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QSI · Quantum-Si Incorporated Class A
NASDAQ NMS - GLOBAL MARKET - BOATS Real Time Price • USD
Quantum-Si Inc (QSI)
NASDAQ NMS - GLOBAL MARKET
Life Sciences Tools & Services
$1.22
+0.05
(+4.72%)
● At close: October 21 at 4:00:00 PM EDT
$1.22
-0.01
(-0.81%)
Overnight:
12:23:50 AM EDT
DAY'S RANGE
$1.22
$1.17
$1.22
52-WEEK RANGE
$1.22
$0.69
$2.73
What's happening
- QSI is up 4.72% today, trading at $1.22. — Live quote
- Volume today (160,684) is well below its 3-month average of 5,127,990. (Finnhub fundamentals)
- Reports earnings on 2026-11-05, 14 days away. (Finnhub earnings calendar)
- Last quarter's EPS beat estimates: $-0.11 actual vs. $-0.12 estimated (+6.6%). (Finnhub earnings history)
Deterministic template sentences filled in from the same sourced figures shown elsewhere on this page -- not an AI-written summary, no live model call.
Key Statistics
Analyst Recommendations
Strong buy 1
Buy 4
Hold 2
Sell 0
Strong sell 0
Aggregate ratings for 2026-10-01 (7 analysts polled by Finnhub) — consensus count.
Performance Overview (Trailing returns vs S&P 500 benchmark)
YTD RETURN
QSI
+5.45%
vs S&P 500
-7.32%
1-YEAR RETURN
QSI
-55.13%
vs S&P 500
-69.69%
6-MONTH RETURN
QSI
+11.54%
3-MONTH RETURN
QSI
+38.76%
Earnings Trends (Quarterly EPS Actual vs Estimate)
2026-07-26 (Q2 2026)
$-0.11
Est. $-0.12
BEAT +6.6%
2026-04-26 (Q1 2026)
$-0.10
Est. $-0.11
BEAT +10.0%
2026-01-26 (Q4 2025)
$-0.08
Est. $-0.12
BEAT +35.8%
2025-10-26 (Q3 2025)
$-0.17
Est. $-0.14
MISS -23.2%
Valuation Measures & Ratios
Enterprise Value4$245.6M
Forward P/E5—
PEG Ratio6—
Price / Sales (TTM1)167.74
Price / Book71.07
EV4 / Revenue153.01
EV4 / EBITDA—
Profit Margin-6138.26%
Operating Margin-6887.79%
Return on Equity (ROE8)-47.12%
Return on Assets (ROA9)-43.18%
Avg Volume (3M)5,127,990
Quarterly history (5 periods)
| Measure | Jun '26 | Mar '26 | Sep '25 | Jun '25 | Mar '25 |
|---|---|---|---|---|---|
| Market cap | $189.6M | $168.7M | $297.2M | $355.0M | $208.5M |
| P/E | -1.73 | -1.60 | -2.73 | -3.68 | -2.39 |
| Price/Sales | 108.66 | 75.20 | 107.21 | 124.93 | 76.98 |
| Price/Book | 1.05 | 0.84 | 1.26 | 1.61 | 0.84 |
| EV/Revenue | 95.11 | 59.06 | 96.06 | 117.12 | 63.21 |
| EV/EBITDA | -1.45 | -1.16 | -2.24 | — | — |
| ROE | -60.90% | -52.50% | -46.37% | -43.64% | -35.26% |
| ROA | -56.69% | -49.40% | -41.92% | -37.91% | -32.10% |
Trailing-twelve-month ratios computed from SEC EDGAR quarterly figures and historical daily close prices (Alpaca). Diluted shares are derived from Net income ÷ EPS (diluted) for each quarter, not separately reported. Forward P/E/PEG unavailable (no free data source).
Glossary — what these abbreviations mean
- 1. TTM
- Trailing twelve months — the sum of the last four reported quarters, not a calendar year or the single latest quarter.
- 2. EPS
- Earnings per share — net income divided by diluted shares outstanding.
- 3. Beta
- A stock's historical volatility relative to the overall market. Above 1 means it has moved more than the market; below 1, less.
- 4. EV (Enterprise Value)
- Market cap plus total debt minus cash — roughly what it would cost to buy the whole company, debt included.
- 5. Forward P/E
- Price divided by analysts' estimated earnings for the next 12 months, instead of trailing actual earnings.
- 6. PEG Ratio
- P/E divided by expected earnings growth rate. A lower number can indicate a stock is cheap relative to how fast it's expected to grow.
- 7. Price / Book
- Share price divided by book value (assets minus liabilities) per share.
- 8. ROE
- Return on equity — net income divided by shareholders' equity, a measure of how efficiently a company turns equity into profit.
- 9. ROA
- Return on assets — net income divided by total assets, a measure of how efficiently a company turns assets into profit.
- 10. MRQ
- Most recent quarter — the single latest reported period, as opposed to TTM. The Financials section's "Quarterly" view below shows MRQ-style figures.
- 11. YoY
- Year over year — percent change versus the same period one year earlier, used for growth figures like those on Compare cards and the Screener.
Short Interest
Shares Short11,830,534
Change from Prior Settlement-9.32%
% of Float—
Days to Cover (Short Ratio)2.46
Source: FINRA Rule 4560 consolidated short interest, settlement date 2026-09-30. Reported bi-monthly with a reporting lag — not real-time.
Quotes and the 1-day extended-hours chart: Yahoo Finance. Longer historical charts: Alpaca (IEX feed) — real-time but IEX-only volume (~2.5% of consolidated market volume). Fundamentals + earnings: Finnhub.
Price history
Events
Drag horizontally to zoom into a section; use Reset view to restore all observations.
Technical signal summary
Calculating from the latest year of daily price history…
Show Technical Analysis Breakdown ▾ 10 Indicators
Not investment advice — read several signals together.
Indicators None active
Loading chart…
History limited by data provider; markers are heuristics, not signals.
Peer and sector context
No reviewed peer group is available for this symbol.
Balanced evidence
A deterministic summary of sourced facts—not an AI verdict.
Potential strengths
- Latest SEC filing is Form 8-K, filed 2026-10-15; review it for current changes and risks. SEC EDGAR ↗
Potential concerns
- Revenue growth is -41.8% on the provider's reported measure. Finnhub fundamentals ↗
- Net profit margin is -6138.3%. Finnhub fundamentals ↗
- Trailing 52-week price return is -55.1%. Finnhub market metrics ↗
Rule-based facts only; absence from either side is not evidence, and this is not a recommendation.
More on QSI
No accessible free API for these — links go to the source directly.
Financials
Fundamental trends
Visualized from the same SEC figures in the tables below.
Income statement
| Line item | Jun '26 | Mar '26 | Sep '25 | Jun '25 | Mar '25 | Sep '24 | Jun '24 | Mar '24 |
|---|---|---|---|---|---|---|---|---|
| Revenue | $344.0K | $258.0K | $552.0K | $591.0K | $842.0K | $787.0K | $622.0K | $457.0K |
| Gross profit | $172.0K | $74.0K | $194.0K | $351.0K | $486.0K | $367.0K | $354.0K | $269.0K |
| Operating income | -$25.6M | -$24.1M | -$39.8M | -$30.1M | -$25.1M | -$28.1M | -$26.5M | -$23.4M |
| Net income | -$23.5M | -$21.7M | -$35.7M | -$28.8M | -$19.2M | -$25.3M | -$23.1M | -$19.5M |
| EPS (diluted) | $-0.11 | $-0.10 | $-0.17 | $-0.16 | $-0.11 | $-0.18 | $-0.16 | $-0.14 |
| EPS (basic) | $-0.11 | $-0.10 | $-0.17 | $-0.16 | $-0.11 | $-0.18 | $-0.16 | $-0.14 |
| Operating margin | -$7.5K | -$9.3K | -$7.2K | -$5.1K | -$3.0K | -$3.6K | -$4.3K | -$5.1K |
| Net margin | -$6.8K | -$8.4K | -$6.5K | -$4.9K | -$2.3K | -$3.2K | -$3.7K | -$4.3K |
Balance sheet
| Line item | Jun '26 | Mar '26 | Dec '25 | Sep '25 | Jun '25 | Mar '25 | Dec '24 | Sep '24 |
|---|---|---|---|---|---|---|---|---|
| Total assets | $193.6M | $213.3M | $245.6M | $260.1M | $254.4M | $271.2M | $247.9M | $236.5M |
| Total liabilities | $13.4M | $12.6M | $25.4M | $25.0M | $33.4M | $24.3M | $32.5M | $25.9M |
| Stockholders' equity | $180.2M | $200.7M | $220.2M | $235.2M | $221.0M | $246.9M | $215.4M | $210.5M |
| Total current assets | $119.1M | $135.0M | $175.9M | $238.0M | $226.5M | $241.8M | $218.0M | $205.8M |
| Total current liabilities | $11.9M | $10.7M | $23.0M | $22.1M | $24.0M | $12.6M | $18.2M | $15.3M |
| Cash & equivalents | $23.7M | $36.2M | $21.6M | $30.9M | $22.2M | $37.3M | $49.2M | $42.3M |
| Marketable securities (current) | — | — | — | — | — | — | — | — |
| Accounts receivable | $57.0K | $203.0K | $561.0K | $755.0K | $917.0K | $1.0M | $1.3M | $1.0M |
| Inventory | $2.0M | $2.2M | $3.2M | $3.5M | $3.9M | $4.4M | $4.1M | $4.1M |
| Property, plant & equipment | $10.9M | $12.0M | $13.2M | $13.4M | $15.3M | $16.2M | $16.0M | $16.3M |
| Goodwill | — | — | — | — | — | — | — | — |
| Intangible assets | — | — | — | — | — | — | $0 | $0 |
| Other non-current assets | $552.0K | $233.0K | $234.0K | $233.0K | $810.0K | $808.0K | $808.0K | $695.0K |
| Accounts payable | $1.6M | $1.8M | $1.6M | $1.3M | $2.2M | $1.9M | $1.9M | $2.2M |
| Deferred revenue (current) | $109.0K | $91.0K | $133.0K | $93.0K | $99.0K | — | $189.0K | — |
| Other non-current liabilities | $18.0K | $25.0K | $34.0K | $40.0K | $45.0K | $21.0K | $19.0K | $24.0K |
| Retained earnings | -$743.2M | -$719.7M | -$698.0M | -$680.4M | -$644.7M | -$615.8M | -$596.6M | -$563.5M |
| Accumulated other comprehensive income (loss) | -$441.0K | -$382.0K | -$6.0K | $54.0K | -$40.0K | -$2.0K | $45.0K | $153.0K |
Cash flow
| Line item | Jun '26 | Mar '26 | Dec '25 | Sep '25 | Jun '25 | Mar '25 | Dec '24 | Sep '24 |
|---|---|---|---|---|---|---|---|---|
| Operating cash flow | -$18.4M | -$25.6M | -$16.3M | -$32.0M | -$20.2M | -$26.2M | -$22.9M | -$23.2M |
| Investing cash flow | $8.1M | $40.3M | $7.0M | -$6.2M | $5.0M | -$34.2M | -$5.9M | $5.9M |
| Financing cash flow | $0 | $0 | $54.0K | $47.0M | $41.0K | $48.4M | $35.8M | $2.0K |
| Free cash flow | -$18.5M | -$25.9M | -$16.3M | -$32.9M | -$20.5M | -$27.5M | -$24.3M | -$24.1M |
| Capital expenditures | $78.0K | $279.0K | -$17.0K | $900.0K | $327.0K | $1.3M | $1.4M | $975.0K |
| Depreciation & amortization | $1.2M | $1.2M | $1.2M | $1.2M | $1.2M | $917.0K | $994.0K | $1.2M |
| Share-based compensation | $3.0M | $2.6M | $2.7M | $2.8M | $2.9M | $2.4M | $2.4M | $2.4M |
| Deferred income taxes | — | — | — | — | — | — | $0 | — |
| Change in accounts receivable | -$146.0K | -$358.0K | -$48.0K | -$162.0K | -$115.0K | -$301.0K | $435.0K | $424.0K |
| Change in inventory | $33.0K | $278.0K | $1.0M | $223.0K | -$327.0K | $1.1M | -$6.0M | -$123.0K |
| Change in accounts payable | -$176.0K | $316.0K | $145.0K | -$529.0K | $61.0K | -$15.0K | $301.0K | $194.0K |
| Purchases of investments | $24.9M | $64.2M | $109.4M | $103.6M | $71.9M | $119.7M | $107.4M | $53.3M |
Income statement
| Line item | Dec '25 | Dec '24 | Dec '23 | Dec '22 | Dec '21 |
|---|---|---|---|---|---|
| Revenue | $2.4M | $3.1M | $1.1M | $0 | $0 |
| Gross profit | $1.2M | $1.6M | $488.0K | $0 | $0 |
| Operating income | -$116.1M | -$108.6M | -$111.2M | -$123.8M | -$96.9M |
| Net income | -$101.3M | -$101.0M | -$96.0M | -$132.4M | -$95.0M |
| EPS (diluted) | $-0.51 | $-0.71 | $-0.68 | $-0.95 | $-1.19 |
| EPS (basic) | $-0.51 | $-0.71 | $-0.68 | $-0.95 | $-1.19 |
| Operating margin | -$4.8K | -$3.6K | -$10.3K | — | — |
| Net margin | -$4.2K | -$3.3K | -$8.9K | — | — |
Balance sheet
| Line item | Dec '25 | Dec '24 | Dec '23 | Dec '22 | Dec '21 |
|---|---|---|---|---|---|
| Total assets | $245.6M | $247.9M | $298.2M | $391.5M | $503.2M |
| Total liabilities | $25.4M | $32.5M | $26.6M | $32.8M | $26.2M |
| Stockholders' equity | $220.2M | $215.4M | $271.6M | $358.7M | $477.0M |
| Total current assets | $175.9M | $218.0M | $266.3M | $358.2M | $477.2M |
| Total current liabilities | $23.0M | $18.2M | $11.6M | $15.7M | $11.5M |
| Cash & equivalents | $21.6M | $49.2M | $133.9M | $84.3M | $35.8M |
| Marketable securities (current) | — | — | — | — | $435.5M |
| Accounts receivable | $561.0K | $1.3M | $368.0K | $0 | — |
| Inventory | $3.2M | $4.1M | $3.9M | $0 | — |
| Property, plant & equipment | $13.2M | $16.0M | $16.3M | $16.8M | $8.9M |
| Goodwill | — | — | — | $0 | $9.5M |
| Intangible assets | — | $0 | $532.0K | — | — |
| Other non-current assets | $234.0K | $808.0K | $695.0K | $697.0K | $690.0K |
| Accounts payable | $1.6M | $1.9M | $1.8M | $3.9M | $3.4M |
| Deferred revenue (current) | $133.0K | $189.0K | — | — | — |
| Other non-current liabilities | $34.0K | $19.0K | $11.0K | $0 | $206.0K |
| Retained earnings | -$698.0M | -$596.6M | -$495.6M | -$399.7M | -$267.2M |
| Accumulated other comprehensive income (loss) | -$6.0K | $45.0K | $0 | — | — |
Cash flow
| Line item | Dec '25 | Dec '24 | Dec '23 | Dec '22 | Dec '21 |
|---|---|---|---|---|---|
| Operating cash flow | -$94.7M | -$87.8M | -$94.0M | -$90.6M | -$66.8M |
| Investing cash flow | -$28.3M | -$32.7M | $143.4M | $137.2M | -$450.9M |
| Financing cash flow | $95.4M | $35.9M | $149.0K | $1.9M | $516.6M |
| Free cash flow | -$97.2M | -$92.4M | -$98.5M | -$101.3M | -$72.6M |
| Capital expenditures | $2.5M | $4.6M | $4.5M | $10.7M | $5.8M |
| Depreciation & amortization | $4.5M | $4.6M | $4.2M | $2.6M | $1.0M |
| Share-based compensation | $10.8M | $8.9M | $8.5M | $11.2M | $24.9M |
| Deferred income taxes | — | $0 | $0 | $0 | $0 |
| Change in accounts receivable | -$626.0K | $1.1M | $368.0K | $0 | $0 |
| Change in inventory | $2.0M | -$4.3M | -$286.0K | $0 | $0 |
| Change in accounts payable | -$338.0K | $390.0K | -$1.2M | $721.0K | $709.0K |
| Purchases of investments | $404.6M | $369.4M | $123.8M | $834.0K | $440.5M |
Source: SEC EDGAR XBRL filings (10-Q/10-K), as originally tagged by the company. Quarterly cash flow is reconstructed by de-cumulating fiscal-year-to-date figures (how cash flow is tagged in 10-Qs); other quarterly lines are reported directly.
Institutional holders
SEC Form 13F filers holding QSI as of the latest reported quarter. 13F only covers investment managers with $100M+ in assets — this is not a complete ownership picture, and does not include insiders (see Recent SEC filings below) or non-13F-eligible holders.
Institutional ownership is not available for this symbol right now.
Insider activity
Directors, officers, and 10%+ owners' reported transactions from SEC Form 4. A filing reports a transaction; it does not by itself explain why it happened.
Source: SEC EDGAR Form 4 filings · checked 25 most recent filings · covers 2026-03-12 to 2026-09-22
Recent transactions
- Insiders have net sold 128,698 shares over the last 182 days, across 0 purchases and 14 sales.
- Most recent: Hawkins Jeffrey Alan (President & CEO) — Open market sale of 9,709 shares on 2026-09-22.
Deterministic template sentences filled in from the SEC Form 4 figures in the tables below -- not an AI-written summary, no live model call.
Insider purchases & sales, last 6 months
Purchases (open market)0 sh(0 txns)
Sales (open market)128,698 sh(14 txns)
Net Shares-128,698
Counts only open-market purchases (code P) and sales (code S) — grants, option exercises, tax withholding, and gifts are excluded since they aren't a market buy/sell decision.
Insider roster
| Name | Title | Most Recent Transaction | Date | Shares |
|---|---|---|---|---|
| Hawkins Jeffrey Alan | President & CEO | Open market sale | 2026-09-22 | 9,709 |
| Keyes Jeffry R. | Chief Financial Officer | Open market sale | 2026-09-22 | 2,493 |
| LaPointe Christian | GC & Corp. Secretary | Open market sale | 2026-09-22 | 4,721 |
| Vieceli John S. | Chief Product Officer | Open market sale | 2026-06-23 | 15,112 |
Recent transactions
| Date | Insider | Title | Transaction | Shares | Price |
|---|---|---|---|---|---|
| 2026-09-22 | Hawkins Jeffrey Alan | President & CEO | Open market sale | 9,709 | $0.76 |
| 2026-09-22 | Keyes Jeffry R. | Chief Financial Officer | Open market sale | 2,493 | $0.76 |
| 2026-09-22 | LaPointe Christian | GC & Corp. Secretary | Open market sale | 4,721 | $0.76 |
| 2026-09-21 | Hawkins Jeffrey Alan | President & CEO | Open market sale | 20,143 | $0.76 |
| 2026-09-21 | Keyes Jeffry R. | Chief Financial Officer | Open market sale | 5,172 | $0.76 |
| 2026-09-21 | LaPointe Christian | GC & Corp. Secretary | Open market sale | 9,795 | $0.76 |
| 2026-06-23 | LaPointe Christian | GC & Corp. Secretary | Open market sale | 7,794 | $0.90 |
| 2026-06-23 | Keyes Jeffry R. | Chief Financial Officer | Open market sale | 4,117 | $0.90 |
| 2026-06-23 | Vieceli John S. | Chief Product Officer | Open market sale | 15,112 | $0.90 |
| 2026-06-23 | Hawkins Jeffrey Alan | President & CEO | Open market sale | 11,311 | $0.90 |
| 2026-06-22 | LaPointe Christian | GC & Corp. Secretary | Open market sale | 7,794 | $0.96 |
| 2026-06-22 | Keyes Jeffry R. | Chief Financial Officer | Open market sale | 4,116 | $0.96 |
| 2026-06-22 | Vieceli John S. | Chief Product Officer | Open market sale | 15,111 | $0.96 |
| 2026-06-22 | Hawkins Jeffrey Alan | President & CEO | Open market sale | 11,310 | $0.96 |
| 2026-04-21 | Keyes Jeffry R. | Chief Financial Officer | Open market sale | 37,381 | $0.99 |
| 2026-04-21 | Hawkins Jeffrey Alan | President & CEO | Open market sale | 83,712 | $0.99 |
| 2026-04-20 | Keyes Jeffry R. | Chief Financial Officer | Open market sale | 37,382 | $1.01 |
| 2026-04-20 | Hawkins Jeffrey Alan | President & CEO | Open market sale | 83,712 | $1.01 |
| 2026-03-23 | Keyes Jeffry R. | Chief Financial Officer | Open market sale | 4,422 | $0.83 |
| 2026-03-23 | LaPointe Christian | GC & Corp. Secretary | Open market sale | 6,110 | $0.83 |
| 2026-03-23 | Vieceli John S. | Chief Product Officer | Open market sale | 11,239 | $0.83 |
| 2026-03-23 | Hawkins Jeffrey Alan | President & CEO | Open market sale | 12,149 | $0.83 |
| 2026-03-20 | Keyes Jeffry R. | Chief Financial Officer | Open market sale | 4,233 | $0.85 |
| 2026-03-20 | LaPointe Christian | GC & Corp. Secretary | Open market sale | 5,849 | $0.85 |
| 2026-03-20 | Vieceli John S. | Chief Product Officer | Open market sale | 10,758 | $0.85 |
| 2026-03-20 | Hawkins Jeffrey Alan | President & CEO | Open market sale | 11,628 | $0.85 |
| 2026-03-12 | Keyes Jeffry R. | Chief Financial Officer | Grant / award | 652,803 | $0.00 |
| 2026-03-12 | Vieceli John S. | Chief Product Officer | Grant / award | 391,681 | $0.00 |
| 2026-03-12 | Hawkins Jeffrey Alan | President & CEO | Grant / award | 1,305,606 | $0.00 |
Recent SEC filings
Official company reports and insider transaction filings. Form 4 reports a transaction; it does not by itself explain why it happened.
Source: SEC EDGAR submissions · updated 2026-10-22 06:16 UTC
| Filed | Form | Report period | Official filing |
|---|---|---|---|
| 2026-10-15 | 8-K | 2026-10-14 | View on SEC.gov → |
| 2026-10-08 | 8-K | 2026-10-08 | View on SEC.gov → |
| 2026-09-29 | 8-K | 2026-09-28 | View on SEC.gov → |
| 2026-09-23 | 4 | 2026-09-21 | View on SEC.gov → |
| 2026-09-23 | 4 | 2026-09-21 | View on SEC.gov → |
| 2026-09-23 | 4 | 2026-09-21 | View on SEC.gov → |
| 2026-08-13 | 10-Q | 2026-06-30 | View on SEC.gov → |
| 2026-08-13 | 8-K | 2026-08-13 | View on SEC.gov → |
| 2026-07-24 | 8-K | 2026-07-23 | View on SEC.gov → |
| 2026-06-24 | 4 | 2026-06-22 | View on SEC.gov → |
| 2026-06-24 | 4 | 2026-06-22 | View on SEC.gov → |
| 2026-06-24 | 4 | 2026-06-22 | View on SEC.gov → |
Recent news
Headlines about QSI (Quantum-Si Incorporated Class A). Links open the publisher — we don’t host full articles.
-
QSI Q2 2026 Earnings: Narrower-Than-Expected Loss Lifts Shares 2.16% - Guidance Update
https://www.dars.gov.et/ · 2026-10-21 -
QSI Oct 2026 0.500 call (QSI261023C00000500) Stock Price, News, Quote & History
Yahoo! Finance Canada · 2026-10-21 -
QSI Stock Holds Nasdaq Listing As Proteus Milestones Fuel Hype
Timothy Sykes · 2026-10-20 -
QSI Stock Holds Key Level As Proteus Milestones Pile Up
StocksToTrade · 2026-10-20 -
Weekly Recap: NASDAQ:QSI regains bid compliance and Q3 2026 results call
TradingView · 2026-10-19 -
Quantum-Si (NASDAQ:QSI) Stock Gets Downgrade from Wall Street Zen
MarketBeat · 2026-10-19 -
Quantum-Si to Provide a Business Update and Report Third Quarter 2026 Financial Results on November 5, 2026
Yahoo · 2026-10-16 -
QSI Oct 2026 0.500 call (QSI261016C00000500) Interactive Stock Chart
Yahoo! Finance Canada · 2026-10-16
No headlines in this category right now — try “All”.