldabra 4 Lqdty Opp Veh Inc
CL A ORD SHS
$1.2M118.2K
1.1%
New
New position
32Galata Acquisition Corp II
ORD SHS CL A
$1.1M106.3K
1.0%
Held
33Berto Acquisition Corp
ORD SHS
$1.0M98.9K
1.0%
Held
34Gesher Acquisition Corp. II
USD CL A ORD SHS
$1.0M98.8K
1.0%
Held
35Titan Acquisition Corp
CL A
$1.0M98.8K
1.0%
Held
36Sizzle Acquisition Corp. II
USD CL A ORD SHS
$1.0M99.0K
1.0%
Held
37Jena Acquisition Corp II
USD CL A ORD SHS
$1.0M98.9K
1.0%
Held
38Republic Digital Acquisition
USD CL A ORD SHS
$1.0M98.8K
1.0%
Held
39Wen Acquisition Corp
COM CL A
$1.0M98.9K
1.0%
Held
40Irenic Acquisition Corp
UNIT 04/10/2031
$1.0M100.0K
1.0%
New
New position
41Kensington Cap Acquisition
UNIT 99/99/9999
$1.0M100.0K
1.0%
New
New position
42Daedalus SPL Acquisition Cor
USD CL A ORD SHS
$1.0M100.0K
1.0%
Held
43Acp Holdings Acquisition Cor
UNIT 03/30/2031
$1.0M100.0K
1.0%
New
New position
44Eqv Ventures Ac Corp. II
ORD SHS CL A
$1.0M98.9K
1.0%
Held
45Snow Rothschild Acquisition
UNIT 05/22/2031
$1.0M100.0K
1.0%
New
New position
46Activate Energy Acquisit Cor
CL A ORD SHS
$1.0M100.0K
1.0%
Held
47Cartesian Growth Corp IV
UNIT 06/08/2031
$1.0M100.0K
1.0%
New
New position
48Energy Transition SPL Opport
UNIT 99/99/9999
$1.0M100.0K
1.0%
New
New position
49Krakacquisition Corporation
CL A ORD SHS
$1.0M100.0K
1.0%
New
New position
50Patriot Acquisition Corp
UNIT 05/11/2031
$999K100.0K
1.0%
New
New position
Showing 50 of 174 positions
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Filing history

As-of date vs the date the SEC received each filing

QuarterAs ofFiledPositionsValueForm
Q2 2026Jun 30, 2026Aug 6, 2026174$104.0M13F-HR
Q1 2026Mar 31, 2026May 5, 2026154$93.6M13F-HR
Q4 2025Dec 31, 2025Jan 23, 2026148$104.8M13F-HR
Q3 2025Sep 30, 2025Nov 4, 2025124$97.2M13F-HR

Data source

Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.