Pathstone Holdings
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Pathstone Holdings’s Quantum-Si Incorporated QSI Stock Holding History

Pathstone Holdings’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
2025
Q4 		– Sell
-183,934
Closed -$259K – 2351
2025
Q3 		$259K Sell
183,934
-14,864
-7% -$21.5K ﹤0.01% 2084
2025
Q2 		$390K Sell
198,798
-15,511
-7% -$22.9K ﹤0.01% 1824
2025
Q1 		$257K Buy
214,309
+85,725
+67% +$164K ﹤0.01% 1977
2024
Q4 		$347K Sell
128,584
-15,209
-11% -$17.8K ﹤0.01% 1892
2024
Q3 		$127K Buy
143,793
+28,537
+25% +$27.7K ﹤0.01% 2230
2024
Q2 		$121K Sell
115,256
-191
-0.2% -$306 ﹤0.01% 2215
2024
Q1 		$227K Sell
115,447
-295
-0.3% -$515 ﹤0.01% 2080
2023
Q4 		$233K Buy
+115,742
New +$176K ﹤0.01% 1983

Other funds holding QSI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
AIM
ARK Investment Management St. Petersburg, Florida $15.4B AUM 50.29% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return
NAMA
Nikko Asset Management Americas New York $7.75B AUM 33.73% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.91% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

Pathstone Holdings's QSI Position: Q4 2025 in Review

Pathstone Holdings sold out of Quantum-Si Incorporated (QSI) in Q4 2025, closing a stake of 183,934 shares — an estimated $259K sold.

Pathstone Holdings first reported a position in QSI in Q4 2023 and held it in 8 quarters. The position peaked at $390K in Q2 2025. 135 funds tracked by Wall St. Rank hold QSI as of Q4 2025.

  • Pathstone Holdings reported no remaining Quantum-Si Incorporated position as of Q4 2025 after selling out during the quarter.
  • Pathstone Holdings sold 183,934 Quantum-Si Incorporated shares in Q4 2025, an estimated $259K.
  • Pathstone Holdings first reported a position in Quantum-Si Incorporated in Q4 2023 and held it in 8 quarters.
  • Pathstone Holdings's Quantum-Si Incorporated position peaked at $390K in Q2 2025.
  • 135 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q4 2025.

Based on Pathstone Holdings's 13F filing for Q4 2025, filed 13 Feb 2026.