
Quantum-Si (QSI) After-Hours
Date | After-hours Price | After-hours High | After-hours Low |
---|---|---|---|
Jul 24, 2025 | $1.87 | $1.89 | $1.83 |
Data last updated Jul 24, 2025 8:00 PM EST.
Quantum-Si (QSI) After-Hours Trading Summary
As of 8:00:00 PM EST on July 24, Quantum-Si (QSI) is trading at $1.87 in the after-hours session, down -$0.01 (-0.58%) from the regular market close of $1.88.
During after-hours trading, Quantum-Si (QSI) stock has ranged between $1.89 and $1.83, with the most recent trade recorded at $1.87.
How to Buy or Trade Quantum-Si (QSI) After Market Close
Looking to trade Quantum-Si stock (QSI) after the market closes? Public offers access to after-hours trading from 4:00 PM to 8:00 PM ET, giving investors the flexibility to place trades outside of regular market hours. Keep in mind that extended-hours trading may involve lower liquidity and wider bid-ask spreads than normal sessions. Follow the steps below to get started.
- 1
Create a Public brokerage account
Sign up for a free brokerage account with Public. You can open an account directly on the website or by downloading the Public app for iOS or Android.
- 2
Deposit funds into your account
Add funds to your Public account by linking a bank account, using a debit card, or initiating a wire transfer, so you’re ready to invest during extended hours.
- 3
Find Quantum-Si (QSI) stock and place your after-hours order
Go to the Explore tab and type “Quantum-Si” or “QSI” into the search bar. Select the stock from the results to view its quote page. From there, you can enter the amount you’d like to invest and place an after-hours order directly.
Quantum-Si (QSI) After-Hours Price History
Date | Market close price | After-hours price | Change |
---|---|---|---|
Jul 23, 2025 | $1.87 | $1.87 | +0.05% |
Jul 22, 2025 | $1.78 | $1.80 | +1.12% |
Jul 21, 2025 | $1.73 | $1.72 | -0.58% |
Jul 18, 2025 | $1.75 | $1.76 | +0.57% |
Jul 17, 2025 | $1.82 | $1.82 | +0.01% |
Jul 16, 2025 | $1.78 | $1.80 | +1.12% |