Who owns Clearthink 1 Acquisition Corp.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of CTAAU from SEC Form 13F filings across 9 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, 9 institutions disclosed 1.9M shares of Clearthink 1 Acquisition Corp. worth $18.8M — about 14.6% of shares outstanding; the largest disclosed holder is MANGROVE PARTNERS IM, LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
9
13F holders
$18.8M
value, 2026 filers
14.6%
of shares outstanding (1.9M sh)
1
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 CTAAU's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | MANGROVE PARTNERS IM, LLC | 605,000 | $6.1M | 0.4% | 4.7% | 0.0% |
| 2 | TORONTO DOMINION BANK | 376,470 | $3.8M | 0.0% | 2.9% | -21.0% |
| 3 | MIZUHO SECURITIES USA LLC | 351,056 | $3.5M | 0.1% | 2.7% | 0.0% |
| 4 | BOOTHBAY FUND MANAGEMENT, LLC | 200,000 | $2.0M | 0.0% | 1.6% | 0.0% |
| 5 | Yakira Capital Management, Inc. | 150,000 | $1.5M | 0.4% | 1.2% | 0.0% |
| 6 | Lineage Point Capital LP | 129,300 | $1.3M | 0.3% | 1% | 0.0% |
| 7 | Clear Street Group Inc.NEW | 37,784 | $380,863 | 0.0% | 0.3% | new |
| 8 | HRT FINANCIAL LP | 25,000 | $252,000 | 0.0% | 0.2% | 0.0% |
| 9 | UBS Group AG | 349 | $3,497 | 0.0% | 0% | +252.5% |
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. Research, not investment advice.