JATT II Acquisition Corp. (JATT) — Institutional Holders, Q2 2026
25 institutional investment managers reported a JATT position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $61.7M. 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.
JATT 13F holders ranked 1–25 of 25
| # | Institution | Shares | Value | % of portfolio | QoQShares vs prior Q |
|---|---|---|---|---|---|
| 1 | BALYASNY ASSET MANAGEMENT L.P.#1 · 500,000 sh | 500,000 | $5.7M | <0.01% | — |
| 2 | GREAT POINT PARTNERS#2 · 500,000 sh | 500,000 | $5.7M | 1.07% | — |
| 3 | RA CAPITAL MANAGEMENT, L.P.#3 · 500,000 sh | 500,000 | $5.7M | 0.05% | — |
| 4 | Jupiter Topco#4 · 500,000 sh | 500,000 | $5.7M | <0.01% | — |
| 5 | ADAR1 Capital Management#5 · 417,724 sh | 417,724 | $4.7M | 0.22% | — |
| 6 | Atika Capital Management#6 · 400,000 sh | 400,000 | $4.5M | 0.30% | — |
| 7 | FRANKLIN RESOURCES#7 · 400,000 sh | 400,000 | $4.5M | <0.01% | — |
| 8 | CITADEL ADVISORS#8 · 319,986 sh | 319,986 | $3.6M | <0.01% | — |
| 9 | FARALLON CAPITAL MANAGEMENT#9 · 300,000 sh | 300,000 | $3.4M | 0.02% | — |
| 10 | BRAIDWELL#10 · 250,000 sh | 250,000 | $2.8M | 0.11% | — |
| 11 | Nantahala Capital Management#11 · 225,000 sh | 225,000 | $2.6M | 0.09% | — |
| 12 | Affinity Asset Advisors#12 · 200,000 sh | 200,000 | $2.3M | 0.10% | — |
| 13 | TCG Crossover Management#13 · 200,000 sh | 200,000 | $2.3M | 0.05% | — |
| 14 | Spruce Street Capital#14 · 160,000 sh | 160,000 | $1.8M | 0.36% | — |
| 15 | MILLENNIUM MANAGEMENT#15 · 159,683 sh | 159,683 | $1.8M | <0.01% | — |
| 16 | Logos Global Management#16 · 100,000 sh | 100,000 | $1.1M | 0.05% | — |
| 17 | TWO SIGMA INVESTMENTS#17 · 96,165 sh | 96,165 | $1.1M | <0.01% | — |
| 18 | TORONTO DOMINION BANK#18 · 50,500 sh | 50,500 | $573.7K | <0.01% | — |
| 19 | Woodline Partners#19 · 50,000 sh | 50,000 | $568.0K | <0.01% | — |
| 20 | Magnetar Financial#20 · 47,908 sh | 47,908 | $544.2K | <0.01% | — |
| 21 | 683 Capital Management#21 · 42,264 sh | 42,264 | $480.1K | 0.02% | — |
| 22 | DIADEMA PARTNERS#22 · 9,021 sh | 9,021 | $102.5K | 0.01% | — |
| 23 | Clear Street Group#23 · 7,123 sh | 7,123 | $80.9K | <0.01% | — |
| 24 | Persistent Asset Partners Ltd#24 · 2,300 sh | 2,300 | $26.1K | <0.01% | — |
| 25 | MORGAN STANLEY#25 · 8 sh | 8 | $91.00 | 0.00% | — |
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 the prior quarter 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.