19 institutions reported holding $4.03B of ASML Hldgs NV Ord (ASMLF) in SEC 13F filings for 2026-03-31. Largest institutional holders: IMC-Chicago, LLC ($1.81B), Optiver Holding B.V. ($1.28B), SIMPLEX TRADING, LLC ($384.9M), GROUP ONE TRADING LLC ($227.1M), JPMORGAN CHASE & CO ($150.1M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $1.81B | 1.4M | Added |
| 2 | Optiver Holding B.V. | $1.28B | 965,600 | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $384.9M | 291,400 | Trimmed |
| 4 | GROUP ONE TRADING LLC | $227.1M | 171,900 | Trimmed |
| 5 | JPMORGAN CHASE & CO | $150.1M | 119,700 | Added |
| 6 | HRT FINANCIAL LP | $79.5M | 60,200 | Added |
| 7 | CMT Capital Markets Trading GmbH | $64.7M | 49,000 | Trimmed |
| 8 | Generali Investments CEE, investicni spolecnost, a.s. | $12.9M | 10,008 | New |
| 9 | BlackRock, Inc. | $7.9M | 6,000 | New |
| 10 | Freemont Management S.A. | $7.1M | 5,400 | Trimmed |
| 11 | Capital Markets Trading UK LLP | $4.0M | 3,000 | Trimmed |
| 12 | ATLAS CAPITAL ADVISORS INC. | $1.7M | 1,285 | Hold |
| 13 | Orion Capital Management LLC | $132,083 | 100 | Hold |
| 14 | OSAIC HOLDINGS, INC. | $74,430 | 1 | Hold |
| 15 | CenterStar Asset Management, LLC | $0 | 0 | Exited |
| 16 | SG Americas Securities, LLC | $0 | 0 | Exited |
| 17 | Steigerwald, Gordon & Koch Inc. | $0 | 0 | Exited |
| 18 | Canoe Financial LP | $0 | 0 | Exited |
| 19 | Rule One Partners, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31