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Jefferies Financial Group’s Quantum-Si Incorporated QSI Stock Holding History

Jefferies Financial 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
2025
Q2 		– Sell
-12,300
Closed -$14.8K – 1719
2025
Q1 		$14.8K Buy
+12,300
New +$23.6K ﹤0.01% 1547

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

Jefferies Financial Group's QSI Position: Q2 2026 in Review

Jefferies Financial Group opened a new position in Quantum-Si Incorporated (QSI) in Q2 2026: 11,350 shares worth $10K. The stake represents ﹤0.01% of the portfolio and ranks #1615 among its holdings. This is a return to the name: Jefferies Financial Group previously reported a position in QSI as recently as Q2 2025.

Jefferies Financial Group first reported a position in QSI in Q3 2024 and has held it in 4 quarters since. The position peaked at $99.6K in Q1 2025. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • Jefferies Financial Group held 11,350 shares of Quantum-Si Incorporated worth $10K as of Q2 2026.
  • Quantum-Si Incorporated was a new Jefferies Financial Group position in Q2 2026.
  • Quantum-Si Incorporated made up ﹤0.01% of Jefferies Financial Group's portfolio in Q2 2026, its #1615 holding.
  • Jefferies Financial Group first reported a position in Quantum-Si Incorporated in Q3 2024 and has held it in 4 quarters since.
  • Jefferies Financial Group's Quantum-Si Incorporated position peaked at $99.6K in Q1 2025.
  • 141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on Jefferies Financial Group's 13F filing for Q2 2026, filed 17 Aug 2026.