Gritstone Asset Management LLC reported 97 positions worth $71.90M for the quarter ended Sep 30, 2026, down 7.1% on the prior quarter. It opened 1 new position, added to 1, trimmed 3 and exited 9. Its largest holding is Ares Capital Corp at 11.9% of the portfolio.
Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.
Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.
How many positions were opened, added to, trimmed or closed each quarter.
Share of reported value in each sector at every quarter end.
| Holding | Change | Change % | Trade Value | Weight |
|---|---|---|---|---|
| OACC Oaktree Acquisition Corp. III Life Sciences | -200.0K | -50.6% | $2.16M | 2.92% |
| BEAG Bold Eagle Acquisition Corp. | -194.5K | -100.0% | $2.08M | Exited |
| LPBB Launch Two Acquisition Corp. | -146.8K | -100.0% | $1.57M | Exited |
| BRKHU Burtech Acquisition Corp II | -87.2K | -100.0% | $874.70K | Exited |
| NHICW NewHold Investment Corp III - Warrants | -61.8K | -100.0% | $129.72K | Exited |
| HVIIR Hennessy Capital Investment Co Rights | -197.9K | -100.0% | $76.98K | Exited |
| AACBR Artius II Acquisition Inc Rights | -197.7K | -100.0% | $41.51K | Exited |
| IPCXR Inflection Point Acquisition Corp Rights | -89.0K | -100.0% | $40.04K | Exited |
| SBXD/WS Silverbox Corp IV - Warrants | -73.4K | -100.0% | $11.75K | Exited |
| LPBBW Launch Two Acquisition Corp. | -57.5K | -78.4% | $7.56K | <0.01% |
| Holding | Shares | Trade Value | Weight |
|---|---|---|---|
| ACGC ACP Holdings Acquisition Corp. | +100.0K | $1.01M | 1.4% |
| Holding | Shares Sold | Trade Value | Prior Weight |
|---|---|---|---|
| BEAG Bold Eagle Acquisition Corp. | -194.5K | $2.08M | 2.68% |
| LPBB Launch Two Acquisition Corp. | -146.8K | $1.57M | 2.03% |
| BRKHU Burtech Acquisition Corp II | -87.2K | $874.70K | 1.13% |
| NHICW NewHold Investment Corp III - Warrants | -61.8K | $129.72K | 0.168% |
| HVIIR Hennessy Capital Investment Co Rights | -197.9K | $76.98K | 0.099% |
| AACBR Artius II Acquisition Inc Rights | -197.7K | $41.51K | 0.054% |
| IPCXR Inflection Point Acquisition Corp Rights | -89.0K | $40.04K | 0.052% |
| SBXD/WS Silverbox Corp IV - Warrants | -73.4K | $11.75K | 0.015% |
| JACS-R Jackson Acquisition Company II Right | -39.3K | $5.51K | <0.01% |
| # | Activity | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | ARCC Ares Capital Corp | Financial Services | 447.2K | $8.54M | 11.88% | +115 | +0.0% | Added | 0.06% |
| 2 | ALDF Aldel Financial II Inc. | Financial Services | 394.2K | $4.27M | 5.93% | 0 | 0.0% | Unchanged | 1.07% |
| 3 | OACC Oaktree Acquisition Corp. III Life Sciences | Financial Services | 194.9K | $2.10M | 2.92% | -200.0K | -50.6% | Reduced | 0.65% |
| 4 | RAC Rithm Acquisition Corp. | Financial Services | 197.6K | $2.08M | 2.9% | 0 | 0.0% | Unchanged | 0.67% |
| 5 | RREV RRE Ventures Acquisition Corp. | Financial Services | 200.0K | $1.98M | 2.76% | 0 | 0.0% | Unchanged | 0.6% |
| 6 | NWAX New America Acquisition I Corp. | Financial Services | 195.0K | $1.96M | 2.73% | 0 | 0.0% | Unchanged | 0.39% |
| 7 | ZKP Lafayette Digital Acquisition Corp. I | Financial Services | 175.0K | $1.76M | 2.44% | 0 | 0.0% | Unchanged | 0.59% |
| 8 | KFII K&F Growth Acquisition Corp. Ii | Financial Services | 148.7K | $1.59M | 2.21% | 0 | 0.0% | Unchanged | 0.5% |
| 9 | TLNC Talon Capital Corp. | Financial Services | 150.0K | $1.53M | 2.13% | 0 | 0.0% | Unchanged | 0.44% |
| 10 | LFAC Leapfrog Acquisition Corp | Financial Services | 150.0K | $1.51M | 2.1% | 0 | 0.0% | Unchanged | 0.76% |
| 11 | SVCC Stellar V Capital Corp. (Cayman Islands) | Financial Services | 133.8K | $1.43M | 1.99% | 0 | 0.0% | Unchanged | 0.62% |
| 12 | HVMC Highview Merger Corp. | Financial Services | 127.0K | $1.30M | 1.81% | 0 | 0.0% | Unchanged | 0.43% |
| 13 | SOCA Solarius Capital Acquisition Corp. | Financial Services | 125.0K | $1.29M | 1.8% | 0 | 0.0% | Unchanged | 0.27% |
| 14 | OBA Oxley Bridge Acquisition Ltd | Financial Services | 124.3K | $1.29M | 1.79% | 0 | 0.0% | Unchanged | 0.39% |
| 15 | OTGA OTG Acquisition Corp. I | Financial Services | 125.0K | $1.28M | 1.79% | 0 | 0.0% | Unchanged | 0.53% |
Tip. Select a row to see that position’s full history at Gritstone Asset Management.
As of its Q3 2026 13F filing, Gritstone Asset Management LLC’s five largest positions were Ares Capital Corp (ARCC) at 11.9%, Aldel Financial II Inc. (ALDF) at 5.9%, Oaktree Acquisition Corp. III Life Sciences (OACC) at 2.9%, Rithm Acquisition Corp. (RAC) at 2.9%, RRE Ventures Acquisition Corp. (RREV) at 2.8% of the reported portfolio.
Gritstone Asset Management LLC reported a 13F portfolio worth $71.90M across 97 positions for Q3 2026. That is down 7.1% from the previous quarter.
Its largest purchases by value were ACP Holdings Acquisition Corp. ($1.01M), Ares Capital Corp ($2.20K). It opened 1 new positions.
Its largest sales by value were Oaktree Acquisition Corp. III Life Sciences ($2.16M), Bold Eagle Acquisition Corp. ($2.08M), Launch Two Acquisition Corp. ($1.57M). It exited 9 positions entirely.
From the Form 13F-HR reports Gritstone Asset Management LLC files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.
13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.