Quantum-Si (QSI) Price: 1.53

Quantum-Si, Inc. (QSI)

1.53 +0.31 (+25.41%) USD | NASDAQ | Oct 09, 16:00

1.54 +0.01 (+0.65%) After-Hours: 20:00

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Historical Price Data

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Date	Open	High	Low	Close	Volume
Oct 09, 2026	1.26	1.66	1.258	1.53	40.90M
Oct 08, 2026	1.29	1.30	1.20	1.22	5.851M
Oct 07, 2026	1.17	1.310	1.09	1.28	8.037M
Oct 06, 2026	1.29	1.41	1.19	1.22	8.703M
Oct 05, 2026	1.525	1.53	1.260	1.28	19.19M
Oct 02, 2026	1.385	1.55	1.17	1.55	18.77M
Oct 01, 2026	1.20	1.48	1.15	1.43	33.06M
Sep 30, 2026	0.96	1.12	0.96	1.07	13.84M
Sep 29, 2026	0.805	1.03	0.805	0.9581	23.01M
Sep 28, 2026	0.825	0.8338	0.795	0.795	1.567M
Sep 25, 2026	0.7943	0.84	0.7755	0.8343	2.593M
Sep 24, 2026	0.75	0.7991	0.7434	0.785	1.593M
Sep 23, 2026	0.79	0.805	0.7515	0.7587	1.477M
Sep 22, 2026	0.76	0.792	0.7511	0.7847	2.430M
Sep 21, 2026	0.7588	0.7661	0.75	0.7559	1.127M
Sep 18, 2026	0.79	0.8015	0.74	0.7451	1.713M
Sep 17, 2026	0.7495	0.7963	0.7495	0.77	2.826M
Sep 16, 2026	0.721	0.7532	0.721	0.7301	915220.0
Sep 15, 2026	0.72	0.7409	0.72	0.72	1.167M
Sep 14, 2026	0.7287	0.7478	0.7201	0.725	1.390M
Sep 11, 2026	0.7391	0.755	0.7391	0.74	1.074M
Sep 10, 2026	0.75	0.755	0.7251	0.7391	1.715M
Sep 09, 2026	0.7602	0.7748	0.746	0.75	1.449M
Sep 08, 2026	0.7672	0.79	0.76	0.76	1.054M
Sep 04, 2026	0.76	0.7742	0.76	0.766	898781.0

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