$QSI
Quantum-Si Incorporated Class A Common Stock
XNAS•Other•Measuring & Controlling Devices, Nec
Why is QSI up today? It is at $0.840 (+7.71%), and our scanner flagged it 43 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment QSI spikes, and full due diligence on QSI — key stats, earnings, dilution and insider activity. Free.
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Key Stats
- Price
- $0.840
- Change today
- +7.71%
- Previous close
- $0.780
- 52-week range
- $0.690 – $3.10
- Market cap
- $183M
- Shares outstanding
- 218.9M Live vendor count
- Institutional own.
- 31.49%
- Total held
- 44.2%
- Tradeable float
- 122.2M 56% of shares · after 13% insiders + 31% institutions
- Short interest
- 15.4M ▲ +9% vs prior · as of 2026-07-31
- Short % of float
- 12.6%
- Days to cover
- 5.9d
- Avg daily volume
- 6.5M
- Sector
- Other
- Industry
- Measuring & Controlling Devices, Nec
- Exchange
- XNAS
- 5mthin
- 0.1x
- 15mthin
- 0.1x
- 1hthin
- 0.8x
- 1D
- --
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Why is $QSI up today?
Here is the latest on QSI from our scanner (live price and day move above). A move this size is almost always tied to a specific catalyst. Most of the time that is an earnings report, a guidance update, or a company announcement. If none is shown above, the release may not be in our news feed yet. It will show up here as soon as it is.
Likely catalystQuantum-Si Inc: Q2 FY2026 results, three months to Jun 30, 2026, from the latest SEC filing. Read it →Analyst data via Nasdaq. Not investment advice.
Insiders
Insiders selling0 buys, 8 sells last 3 months (6/35 over 12 months)Show 12 recent transactionsMinimize 12 recent transactions
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Hawkins Jeffrey Alan Officer | Sold (automatic/other) | -11K | sold 0.3% | 3.67M | $10K at $0.900 | Jun 23, 26 |
Vieceli John S. Officer | Sold (automatic/other) | -15K | sold 1.3% | 1.14M | $14K at $0.900 | Jun 23, 26 |
Keyes Jeffry R. Officer | Sold (automatic/other) | -4K | sold 0.2% | 1.72M | $4K at $0.900 | Jun 23, 26 |
Lapointe Christian Officer | Sold (automatic/other) | -8K | sold 0.7% | 1.18M | $7K at $0.900 | Jun 23, 26 |
Hawkins Jeffrey Alan Officer | Sold (automatic/other) | -11K | sold 0.3% | 3.68M | $11K at $0.960 | Jun 22, 26 |
Vieceli John S. Officer | Sold (automatic/other) | -15K | sold 1.3% | 1.16M | $15K at $0.960 | Jun 22, 26 |
Keyes Jeffry R. Officer | Sold (automatic/other) | -4K | sold 0.2% | 1.73M | $4K at $0.960 | Jun 22, 26 |
Lapointe Christian Officer | Sold (automatic/other) | -8K | sold 0.7% | 1.19M | $7K at $0.960 | Jun 22, 26 |
Hawkins Jeffrey Alan Officer | Sold (automatic/other) | -84K 0.04% of company | sold 2.2% | 3.69M | $83K at $0.990 | Apr 21, 26 |
Keyes Jeffry R. Officer | Sold (automatic/other) | -37K 0.02% of company | sold 2.1% | 1.73M | $37K at $0.990 | Apr 21, 26 |
Hawkins Jeffrey Alan Officer | Sold (automatic/other) | -84K 0.04% of company | sold 2.2% | 3.78M | $85K at $1.01 | Apr 20, 26 |
Keyes Jeffry R. Officer | Sold (automatic/other) | -37K 0.02% of company | sold 2.1% | 1.77M | $38K at $1.01 | Apr 20, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
$QSI Sentiment
BullishBlend of news sentiment, today’s move, and community votes. Not investment advice.
$QSI Activity
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.
Stocks similar to QSI
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QSI stock FAQ
Why is $QSI up today?
Here is the latest on QSI from our scanner (live price and day move above). A move this size is almost always tied to a specific catalyst. Most of the time that is an earnings report, a guidance update, or a company announcement. If none is shown above, the release may not be in our news feed yet. It will show up here as soon as it is.
What is the QSI stock price today?
QSI last traded at $0.840, up 7.71% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Where can I see live QSI alerts?
The QSI Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged QSI 43 times in the last 30 days.
What exchange is QSI on?
QSI (Quantum-Si Incorporated Class A Common Stock) trades on XNAS, with a market cap of about $183M in the MEASURING & CONTROLLING DEVICES, NEC sector.
Is QSI good for day trading?
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge QSI for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.