Who owns Spark I Acquisition Corp?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of SPKL from SEC Form 13F filings across 16 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, 16 institutions disclosed 1.5M shares of Spark I Acquisition Corp worth $18.0M — about 66.1% of shares outstanding; the largest disclosed holder is MIZUHO SECURITIES USA LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
16
13F holders
$18.0M
value, 2026 filers
66.1%
of shares outstanding (1.5M sh)
7
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 SPKL's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | MIZUHO SECURITIES USA LLC | 438,529 | $4.9M | 0.1% | 19.6% | 0.0% |
| 2 | AQR Arbitrage LLC | 437,689 | $5.5M | 0.1% | 19.6% | -30.9% |
| 3 | Yaupon Capital Management LPNEW | 156,250 | $2.0M | 0.0% | 7% | new |
| 4 | FNY Investment Advisers, LLCNEW | 116,031 | $1.5M | 0.5% | 5.2% | new |
| 5 | MOORE CAPITAL MANAGEMENT, LP | 100,000 | $1.3M | 0.0% | 4.5% | 0.0% |
| 6 | Periscope Capital Inc. | 45,000 | $564,903 | 0.0% | 2% | -64.0% |
| 7 | Polar Asset Management Partners Inc.NEW | 44,757 | $562,148 | 0.0% | 2% | new |
| 8 | BERKLEY W R CORP | 31,058 | $389,778 | 0.0% | 1.4% | -65.7% |
| 9 | HRT FINANCIAL LPNEW | 29,589 | $371,000 | 0.0% | 1.3% | new |
| 10 | Linden Advisors LP | 25,000 | $313,750 | 0.0% | 1.1% | 0.0% |
| 11 | Brevan Howard Capital Management LPNEW | 18,233 | $232,471 | 0.0% | 0.8% | new |
| 12 | Clear Street Group Inc. | 14,000 | $175,700 | 0.0% | 0.6% | -49.6% |
| 13 | JANE STREET GROUP, LLCNEW | 13,219 | $165,898 | 0.0% | 0.6% | new |
| 14 | TORONTO DOMINION BANK | 10,000 | $125,500 | 0.0% | 0.4% | +38.5% |
| 15 | MORGAN STANLEY | 65 | $816 | 0.0% | 0% | -7.1% |
| 16 | Caitong International Asset Management Co., LtdNEW | 9 | $113 | 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.