WKEY
Wisekey International Holding S.A.Company with tickers: WKEY, WSKEF
CIK
1738699
CUSIP
97727L408
Shares Outstanding
8,176,574
13F Activity (30d)
15 filings
13 filers
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 17
Total Value: $2,257,523
Total Shares: 367,676
Institutional Ownership Trend
Holder Concentration
Across 17 13F filers · Δ vs Dec 31, 2025Top Holder
22.6%
−6.7 pts
Top 5
72.7%
−7.1 pts
Top 10
93.4%
−4.2 pts
HHI
1,275
Broadly held
−333
Quarterly Activity
vs Dec 31, 2025
New
5
Increased
5
Decreased
4
Sold Out
3
Unchanged
3
Holder count:
+2
Institutional value:
-8.4%
Shares held:
+17.1%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Large MARSHALL WACE, LLP | +10,454 | 38,992 | |
| Mega RHUMBLINE ADVISERS | +2,868 | 7,310 | |
| Mega JANE STREET GROUP, LLC | +2,378 | 34,395 | |
| Mid SBI Securities Co., Ltd. | +1,971 | 10,430 | |
| Mid GAMMA Investing LLC | +137 | 4,250 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega MORGAN STANLEY | −25,700 | 22,725 | |
| Mega UBS Group AG | −8,923 | 83,261 | |
| Mega BANK OF MONTREAL /CAN/ | −4,998 | 10,002 | |
| Large OSAIC HOLDINGS, INC. | −535 | 1,350 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega CITADEL ADVISORS LLC | 61,117 | $375,258 | |
| Large HRT FINANCIAL LP | 15,901 | $97,632 | |
| Mid Virtu Financial LLC | 14,296 | $87,777 | |
| Mid XTX Topco Ltd | 12,788 | $78,518 | |
| Large NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 124 | $761 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mid Jump Financial, LLC | 14,360 | $112,726 | |
| Small Dynamic Technology Lab Private Ltd | 13,669 | $107,301 | |
| Small MILLER WEALTH ADVISORS, LLC | 240 | $1,884 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mega UBS Group AG | $511,221 | 22.65% | 83,261 | Shares | Defined | 2026-05-05 | ||||
| Mega CITADEL ADVISORS LLC | $375,258 | 16.62% | 61,117 | Shares | Defined | 2026-05-15 | ||||
| Small Finer Wealth Management, Inc. | $303,911 | 13.46% | 49,497 | Shares | Sole | 2026-05-12 | ||||
| Large MARSHALL WACE, LLP | $239,410 | 10.60% | 38,992 | Shares | Other | 2026-05-15 | ||||
| Mega JANE STREET GROUP, LLC | $211,184 | 9.35% | 34,395 | Shares | Defined | 2026-05-12 | ||||
| Mega MORGAN STANLEY | $139,531 | 6.18% | 22,725 | Shares | Defined | 2026-05-15 | ||||
| Large HRT FINANCIAL LP | $97,632 | 4.32% | 15,901 | Shares | Defined | 2026-05-14 | ||||
| Mid Virtu Financial LLC | $87,777 | 3.89% | 14,296 | Shares | Defined | 2026-05-14 | ||||
| Mid XTX Topco Ltd | $78,518 | 3.48% | 12,788 | Shares | Defined | 2026-05-15 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $64,040 | 2.84% | 10,430 | Shares | Defined | 2026-04-28 | ||||
| Mega BANK OF MONTREAL /CAN/ Bank | $61,412 | 2.72% | 10,002 | Shares | Defined | 2026-05-13 | ||||
| Mega RHUMBLINE ADVISERS | $44,883 | 1.99% | 7,310 | Shares | Sole | 2026-05-12 | ||||
| Mid GAMMA Investing LLC | $26,095 | 1.16% | 4,250 | Shares | Defined | 2026-04-06 | ||||
| Large OSAIC HOLDINGS, INC. | $8,289 | 0.37% | 1,350 | Shares | Defined | 2026-05-15 | ||||
| Micro WealthCollab, LLC | $4,912 | 0.22% | 800 | Shares | Sole | 2026-05-13 | ||||
| Mega JPMORGAN CHASE & CO | $2,689 | 0.12% | 438 | Shares | Defined | 2026-05-13 | ||||
| Large NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | $761 | 0.03% | 124 | Shares | Defined | 2026-05-07 | ||||
| No holders match your search. | ||||||||||