Ownership history in SIMPLEX TRADING, LLC · 10 quarters on record
This page tracks every 13F SEC filing in which SIMPLEX TRADING, LLC reported a position in MERUS N V (MRUS). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2025 Q4 | REDUCED | 837 | -12,263 | -93.6% | 0.00% | $75K | — |
| 2025 Q2 | ADDED | 13,100 | +12,974 | +10296.8% | 0.00% | $689K | — |
| 2024 Q4 | ADDED | 126 | +36 | +40.0% | 0.00% | $5K | — |
| 2024 Q3 | REDUCED | 90 | -1,983 | -95.7% | 0.00% | $4K | — |
As of 2025 Q4 — sorted by position size