How many shares of QSI does NORTHERN TRUST CORP own?

As of 2026-Q2, NORTHERN TRUST CORP holds 450,531 shares of QSI (QUANTUM SI INC).

What is NORTHERN TRUST CORP's QSI position worth?

As of 2026-Q2, NORTHERN TRUST CORP's QSI position is worth $398,720.

In 2026-Q2, NORTHERN TRUST CORP decreased their QSI position (-64.3% change in shares).

Based on available 13F filings, NORTHERN TRUST CORP first reported a position in QSI in 2021-Q3. They have held the position across 20 quarters.

Position history for NORTHERN TRUST CORP's holdings in QUANTUM SI INC

Current Value

$398,720

Current Shares

450,531

Total Value Change

-$810,280

Total Shares Change

+305,598

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	450,531	-64.3%	$398,720	0.0%	$0.89	0
2026-Q1	Decreased	1.3M	-42.9%	$975,783	0.0%	$0.95	0
2025-Q4	Decreased	2.2M	-5.0%	$2.4M	0.0%	$1.11	0
2025-Q3	Increased	2.3M	+1.5%	$3.3M	0.0%	$1.39	27
2025-Q2	Increased	2.3M	+124.0%	$4.5M	0.0%	$1.95	43
2025-Q1	Increased	1M	+21.5%	$1.2M	0.0%	$1.27	30
2024-Q4	Increased	841,146	+5.0%	$2.3M	0.0%	$3.33	27
2024-Q3	Increased	801,120	+2.4%	$706,748	0.0%	$0.91	25
2024-Q2	Decreased	782,190	-4.9%	$821,299	0.0%	$1.05	0
2024-Q1	Decreased	822,339	-0.3%	$1.6M	0.0%	$1.97	0
2023-Q4	Increased	824,387	+0.2%	$1.7M	0.0%	$2.01	26
2023-Q3	Increased	822,762	+5.6%	$1.4M	0.0%	$1.66	27
2023-Q2	Increased	778,842	+4.9%	$1.4M	0.0%	$1.71	27
2023-Q1	Decreased	742,477	-3.7%	$1.3M	0.0%	$1.65	0
2022-Q4	Decreased	771,007	-0.2%	$1.4M	0.0%	$1.83	0
2022-Q3	Decreased	772,579	-0.3%	$2.1M	0.0%	$2.73	0
2022-Q2	Increased	774,618	+369.8%	$1.8M	0.0%	$2.41	42
2022-Q1	Decreased	164,881	-2.4%	$772,000	0.0%	$5.00	0
2021-Q4	Increased	168,878	+16.5%	$1.3M	0.0%	$7.83	29
2021-Q3	New	144,933	-	$1.2M	0.0%	$8.41	35