NASDAQ · QSI

Quantum-Si incorporated

Healthcare · Biotechnology

$0.73

Up+$0.06 (+7.89%)

Updated Sep 17, 2026, 3:26 PM

SID Score

2.7/10

Composite research score

Smart Money

—

Institutional and insider signal

Price performance

QSI price history

1M range · 20 trading sessions · Daily adjusted prices

Daily close

View OHLC price history

QSI OHLC price history, latest 40 sessions
Date	Open	High	Low	Close	Volume
Sep 16, 2026	$0.721	$0.7532	$0.721	$0.7301	915.22K
Sep 15, 2026	$0.72	$0.7409	$0.72	$0.72	1.17M
Sep 14, 2026	$0.7287	$0.7478	$0.7201	$0.725	1.39M
Sep 11, 2026	$0.7391	$0.755	$0.7391	$0.74	1.07M
Sep 10, 2026	$0.75	$0.755	$0.7251	$0.7391	1.72M
Sep 9, 2026	$0.7602	$0.7748	$0.746	$0.75	1.45M
Sep 8, 2026	$0.7672	$0.79	$0.76	$0.76	1.05M
Sep 4, 2026	$0.76	$0.7742	$0.76	$0.766	898.78K
Sep 3, 2026	$0.7669	$0.7862	$0.76	$0.761	980K
Sep 2, 2026	$0.7586	$0.785	$0.75	$0.761	1.62M
Sep 1, 2026	$0.75	$0.7768	$0.7499	$0.7573	1.5M
Aug 31, 2026	$0.7787	$0.78	$0.763	$0.7659	1.13M
Aug 28, 2026	$0.8219	$0.822	$0.77	$0.78	2.42M
Aug 27, 2026	$0.7911	$0.8337	$0.79	$0.8031	1.38M
Aug 26, 2026	$0.85	$0.855	$0.7901	$0.7906	2.66M
Aug 25, 2026	$0.7888	$0.859	$0.7817	$0.8473	4.37M
Aug 24, 2026	$0.80	$0.83	$0.7515	$0.7693	3.85M
Aug 21, 2026	$0.7848	$0.931	$0.78	$0.835	7.83M
Aug 20, 2026	$0.7666	$0.8099	$0.7666	$0.78	3.23M
Aug 19, 2026	$0.7193	$0.7845	$0.7193	$0.7701	2.86M