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Principal Securities’s Quantum-Si Incorporated QSI Stock Holding History

Principal Securities’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
-6,641
Closed -$9.36K – 3006
2025
Q3 		$9.36K Hold
6,641
– – ﹤0.01% 2746
2025
Q2 		$13K Buy
6,641
+1,729
+35% +$2.56K ﹤0.01% 2511
2025
Q1 		$13.3K Hold
4,912
– – ﹤0.01% 2405
2024
Q4 		$13.3K Buy
4,912
+3,775
+332% +$4.42K ﹤0.01% 2401
2024
Q3 		$1K Buy
1,137
+553
+95% +$537 ﹤0.01% 3141
2024
Q2 		$613 Sell
584
-113
-16% -$181 ﹤0.01% 3165
2024
Q1 		$1.37K Sell
697
-194
-22% -$339 ﹤0.01% 2964
2023
Q4 		$1.79K Buy
+891
New +$1.36K ﹤0.01% 2840

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 40.89% 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

Principal Securities's QSI Position: Q4 2025 in Review

Principal Securities sold out of Quantum-Si Incorporated (QSI) in Q4 2025, closing a stake of 6,641 shares — an estimated $9.36K sold.

Principal Securities first reported a position in QSI in Q4 2023 and held it in 8 quarters. The position peaked at $13.3K in Q1 2025. 135 funds tracked by Wall St. Rank hold QSI as of Q4 2025.

  • Principal Securities reported no remaining Quantum-Si Incorporated position as of Q4 2025 after selling out during the quarter.
  • Principal Securities sold 6,641 Quantum-Si Incorporated shares in Q4 2025, an estimated $9.36K.
  • Principal Securities first reported a position in Quantum-Si Incorporated in Q4 2023 and held it in 8 quarters.
  • Principal Securities's Quantum-Si Incorporated position peaked at $13.3K in Q1 2025.
  • 135 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q4 2025.

Based on Principal Securities's 13F filing for Q4 2025, filed 12 Feb 2026.