Mariner
QSI icon

Mariner’s Quantum-Si Incorporated QSI Stock Holding History

Mariner’s Portfolio QSI Stock Details QSI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$155K Buy
199,692
+142,812
+251% +$148K ﹤0.01% 3229
2025
Q4 		$62.6K Buy
56,880
+6,351
+13% +$10.3K ﹤0.01% 3396
2025
Q3 		$71.2K Sell
50,529
-65
-0.1% -$94 ﹤0.01% 3408
2025
Q2 		$99.2K Buy
50,594
+2,589
+5% +$3.83K ﹤0.01% 3247
2025
Q1 		$57.6K Buy
48,005
+14,566
+44% +$27.9K ﹤0.01% 3292
2024
Q4 		$90.3K Buy
33,439
+7,540
+29% +$8.84K ﹤0.01% 3204
2024
Q3 		$22.8K Buy
+25,899
New +$25.1K ﹤0.01% 3239
2023
Q4 		– Sell
-11,263
Closed -$18.7K – 3157
2023
Q3 		$18.7K Buy
+11,263
New +$27.1K ﹤0.01% 2846

Other funds holding QSI

BlackRock
BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
AIM
ARK Investment Management St. Petersburg, Florida $12.9B AUM 64.92% 1-Year Est. Return
NAMA
Nikko Asset Management Americas New York $7.07B AUM 50.91% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $564B AUM 30.12% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM