GRITSTONE ASSET MANAGEMENT LLC — 13F Holdings & Portfolio
CIK 1964236 · latest 13F-HR filed 2026-08-06
GRITSTONE ASSET MANAGEMENT LLC manages $104.0M in 13F-reported U.S. long-equity assets across 174 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are ARCC (7.97%), OACC (4.06%), ALDF (4.05%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 54 new positions and exited 34; 50 existing positions rose in reported value and 14 fell.
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.
Long-equity book
Distinct positions
Filed 2026-08-06
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q1 26 → Q2 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
3 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 30.3%Cumulative share of the portfolio held in the largest N positions.
SUITE 200
BETHESDA, MD 20814
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| Cressall, Justin, George De Orellana Control | MANAGING MEMBER | 25–50% | Individual |
| MCHALE, THOMAS, ALBERT Control | MANAGING MEMBER | 25–50% | Individual |
| SKIBO, NICHOLAS, BURTON Control | MANAGING MEMBER & CCO | 25–50% | Individual |
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- NEWHOLD INVT CORP III$104.4K +412.2%
- PRESIDIO PRODTN CO$76.5K +70.4%
- NEWHOLD INVT CORP III$64.2K +5.0%
- TRANSLATIONAL DEV ACQUISITIO$54.6K +1087.5%
- AMERICAN EXCEPTIONALISM ACQU$49.5K +9.1%
Top Trims
- BOLD EAGLE ACQUISITION CORP-$1.6M -42.9%
- FACT II ACQUISITION CORP-$784.2K -74.7%
- ARTIUS II ACQUISITION INC-$18.2K -30.4%
- ALDEL FINL II INC-$9.9K -14.4%
- K&F GROWTH ACQUISITION CORP-$8.2K -30.4%
New Positions
- ARES CAPITAL CORP$8.3M
- ARES ACQUISITION CORP III$2.5M
- RRE VENTURES ACQUISITION COR$2.0M
- INFINITE EAGLE ACQUISITION C$1.8M
- LAFAYETTE DIGITAL ACQUISITIO$1.7M
Exited Positions
- LIONHEART HOLDINGS$3.1M
- CENTURION ACQUISITION CORP$3.1M
- INFINITE EAGLE ACQUISITION C$3.0M
- GRAF GLOBAL CORP$1.9M
- LAFAYETTE DIGITAL ACQUISITIO$1.7M
GRITSTONE ASSET MANAGEMENT LLC Holdings (2026-06-30)
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 | ARES CAPITAL CORP | ARCC | 04010L103 | $8.3M | 7.97% | 447,088 | SH |
| 2 | OAKTREE ACQUISITION CORP III | OACC | G6717R104 | $4.2M | 4.06% | 394,908 | SH |
| 3 | ALDEL FINL II INC | ALDF | G01558108 | $4.2M | 4.05% | 394,214 | SH |
| 4 | ARES ACQUISITION CORP III | AAC.U | G3303U112 | $2.5M | 2.42% | 250,000 | SH |
| 5 | BOLD EAGLE ACQUISITION CORP | BEAG | G2003N105 | $2.1M | 2.00% | 194,488 | SH |
| 6 | ARTIUS II ACQUISITION INC | AACB | G0509J115 | $2.1M | 1.99% | 197,656 | SH |
| 7 | HENNESSY CAP INVT CORP VII | HVII | G4405D107 | $2.1M | 1.99% | 197,899 | SH |
| 8 | RITHM ACQUISITION CORP | RAC | G75751100 | $2.1M | 1.99% | 197,598 | SH |
| 9 | NEW AMER ACQUISITION I CORP | NWAX | 023634108 | $2.0M | 1.90% | 195,000 | SH |
| 10 | RRE VENTURES ACQUISITION COR | RREV | G770AL103 | $2.0M | 1.90% | 200,000 | SH |
| 11 | INFINITE EAGLE ACQUISITION C | IEAG | G4802J103 | $1.8M | 1.70% | 175,000 | SH |
| 12 | LAFAYETTE DIGITAL ACQUISITIO | ZKP | G5345D107 | $1.7M | 1.68% | 175,000 | SH |
| 13 | LAUNCH TWO ACQUISITION CORP. | LPBB | G5S87A105 | $1.6M | 1.51% | 146,820 | SH |
| 14 | K&F GROWTH ACQUISITION CORP | KFII | G52258111 | $1.6M | 1.51% | 148,743 | SH |
| 15 | TALON CAP CORP | TLNC | G86652107 | $1.5M | 1.49% | 150,000 | SH |
| 16 | LEAPFROG ACQUISITION CORP | LFAC | G5414D103 | $1.5M | 1.44% | 150,000 | SH |
| 17 | STELLAR V CAP CORP | SVCC | G8475V103 | $1.4M | 1.36% | 133,770 | SH |
| 18 | NEWHOLD INVT CORP III | NHIC | G6486E102 | $1.3M | 1.29% | 123,541 | SH |
| 19 | HIGHVIEW MERGER CORP | HVMC | G4569C101 | $1.3M | 1.24% | 127,021 | SH |
| 20 | SOLARIUS CAPITAL ACQU CORP | SOCA | G82617104 | $1.3M | 1.23% | 125,000 | SH |
| 21 | COLOMBIER ACQUISITION CORP I | CLBR | G2284A103 | $1.3M | 1.23% | 125,000 | SH |
| 22 | OXLEY BRIDGE ACQ LTD | OBA | G6858G107 | $1.3M | 1.22% | 124,293 | SH |
| 23 | GORES HOLDINGS XI INC | GHXIU | G40008123 | $1.3M | 1.22% | 125,000 | SH |
| 24 | OTG ACQUISITION CORP. I | OTGA | G6791A100 | $1.3M | 1.22% | 125,000 | SH |
| 25 | SILICON VY ACQUISITION CORP | SVAQ | G81306121 | $1.3M | 1.21% | 125,000 | SH |
| 26 | ALUSSA ENERGY ACQUISIT CORP | ALUB | G0233J100 | $1.3M | 1.21% | 125,000 | SH |
| 27 | AMPERCAP ACQUISITION CO | APMCU | G0344N123 | $1.3M | 1.21% | 124,988 | SH |
| 28 | LAUNCHPAD CADENZA ACQU CORP | LPCV | G6001S107 | $1.2M | 1.20% | 125,000 | SH |
| 29 | BLUEROCK ACQUISITION CORP | BLRK | G1352R105 | $1.2M | 1.20% | 125,000 | SH |
| 30 | KPET ULTRA PACELINE CORP | KPET.U | G53157122 | $1.2M | 1.18% | 121,280 | SH |
| 31 | ALDABRA 4 LQDTY OPP VEH INC | ALOV | G01900102 | $1.2M | 1.13% | 118,214 | SH |
| 32 | GALATA ACQUISITION CORP II | LATA | G3R25N108 | $1.1M | 1.03% | 106,256 | SH |
| 33 | BERTO ACQUISITION CORP | TACO | G1051H101 | $1.0M | 1.00% | 98,853 | SH |
| 34 | GESHER ACQUISITION CORP. II | GSHR | G3852D107 | $1.0M | 0.99% | 98,832 | SH |
| 35 | TITAN ACQUISITION CORP | TACH | G8901A103 | $1.0M | 0.99% | 98,764 | SH |
| 36 | SIZZLE ACQUISITION CORP. II | SZZL | G8193F109 | $1.0M | 0.99% | 98,992 | SH |
| 37 | JENA ACQUISITION CORP II | JENA | G5093B105 | $1.0M | 0.99% | 98,857 | SH |
| 38 | REPUBLIC DIGITAL ACQUISITION | RDAG | G7515A103 | $1.0M | 0.98% | 98,850 | SH |
| 39 | WEN ACQUISITION CORP | WENN | G9R39C103 | $1.0M | 0.98% | 98,857 | SH |
| 40 | IRENIC ACQUISITION CORP | IACQU | G4939F115 | $1.0M | 0.98% | 100,000 | SH |
| 41 | KENSINGTON CAP ACQUISITION | KCA.U | G5235S131 | $1.0M | 0.98% | 100,000 | SH |
| 42 | DAEDALUS SPL ACQUISITION COR | DSAC | G2616C108 | $1.0M | 0.97% | 100,000 | SH |
| 43 | ACP HOLDINGS ACQUISITION COR | ACGCU | G0113G127 | $1.0M | 0.97% | 100,000 | SH |
| 44 | EQV VENTURES AC CORP. II | EVAC | G3106Q102 | $1.0M | 0.97% | 98,865 | SH |
| 45 | SNOW ROTHSCHILD ACQUISITION | ISNRU | G8251A125 | $1.0M | 0.96% | 100,000 | SH |
| 46 | ACTIVATE ENERGY ACQUISIT COR | AEAQ | G0081J103 | $1.0M | 0.96% | 100,000 | SH |
| 47 | CARTESIAN GROWTH CORP IV | CGCFU | G19316127 | $1.0M | 0.96% | 100,000 | SH |
| 48 | ENERGY TRANSITION SPL OPPORT | ETSS.U | G23017125 | $1.0M | 0.96% | 100,000 | SH |
| 49 | KRAKACQUISITION CORPORATION | KRAQ | G5315G106 | $1.0M | 0.96% | 100,000 | SH |
| 50 | PATRIOT ACQUISITION CORP | PTACU | G6951A122 | $999.0K | 0.96% | 100,000 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-06 | $104.0M | 174 | 0001705819-26-000051 |
| 2026-03-31 | 2026-05-05 | $93.6M | 154 | 0001705819-26-000034 |
| 2025-12-31 | 2026-01-23 | $104.8M | 148 | 0001705819-26-000012 |
SUITE 200
BETHESDA, MD 20814