QSIhistorical intraday data
ListedQuantum-Si Incorporated Class A Common StockNasdaq
Quantum-Si Incorporated Class A Common Stock (QSI) is a common stock listed on Nasdaq. QSI has 1,359 trading days on file, from June 11, 2021 to November 9, 2026, with 17,012,195 trades. There are 539,930 1-minute bars on file.
On file
- First day
- 2021-06-11
- Last day
- 2026-11-09
- Trading days
- 1,359
- Trades
- 17,012,195
- 1-minute bars
- 539,930
- Bars, about
- 8.1 MB
- Trades, about
- 235 MB
- Quotes, about
- 169 MB
Sizes are approximate: this ticker’s share of the Parquet files.
Trading history
Symbols get reused, so the history under QSI is not always one company.
Sample rows
| Time (ET) | Open | High | Low | Close | Volume | Trades |
|---|---|---|---|---|---|---|
| 09:30 | 1.37 | 1.37 | 1.33 | 1.33 | 99,457.384106 | 132 |
| 09:31 | 1.3388 | 1.34 | 1.32 | 1.325 | 33,568.077503 | 50 |
| 09:32 | 1.3295 | 1.3295 | 1.3226 | 1.325 | 16,197.415094 | 14 |
| 09:33 | 1.325 | 1.3299 | 1.31 | 1.3276 | 121,338.9104 | 79 |
| 09:34 | 1.3203 | 1.3297 | 1.32 | 1.325 | 5,926.734249 | 18 |
QSI by year
| Year | Trading days on file | Trades |
|---|---|---|
| 2021 | 142 | 986,712 |
| 2022 | 251 | 1,613,658 |
| 2023 | 250 | 1,389,082 |
| 2024 | 252 | 3,523,813 |
| 2025 | 250 | 6,540,424 |
| 2026 | 214 | 2,958,506 |