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MAI Capital Management’s Quantum-Si Incorporated QSI Stock Holding History

MAI Capital Management’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 		– Sell
-1,274
Closed -$987 – 4098
2026
Q1 		$987 Buy
+1,274
New +$1.32K ﹤0.01% 4181

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

MAI Capital Management's QSI Position: Q2 2026 in Review

MAI Capital Management sold out of Quantum-Si Incorporated (QSI) in Q2 2026, closing a stake of 1,274 shares — an estimated $987 sold.

MAI Capital Management first reported a position in QSI in Q1 2026 and held it in 1 quarter. The position peaked at $987 in Q1 2026. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • MAI Capital Management reported no remaining Quantum-Si Incorporated position as of Q2 2026 after selling out during the quarter.
  • MAI Capital Management sold 1,274 Quantum-Si Incorporated shares in Q2 2026, an estimated $987.
  • MAI Capital Management first reported a position in Quantum-Si Incorporated in Q1 2026 and held it in 1 quarter.
  • MAI Capital Management's Quantum-Si Incorporated position peaked at $987 in Q1 2026.
  • 141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on MAI Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.