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Adaptive Biotechnologies Corp. short interest

12.0M shares of Adaptive Biotechnologies were sold short at the 15 October 2026 settlement, near the middle of its range over the last year (7.6M to 13.5M). Short sellers would need 5.0 days of normal trading to buy them back.

Shares sold short12.0Mat 15 Oct 2026
Change on the settlement before+1.3%+33% over a year
Days to cover5.03at 2.4M shares a day
Of shares in issue7.54%shares short over shares outstanding
New to this? How to read this page
  1. Short interest is the number of shares investors have borrowed and sold, betting the price will fall, and not yet bought back.
  2. Days to cover is shares short over an average day's trading: how many days it would take short sellers to buy them all back. Above 5 or so is high.
  3. Rising short interest says more investors are betting against the stock. A crowded short can also rise fast if shorts rush to buy back.
  4. Brokers report it twice a month to FINRA, about ten days after each settlement date.
  5. What is short interest?

Short interest, days to cover and the price

Short interest is near the middle of its range over the last year (7.6M to 13.5M), and the share price moved +62% over the last year.

Shares sold shortDays to coverShare price

Three charts on one timeline. Top: shares sold short at each settlement. Middle: days to cover, taller meaning shorts would need longer to buy back. Bottom: the share price, so you can see whether shorts added as the price fell or rose.

How it compares

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    Every settlement since 15 Jul 2019 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 202612.0M+1.3%2.4M5.03
    30 September 202611.8M-12.2%2.7M4.43
    15 September 202613.5M+15.2%1.7M7.89
    31 August 202611.7M-12.1%1.8M6.37
    14 August 202613.3M+6.7%2.3M5.72
    31 July 202612.5M+9.6%2.8M4.39
    15 July 202611.4M+0.4%2.6M4.31
    30 June 202611.4M+48.5%5.1M2.23
    15 June 20267.6M-7.2%2.7M2.82
    29 May 20268.2M-7.4%1.6M5.13
    15 May 20268.9M+5.4%2.0M4.55
    30 April 20268.4M-1.3%1.2M6.94
    15 April 20268.6M-0.1%1.9M4.41
    31 March 20268.6M-7.4%2.1M4.06
    13 March 20269.2M+4.2%2.5M3.65
    27 February 20268.9M-3.4%1.4M6.51
    13 February 20269.2M+1.8%2.2M4.27
    30 January 20269.0M+0.1%1.6M5.56
    15 January 20269.0M+3.0%2.2M4.01
    31 December 20258.8M-10.1%2.0M4.43
    15 December 20259.7M-6.4%3.3M2.94
    28 November 202510.4M+0.3%2.8M3.75
    14 November 202510.4M+15.1%2.1M4.98
    31 October 20259.0M-0.2%1.5M5.84
    15 October 20259.0M-5.9%1.8M4.96
    30 September 20259.6M+2.6%2.1M4.65
    15 September 20259.3M+10.8%1.9M4.98
    29 August 20258.4M-5.7%1.7M4.85
    15 August 20258.9M-9.9%2.6M3.39
    31 July 20259.9M+2.5%1.5M6.62
    15 July 20259.7M-4.3%1.8M5.43
    30 June 202510.1M+13.4%3.2M3.21
    13 June 20258.9M-7.4%1.2M7.49
    30 May 20259.6M+5.9%1.2M7.93
    15 May 20259.1M-0.5%3.6M2.52
    30 April 20259.1M-7.6%1.7M5.47
    15 April 20259.9M-2.2%2.7M3.68
    31 March 202510.1M+6.7%2.1M4.83
    14 March 20259.5M+9.5%2.3M4.19
    28 February 20258.7M-1.3%1.6M5.55
    14 February 20258.8M+2.9%1.6M5.41
    31 January 20258.5M-1.5%1.4M6.28
    15 January 20258.7M-5.8%1.7M5.16
    31 December 20249.2M+1.8%1.0M9.10
    13 December 20249.0M-5.7%1.1M7.87
    29 November 20249.6M+16.8%1.8M5.40
    15 November 20248.2M-8.5%1.2M6.65
    31 October 20249.0M-5.4%829K10.82
    15 October 20249.5M-4.4%962K9.85
    30 September 20249.9M+2.9%1.3M7.59
    13 September 20249.6M-0.8%805K11.97
    30 August 20249.7M+0.5%951K10.21
    15 August 20249.7M-11.7%1.6M6.04
    31 July 202410.9M-8.1%1.3M8.39
    15 July 202411.9M-1.8%1.3M9.51
    28 June 202412.1M-7.0%1.9M6.44
    14 June 202413.0M-2.5%1.3M10.21
    31 May 202413.4M+1.9%1.4M9.24
    15 May 202413.1M+9.1%1.5M8.66
    30 April 202412.0M+20.4%1.9M6.18
    15 April 202410.0M+10.0%2.1M4.69
    28 March 20249.1M+7.6%1.5M5.92
    15 March 20248.5M-3.5%1.6M5.22
    29 February 20248.8M-4.6%1.2M7.30
    15 February 20249.2M+4.3%1.6M5.90
    31 January 20248.8M+0.6%1.4M6.47
    12 January 20248.8M-7.4%1.3M6.76
    29 December 20239.5M-1.3%1.6M5.96
    15 December 20239.6M-8.6%1.4M6.86
    30 November 202310.5M-6.6%1.1M9.62
    15 November 202311.2M+4.6%2.3M4.87
    31 October 202310.7M+8.5%1.4M7.83
    13 October 20239.9M-6.9%1.3M7.45
    29 September 202310.6M+7.5%1.9M5.60
    15 September 20239.9M-5.0%1.1M9.36
    31 August 202310.4M+3.5%1.3M8.18
    15 August 202310.1M+5.4%1.4M7.17
    31 July 20239.5M+6.3%802K11.90
    14 July 20239.0M+12.2%1.1M7.97
    30 June 20238.0M-1.0%1.2M6.45
    15 June 20238.1M+10.5%974K8.30
    31 May 20237.3M+10.4%1.1M6.87
    15 May 20236.6M+8.8%979K6.77
    28 April 20236.1M+12.3%721K8.45
    14 April 20235.4M-11.4%943K5.75
    31 March 20236.1M+14.9%755K8.11
    15 March 20235.3M+9.3%855K6.23
    28 February 20234.9M+9.5%876K5.56
    15 February 20234.4M-6.4%1.2M3.60
    31 January 20234.8M-12.3%924K5.15
    13 January 20235.4M-8.3%1.1M5.11
    30 December 20225.9M+25.1%1.2M5.04
    15 December 20224.7M-11.2%793K5.96
    30 November 20225.3M+3.4%842K6.32
    15 November 20225.1M-13.8%1.3M3.92
    31 October 20226.0M-2.3%1.0M5.77
    14 October 20226.1M-5.2%841K7.28
    30 September 20226.5M+3.3%1.0M6.21
    15 September 20226.2M-9.3%1.1M5.47
    31 August 20226.9M+5.9%1.0M6.60
    15 August 20226.5M+1.4%1.6M4.06
    29 July 20226.4M-7.7%1.1M5.61
    15 July 20227.0M-7.6%1.2M5.92
    30 June 20227.5M+2.7%2.8M2.66
    15 June 20227.3M+15.5%2.0M3.69
    31 May 20226.3M-8.2%1.4M4.64
    13 May 20226.9M+32.4%2.0M3.49
    29 April 20225.2M-1.9%1.5M3.40
    14 April 20225.3M+11.4%1.3M4.17
    31 March 20224.8M-12.0%1.0M4.65
    15 March 20225.4M-0.3%1.3M4.26
    28 February 20225.4M-5.3%1.6M3.45
    15 February 20225.7M+10.1%1.2M4.65
    31 January 20225.2M+20.1%1.4M3.60
    14 January 20224.3M+14.4%965K4.50
    31 December 20213.8M-6.7%727K5.22
    15 December 20214.1M+8.9%901K4.52
    30 November 20213.7M-0.9%1.0M3.63
    15 November 20213.8M-10.8%599K6.30
    29 October 20214.2M-1.0%421K10.05
    15 October 20214.3M-3.1%480K8.89
    30 September 20214.4M+4.7%690K6.38
    15 September 20214.2M+5.1%507K8.30
    31 August 20214.0M-8.4%485K8.25
    13 August 20214.4M-8.0%663K6.60
    30 July 20214.8M+4.1%505K9.41
    15 July 20214.6M-2.1%506K9.02
    30 June 20214.7M+11.6%840K5.56
    15 June 20214.2M-4.0%654K6.39
    28 May 20214.4M-9.9%698K6.24
    14 May 20214.8M+1.3%1.4M3.52
    30 April 20214.8M+9.2%545K8.75
    15 April 20214.4M+1.6%983K4.45
    31 March 20214.3M+13.1%1.1M3.84
    15 March 20213.8M+10.0%1.6M2.37
    26 February 20213.5M+14.4%694K4.99
    12 February 20213.0M-4.6%494K6.12
    29 January 20213.2M-26.2%748K4.24
    15 January 20214.3M-6.7%687K6.26
    31 December 20204.6M+7.3%978K4.71
    15 December 20204.3M+11.1%852K5.04
    30 November 20203.9M-46.1%628K6.16
    13 November 20207.2M+49.5%684K10.49
    30 October 20204.8M+18.2%608K7.89
    15 October 20204.1M-22.3%736K5.51
    30 September 20205.2M+26.6%1.2M4.29
    15 September 20204.1M+35.5%825K5.00
    31 August 20203.0M+28.1%615K4.95
    14 August 20202.4M+7.7%782K3.04
    31 July 20202.2M-10.0%1.5M1.48
    15 July 20202.5M-14.3%765K3.20
    30 June 20202.9M+2.8%994K2.88
    15 June 20202.8M+0.8%1.1M2.48
    29 May 20202.8M+2.5%819K3.37
    15 May 20202.7M-16.3%991K2.72
    30 April 20203.2M+7.2%821K3.92
    15 April 20203.0M-2.7%844K3.55
    31 March 20203.1M-6.9%1.3M2.43
    13 March 20203.3M-10.3%997K3.32
    28 February 20203.7M-1.5%1.2M2.95
    14 February 20203.7M+3.9%733K5.11
    31 January 20203.6M-11.3%2.4M1.52
    15 January 20204.1M-18.2%722K5.62
    31 December 20195.0M+45.5%1.0M4.95
    13 December 20193.4M+7.7%571K5.98
    29 November 20193.2M+15.2%469K6.76
    15 November 20192.8M-8.8%542K5.08
    31 October 20193.0M-0.9%467K6.46
    15 October 20193.0M+23.0%581K5.24
    30 September 20192.5M+18.2%730K3.39
    13 September 20192.1M+9.0%517K4.05
    30 August 20191.9M+18.0%293K6.56
    15 August 20191.6M+12.7%484K3.37
    31 July 20191.4M+8.1%300K4.82
    15 July 20191.3M1.1M1.20
    Shares in millions (M) or thousands (K); hold the pointer on a figure for the exact count. FINRA publishes consolidated short interest twice a month, about ten days after each settlement.