Adaptive Biotechnologies (ADPT) Stock: Why It Moved
Updated Oct 19, 2026, 4:00 PM ET · closing price
- Closed at $23.95, -0.29% vs the prior close of $24.02.
- Volume 1.19M shares, 0.5x its 50-day average (light).
- New SEC filings: 4 (Oct 16, 2026).
- No new insider buys or sales reported since the prior session.
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ADPT ends flat (-0.3%) to $23.95, a 1-month low, 3 down days in a row. Closed at $23.95, -0.29% vs the prior close of $24.02. Day range $23.86–$24.86, opened at $24.30.
ADPT daily analysis — what happened
A plain-English, data-only note for every US trading day (today's note updates every 2 hours while the market is open). Newest first; older days stay archived below.
Oct 19, 2026 — ADPT ends flat (-0.3%) to $23.95, a 1-month low, 3 down days in a row
- Closed at $23.95, -0.29% vs the prior close of $24.02. Day range $23.86–$24.86, opened at $24.30.
- Volume was 1.19M shares, 0.5x its 50-day average of 2.18M — lighter than usual.
- Price is -8.4% vs its 50-day average ($26.15) and +24.9% vs its 200-day average ($19.17).
- 52-week range $12.00–$30.74; today's close sits at 64% of that range, 22.1% below the 52-week high.
- That makes 3 straight losses.
Oct 16, 2026 — ADPT slides 6.1% to $24.02, a 1-month low
- Closed at $24.02, -6.10% vs the prior close of $25.58. Day range $23.95–$25.51, opened at $25.41.
- Volume was 1.94M shares, 0.9x its 50-day average of 2.19M.
- Price is -8.2% vs its 50-day average ($26.17) and +25.5% vs its 200-day average ($19.14).
- 52-week range $12.00–$30.74; today's close sits at 64% of that range, 21.9% below the 52-week high.
Oct 15, 2026 — ADPT ends flat (-0.2%) to $25.58
- Closed at $25.58, -0.16% vs the prior close of $25.62. Day range $24.88–$25.91, opened at $25.47.
- Volume was 1.73M shares, 0.8x its 50-day average of 2.20M.
- Price is -2.2% vs its 50-day average ($26.17) and +33.9% vs its 200-day average ($19.10).
- 52-week range $12.00–$30.74; today's close sits at 72% of that range, 16.8% below the 52-week high.
Oct 14, 2026 — ADPT rises 1.3% to $25.62
- Closed at $25.62, +1.34% vs the prior close of $25.28. Day range $24.33–$26.33, opened at $24.59.
- Volume was 1.88M shares, 0.8x its 50-day average of 2.23M.
- Price is -2.0% vs its 50-day average ($26.15) and +34.5% vs its 200-day average ($19.05).
- 52-week range $12.00–$30.74; today's close sits at 73% of that range, 16.7% below the 52-week high.
Oct 13, 2026 — ADPT dips 1.1% to $25.28
- Closed at $25.28, -1.13% vs the prior close of $25.57. Day range $24.66–$25.86, opened at $25.38.
- Volume was 1.95M shares, 0.9x its 50-day average of 2.24M.
- Price is -3.2% vs its 50-day average ($26.12) and +33.0% vs its 200-day average ($19.01).
- 52-week range $12.00–$30.74; today's close sits at 71% of that range, 17.8% below the 52-week high.
Oct 12, 2026 — ADPT slides 3.5% to $25.57
- Closed at $25.57, -3.47% vs the prior close of $26.49. Day range $24.76–$26.49, opened at $26.31.
- Volume was 3.12M shares, 1.4x its 50-day average of 2.24M.
- Price is -2.0% vs its 50-day average ($26.08) and +34.8% vs its 200-day average ($18.97).
- 52-week range $12.00–$30.74; today's close sits at 72% of that range, 16.8% below the 52-week high.
Oct 9, 2026 — ADPT rises 1.5% to $26.49
- Closed at $26.49, +1.53% vs the prior close of $26.09. Day range $25.97–$26.85, opened at $26.11.
- Volume was 1.53M shares, 0.7x its 50-day average of 2.32M.
- Price is +1.8% vs its 50-day average ($26.02) and +40.0% vs its 200-day average ($18.92).
- 52-week range $12.00–$30.74; today's close sits at 77% of that range, 13.8% below the 52-week high.
Oct 8, 2026 — ADPT dips 0.7% to $26.09, 3 down days in a row
- Closed at $26.09, -0.72% vs the prior close of $26.28. Day range $25.12–$26.14, opened at $26.00.
- Volume was 2.65M shares, 1.1x its 50-day average of 2.33M.
- Price is +0.4% vs its 50-day average ($25.97) and +38.2% vs its 200-day average ($18.88).
- 52-week range $12.00–$30.74; today's close sits at 75% of that range, 15.1% below the 52-week high.
- That makes 3 straight losses.
Oct 7, 2026 — ADPT dips 2.3% to $26.28
- Closed at $26.28, -2.30% vs the prior close of $26.90. Day range $25.86–$26.93, opened at $26.39.
- Volume was 2.12M shares, 0.9x its 50-day average of 2.32M.
- Price is +1.5% vs its 50-day average ($25.90) and +39.6% vs its 200-day average ($18.83).
- 52-week range $12.00–$30.74; today's close sits at 76% of that range, 14.5% below the 52-week high.
Oct 6, 2026 — ADPT slides 9.9% to $26.90
- Closed at $26.90, -9.85% vs the prior close of $29.84. Day range $26.85–$30.74, opened at $30.22.
- Volume was 2.53M shares, 1.1x its 50-day average of 2.32M.
- Price is +4.1% vs its 50-day average ($25.83) and +43.2% vs its 200-day average ($18.78).
- 52-week range $12.00–$30.74; today's close sits at 80% of that range, 12.5% below the 52-week high.
Oct 5, 2026 — ADPT jumps 5.3% to $29.84, a 52-week high
- Closed at $29.84, +5.26% vs the prior close of $28.35. Day range $28.16–$29.86, opened at $28.57.
- Volume was 1.42M shares, 0.6x its 50-day average of 2.34M.
- Price is +15.9% vs its 50-day average ($25.74) and +59.3% vs its 200-day average ($18.73).
- 52-week range $12.00–$29.96; today's close sits at 99% of that range, 0.4% below the 52-week high.
Oct 2, 2026 — ADPT jumps 3.6% to $28.35
- Closed at $28.35, +3.58% vs the prior close of $27.37. Day range $27.31–$28.41, opened at $27.59.
- Volume was 1.58M shares, 0.7x its 50-day average of 2.37M.
- Price is +10.8% vs its 50-day average ($25.59) and +51.9% vs its 200-day average ($18.66).
- 52-week range $12.00–$29.96; today's close sits at 91% of that range, 5.4% below the 52-week high.
ADPT bull case vs bear case (from the data)
- Price is +24.9% vs its 200-day average — above the long-term trend line.
- Annual revenue grew 54.8% in the latest fiscal year (SEC XBRL).
- Price is -8.4% vs its 50-day average — short-term trend is down.
- Latest fiscal-year net income: loss of $59.50M.
- Insider selling outweighs buying: 25 sales vs 0 open-market buys among the 25 most recent reported insider trades (Form 4, last 12 months).
ADPT latest news & SEC filings
Every SEC filing by or about ADPT in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Oct 16, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Rubinstein Julie converted options/RSUs into 11,881 shares at $12.14 (≈$144.24K) on Oct 14, 2026; now holds 389,683
- Rubinstein Julie sold 6,781 shares at $25.57 (≈$173.39K) on Oct 14, 2026; now holds 382,902
- Rubinstein Julie sold 5,100 shares at $25.82 (≈$131.68K) on Oct 14, 2026; now holds 377,802
- Rubinstein Julie converted options/RSUs into 11,881 shares at $12.14 (≈$144.24K) on Oct 15, 2026; now holds 389,683
- Rubinstein Julie sold 11,881 shares at $25.61 (≈$304.27K) on Oct 15, 2026; now holds 377,802
- Rubinstein Julie converted options/RSUs into 11,881 shares at $12.14 (≈$144.24K) on Oct 16, 2026; now holds 389,683
- …plus 2 more transaction lines in the filing.
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.
Oct 13, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Rubinstein Julie converted options/RSUs into 11,881 shares at $12.14 (≈$144.24K) on Oct 9, 2026; now holds 389,683
- Rubinstein Julie sold 11,881 shares at $26.41 (≈$313.78K) on Oct 9, 2026; now holds 377,802
- Rubinstein Julie converted options/RSUs into 11,881 shares at $12.14 (≈$144.24K) on Oct 12, 2026; now holds 389,683
- Rubinstein Julie sold 9,181 shares at $25.35 (≈$232.74K) on Oct 12, 2026; now holds 380,502
- Rubinstein Julie sold 2,700 shares at $26.07 (≈$70.39K) on Oct 12, 2026; now holds 377,802
- Rubinstein Julie converted options/RSUs into 11,881 shares at $12.14 (≈$144.24K) on Oct 13, 2026; now holds 389,683
- …plus 1 more transaction lines in the filing.
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.
Oct 8, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Rubinstein Julie converted options/RSUs into 11,881 shares at $12.14 (≈$144.24K) on Oct 6, 2026; now holds 389,683
- Rubinstein Julie sold 9,381 shares at $27.36 (≈$256.66K) on Oct 6, 2026; now holds 380,302
- Rubinstein Julie sold 1,100 shares at $28.21 (≈$31.03K) on Oct 6, 2026; now holds 379,202
- Rubinstein Julie sold 901 shares at $29.71 (≈$26.77K) on Oct 6, 2026; now holds 378,301
- Rubinstein Julie sold 499 shares at $30.53 (≈$15.23K) on Oct 6, 2026; now holds 377,802
- Rubinstein Julie converted options/RSUs into 11,881 shares at $12.14 (≈$144.24K) on Oct 7, 2026; now holds 389,683
- …plus 3 more transaction lines in the filing.
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.
Oct 8, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Bobulsky Susan sold 6,444 shares at $30.00 (≈$193.32K) on Oct 6, 2026; now holds 389,350
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.
Oct 6, 2026 · Form 144 — Planned insider sale
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.
Oct 5, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
- Rubinstein Julie converted options/RSUs into 11,881 shares at $12.14 (≈$144.24K) on Oct 1, 2026; now holds 389,683
- Rubinstein Julie sold 6,081 shares at $27.57 (≈$167.65K) on Oct 1, 2026; now holds 383,602
- Rubinstein Julie sold 5,800 shares at $28.56 (≈$165.65K) on Oct 1, 2026; now holds 377,802
- Rubinstein Julie converted options/RSUs into 11,881 shares at $12.14 (≈$144.24K) on Oct 2, 2026; now holds 389,683
- Rubinstein Julie sold 11,881 shares at $28.13 (≈$334.21K) on Oct 2, 2026; now holds 377,802
- Rubinstein Julie converted options/RSUs into 11,881 shares at $12.14 (≈$144.24K) on Oct 5, 2026; now holds 389,683
- …plus 2 more transaction lines in the filing.
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.
Aug 4, 2026 · Form 10-Q — Quarterly report
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Jun 30, 2026:
- Revenue: $71.55M (prior year $58.88M) (+21.5% vs Jun 30, 2025)
- Net income: -$39.79M (prior year -$25.61M) (loss widened vs Jun 30, 2025)
- Diluted EPS: -$0.25 (prior year -$0.17) (loss widened vs Jun 30, 2025)
Jul 29, 2026 · Form 8-K — Major event / 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).
- Item 5.02 — Change in directors or officers (appointment, departure or pay).
This is a results-day filing: the earnings press release is attached as an exhibit.
Jun 22, 2026 · Form 8-K — Major event / 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 1.02 — Ended a material agreement.
- Item 2.03 — Took on a new material debt or financial obligation.
- Item 3.02 — Sold unregistered shares.
- Item 8.01 — Reported other events the company considers important.
Things to know before you trade ADPT
- Last results release: Jul 29, 2026 (8-K Item 2.02). Previous ones: May 5, 2026, Feb 5, 2026, Jan 12, 2026. Based on that rhythm, the next report is likely around Oct 28, 2026 — an estimate, not a confirmed date.
- How much it moves: over the last 20 sessions the average daily move was 2.67% (largest 9.9%).
- Liquidity: about 2.34M shares (≈$55.93M) trade per day on average.
- 52-week position: $23.95 vs a range of $12.00–$30.74 (64% 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: Francis Lo sold 107,537 shares on Sep 16, 2026.
- Latest filings: 10-Q Aug 4, 2026; 8-K Jul 29, 2026; 8-K Jun 22, 2026.
- Share count: 159.60M shares outstanding (Jul 31, 2026), +4.8% vs a year earlier.
- Listing: Nasdaq · industry: Biological Products, (No Diagnostic Substances).
ADPT market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 19, 2026 | 24.30 | 24.88 | 23.85 | 23.95 | 1.19M |
| Oct 16, 2026 | 25.41 | 25.65 | 23.95 | 24.02 | 1.95M |
| Oct 15, 2026 | 25.47 | 25.91 | 24.88 | 25.58 | 1.73M |
| Oct 14, 2026 | 24.59 | 26.33 | 24.33 | 25.62 | 1.88M |
| Oct 13, 2026 | 25.38 | 25.86 | 24.66 | 25.28 | 1.95M |
| Oct 12, 2026 | 26.31 | 26.49 | 24.76 | 25.57 | 3.12M |
| Oct 9, 2026 | 26.11 | 26.85 | 25.97 | 26.49 | 1.53M |
| Oct 8, 2026 | 26.00 | 26.14 | 25.12 | 26.09 | 2.65M |
| Oct 7, 2026 | 26.39 | 26.93 | 25.86 | 26.28 | 2.12M |
| Oct 6, 2026 | 30.22 | 30.74 | 26.85 | 26.90 | 2.53M |
| Oct 5, 2026 | 28.57 | 29.86 | 28.16 | 29.84 | 1.42M |
| Oct 2, 2026 | 27.59 | 28.41 | 27.31 | 28.35 | 1.58M |
| Oct 1, 2026 | 28.89 | 29.00 | 27.15 | 27.37 | 6.02M |
| Sep 30, 2026 | 28.80 | 29.52 | 28.75 | 28.90 | 1.51M |
| Sep 29, 2026 | 29.28 | 29.80 | 28.63 | 28.77 | 2.51M |
| Sep 28, 2026 | 29.00 | 29.52 | 28.07 | 28.51 | 2.64M |
| Sep 25, 2026 | 29.96 | 29.96 | 28.88 | 29.43 | 1.69M |
| Sep 24, 2026 | 28.00 | 29.58 | 27.50 | 29.57 | 3.61M |
| Sep 23, 2026 | 27.74 | 28.35 | 27.60 | 27.89 | 1.08M |
| Sep 22, 2026 | 27.30 | 28.36 | 26.73 | 28.06 | 4.00M |
About Adaptive Biotechnologies
Adaptive Biotechnologies (ADPT) is listed on the Nasdaq and classified by the SEC under “Biological Products, (No Diagnostic Substances)”. Its business address is in SEATTLE, WA. State of incorporation: WA. Fiscal year ends December 31. SEC CIK 1478320.
ADPT 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 |
|---|---|---|
| Michelle Renee Griffin | Director | Jun 29, 2026 |
| Robert Hershberg | Director | Aug 20, 2026 |
| Peter M Neupert | Director | Aug 19, 2026 |
| Katey Einterz Owen | Director | Sep 2, 2026 |
| Chad M Robins | CEO and Chairman | Aug 19, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| Sharon Benzeno | Chief Commercial Ofc Imm Med | Jun 30, 2026 |
| Susan Bobulsky | Chief Commercial Officer, MRD | Sep 17, 2026 |
| Francis Lo | Chief People Officer | Sep 18, 2026 |
| Kyle Piskel | Chief Financial Officer | May 20, 2026 |
| Chad M Robins | CEO and Chairman | Aug 19, 2026 |
| Harlan S Robins | Chief Scientific Officer | Jul 23, 2026 |
| Julie Rubinstein | President and COO | Apr 29, 2026 |
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Sep 16, 2026 | Francis Lo | Sale | 107,537 | $28.02 |
| Sep 16, 2026 | Francis Lo | Sale | 7,869 | $28.57 |
| Sep 16, 2026 | Francis Lo | Sale | 107,537 | $28.02 |
| Sep 16, 2026 | Francis Lo | Sale | 7,869 | $28.57 |
| Sep 16, 2026 | Francis Lo | Sale | 107,537 | $28.02 |
| Sep 16, 2026 | Francis Lo | Sale | 7,869 | $28.57 |
| Sep 16, 2026 | Francis Lo | Sale | 107,537 | $28.02 |
| Sep 16, 2026 | Francis Lo | Sale | 7,869 | $28.57 |
| Sep 15, 2026 | Susan Bobulsky | Sale | 1,195 | $27.00 |
| Sep 15, 2026 | Susan Bobulsky | Sale | 1,195 | $27.00 |
| Sep 15, 2026 | Susan Bobulsky | Sale | 1,195 | $27.00 |
| Sep 15, 2026 | Susan Bobulsky | Sale | 1,195 | $27.00 |
| Aug 26, 2026 | Katey Einterz Owen | Sale | 9,615 | $26.00 |
| Aug 26, 2026 | Katey Einterz Owen | Sale | 9,615 | $26.00 |
| Aug 26, 2026 | Katey Einterz Owen | Sale | 9,615 | $26.00 |
ADPT financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| Dec 31, 2025 | $276.98M | $-59.50M | -0.39 | $-45.99M |
| Dec 31, 2024 | $178.96M | $-159.49M | -1.08 | $-95.21M |
| Dec 31, 2023 | $170.28M | $-225.25M | -1.56 | $-156.32M |
| Dec 31, 2022 | $185.31M | $-200.19M | -1.40 | $-183.94M |
| Dec 31, 2021 | $154.34M | $-207.28M | -1.48 | $-192.73M |
Latest balance sheet: total assets $640.68M, total liabilities $490.02M, cash $169.87M (as of Jun 30, 2026).
ADPT earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| Jul 29, 2026 | 8-K Item 2.02 (results) | $22.56 |
| May 5, 2026 | 8-K Item 2.02 (results) | $13.78 |
| Feb 5, 2026 | 8-K Item 2.02 (results) | $16.47 |
| Jan 12, 2026 | 8-K Item 2.02 (results) | $18.26 |
| Nov 5, 2025 | 8-K Item 2.02 (results) | $17.59 |
| Aug 5, 2025 | 8-K Item 2.02 (results) | $11.05 |
| May 1, 2025 | 8-K Item 2.02 (results) | $7.36 |
| Feb 11, 2025 | 8-K Item 2.02 (results) | $7.80 |
| Nov 7, 2024 | 8-K Item 2.02 (results) | $5.63 |
| Aug 1, 2024 | 8-K Item 2.02 (results) | — |
| May 7, 2024 | 8-K Item 2.02 (results) | — |
| Apr 5, 2024 | 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 19, 2026, 4:00 PM ET. Filings: SEC EDGAR. Refreshed every 2 hours during US market hours.