Quantum-Si Stock (QSI)

Track Quantum-Si stock through TheStreet Pro's latest coverage, including articles, Daily Diary mentions, TheStreet Pro portfolio activity, contributor watchlist signals, and Pro price levels.

At close
$1.05
-0.23 (-17.97%)
Jun 5, 4:00 PM ET
After-hours
$1.04
-0.01 (-0.95%)
Jun 5, 7:59 PM ET
$1.00$1.50$2.00$2.50$3.00Jun '25Aug '25Oct '25Jan '26Mar '26Jun '26
Market Cap
$259.13M
P/E Ratio
1Y Return
-34.38%
EPS (TTM)
-$0.51

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Daily Diary Mentions

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