Ownership history in GROUP ONE TRADING LLC · 9 quarters on record
This page tracks every 13F SEC filing in which GROUP ONE TRADING LLC reported a position in PROS HOLDINGS INC (PRO). 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 | 33 | -2,537 | -98.7% | 0.00% | $756 | — |
| 2025 Q2 | REDUCED | 2,570 | -1,502 | -36.9% | 0.00% | $40K | — |
| 2023 Q3 | ADDED | 4,072 | +2,955 | +264.5% | 0.00% | $141K | — |
| 2023 Q1 | ADDED | 1,117 | +948 | +560.9% | 0.00% | $31K | — |
| 2022 Q4 | ADDED | 169 | +69 | +69.0% | 0.00% | $4K | — |
| 2020 Q4 | REDUCED | 100 | -202 | -66.9% | 0.00% | $5K | — |
| 2020 Q1 | REDUCED | 302 | -3,186 | -91.3% | 0.00% | $9K | — |
| 2019 Q4 | REDUCED | 3,488 | -7,686 | -68.8% | 0.00% | $209K | — |
| 2019 Q3 | INITIATED | 11,174 | — | — | 0.01% | $666K | — |