Who owns StoneBridge Acquisition (APAC)
Which tracked institutional funds hold APAC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See APAC company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-14). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on APAC is one-sided between 2026-Q1 and 2026-Q2: 1 added or opened and 3 trimmed or exited — on balance reducing.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
APAC’s largest tracked holder by dollar value, METEORA CAPITAL, LLC, sizes it at 0.6% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.5pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in APAC divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 32 tracked filers holding APAC, 4 increased or opened the position and 8 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in APAC between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
Full exits 3
- Decagon Asset Management LLP$44M
- GLAZER CAPITAL, LLC$4M
- TORONTO DOMINION BANK$1M
Largest adds
- Karpus Management, Inc.$382K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| MIZUHO SECURITIES USA LLC | 552,055 | $5M | 3.1% | 2026-Q2 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC trimmed | 494,133 | $5M | 2.9% | 2026-Q2 |
| Karpus Management, Inc. added | 465,125 | $5M | 2.7% | 2026-Q2 |
| WOLVERINE ASSET MANAGEMENT LLC trimmed | 397,863 | $4M | 2.3% | 2026-Q2 |
| Clear Street Group Inc. added | 318,923 | $3M | 1.9% | 2026-Q2 |
| AQR Arbitrage LLC | 286,849 | $3M | 1.7% | 2026-Q2 |
| Logan Stone Capital, LLC | 252,000 | $3M | 1.5% | 2026-Q2 |
| MANGROVE PARTNERS IM, LLC | 225,000 | $2M | 1.3% | 2026-Q2 |
| ARISTEIA CAPITAL, L.L.C. | 200,000 | $2M | 1.2% | 2026-Q2 |
| Verition Fund Management LLC | 200,000 | $2M | 1.2% | 2026-Q2 |
| Shaolin Capital Management LLC trimmed | 176,860 | $2M | 1.0% | 2026-Q2 |
| Radcliffe Capital Management, L.P. | 160,000 | $2M | 0.9% | 2026-Q2 |
| Polar Asset Management Partners Inc. | 150,000 | $2M | 0.9% | 2026-Q2 |
| Cable Car Capital, LP | 150,000 | $2M | 0.9% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC | 137,500 | $1M | 0.8% | 2026-Q2 |
| SONA ASSET MANAGEMENT (US) LLC | 117,096 | $1M | 0.7% | 2026-Q2 |
| BERKLEY W R CORP | 113,358 | $1M | 0.7% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP | 90,625 | $922K | 0.5% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS | 90,150 | $917K | 0.5% | 2026-Q2 |
| Westchester Capital Management, LLC | 80,000 | $814K | 0.5% | 2026-Q2 |
| Crossingbridge Advisors, LLC | 75,000 | $763K | 0.4% | 2026-Q2 |
| Yakira Capital Management, Inc. | 63,660 | $661K | 0.4% | 2026-Q2 |
| Quarry LP | 60,000 | $623K | 0.4% | 2026-Q2 |
| RLH Capital LLC | 57,500 | $585K | 0.3% | 2026-Q2 |
| HEIGHTS CAPITAL MANAGEMENT, INC | 50,500 | $514K | 0.3% | 2026-Q2 |
| Lineage Point Capital LP | 39,800 | $413K | 0.2% | 2026-Q2 |
| Warberg Asset Management LLC trimmed | 23,700 | $241K | 0.1% | 2026-Q2 |
| ABC ARBITRAGE SA | 20,000 | $203K | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 11,843 | $123K | 0.1% | 2026-Q2 |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | 616,167 | $99K | 0.1% | 2026-Q2 |
| UBS Group AG added | 52 | $540 | 0.0% | 2026-Q2 |
| MORGAN STANLEY trimmed | 28 | $285 | 0.0% | 2026-Q2 |
| Decagon Asset Management LLP added | 367,803 | $44M | 25.4% | 2026-Q1 stale (1 quarter behind) |
| GLAZER CAPITAL, LLC trimmed | 385,066 | $4M | 2.2% | 2026-Q1 stale (1 quarter behind) |
| TORONTO DOMINION BANK trimmed | 121,791 | $1M | 0.7% | 2026-Q1 stale (1 quarter behind) |
| Virtu Financial LLC added | 33,601 | $338K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| JPMORGAN CHASE & CO added | 616,167 | $74K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| METEORA CAPITAL, LLC added | 567,912 | $68M | 39.0% | 2025-Q4 stale (2 quarters behind) |
| Sandia Investment Management LP | 60,000 | $602K | 0.3% | 2025-Q4 stale (2 quarters behind) |
| CITADEL ADVISORS LLC new | 14,310 | $144K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| ATW SPAC MANAGEMENT LLC new | 137,500 | $1M | 0.8% | 2025-Q3 stale (3 quarters behind) |
| StoneX Group Inc. new | 122,200 | $1M | 0.7% | 2025-Q3 stale (3 quarters behind) |
| CSS LLC/IL new | 100,000 | $997K | 0.6% | 2025-Q3 stale (3 quarters behind) |
| MASO CAPITAL PARTNERS Ltd new | 74,900 | $747K | 0.4% | 2025-Q3 stale (3 quarters behind) |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.