Ownership history in GROUP ONE TRADING LLC · 5 quarters on record
This page tracks every 13F SEC filing in which GROUP ONE TRADING LLC reported a position in CERTARA INC (CERT). 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 Q3 | REDUCED | 619 | -6,276 | -91.0% | 0.00% | $8K | $12.22 |
| 2025 Q2 | ADDED | 6,895 | +4,674 | +210.4% | 0.00% | $81K | $11.70 |
| 2025 Q1 | ADDED | 2,221 | +1,921 | +640.3% | 0.00% | $22K | $9.90 |
| 2024 Q3 | REDUCED | 300 | -2,445 | -89.1% | 0.00% | $4K | $11.71 |
| 2021 Q2 | INITIATED | 2,745 | — | — | 0.00% | $78K | $28.33 |
As of 2025 Q4 — sorted by position size