NASDAQ · QSI

Quantum-Si incorporated

Healthcare · Biotechnology

$0.79

Down-$0.06 (-7.62%)

Updated Aug 14, 2026, 3:53 PM

SID Score

3.5/10

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 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
Jul 29, 2026	$0.7574	$0.7799	$0.7023	$0.7023	4.1M
Jul 28, 2026	$0.775	$0.7799	$0.7401	$0.7606	3.27M
Jul 27, 2026	$0.7884	$0.8097	$0.7715	$0.7834	1.09M
Jul 24, 2026	$0.7944	$0.8012	$0.7608	$0.7701	2.59M
Jul 23, 2026	$0.79	$0.828	$0.7809	$0.79	3.29M
Jul 22, 2026	$0.81	$0.8454	$0.80	$0.80	2.84M
Jul 21, 2026	$0.8216	$0.8498	$0.8216	$0.836	1.47M
Jul 20, 2026	$0.83	$0.8422	$0.8099	$0.817	1.5M
Jul 17, 2026	$0.82	$0.8462	$0.803	$0.8224	2.3M
Jul 16, 2026	$0.854	$0.8558	$0.806	$0.8193	3.74M