Quantum-Si
QSI | NASDAQ
$0.77
+$0.01 (+1.87%)
Sep 22, 2026, 11:22 AM ET · Market open
Market Cap History History
Annual Market Cap Change Annual Change
| Date | Market Cap | Change | % Change |
|---|---|---|---|
| Sep 20, 2026 | $164.14M | -$92.98M | -36.16% |
| Dec 25, 2025 | $257.12M | -$255.52M | -49.84% |
| Dec 26, 2024 | $512.64M | $227.9M | +80.04% |
| Dec 28, 2023 | $284.74M | $29.37M | +11.50% |
| Dec 29, 2022 | $255.36M | -$825.7M | -76.38% |
| Dec 30, 2021 | $1.08B | $1.03B | +1880.34% |
| Dec 30, 2020 | $54.59M | n/a | n/a |
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