How many shares of QSI does STATE STREET CORP own?

As of 2026-Q2, STATE STREET CORP holds 890,741 shares of QSI (QUANTUM SI INC).

What is STATE STREET CORP's QSI position worth?

As of 2026-Q2, STATE STREET CORP's QSI position is worth $788,306.

In 2026-Q2, STATE STREET CORP decreased their QSI position (-76.4% change in shares).

Based on available 13F filings, STATE STREET CORP first reported a position in QSI in 2021-Q3. They have held the position across 19 quarters.

Position history for STATE STREET CORP's holdings in QUANTUM SI INC

Current Value

$788,306

Current Shares

890,741

Total Value Change

-$1.3M

Total Shares Change

+637,841

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	890,741	-76.4%	$788,306	0.0%	$0.89	0
2026-Q1	Increased	3.8M	+5.8%	$2.9M	0.0%	$0.95	28
2025-Q4	Increased	3.6M	+26.4%	$3.9M	0.0%	$1.11	33
2025-Q3	Increased	2.8M	+2.2%	$4M	0.0%	$1.39	27
2025-Q2	Increased	2.8M	+12.3%	$5.4M	0.0%	$1.95	30
2025-Q1	Increased	2.5M	+2.0%	$2.9M	0.0%	$1.27	27
2024-Q4	Increased	2.4M	+6.0%	$6.5M	0.0%	$3.33	29
2024-Q3	Decreased	2.3M	-4.3%	$2M	0.0%	$0.91	0
2024-Q2	Increased	2.4M	+9.8%	$2.5M	0.0%	$1.05	29
2024-Q1	Decreased	2.2M	-2.3%	$4.3M	0.0%	$1.97	0
2023-Q4	Increased	2.2M	+0.8%	$4.4M	0.0%	$2.01	27
2023-Q3	Increased	2.2M	+5.3%	$3.6M	0.0%	$1.66	28
2023-Q2	Increased	2.1M	+17.9%	$3.7M	0.0%	$1.71	31
2022-Q4	Increased	1.8M	+2.6%	$3.2M	0.0%	$1.83	27
2022-Q3	Increased	1.7M	+15.9%	$4.7M	0.0%	$2.73	31
2022-Q2	Increased	1.5M	+270.0%	$3.4M	0.0%	$2.41	43
2022-Q1	Increased	401,715	+2.8%	$1.9M	0.0%	$5.00	27
2021-Q4	Increased	390,814	+54.5%	$3.1M	0.0%	$7.83	37
2021-Q3	New	252,900	-	$2.1M	0.0%	$8.41	36