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Q

Quantum-Si

QSI 1.12 -14.50%

Close of 16 October 2026, in USD — never converted.

Quantum-Si — daily QSI Delayed

Chart and prices are provided by TradingView. Global Banking & Finance Review publishes no price data on this page. Nothing here is investment advice. How we cover markets.

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Frequently asked questions

What is Quantum-Si's ticker?

Quantum-Si trades as QSI on its US listing, under ISIN US74765K1051.

What was Quantum-Si's last closing price?

1.12 on 16 October 2026. The figure is in USD and is never converted.

Does Global Banking & Finance Review publish price data for Quantum-Si?

We publish the closing prices we record ourselves, in the currency the instrument trades in. Charts and live quotes come from TradingView. Nothing on this page is investment advice.