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ARK Investment Management’s Quantum-Si Incorporated QSI Stock Holding History

ARK Investment Management’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 		$5.32M Sell
6,878,899
-142,672
-2% -$148K 0.04% 106
2025
Q4 		$7.72M Sell
7,021,571
-602,471
-8% -$981K 0.05% 116
2025
Q3 		$10.7M Sell
7,624,042
-336,694
-4% -$487K 0.06% 111
2025
Q2 		$15.6M Sell
7,960,736
-752,765
-9% -$1.11M 0.11% 84
2025
Q1 		$10.5M Sell
8,713,501
-135,149
-2% -$259K 0.1% 90
2024
Q4 		$23.9M Sell
8,848,650
-2,993,959
-25% -$3.51M 0.2% 63
2024
Q3 		$10.4M Sell
11,842,609
-567,320
-5% -$551K 0.1% 93
2024
Q2 		$13M Sell
12,409,929
-358,947
-3% -$575K 0.12% 87
2024
Q1 		$25.2M Sell
12,768,876
-2,750,446
-18% -$4.81M 0.17% 68
2023
Q4 		$31.2M Buy
15,519,322
+1,071,105
+7% +$1.63M 0.18% 64
2023
Q3 		$24M Buy
14,448,217
+1,693,686
+13% +$4.08M 0.18% 67
2023
Q2 		$22.8M Buy
12,754,531
+1,055,740
+9% +$1.65M 0.15% 79
2023
Q1 		$20.6M Sell
11,698,791
-157,393
-1% -$310K 0.14% 71
2022
Q4 		$21.7M Sell
11,856,184
-1,381,606
-10% -$3.56M 0.19% 69
2022
Q3 		$36.4M Sell
13,237,790
-631,294
-5% -$2.02M 0.25% 54
2022
Q2 		$58.9M Buy
13,869,084
+495,527
+4% +$1.9M 0.35% 50
2022
Q1 		$62.6M Buy
13,373,557
+306,407
+2% +$1.49M 0.26% 60
2021
Q4 		$103M Buy
13,067,150
+368,769
+3% +$2.78M 0.31% 56
2021
Q3 		$106M Buy
12,698,381
+8,650,078
+214% +$85.2M 0.25% 68
2021
Q2 		$49.6M Buy
+4,048,303
New +$42.4M 0.09% 124

Other funds holding QSI

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
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 $175B AUM 40.63% 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 $666B AUM 30.12% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

ARK Investment Management's QSI Position: Q1 2026 in Review

ARK Investment Management reduced its Quantum-Si Incorporated (QSI) stake by 2% in Q1 2026, selling an estimated $148K and leaving 6,878,899 shares worth $5.32M. The position accounts for 0.04% of the portfolio, ranked #106.

ARK Investment Management first reported a position in QSI in Q2 2021 and has held it in 20 quarters since. The position peaked at $106M in Q3 2021. 156 funds tracked by Wall St. Rank hold QSI as of Q1 2026.

  • ARK Investment Management held 6,878,899 shares of Quantum-Si Incorporated worth $5.32M as of Q1 2026.
  • ARK Investment Management sold 142,672 Quantum-Si Incorporated shares in Q1 2026, an estimated $148K.
  • Quantum-Si Incorporated made up 0.04% of ARK Investment Management's portfolio in Q1 2026, its #106 holding.
  • ARK Investment Management first reported a position in Quantum-Si Incorporated in Q2 2021 and has held it in 20 quarters since.
  • ARK Investment Management's Quantum-Si Incorporated position peaked at $106M in Q3 2021.
  • 156 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q1 2026.

Based on ARK Investment Management's 13F filing for Q1 2026, filed 12 May 2026.