Green Alpha Advisors’s Quantum-Si Incorporated QSI Stock Holding History

Green Alpha 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	$40.6K	Buy	45,921 +2,713	+6%	+$2.58K	0.03%	113
2026 Q1	$33.4K	Sell	43,208 -8,320	-16%	-$8.62K	0.03%	107
2025 Q4	$56.7K	Sell	51,528 -164,504	-76%	-$268K	0.05%	115
2025 Q3	$305K	Sell	216,032 -12,316	-5%	-$17.8K	0.29%	81
2025 Q2	$448K	Sell	228,348 -15,719	-6%	-$23.3K	0.43%	67
2025 Q1	$293K	Buy	244,067 +85,209	+54%	+$163K	0.31%	85
2024 Q4	$429K	Sell	158,858 -16,197	-9%	-$19K	0.34%	99
2024 Q3	$154K	Buy	175,055 +45,796	+35%	+$44.5K	0.12%	126
2024 Q2	$136K	Sell	129,259 -5,357	-4%	-$8.59K	0.11%	126
2024 Q1	$265K	Buy	134,616 +2,831	+2%	+$4.95K	0.19%	126
2023 Q4	$265K	Buy	131,785 +89,163	+209%	+$136K	0.19%	136
2023 Q3	$70.8K	Buy	+42,622	New	+$103K	0.05%	155

Other funds holding QSI

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 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 Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

Green Alpha Advisors's QSI Position: Q2 2026 in Review

Green Alpha Advisors increased its Quantum-Si Incorporated (QSI) stake by 6.3% in Q2 2026, buying an estimated $2.58K and bringing the position to 45,921 shares worth $40.6K. The position accounts for 0.03% of the portfolio, ranked #113.

Green Alpha Advisors first reported a position in QSI in Q3 2023 and has held it in 12 quarters since. The position peaked at $448K in Q2 2025. 141 funds tracked by Wall St. Rank hold QSI as of Q2 2026.

Green Alpha Advisors held 45,921 shares of Quantum-Si Incorporated worth $40.6K as of Q2 2026.
Green Alpha Advisors bought 2,713 Quantum-Si Incorporated shares in Q2 2026, an estimated $2.58K.
Quantum-Si Incorporated made up 0.03% of Green Alpha Advisors's portfolio in Q2 2026, its #113 holding.
Green Alpha Advisors first reported a position in Quantum-Si Incorporated in Q3 2023 and has held it in 12 quarters since.
Green Alpha Advisors's Quantum-Si Incorporated position peaked at $448K in Q2 2025.
141 funds tracked by Wall St. Rank held Quantum-Si Incorporated as of Q2 2026.

Based on Green Alpha Advisors's 13F filing for Q2 2026, filed 11 Aug 2026.