QSI Stock Chart - Quantum-Si incorporated logo

QSI Stock Chart

Quantum-Si incorporated

$1.39
-$0.02(-1.42%)
56
Overall
60
Value
83
Tech
26
Quality
How is this score calculated?
Market Cap
$304.25M
Volume
5.32M
52W Range
$0.69 - $3.10
Target Price
$2.30

QSI stock chart: Quantum-Si incorporated's price history from one week to all-time, with daily volume. The 52-week range is $0.69 to $3.10.

QSI Stock Price History

Close (Oct 14, 2026)
$1.39
Return since Oct 13, 2025
-33.17%
High (period)
$2.63
Low (period)
$0.70
50-day moving average
$0.90
200-day moving average
$0.95
QSI month-end closing prices
MonthClose
Oct 2026$1.39
Sep 2026$1.07
Aug 2026$0.77
Jul 2026$0.71
Jun 2026$0.89
May 2026$1.19
Apr 2026$0.98
Mar 2026$0.77
Feb 2026$0.96
Jan 2026$1.13
Dec 2025$1.10
Nov 2025$1.41
ABCD
1SymbolPriceChangeVol
2QSI$1.39-1.4%5.32M
3
4
5
6

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Stock data provided by MarketXLS.