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

Vanguard 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 		$6.71M Buy
7,578,208
+556,301
+8% +$530K ﹤0.01% 3008
2026
Q1 		$5.43M Buy
+7,021,907
New +$7.28M ﹤0.01% 3029

Other funds holding QSI

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
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return

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

Vanguard Capital Management increased its Quantum-Si Incorporated (QSI) stake by 7.9% in Q2 2026, buying an estimated $530K and bringing the position to 7,578,208 shares worth $6.71M. The position accounts for ﹤0.01% of the portfolio, ranked #3008.

Vanguard Capital Management first reported a position in QSI in Q1 2026 and has held it in 2 quarters since. 138 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

  • Vanguard Capital Management held 7,578,208 shares of Quantum-Si Incorporated worth $6.71M as of Q2 2026.
  • Vanguard Capital Management bought 556,301 Quantum-Si Incorporated shares in Q2 2026, an estimated $530K.
  • Quantum-Si Incorporated made up ﹤0.01% of Vanguard Capital Management's portfolio in Q2 2026, its #3008 holding.
  • Vanguard Capital Management first reported a position in Quantum-Si Incorporated in Q1 2026 and has held it in 2 quarters since.
  • 138 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

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