Susquehanna International Group
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Susquehanna International Group’s Quantum-Si Incorporated QSI Stock Holding History

Susquehanna International Group’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
Q2 		$221K Sell
248,500
-3,200
-1% -$3.05K ﹤0.01% 11728
2026
Q1 		$194K Sell
251,700
-230,800
-48% -$239K ﹤0.01% 11741
2025
Q4 		$531K Buy
482,500
+70,000
+17% +$114K ﹤0.01% 8642
2025
Q3 		$582K Buy
412,500
+60,600
+17% +$87.6K ﹤0.01% 8625
2025
Q2 		$690K Sell
351,900
-21,900
-6% -$32.4K ﹤0.01% 8394
2025
Q1 		$449K Buy
373,800
+166,400
+80% +$319K ﹤0.01% 9137
2024
Q4 		$560K Buy
207,400
+195,500
+1,643% +$229K ﹤0.01% 8391
2024
Q3 		$10.5K Sell
11,900
-800
-6% -$777 ﹤0.01% 11716
2024
Q2 		$13.3K Sell
12,700
-10,100
-44% -$16.2K ﹤0.01% 11734
2024
Q1 		$44.9K Sell
22,800
-27,100
-54% -$47.4K ﹤0.01% 11594
2023
Q4 		$100K Sell
49,900
-34,500
-41% -$52.6K ﹤0.01% 11333
2023
Q3 		$140K Buy
+84,400
New +$203K ﹤0.01% 10620
2022
Q4 		– Sell
-26,700
Closed -$73K – 13441
2022
Q3 		$73K Sell
26,700
-15,100
-36% -$48.3K ﹤0.01% 11962
2022
Q2 		$97K Sell
41,800
-6,600
-14% -$25.3K ﹤0.01% 11510
2022
Q1 		$227K Sell
48,400
-33,000
-41% -$161K ﹤0.01% 10939
2021
Q4 		$641K Sell
81,400
-66,600
-45% -$501K ﹤0.01% 8488
2021
Q3 		$1.23M Buy
148,000
+73,700
+99% +$726K ﹤0.01% 7007
2021
Q2 		$911K Buy
74,300
+22,400
+43% +$235K ﹤0.01% 8021
2021
Q1 		$619K Buy
+51,900
New +$627K ﹤0.01% 8979

Other funds holding QSI

Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AIM
ARK Investment Management St. Petersburg, Florida $15.4B AUM 50.29% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
NAMA
Nikko Asset Management Americas New York $7.75B AUM 33.73% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

Susquehanna International Group's QSI Position: Q2 2026 in Review

Susquehanna International Group reduced its Quantum-Si Incorporated (QSI) stake by 24% in Q2 2026, selling an estimated $331K and leaving 1,116,750 shares worth $988K. The position accounts for ﹤0.01% of the portfolio, ranked #8230.

Susquehanna International Group first reported a position in QSI in Q1 2021 and has held it in 22 quarters since. The position peaked at $2.88M in Q3 2025. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • Susquehanna International Group held 1,116,750 shares of Quantum-Si Incorporated worth $988K as of Q2 2026.
  • Susquehanna International Group sold 347,818 Quantum-Si Incorporated shares in Q2 2026, an estimated $331K.
  • Quantum-Si Incorporated made up ﹤0.01% of Susquehanna International Group's portfolio in Q2 2026, its #8230 holding.
  • Susquehanna International Group first reported a position in Quantum-Si Incorporated in Q1 2021 and has held it in 22 quarters since.
  • Susquehanna International Group's Quantum-Si Incorporated position peaked at $2.88M in Q3 2025.
  • 141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.