Fortitude Family Office’s Quantum-Si Incorporated QSI Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$1.1K Buy
+1,245
New +$1.19K ﹤0.01% 1718
2024
Q4
Sell
-1,462
Closed -$1.29K 1365
2024
Q3
$1.29K Buy
+1,462
New +$1.42K ﹤0.01% 1070

Other funds holding QSI

Fortitude Family Office's QSI Position: Q2 2026 in Review

Fortitude Family Office opened a new position in Quantum-Si Incorporated (QSI) in Q2 2026: 1,245 shares worth $1.1K. The stake represents ﹤0.01% of the portfolio and ranks #1718 among its holdings. This is a return to the name: Fortitude Family Office previously reported a position in QSI as recently as Q3 2024.

Fortitude Family Office first reported a position in QSI in Q3 2024 and has held it in 2 quarters since. The position peaked at $1.29K in Q3 2024. 25 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • Fortitude Family Office held 1,245 shares of Quantum-Si Incorporated worth $1.1K as of Q2 2026.
  • Quantum-Si Incorporated was a new Fortitude Family Office position in Q2 2026.
  • Quantum-Si Incorporated made up ﹤0.01% of Fortitude Family Office's portfolio in Q2 2026, its #1718 holding.
  • Fortitude Family Office first reported a position in Quantum-Si Incorporated in Q3 2024 and has held it in 2 quarters since.
  • Fortitude Family Office's Quantum-Si Incorporated position peaked at $1.29K in Q3 2024.
  • 25 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on Fortitude Family Office's 13F filing for Q2 2026, filed 20 Jul 2026.