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Quantum Si shares owned by Harbour Investments

Quarter-by-quarter ownership of Quantum Si (QSI) shares owned by Harbour Investments from 13F filings

Historical chart of Harbour Investments investment in Quantum Si

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All positions including Quantum Si held by Harbour Investments consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Quantum Si by Harbour Investments

Quarter filed Position value Share count Share price at filing
2026-03-31 $194 250 0.78
2023-09-30 $33 20 1.65
2021-06-30 $1.0k 100 10.00

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Top funds holding Quantum Si

BlackRock
Vanguard Group
Vanguard Capital Management
ARK Investment Management
Sumitomo Mitsui Trust Holdings
Nikko Asset Management Americas
Geode Capital Management
State Street Corporation
Susquehanna International
AQR Capital Management
Northern Trust
UBS Group
Vanguard Portfolio Management
Vanguard Fiduciary Trust
Fosun International

View all funds holding Quantum Si