Who owns WISeKey International Holding AG?
Institutional ownership of WKEY from SEC Form 13F filings across 15 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.
15
13F holders
$3.1M
value, 2026 filers
7%
of shares outstanding (434,183 sh)
3
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 WKEY's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | MARSHALL WACE, LLP | 153,327 | $1.1M | 0.0% | 2.5% | +293.2% |
| 2 | CITADEL ADVISORS LLC | 56,630 | $414,532 | 0.0% | 0.9% | -7.3% |
| 3 | JANE STREET GROUP, LLC | 56,263 | $411,845 | 0.0% | 0.9% | +63.6% |
| 4 | MORGAN STANLEY | 49,829 | $364,749 | 0.0% | 0.8% | +119.3% |
| 5 | Finer Wealth Management, Inc. | 49,497 | $362,318 | 0.2% | 0.8% | 0.0% |
| 6 | UBS Group AG | 27,012 | $197,728 | 0.0% | 0.4% | -67.6% |
| 7 | SBI Securities Co., Ltd. | 12,545 | $91,829 | 0.0% | 0.2% | +20.3% |
| 8 | RHUMBLINE ADVISERS | 11,459 | $83,876 | 0.0% | 0.2% | +56.8% |
| 9 | HRT FINANCIAL LP | 10,877 | $79 | 0.0% | 0.2% | -31.6% |
| 10 | GAMMA Investing LLC | 4,108 | $30,071 | 0.0% | 0.1% | -3.3% |
| 11 | OSAIC HOLDINGS, INC. | 1,350 | $9,881 | 0.0% | 0% | 0.0% |
| 12 | Integrated Wealth Concepts LLCNEW | 643 | $4,707 | 0.0% | 0% | new |
| 13 | Arax Advisory PartnersNEW | 330 | $2,416 | 0.0% | 0% | new |
| 14 | Abound Wealth ManagementNEW | 160 | $1,172 | 0.0% | 0% | new |
| 15 | JPMORGAN CHASE & CO | 153 | $1,076 | 0.0% | 0% | -65.1% |
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.