Who owns JATT II Acquisition Corp.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of JATT from SEC Form 13F filings across 25 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 25 institutions disclosed 5.4M shares of JATT II Acquisition Corp. worth $61.7M — about 362.5% of shares outstanding; the largest disclosed holder is Balyasny Asset Management L.P.. Source: SEC Form 13F filings, parsed by EvidInvest.
25
13F holders
$61.7M
value, 2026 filers
362.5%
of shares outstanding (5.4M sh)
25
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of JATT's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Balyasny Asset Management L.P.NEW | 500,000 | $5.7M | 0.0% | 33.3% | new |
| 2 | Jupiter Topco LLCNEW | 500,000 | $5.7M | 0.0% | 33.3% | new |
| 3 | GREAT POINT PARTNERS LLCNEW | 500,000 | $5.7M | 1.1% | 33.3% | new |
| 4 | RA CAPITAL MANAGEMENT, L.P.NEW | 500,000 | $5.7M | 0.0% | 33.3% | new |
| 5 | ADAR1 Capital Management, LLCNEW | 417,724 | $4.7M | 0.2% | 27.8% | new |
| 6 | Atika Capital Management LLCNEW | 400,000 | $4.5M | 0.3% | 26.7% | new |
| 7 | FRANKLIN RESOURCES INCNEW | 400,000 | $4.5M | 0.0% | 26.7% | new |
| 8 | CITADEL ADVISORS LLCNEW | 319,986 | $3.6M | 0.0% | 21.3% | new |
| 9 | FARALLON CAPITAL MANAGEMENT, L.L.C.NEW | 300,000 | $3.4M | 0.0% | 20% | new |
| 10 | BRAIDWELL LPNEW | 250,000 | $2.8M | 0.1% | 16.7% | new |
| 11 | Nantahala Capital Management, LLCNEW | 225,000 | $2.6M | 0.1% | 15% | new |
| 12 | TCG Crossover Management, LLCNEW | 200,000 | $2.3M | 0.1% | 13.3% | new |
| 13 | Affinity Asset Advisors, LLCNEW | 200,000 | $2.3M | 0.1% | 13.3% | new |
| 14 | Spruce Street Capital LPNEW | 160,000 | $1.8M | 0.4% | 10.7% | new |
| 15 | MILLENNIUM MANAGEMENT LLCNEW | 159,683 | $1.8M | 0.0% | 10.6% | new |
| 16 | Logos Global Management LPNEW | 100,000 | $1.1M | 0.0% | 6.7% | new |
| 17 | TWO SIGMA INVESTMENTS, LPNEW | 96,165 | $1.1M | 0.0% | 6.4% | new |
| 18 | TORONTO DOMINION BANKNEW | 50,500 | $573,680 | 0.0% | 3.4% | new |
| 19 | Woodline Partners LPNEW | 50,000 | $568,000 | 0.0% | 3.3% | new |
| 20 | Magnetar Financial LLCNEW | 47,908 | $544,235 | 0.0% | 3.2% | new |
| 21 | 683 Capital Management, LLCNEW | 42,264 | $480,119 | 0.0% | 2.8% | new |
| 22 | DIADEMA PARTNERS LPNEW | 9,021 | $102,479 | 0.0% | 0.6% | new |
| 23 | Clear Street Group Inc.NEW | 7,123 | $80,917 | 0.0% | 0.5% | new |
| 24 | Persistent Asset Partners LtdNEW | 2,300 | $26,128 | 0.0% | 0.2% | new |
| 25 | MORGAN STANLEYNEW | 8 | $91 | 0.0% | 0% | new |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.