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Red Reef Advisors’s Quantum-Si Incorporated QSI Stock Holding History

Red Reef Advisors’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 		$8.85K Hold
10,000
– – 0.01% 170
2026
Q1 		$7.74K Hold
10,000
– – 0.01% 166
2025
Q4 		$11K Buy
+10,000
New +$16.3K 0.01% 156

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

Red Reef Advisors's QSI Position: Q2 2026 in Review

Red Reef Advisors held its Quantum-Si Incorporated (QSI) position steady in Q2 2026 at 10,000 shares worth $8.85K. The position accounts for 0.01% of the portfolio, ranked #170.

Red Reef Advisors first reported a position in QSI in Q4 2025 and has held it in 3 quarters since. The position peaked at $11K in Q4 2025. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • Red Reef Advisors held 10,000 shares of Quantum-Si Incorporated worth $8.85K as of Q2 2026.
  • Red Reef Advisors left its Quantum-Si Incorporated share count unchanged in Q2 2026.
  • Quantum-Si Incorporated made up 0.01% of Red Reef Advisors's portfolio in Q2 2026, its #170 holding.
  • Red Reef Advisors first reported a position in Quantum-Si Incorporated in Q4 2025 and has held it in 3 quarters since.
  • Red Reef Advisors's Quantum-Si Incorporated position peaked at $11K in Q4 2025.
  • 141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on Red Reef Advisors's 13F filing for Q2 2026, filed 23 Jul 2026.