Ownership history in SIMPLEX TRADING, LLC · 9 quarters on record
This page tracks every 13F SEC filing in which SIMPLEX TRADING, LLC reported a position in AMBER RD INC (AMBR). 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 | ADDED | 19,412 | +14,108 | +266.0% | 0.00% | $34K | $1.73 |
| 2025 Q2 | ADDED | 5,304 | +4,449 | +520.4% | 0.00% | $58K | $11.03 |
| 2025 Q1 | REDUCED | 855 | -934 | -52.2% | 0.00% | $10K | $11.98 |
| 2024 Q4 | ADDED | 1,789 | +1,189 | +198.2% | 0.00% | $16K | $9.36 |
| 2019 Q2 | ADDED | 600 | +431 | +255.0% | 0.00% | $7K | $37.80 |
| 2017 Q3 | REDUCED | 169 | -758 | -81.8% | 0.00% | $1K | — |
| 2016 Q3 | REDUCED | 927 | -73 | -7.3% | 0.00% | $8K | — |
| 2015 Q1 | ADDED | 1,000 | +2 | +0.2% | 0.00% | $9K | — |
| 2014 Q4 | INITIATED | 998 | — | — | 0.00% | $10K | — |
As of 2025 Q4 — sorted by position size