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QSIQSI
19 quarters

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

NORTHERN TRUST CORP holds 1.3M shares of QSI (QUANTUM SI INC), worth $975,783 as of 2026-Q1. The position was decreased (-42.9% shares). QSI represents 0.0% of NORTHERN TRUST CORP's portfolio.

Current Value

$975,783

Current Shares

1.3M

Total Value Change

-$233,217

Total Shares Change

+1.1M

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q1
Latest
Decreased
1.3M
-42.9%
$975,7830.0%$0.95
0
2025-Q4
Decreased
2.2M
-5.0%
$2.4M0.0%$1.11
0
2025-Q3
Increased
2.3M
+1.5%
$3.3M0.0%$1.39
27
2025-Q2
Increased
2.3M
+124.0%
$4.5M0.0%$1.95
43
2025-Q1
Increased
1M
+21.5%
$1.2M0.0%$1.27
30
2024-Q4
Increased
841,146
+5.0%
$2.3M0.0%$3.33
27
2024-Q3
Increased
801,120
+2.4%
$706,7480.0%$0.91
25
2024-Q2
Decreased
782,190
-4.9%
$821,2990.0%$1.05
0
2024-Q1
Decreased
822,339
-0.3%
$1.6M0.0%$1.97
0
2023-Q4
Increased
824,387
+0.2%
$1.7M0.0%$2.01
26
2023-Q3
Increased
822,762
+5.6%
$1.4M0.0%$1.66
27
2023-Q2
Increased
778,842
+4.9%
$1.4M0.0%$1.71
27
2023-Q1
Decreased
742,477
-3.7%
$1.3M0.0%$1.65
0
2022-Q4
Decreased
771,007
-0.2%
$1.4M0.0%$1.83
0
2022-Q3
Decreased
772,579
-0.3%
$2.1M0.0%$2.73
0
2022-Q2
Increased
774,618
+369.8%
$1.8M0.0%$2.41
42
2022-Q1
Decreased
164,881
-2.4%
$772,0000.0%$5.00
0
2021-Q4
Increased
168,878
+16.5%
$1.3M0.0%$7.83
29
2021-Q3
New
144,933
-
$1.2M0.0%$8.41
35

Other major holders of QSI: ARK Investment Management LLC, GLENVIEW CAPITAL MANAGEMENT, LLC

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