MY SizeMYSZ
13F holders, Q1 2026 (March 31)8holders +1
2new positions
1sold out
1famous investor
$0.60avg. 13F price*
At the end of Q1 2026, 8 institutions reported holding MY Size Inc. (MYSZ) in their 13F filings, up 1 from Q4 2025. 2 opened new positions and 1 sold out. The largest holders were Williams & Novak, LLC ($18K), XTX Topco Ltd ($11K) and Citadel Advisors ($11K). One famous investor held it Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- MY Size Inc.
- CUSIP
- 62844N406
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $11K |
| Exits | 1 | $56K |
All 13F filers, Q4 2025 → Q1 2026: 27,066 shares bought and 73,903 shares sold, net −46,837 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 8 holders
| Williams & Novak, LLC | 0.01% | Add +18.9% | 27,030 | $18K |
| XTX Topco Ltd | 0.00% | Reduce -3.4% | 19,530 | $11K |
| Citadel Advisors | 0.00% | New | 19,423 | $11K |
| Susquehanna International Group, LLP | 0.00% | Add +9.1% | 13,102 | $8K |
| UBS Group AG | 0.00% | Add +107.5% | 4,362 | $3K |
| Morgan Stanley | 0.00% | No change | 509 | $294 |
| SBI Securities Co., Ltd. | 0.00% | No change | 25 | $14 |
| Johnson Financial Group, Inc. | 0.00% | New | 1 | $1 |
"% of holder's portfolio" is MYSZ's weight in each manager's 13F, not the share of MY Size Inc. the manager owns.