Quantum-Si (QSI) Latest Stock Analysis Report – Oct 15, 2026, 4:00 PM ET
Updated Oct 15, 2026, 4:00 PM ET
- Closed at $1.31, -5.76% vs the prior close of $1.39.
- Volume 9.24M shares, 1.7x its 50-day average.
- New SEC filings: 8-K (Oct 15, 2026).
- No new insider buys or sales reported since the prior session.
QSI slides 5.8% to $1.31. Closed at $1.31, -5.76% vs the prior close of $1.39. Day range $1.24–$1.39, opened at $1.35.
QSI daily analysis — what happened
A plain-English, data-only note written after every US trading day. Newest first; older days stay archived below.
Oct 15, 2026 — QSI slides 5.8% to $1.31
- Closed at $1.31, -5.76% vs the prior close of $1.39. Day range $1.24–$1.39, opened at $1.35.
- Volume was 9.24M shares, 1.7x its 50-day average of 5.60M.
- Price is +43.6% vs its 50-day average ($0.91) and +37.4% vs its 200-day average ($0.95).
- 52-week range $0.69–$3.10; today's close sits at 26% of that range, 57.7% below the 52-week high.
- SEC filings that day: 8-K.
Oct 14, 2026 — QSI dips 1.4% to $1.39
- Closed at $1.39, -1.42% vs the prior close of $1.41. Day range $1.33–$1.44, opened at $1.34.
- Volume was 5.36M shares, 1.0x its 50-day average of 5.57M.
- Price is +54.3% vs its 50-day average ($0.90) and +45.8% vs its 200-day average ($0.95).
- 52-week range $0.69–$3.10; today's close sits at 29% of that range, 55.2% below the 52-week high.
Oct 13, 2026 — QSI jumps 3.7% to $1.41
- Closed at $1.41, +3.68% vs the prior close of $1.36. Day range $1.31–$1.46, opened at $1.35.
- Volume was 6.24M shares, 1.1x its 50-day average of 5.50M.
- Price is +58.7% vs its 50-day average ($0.89) and +48.1% vs its 200-day average ($0.95).
- 52-week range $0.69–$3.10; today's close sits at 30% of that range, 54.5% below the 52-week high.
Oct 12, 2026 — QSI slides 11.1% to $1.36 on 1.9x normal volume
- Closed at $1.36, -11.11% vs the prior close of $1.53. Day range $1.34–$1.48, opened at $1.48.
- Volume was 10.36M shares, 1.9x its 50-day average of 5.33M — unusually heavy trading.
- Price is +55.4% vs its 50-day average ($0.88) and +42.9% vs its 200-day average ($0.95).
- 52-week range $0.69–$3.10; today's close sits at 28% of that range, 56.1% below the 52-week high.
Oct 9, 2026 — QSI jumps 25.4% to $1.53 on 8.9x normal volume
- Closed at $1.53, +25.41% vs the prior close of $1.22. Day range $1.26–$1.66, opened at $1.26.
- Volume was 40.90M shares, 8.9x its 50-day average of 4.59M — unusually heavy trading.
- Price is +77.4% vs its 50-day average ($0.86) and +60.9% vs its 200-day average ($0.95).
- 52-week range $0.69–$3.10; today's close sits at 35% of that range, 50.6% below the 52-week high.
Oct 8, 2026 — QSI slides 4.7% to $1.22
- Closed at $1.22, -4.69% vs the prior close of $1.28. Day range $1.20–$1.30, opened at $1.29.
- Volume was 5.85M shares, 1.3x its 50-day average of 4.55M.
- Price is +44.2% vs its 50-day average ($0.85) and +28.4% vs its 200-day average ($0.95).
- 52-week range $0.69–$3.10; today's close sits at 22% of that range, 60.6% below the 52-week high.
- SEC filings that day: 8-K.
Oct 7, 2026 — QSI jumps 4.9% to $1.28 on 1.8x normal volume
- Closed at $1.28, +4.92% vs the prior close of $1.22. Day range $1.09–$1.31, opened at $1.17.
- Volume was 8.04M shares, 1.8x its 50-day average of 4.46M — unusually heavy trading.
- Price is +53.2% vs its 50-day average ($0.84) and +34.7% vs its 200-day average ($0.95).
- 52-week range $0.69–$3.10; today's close sits at 24% of that range, 58.7% below the 52-week high.
Oct 6, 2026 — QSI slides 4.7% to $1.22 on 2.0x normal volume
- Closed at $1.22, -4.69% vs the prior close of $1.28. Day range $1.19–$1.41, opened at $1.29.
- Volume was 8.70M shares, 2.0x its 50-day average of 4.30M — unusually heavy trading.
- Price is +47.8% vs its 50-day average ($0.83) and +28.5% vs its 200-day average ($0.95).
- 52-week range $0.69–$3.10; today's close sits at 22% of that range, 60.6% below the 52-week high.
Oct 5, 2026 — QSI slides 17.4% to $1.28 on 4.8x normal volume
- Closed at $1.28, -17.42% vs the prior close of $1.55. Day range $1.26–$1.53, opened at $1.52.
- Volume was 19.18M shares, 4.8x its 50-day average of 3.97M — unusually heavy trading.
- Price is +56.7% vs its 50-day average ($0.82) and +34.8% vs its 200-day average ($0.95).
- 52-week range $0.69–$3.10; today's close sits at 24% of that range, 58.7% below the 52-week high.
Oct 2, 2026 — QSI jumps 8.4% to $1.55, a 6-month high on 5.1x normal volume
- Closed at $1.55, +8.39% vs the prior close of $1.43. Day range $1.17–$1.55, opened at $1.38.
- Volume was 18.77M shares, 5.1x its 50-day average of 3.66M — unusually heavy trading.
- Price is +92.2% vs its 50-day average ($0.81) and +63.3% vs its 200-day average ($0.95).
- 52-week range $0.69–$3.10; today's close sits at 36% of that range, 50.0% below the 52-week high.
- That makes 4 straight gains.
QSI latest news & SEC filings
Every SEC filing by or about QSI in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Oct 15, 2026 · 8-K — Current report
Current report — a filing companies must make within 4 business days of a major event
- Item 8.01 — Reported other events the company considers important.
Oct 8, 2026 · 8-K — Current report
Current report — a filing companies must make within 4 business days of a major event
- Item 7.01 — Released information under Regulation FD (e.g. a presentation or press release).
Sep 29, 2026 · 8-K — Current report
Current report — a filing companies must make within 4 business days of a major event
- Item 7.01 — Released information under Regulation FD (e.g. a presentation or press release).
Sep 23, 2026 · 4 — Insider trade report (Form 4)
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Hawkins Jeffrey Alan sold 20,143 shares at $0.76 (≈$15.22K) on Sep 21, 2026; now holds 3,649,659
- Hawkins Jeffrey Alan sold 9,709 shares at $0.76 (≈$7.39K) on Sep 22, 2026; now holds 3,639,950
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 23, 2026 · 4 — Insider trade report (Form 4)
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Keyes Jeffry R. sold 5,172 shares at $0.76 (≈$3.91K) on Sep 21, 2026; now holds 1,719,177
- Keyes Jeffry R. sold 2,493 shares at $0.76 (≈$1.90K) on Sep 22, 2026; now holds 1,716,684
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 23, 2026 · 4 — Insider trade report (Form 4)
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Lapointe Christian sold 9,795 shares at $0.76 (≈$7.40K) on Sep 21, 2026; now holds 1,172,634
- Lapointe Christian sold 4,721 shares at $0.76 (≈$3.59K) on Sep 22, 2026; now holds 1,167,913
Open-market purchases (P) and sales (S) are shown in colour; awards, exercises and tax withholding are routine pay-related moves. Many sales are pre-planned under 10b5-1 plans.
Sep 23, 2026 · 144 — Notice of proposed sale (Form 144)
Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares
A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.
Sep 23, 2026 · 144 — Notice of proposed sale (Form 144)
Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares
A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.
Sep 23, 2026 · 144 — Notice of proposed sale (Form 144)
Notice of proposed sale (Form 144) — an insider or affiliate plans to sell restricted or control shares
A notice of intent, not a completed sale. Any actual sale by a director or officer shows up later on Form 4.
Aug 28, 2026 · SCHEDULE 13D/A — Update to a 13D 5%+ stake disclosure
Update to a 13D 5%+ stake disclosure
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Aug 13, 2026 · 10-Q — Quarterly report (unaudited financial statements for the quarter)
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Jun 30, 2026:
- Revenue: $344.00K (prior year $591.00K) (-41.8% vs Jun 30, 2025)
- Net income: -$23.53M (prior year -$28.84M) (loss narrowed vs Jun 30, 2025)
- Diluted EPS: -$0.11 (prior year -$0.16) (loss narrowed vs Jun 30, 2025)
Aug 13, 2026 · 8-K — Current report
Current report — a filing companies must make within 4 business days of a major event
- Item 2.02 — Reported results of operations (earnings release).
This is a results-day filing: the earnings press release is attached as an exhibit.
Jul 29, 2026 · SCHEDULE 13G/A — Update to a passive 5%+ stake (13G)
Update to a passive 5%+ stake (13G)
Filed by an outside investor (not the company). It reports a holding of more than 5% of a share class; percentage and holder name are in the filing.
Jul 24, 2026 · 8-K — Current report
Current report — a filing companies must make within 4 business days of a major event
- Item 3.01 — Stock exchange listing notice or transfer of listing.
Jun 24, 2026 · 8-K — Current report
Current report — a filing companies must make within 4 business days of a major event
- Item 1.01 — Signed a material agreement.
- Item 2.03 — Took on a new material debt or financial obligation.
Things to know before you trade QSI
- Last results release: Aug 13, 2026 (8-K Item 2.02). Previous ones: May 7, 2026, Mar 3, 2026, Nov 5, 2025. Based on that rhythm, the next report is likely around Nov 12, 2026 — an estimate, not a confirmed date.
- How much it moves: over the last 20 sessions the average daily move was 8.98% (largest 33.6%). That is a volatile stock.
- Liquidity: about 10.75M shares (≈$14.09M) trade per day on average.
- 52-week position: $1.31 vs a range of $0.69–$3.10 (26% of the range).
- Dividends: no cash dividends in the last 2 years.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 0 open-market buys, 25 sales; latest: Christian Lapointe sold 4,721 shares on Sep 22, 2026.
- Latest filings: 8-K Oct 15, 2026; 8-K Oct 8, 2026; 8-K Sep 29, 2026.
- Listing: Nasdaq · industry: Measuring & Controlling Devices, NEC.
QSI market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 15, 2026 | 1.35 | 1.39 | 1.24 | 1.31 | 9.24M |
| Oct 14, 2026 | 1.34 | 1.44 | 1.33 | 1.39 | 5.36M |
| Oct 13, 2026 | 1.35 | 1.46 | 1.31 | 1.41 | 6.24M |
| Oct 12, 2026 | 1.48 | 1.48 | 1.34 | 1.36 | 10.36M |
| Oct 9, 2026 | 1.26 | 1.66 | 1.26 | 1.53 | 40.90M |
| Oct 8, 2026 | 1.29 | 1.30 | 1.20 | 1.22 | 5.85M |
| Oct 7, 2026 | 1.17 | 1.31 | 1.09 | 1.28 | 8.04M |
| Oct 6, 2026 | 1.29 | 1.41 | 1.19 | 1.22 | 8.70M |
| Oct 5, 2026 | 1.52 | 1.53 | 1.26 | 1.28 | 19.18M |
| Oct 2, 2026 | 1.38 | 1.55 | 1.17 | 1.55 | 18.77M |
| Oct 1, 2026 | 1.20 | 1.48 | 1.15 | 1.43 | 33.06M |
| Sep 30, 2026 | 0.96 | 1.12 | 0.96 | 1.07 | 13.84M |
| Sep 29, 2026 | 0.81 | 1.03 | 0.81 | 0.96 | 23.01M |
| Sep 28, 2026 | 0.82 | 0.83 | 0.80 | 0.80 | 1.56M |
| Sep 25, 2026 | 0.79 | 0.84 | 0.78 | 0.83 | 2.59M |
| Sep 24, 2026 | 0.75 | 0.80 | 0.74 | 0.79 | 1.59M |
| Sep 23, 2026 | 0.79 | 0.81 | 0.75 | 0.76 | 1.48M |
| Sep 22, 2026 | 0.76 | 0.79 | 0.75 | 0.79 | 2.43M |
| Sep 21, 2026 | 0.76 | 0.77 | 0.75 | 0.76 | 1.12M |
| Sep 18, 2026 | 0.79 | 0.80 | 0.74 | 0.75 | 1.71M |
About Quantum-Si
Quantum-Si (QSI) is listed on the Nasdaq and classified by the SEC under “Measuring & Controlling Devices, NEC”. Its business address is in BRANFORD, CT. State of incorporation: DE. Fiscal year ends December 31. SEC CIK 1816431.
QSI board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| Paula Dowdy | Director | May 20, 2026 |
| Ruth A Fattori | Director | May 20, 2026 |
| Jeffrey Alan Hawkins | President & CEO | Sep 23, 2026 |
| Amir Jafri | Director | May 20, 2026 |
| John P. Kenny | Director | May 20, 2026 |
| Charles R. Kummeth | Director | May 20, 2026 |
| Brigid Makes | Director | May 20, 2026 |
| Scott Mendel | Director | May 20, 2026 |
| Kevin Rakin | Director | May 20, 2026 |
| Jonathan M Rothberg | Director | May 20, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| Jeffrey Alan Hawkins | President & CEO | Sep 23, 2026 |
| Jeffry R. Keyes | Chief Financial Officer | Sep 23, 2026 |
| Christian Lapointe | GC & Corp. Secretary | Sep 23, 2026 |
| John S. Vieceli | Chief Product Officer | Jun 24, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Sep 22, 2026 | Christian Lapointe | Sale | 4,721 | $0.76 |
| Sep 22, 2026 | Jeffrey Alan Hawkins | Sale | 9,709 | $0.76 |
| Sep 22, 2026 | Jeffry R. Keyes | Sale | 2,493 | $0.76 |
| Sep 21, 2026 | Christian Lapointe | Sale | 9,795 | $0.76 |
| Sep 21, 2026 | Jeffrey Alan Hawkins | Sale | 20,143 | $0.76 |
| Sep 21, 2026 | Jeffry R. Keyes | Sale | 5,172 | $0.76 |
| Jun 23, 2026 | John S. Vieceli | Sale | 15,112 | $0.90 |
| Jun 23, 2026 | Jeffrey Alan Hawkins | Sale | 11,311 | $0.90 |
| Jun 23, 2026 | Christian Lapointe | Sale | 7,794 | $0.90 |
| Jun 23, 2026 | Jeffry R. Keyes | Sale | 4,117 | $0.90 |
| Jun 22, 2026 | John S. Vieceli | Sale | 15,111 | $0.96 |
| Jun 22, 2026 | Jeffrey Alan Hawkins | Sale | 11,310 | $0.96 |
| Jun 22, 2026 | Christian Lapointe | Sale | 7,794 | $0.96 |
| Jun 22, 2026 | Jeffry R. Keyes | Sale | 4,116 | $0.96 |
| Apr 21, 2026 | Jeffrey Alan Hawkins | Sale | 83,712 | $1.00 |
QSI financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| Dec 31, 2025 | $2.44M | $-101.34M | -0.51 | $-94.72M |
| Dec 31, 2024 | $3.06M | $-101.01M | -0.71 | $-87.80M |
| Dec 31, 2023 | $1.08M | $-95.96M | -0.68 | $-94.04M |
| Dec 31, 2022 | $0 | $-132.44M | -0.95 | $-90.56M |
| Dec 31, 2021 | $0 | $-94.99M | -1.19 | $-66.81M |
Latest balance sheet: total assets $193.57M, total liabilities $13.37M, cash $23.65M (as of Jun 30, 2026).
QSI earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| Aug 13, 2026 | 8-K Item 2.02 (results) | $0.79 |
| May 7, 2026 | 8-K Item 2.02 (results) | $0.98 |
| Mar 3, 2026 | 8-K Item 2.02 (results) | $0.95 |
| Nov 5, 2025 | 8-K Item 2.02 (results) | $1.80 |
| Aug 5, 2025 | 8-K Item 2.02 (results) | $1.44 |
| May 15, 2025 | 8-K Item 2.02 (results) | $1.48 |
| Mar 3, 2025 | 8-K Item 2.02 (results) | $1.30 |
| Nov 12, 2024 | 8-K Item 2.02 (results) | $0.77 |
| Aug 7, 2024 | 8-K Item 2.02 (results) | — |
| May 9, 2024 | 8-K Item 2.02 (results) | — |
| Feb 29, 2024 | 8-K Item 2.02 (results) | — |
| Nov 9, 2023 | 8-K Item 2.02 (results) | — |
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 15, 2026, 4:00 PM ET. Filings: SEC EDGAR. Updated after every US trading day.