StoneBridge Acquisition II Corp
APACU- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002043630
No open-market purchases or sales by StoneBridge Acquisition II Corp insiders were filed in the last 90 days; 7 institutions reported holding it in 13F filings for Q2 2026, worth $3.36M in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in StoneBridge Acquisition II Corp as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 11
- −19 vs. Q3 2025
- Shares held
- 1.21M
- −3.92M (−76.4%) vs. Q3 2025
- Total value
- $12.2M
- −$39.0M (−76.2%) vs. Q3 2025
- New holders
- 2
- 3 more added
- Sold out
- 21
- 3 more reduced
2 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting APACU on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 7 | $3.36M |
| Q1 2026 | 6 | $3.14M |
| Q4 2025 | 11 | $12.2M |
| Q3 2025 | 32 | $53.3M |
| Q2 2025 | 0 | $0 |
| Q1 2025 | 0 | $0 |
| Q4 2024 | 0 | $0 |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding StoneBridge Acquisition II Corp; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Rivernorth Capital Management, LLC | 494,517 | $4.96M | 0.23% | −483−0.1% | Reduced |
| Mangrove Partners | 225,000 | $2.26M | 0.18% | +100,000+80.0% | Added |
| Toronto Dominion Bank | 122,316 | $1.23M | 0.00% | +22,316+22.3% | Added |
| Crossingbridge Advisors, LLC | 75,000 | $753.0K | 0.21% | −50,000−40.0% | Reduced |
| Yakira Capital Management, Inc. | 65,000 | $652.6K | 0.22% | 00.0% | Unchanged |
| Quarry LP | 60,000 | $603.6K | 0.10% | 00.0% | Unchanged |
| Sandia Investment Management LP | 60,000 | $602.4K | 1.50% | 00.0% | Unchanged |
| Heights Capital Management, Inc | 50,500 | $509.0K | 0.19% | +500+1.0% | Added |
| Lineage Point Capital LP | 39,800 | $400.4K | 0.15% | +39,800 | New |
| Citadel Advisors LLC | 14,310 | $144.2K | 0.00% | +14,310 | New |
| Clear Street Group Inc. | 6,772 | $68.0K | 0.00% | −197,416−96.7% | Reduced |
| Glazer Capital, LLC | 0 | $0 | 0.00% | −400,000−100.0% | Sold out |
| Decagon Asset Management LLP | 0 | $0 | 0.00% | −396,557−100.0% | Sold out |
| CNH Partners LLC | 0 | $0 | 0.00% | −375,000−100.0% | Sold out |
| Shaolin Capital Management LLC | 0 | $0 | 0.00% | −370,000−100.0% | Sold out |
| Highbridge Capital Management LLC | 0 | $0 | 0.00% | −365,000−100.0% | Sold out |
| Meteora Capital, LLC | 0 | $0 | 0.00% | −330,499−100.0% | Sold out |
| Aristeia Capital LLC | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| Wolverine Asset Management LLC | 0 | $0 | 0.00% | −173,730−100.0% | Sold out |
| Radcliffe Capital Management, L.P. | 0 | $0 | 0.00% | −160,000−100.0% | Sold out |
| Cable Car Capital LLC | 0 | $0 | 0.00% | −150,000−100.0% | Sold out |
| Polar Asset Management Partners Inc. | 0 | $0 | 0.00% | −150,000−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −137,500−100.0% | Sold out |
| StoneX Group Inc. | 0 | $0 | 0.00% | −122,200−100.0% | Sold out |
| CSS LLC | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| Mizuho Securities USA LLC | 0 | $0 | 0.00% | −75,000−100.0% | Sold out |
| Berkley W R Corp | 0 | $0 | 0.00% | −64,486−100.0% | Sold out |
| Warberg Asset Management LLC | 0 | $0 | 0.00% | −27,500−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −22,000−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −16,800−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −12,000−100.0% | Sold out |
| Atw Spac Management LLC | – | – | – | – | Not filed |
| Maso Capital Partners Ltd | – | – | – | – | Not filed |