Jackson Acquisition Co II (JACS) — Institutional Holders, Q2 2026
56 institutional investment managers reported a JACS position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $251.3M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
JACS in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- MIZUHO SECURITIES USAAdded · +905,335 sh+$4.9M
- HIGHBRIDGE CAPITAL MANAGEMENTAdded · +785,811 sh+$4.2M
- BERKLEY W RAdded · +497,474 sh+$2.7M
- PERISCOPE CAPITALAdded · +50,000 sh+$269.5K
- StoneX GroupNew · +15,017 sh+$80.9K
Biggest sellers
- METEORA CAPITALTrimmed · -691,632 sh-$3.7M
- Bulldog Investors, LLPTrimmed · -219,104 sh-$1.2M
- Shaolin Capital ManagementTrimmed · -140,783 sh-$758.8K
- CSSSold out · -55,424 sh-$298.7K
- Westchester Capital ManagementTrimmed · -46,250 sh-$249.3K
JACS 13F holders ranked 1–56 of 56
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | MIZUHO SECURITIES USA#1 · 1,620,109 sh | 1,620,109 | $17.1M | 0.17% | +126.7% |
| 2 | Hudson Bay Capital Management#2 · 2,470,505 sh | 2,470,505 | $16.3M | 0.04% | 0.0% |
| 3 | GLAZER CAPITAL#3 · 1,338,236 sh | 1,338,236 | $12.8M | 0.31% | +0.2% |
| 4 | Westchester Capital Management#4 · 1,989,950 sh | 1,989,950 | $12.7M | 0.62% | -2.3% |
| 5 | AQR Arbitrage#5 · 2,377,258 sh | 2,377,258 | $12.6M | 0.18% | +0.2% |
| 6 | LINDEN ADVISORS#6 · 2,450,000 sh | 2,450,000 | $12.5M | 0.06% | 0.0% |
| 7 | D. E. Shaw#7 · 1,388,500 sh | 1,388,500 | $12.1M | <0.01% | 0.0% |
| 8 | WOLVERINE ASSET MANAGEMENT#8 · 1,048,131 sh | 1,048,131 | $11.2M | 0.10% | -0.2% |
| 9 | Polar Asset Management Partners#9 · 2,550,000 sh | 2,550,000 | $11.1M | 0.18% | 0.0% |
| 10 | BERKLEY W R#10 · 927,836 sh | 927,836 | $9.9M | 0.47% | +115.6% |
| 11 | HIGHBRIDGE CAPITAL MANAGEMENT#11 · 1,135,210 sh | 1,135,210 | $9.3M | 0.23% | +224.9% |
| 12 | HEIGHTS CAPITAL MANAGEMENT#12 · 1,400,000 sh | 1,400,000 | $7.5M | 1.74% | 0.0% |
| 13 | Radcliffe Capital Management, L.P.#13 · 675,001 sh | 675,001 | $7.2M | 0.55% | 0.0% |
| 14 | Mint Tower Capital Management B.V.#14 · 1,300,000 sh | 1,300,000 | $7.0M | 0.80% | 0.0% |
| 15 | Magnetar Financial#15 · 1,200,000 sh | 1,200,000 | $6.5M | 0.06% | 0.0% |
| 16 | TENOR CAPITAL MANAGEMENT , L.P.#16 · 1,000,000 sh | 1,000,000 | $6.4M | 0.09% | 0.0% |
| 17 | First Capital Management L.P.#17 · 562,500 sh | 562,500 | $6.0M | 0.35% | 0.0% |
| 18 | METEORA CAPITAL#18 · 1,171,800 sh | 1,171,800 | $5.7M | 0.47% | -37.1% |
| 19 | Calamos Advisors#19 · 500,000 sh | 500,000 | $5.6M | 0.02% | 0.0% |
| 20 | TWO SIGMA INVESTMENTS#20 · 474,821 sh | 474,821 | $5.1M | <0.01% | 0.0% |
| 21 | LMR Partners LLP#21 · 887,502 sh | 887,502 | $4.8M | 0.02% | 0.0% |
| 22 | PICTON MAHONEY ASSET MANAGEMENT#22 · 800,000 sh | 800,000 | $4.3M | 0.03% | 0.0% |
| 23 | Wealthspring Capital#23 · 814,946 sh | 814,946 | $4.3M | 0.96% | -0.5% |
| 24 | Verition Fund Management#24 · 1,071,504 sh | 1,071,504 | $4.1M | <0.01% | +0.5% |
| 25 | PERISCOPE CAPITAL#25 · 650,000 sh | 650,000 | $4.0M | 0.35% | +8.3% |
| 26 | RIVERNORTH CAPITAL MANAGEMENT#26 · 759,073 sh | 759,073 | $3.9M | 0.19% | 0.0% |
| 27 | GOLDMAN SACHS GROUP#27 · 360,208 sh | 360,208 | $3.8M | <0.01% | 0.0% |
| 28 | Crossingbridge Advisors#28 · 312,381 sh | 312,381 | $3.3M | 0.59% | -4.6% |
| 29 | COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS#29 · 800,000 sh | 800,000 | $3.3M | 0.02% | 0.0% |
| 30 | MANGROVE PARTNERS IM#30 · 280,470 sh | 280,470 | $3.0M | 0.20% | 0.0% |
| 31 | GABELLI & INVESTMENT ADVISERS#31 · 628,900 sh | 628,900 | $2.4M | 0.35% | 0.0% |
| 32 | SONA ASSET MANAGEMENT (US)#32 · 206,468 sh | 206,468 | $2.2M | 0.05% | 0.0% |
| 33 | Bulldog Investors, LLP#33 · 337,577 sh | 337,577 | $2.1M | 0.45% | -39.4% |
| 34 | WHITEBOX ADVISORS#34 · 350,000 sh | 350,000 | $1.9M | 0.02% | 0.0% |
| 35 | Yakira Capital Management#35 · 265,574 sh | 265,574 | $1.6M | 0.45% | 0.0% |
| 36 | Shaolin Capital Management#36 · 823,157 sh | 823,157 | $1.5M | 0.07% | -14.6% |
| 37 | GABELLI FUNDS#37 · 408,780 sh | 408,780 | $1.4M | <0.01% | -5.8% |
| 38 | O'Connor Alternative Investments#38 · 100,000 sh | 100,000 | $1.1M | 0.08% | 0.0% |
| 39 | BNP PARIBAS FINANCIAL MARKETS#39 · 410,437 sh | 410,437 | $590.3K | <0.01% | 0.0% |
| 40 | JPMORGAN CHASE#40 · 50,000 sh | 50,000 | $532.5K | 0.00% | 0.0% |
| 41 | READYSTATE ASSET MANAGEMENT#41 · 50,000 sh | 50,000 | $532.0K | <0.01% | 0.0% |
| 42 | HGC Investment Management#42 · 1,450,700 sh | 1,450,700 | $465.6K | 0.09% | 0.0% |
| 43 | Harraden Circle Investments#43 · 3,118,861 sh | 3,118,861 | $437.3K | 0.06% | 0.0% |
| 44 | Schonfeld Strategic Advisors#44 · 33,259 sh | 33,259 | $353.9K | <0.01% | +10.9% |
| 45 | Clear Street Group#45 · 277,579 sh | 277,579 | $235.4K | <0.01% | -0.1% |
| 46 | StoneX Group#46 · 15,017 sh | 15,017 | $159.8K | <0.01% | New |
| 47 | ABC ARBITRAGE SA#47 · 15,000 sh | 15,000 | $159.6K | — | 0.0% |
| 48 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#48 · 12,640 sh | 12,640 | $134.5K | 0.00% | New |
| 49 | HEALTHCARE OF ONTARIO PENSION PLAN FUND#49 · 650,000 sh | 650,000 | $91.1K | <0.01% | 0.0% |
| 50 | MMCAP International SPC#50 · 500,000 sh | 500,000 | $70.1K | <0.01% | 0.0% |
| 51 | SRS Capital Advisors#51 · 5,500 sh | 5,500 | $29.6K | <0.01% | New |
| 52 | TORONTO DOMINION BANK#52 · 200,000 sh | 200,000 | $28.0K | 0.00% | -66.7% |
| 53 | Sculptor Capital#53 · 161,700 sh | 161,700 | $25.1K | <0.01% | 0.0% |
| 54 | K2 PRINCIPAL FUND, L.P.#54 · 136,000 sh | 136,000 | $19.0K | <0.01% | 0.0% |
| 55 | DLD Asset Management#55 · 82,200 sh | 82,200 | $11.5K | <0.01% | 0.0% |
| 56 | GRITSTONE ASSET MANAGEMENT#56 · 39,300 sh | 39,300 | $5.5K | — | 0.0% |
Funds that sold out of JACS in Q2 2026 (2)
Held JACS at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| DELTEC ASSET MANAGEMENT40,000 sh | 40,000 | $423.6K |
| CSS55,424 sh | 55,424 | $398.3K |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.