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ADPT · Adaptive Biotechnologies Corp

Healthcare · −6.1% on Oct 16

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Updated Oct 17 · 6 feeds behind: Insider filings, 2 days, and 5 more · Every feed →

On this page

The market view

Price chart

The interactive ADPT chart (by TradingView) loads here.

Our take

3 rules fired on ADPT

In short: none of these rules has solid or some evidence yet, so they show no clear lean on ADPT.

How each did in past tests, against similar stocks over 3 months. Past results don't predict future ones.

The 0–100 score for ADPT, and which of these rules are open on it right now
Members see one number for how strongly these rules agree on ADPT, and the day each rule fired. Better-tested rules count more, and so do different kinds of filings that point the same way.
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Compare with this company’s history

Is disclosure activity unusual?

See how many different insiders or members of Congress reported purchases or sales of ADPT. Each bar covers 28 days, by disclosure date. Several trades by one person count once in each group and period.

Latest period: Sep 21, 2026–Oct 18, 2026 · UTC dates · today is excluded

Insider sales

Short history

Only 3 earlier periods are on file to compare with. We need at least 6 full periods before calling a count unusual.

Latest 28 days
3
Earlier median
4
Earlier range
3–5
Distinct filers per 28 daysScale: 0–5
Oct 20, 2025Oct 18, 2026
Earlier periodsLatest 28 daysEarlier median 4Limited or missing history

Who appears in the latest period?

Up to three filers; one example disclosure each.

Inspect this period’s filings

The history behind this view

First stored company disclosure: Jun 15, 2026. Newest disclosure across this feed: Oct 16, 2026.

Earlier periods in the comparison: 3. Outlined periods are missing data, so they are left out of the comparison. The chart scale changes with the category.

Exact counts, dates and filings for all four categories
Insider purchases · Short history

Only 3 earlier periods are on file to compare with. We need at least 6 full periods before calling a count unusual. Earlier median: 0; range: 0–0.

Insider purchases: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 2025—Unavailable
Nov 17, 2025–Dec 14, 2025—Unavailable
Dec 15, 2025–Jan 11, 2026—Unavailable
Jan 12, 2026–Feb 8, 2026—Unavailable
Feb 9, 2026–Mar 8, 2026—Unavailable
Mar 9, 2026–Apr 5, 2026—Unavailable
Apr 6, 2026–May 3, 2026—Unavailable
May 4, 2026–May 31, 2026—Unavailable
Jun 1, 2026–Jun 28, 20260Partial; excluded
Jun 29, 2026–Jul 26, 20260Within stored history
Jul 27, 2026–Aug 23, 20260Within stored history
Aug 24, 2026–Sep 20, 20260Within stored history
Sep 21, 2026–Oct 18, 2026Latest period0Within stored history
Insider sales · Short history

Only 3 earlier periods are on file to compare with. We need at least 6 full periods before calling a count unusual. Earlier median: 4; range: 3–5.

Insider sales: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 2025—Unavailable
Nov 17, 2025–Dec 14, 2025—Unavailable
Dec 15, 2025–Jan 11, 2026—Unavailable
Jan 12, 2026–Feb 8, 2026—Unavailable
Feb 9, 2026–Mar 8, 2026—Unavailable
Mar 9, 2026–Apr 5, 2026—Unavailable
Apr 6, 2026–May 3, 2026—Unavailable
May 4, 2026–May 31, 2026—Unavailable
Jun 1, 2026–Jun 28, 20262Partial; excluded
Jun 29, 2026–Jul 26, 20265Within stored history
Jul 27, 2026–Aug 23, 20264Within stored history
Aug 24, 2026–Sep 20, 20263Within stored history
Sep 21, 2026–Oct 18, 2026Latest period3Within stored history
Congress purchases · History unavailable

No completed-period disclosures for this company are available in this source. Missing history is not zero activity. Earlier median: —; range: unavailable.

Congress purchases: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 2025—Unavailable
Nov 17, 2025–Dec 14, 2025—Unavailable
Dec 15, 2025–Jan 11, 2026—Unavailable
Jan 12, 2026–Feb 8, 2026—Unavailable
Feb 9, 2026–Mar 8, 2026—Unavailable
Mar 9, 2026–Apr 5, 2026—Unavailable
Apr 6, 2026–May 3, 2026—Unavailable
May 4, 2026–May 31, 2026—Unavailable
Jun 1, 2026–Jun 28, 2026—Unavailable
Jun 29, 2026–Jul 26, 2026—Unavailable
Jul 27, 2026–Aug 23, 2026—Unavailable
Aug 24, 2026–Sep 20, 2026—Unavailable
Sep 21, 2026–Oct 18, 2026Latest period—Unavailable
Congress sales · History unavailable

No completed-period disclosures for this company are available in this source. Missing history is not zero activity. Earlier median: —; range: unavailable.

Congress sales: distinct filers in stored disclosures
Period and filingsFilersHistory
Oct 20, 2025–Nov 16, 2025—Unavailable
Nov 17, 2025–Dec 14, 2025—Unavailable
Dec 15, 2025–Jan 11, 2026—Unavailable
Jan 12, 2026–Feb 8, 2026—Unavailable
Feb 9, 2026–Mar 8, 2026—Unavailable
Mar 9, 2026–Apr 5, 2026—Unavailable
Apr 6, 2026–May 3, 2026—Unavailable
May 4, 2026–May 31, 2026—Unavailable
Jun 1, 2026–Jun 28, 2026—Unavailable
Jun 29, 2026–Jul 26, 2026—Unavailable
Jul 27, 2026–Aug 23, 2026—Unavailable
Aug 24, 2026–Sep 20, 2026—Unavailable
Sep 21, 2026–Oct 18, 2026Latest period—Unavailable
How to read this comparison

The median is the middle count in up to 12 earlier, non-overlapping 28-day periods; the range runs from the smallest to the largest count. The latest period is excluded from both. A comparison needs at least 6 earlier periods, including 3 with activity. The feed’s latest disclosure must be within 7 days of the current period’s end. This freshness check does not verify complete collection.

Insiders include individuals and reporting entities; only purchase and sale codes enter this view. Congress counts reporting members, including their disclosed family transactions. The same filer can appear in purchases and sales, so these categories should not be added into a net count.

These are stored disclosures, not a complete measure of trading. Reporting delays and collection gaps can change the comparison. More activity does not identify a motive or predict a stock’s return.

Company timeline

What has been happening?

May 1, 2026–Oct 16, 2026. Select a month in a category to inspect its records.

Company filings

Insiders

Insiders · Oct 2026

  1. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 14, 2026

  2. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 14, 2026

  3. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 15, 2026

  4. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 16, 2026

  5. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 16, 2026

  6. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 13, 2026

  7. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 12, 2026

  8. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 12, 2026

  9. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 9, 2026

  10. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 8, 2026

  11. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 6, 2026

  12. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 7, 2026

  13. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 6, 2026

  14. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 6, 2026

  15. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 6, 2026

  16. Disclosed
    Susan Bobulsky · Sale

    Transaction dated Oct 6, 2026

  17. Filed
  18. Disclosed
    Francis Lo · Sale

    Transaction dated Oct 1, 2026

  19. Disclosed
    Francis Lo · Sale

    Transaction dated Oct 1, 2026

  20. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 2, 2026

  21. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 1, 2026

  22. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 5, 2026

  23. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 5, 2026

  24. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 1, 2026

  25. Filed
All 37 records in this snapshot
  1. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 14, 2026

  2. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 14, 2026

  3. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 15, 2026

  4. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 16, 2026

  5. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 16, 2026

  6. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 13, 2026

  7. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 12, 2026

  8. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 12, 2026

  9. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 9, 2026

  10. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 8, 2026

  11. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 6, 2026

  12. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 7, 2026

  13. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 6, 2026

  14. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 6, 2026

  15. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 6, 2026

  16. Disclosed
    Susan Bobulsky · Sale

    Transaction dated Oct 6, 2026

  17. Filed
  18. Disclosed
    Francis Lo · Sale

    Transaction dated Oct 1, 2026

  19. Disclosed
    Francis Lo · Sale

    Transaction dated Oct 1, 2026

  20. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 2, 2026

  21. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 1, 2026

  22. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 5, 2026

  23. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 5, 2026

  24. Disclosed
    Julie Rubinstein · Sale

    Transaction dated Oct 1, 2026

  25. Filed
  26. Disclosed
    Francis Lo · Sale

    Transaction dated Sep 16, 2026

  27. Disclosed
    Francis Lo · Sale

    Transaction dated Sep 16, 2026

  28. Filed
  29. Filed
  30. Filed
  31. Filed
  32. Filed
  33. Filed
  34. Record date
  35. Filed
  36. Record date
  37. Filed

Month counts include every record on file. The lists show the newest records on this page. A dash means none on file that month. Trades use disclosure dates; contract dates follow the source record. Nearby events do not establish the cause of a price move.

Who's buying and selling · last 90 days

Congress

No Congress trades on ADPT disclosed in the last 90 days.

See every Congress trade on ADPT →

Company insiders

0 buys · 16 sells (41 filed lots) · $38M sold

  1. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$173Kdisclosed Oct 16 · filed 2 days after the trade
  2. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$132Kdisclosed Oct 16 · filed 2 days after the trade
  3. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$304Kdisclosed Oct 16 · filed 1 day after the trade
  4. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$280Kdisclosed Oct 16 · filed the same day
  5. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$7.6Kdisclosed Oct 16 · filed the same day
  6. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$303Kdisclosed Oct 13 · filed the same day
  7. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$233Kdisclosed Oct 13 · filed 1 day after the trade
  8. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$70.4Kdisclosed Oct 13 · filed 1 day after the trade
  9. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$314Kdisclosed Oct 13 · filed 4 days after the trade
  10. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$305Kdisclosed Oct 8 · filed the same day
See every insider trade on ADPT →

Filings & events

Company filings (8-K) 42

Events the company must report to the SEC within days — results, deals, departures, restatements.

What it files 8-Ks about

  • Quarterly or yearly results · item 2.0212
  • Directors or officers joined, left or got new pay · item 5.026
  • Shareholder vote results · item 5.074
  • Other events · item 8.013
  • Shared information with investors · item 7.011
  • Ended a major agreement · item 1.021

Filing red flags 8

Warning signs in the company's own SEC filings — going-concern doubts, control weaknesses, staff comment letters, late filings, restatements, Wells notices, clinical holds, dividend cuts.

Planned insider sales (Form 144) 85

Notices insiders file before they sell certain shares, such as ones they got straight from the company.

16 in the last 90 days · 85 notices on file

The notices on file don't give the sale's size; each sale shows up under company insiders once it is reported.

5% owners (13D / 13G) 1

Investors who reported owning 5% or more — 13D for owners who may push for changes, 13G for owners who just hold.

Push for changes, or just hold?

  • 13G, just holds: 1 filing

Filed by ARK Investment Management LLC

Biggest named funds (13F)

The largest ADPT holdings among the well-known funds whose quarterly 13F filings we read — opens here.

Every disclosed trade on ADPT

  1. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$173Kdisclosed Oct 16 · filed 2 days after the trade
  2. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$132Kdisclosed Oct 16 · filed 2 days after the trade
  3. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$304Kdisclosed Oct 16 · filed 1 day after the trade
  4. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$280Kdisclosed Oct 16 · filed the same day
  5. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$7.6Kdisclosed Oct 16 · filed the same day
  6. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$303Kdisclosed Oct 13 · filed the same day
  7. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$233Kdisclosed Oct 13 · filed 1 day after the trade
  8. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$70.4Kdisclosed Oct 13 · filed 1 day after the trade
  9. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$314Kdisclosed Oct 13 · filed 4 days after the trade
  10. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$305Kdisclosed Oct 8 · filed the same day
  11. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$26.8Kdisclosed Oct 8 · filed 2 days after the trade
  12. ▼ SELLSusan Bobulsky Chief Commercial Officer, MRDADPT Adaptive Biotechnologies Corp$193Kdisclosed Oct 8 · filed 2 days after the trade
  13. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$314Kdisclosed Oct 8 · filed 1 day after the trade
  14. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$257Kdisclosed Oct 8 · filed 2 days after the trade
  15. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$31Kdisclosed Oct 8 · filed 2 days after the trade
  16. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$15.2Kdisclosed Oct 8 · filed 2 days after the trade
  17. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$334Kdisclosed Oct 5 · filed 3 days after the trade
  18. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$166Kdisclosed Oct 5 · filed 4 days after the trade
  19. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$193Kdisclosed Oct 5 · filed the same day
  20. ▼ SELLFrancis Lo Chief People OfficerADPT Adaptive Biotechnologies Corp$223Kdisclosed Oct 5 · filed 4 days after the trade
  21. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$154Kdisclosed Oct 5 · filed the same day
  22. ▼ SELLJulie Rubinstein President and COOADPT Adaptive Biotechnologies Corp$168Kdisclosed Oct 5 · filed 4 days after the trade
  23. ▼ SELLFrancis Lo Chief People OfficerADPT Adaptive Biotechnologies Corp$535Kdisclosed Oct 5 · filed 4 days after the trade
  24. ▼ SELLFrancis Lo Chief People OfficerADPT Adaptive Biotechnologies Corp$225Kdisclosed Sep 18 · filed 2 days after the trade
  25. ▼ SELLFrancis Lo Chief People OfficerADPT Adaptive Biotechnologies Corp$3Mdisclosed Sep 18 · filed 2 days after the trade
See all 55 trades on ADPT →
People & votes

Which members of Congress traded ADPT, sponsored bills that touch it and voted on them — opens here.