NASDAQ · QSI

Quantum-Si incorporated

Healthcare · Biotechnology

$0.80

Down-$0.02 (-2.79%)

Updated Aug 28, 2026, 4:57 PM

SID Score

3.8/10

Composite research score

Smart Money

—

Institutional and insider signal

Price performance

QSI price history

1M range · 21 trading sessions · Daily adjusted prices

Daily close

View OHLC price history

QSI OHLC price history, latest 40 sessions
Date	Open	High	Low	Close	Volume
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
Aug 18, 2026	$0.7325	$0.7439	$0.7184	$0.728	1.52M
Aug 17, 2026	$0.74	$0.795	$0.7394	$0.7442	2.43M
Aug 14, 2026	$0.75	$0.767	$0.71	$0.7398	7M
Aug 13, 2026	$0.855	$0.9138	$0.79	$0.79	4.38M
Aug 12, 2026	$0.8308	$0.8699	$0.8256	$0.8374	1.5M
Aug 11, 2026	$0.7951	$0.8489	$0.7951	$0.8202	2.06M
Aug 10, 2026	$0.8176	$0.84	$0.7901	$0.7901	2.43M
Aug 7, 2026	$0.7618	$0.8285	$0.7618	$0.8144	2.73M
Aug 6, 2026	$0.7522	$0.779	$0.75	$0.755	1.49M
Aug 5, 2026	$0.7752	$0.7926	$0.7565	$0.7565	2.48M
Aug 4, 2026	$0.7642	$0.796	$0.7642	$0.7654	3.99M
Aug 3, 2026	$0.72	$0.7599	$0.711	$0.746	2.71M
Jul 31, 2026	$0.73	$0.748	$0.71	$0.7124	1.84M
Jul 30, 2026	$0.7256	$0.7441	$0.69	$0.72	3.56M