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CytomX Therapeutics, Inc. short interest

42.8M shares of CytomX Therapeutics were sold short at the 15 October 2026 settlement, the most at any settlement since 29 Dec 2017, when our record starts. Short sellers would need 13.8 days of normal trading to buy them back.

Shares sold short42.8Mat 15 Oct 2026
Change on the settlement before+4.8%+51% over a year
Days to cover13.78at 3.1M shares a day
Of shares in issue19.64%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 the most at any settlement since 29 Dec 2017, when our record starts, and the share price moved -33% 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

every company on the site

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every settlement since 29 Dec 2017 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 202642.8M+4.8%3.1M13.78
    30 September 202640.8M+5.6%4.7M8.67
    15 September 202638.6M+15.3%4.2M9.29
    31 August 202633.5M-3.2%2.8M11.81
    14 August 202634.6M-1.4%2.2M15.93
    31 July 202635.1M-12.9%3.0M11.78
    15 July 202640.3M+13.4%3.9M10.38
    30 June 202635.6M+16.2%8.2M4.32
    15 June 202630.6M+6.6%3.5M8.65
    29 May 202628.7M-7.8%3.1M9.31
    15 May 202631.1M+4.7%3.0M10.32
    30 April 202629.7M+8.1%3.5M8.44
    15 April 202627.5M+24.9%5.1M5.41
    31 March 202622.0M+7.9%19.4M1.14
    13 March 202620.4M+8.2%2.9M7.10
    27 February 202618.9M+11.2%2.3M8.03
    13 February 202617.0M+14.5%3.6M4.66
    30 January 202614.8M-8.1%4.4M3.33
    15 January 202616.1M-32.0%2.2M7.49
    31 December 202523.7M+41.3%3.6M6.56
    15 December 202516.8M-2.4%1.8M9.20
    28 November 202517.2M-41.4%2.3M7.62
    14 November 202529.3M+2.1%5.2M5.59
    31 October 202528.7M+1.1%2.4M12.11
    15 October 202528.4M-9.5%3.3M8.58
    30 September 202531.4M+8.3%5.6M5.57
    15 September 202529.0M+7.4%2.6M11.31
    29 August 202527.0M+7.3%3.0M9.09
    15 August 202525.1M+4.9%4.5M5.61
    31 July 202524.0M+0.4%1.3M18.49
    15 July 202523.9M+6.6%1.6M14.60
    30 June 202522.4M+7.7%2.9M7.63
    13 June 202520.8M+9.6%2.5M8.40
    30 May 202519.0M+7.0%4.4M4.36
    15 May 202517.7M+82.0%17.0M1.04
    30 April 20259.7M+1.8%1.4M6.96
    15 April 20259.6M+2.3%1.3M7.37
    31 March 20259.4M+3.9%1.0M8.99
    14 March 20259.0M+91.7%6.5M1.39
    28 February 20254.7M+6.7%622K7.55
    14 February 20254.4M-3.4%729K6.03
    31 January 20254.6M-1.7%740K6.15
    15 January 20254.6M-3.5%1.4M3.42
    31 December 20244.8M-13.4%1.1M4.43
    13 December 20245.5M+26.3%2.5M2.23
    29 November 20244.4M-1.1%779K5.63
    15 November 20244.4M-21.7%1.3M3.36
    31 October 20245.7M-6.6%754K7.52
    15 October 20246.1M-2.9%422K14.36
    30 September 20246.2M-10.5%991K6.30
    13 September 20247.0M-2.3%618K11.30
    30 August 20247.1M-9.2%472K15.13
    15 August 20247.9M+1.7%713K11.04
    31 July 20247.7M+0.1%551K14.06
    15 July 20247.7M-3.9%1.1M6.96
    28 June 20248.1M+3.8%2.1M3.86
    14 June 20247.8M-1.8%2.6M3.03
    31 May 20247.9M-9.7%1.9M4.13
    15 May 20248.7M+143.3%31.5M1.00
    30 April 20243.6M+0.1%345K10.41
    15 April 20243.6M+8.1%628K5.72
    28 March 20243.3M-5.9%872K3.81
    15 March 20243.5M+115.6%1.5M2.33
    29 February 20241.6M+25.5%2.2M1.00
    15 February 20241.3M+4.2%202K6.47
    31 January 20241.3M-5.1%287K4.37
    12 January 20241.3M-1.1%581K2.27
    29 December 20231.3M+35.8%370K3.60
    15 December 2023982K-26.6%225K4.37
    30 November 20231.3M+0.4%161K8.31
    15 November 20231.3M+5.9%197K6.77
    31 October 20231.3M-18.3%238K5.28
    13 October 20231.5M-10.0%136K11.37
    29 September 20231.7M-22.8%130K13.15
    15 September 20232.2M+2.2%151K14.63
    31 August 20232.2M+5.8%164K13.25
    15 August 20232.0M-21.6%282K7.26
    31 July 20232.6M-2.9%181K14.45
    14 July 20232.7M+13.3%314K8.58
    30 June 20232.4M-0.3%639K3.72
    15 June 20232.4M+4.6%225K10.58
    31 May 20232.3M+7.2%425K5.36
    15 May 20232.1M-13.4%520K4.09
    28 April 20232.5M+9.0%384K6.41
    14 April 20232.3M+40.4%565K3.99
    31 March 20231.6M-14.7%1.3M1.27
    15 March 20231.9M+47.8%1.2M1.63
    28 February 20231.3M-7.7%721K1.76
    15 February 20231.4M-14.0%1.4M1.00
    31 January 20231.6M-43.2%2.1M1.00
    13 January 20232.8M+433.8%10.5M1.00
    30 December 2022528K-64.1%678K1.00
    15 December 20221.5M-25.9%826K1.78
    30 November 20222.0M+103.3%6.0M1.00
    15 November 2022977K-2.0%301K3.25
    31 October 2022997K-6.6%274K3.64
    14 October 20221.1M-10.8%426K2.51
    30 September 20221.2M+1.8%387K3.09
    15 September 20221.2M+31.4%805K1.46
    31 August 2022894K-14.4%521K1.72
    15 August 20221.0M-21.0%1.3M1.00
    29 July 20221.3M+1.3%1.2M1.12
    15 July 20221.3M+10.3%5.5M1.00
    30 June 20221.2M-67.6%1.9M1.00
    15 June 20223.6M-4.5%773K4.72
    31 May 20223.8M-5.6%787K4.85
    13 May 20224.0M+6.3%1.4M2.91
    29 April 20223.8M+37.8%1.1M3.40
    14 April 20222.8M-29.7%752K3.67
    31 March 20223.9M+2.6%1.7M2.34
    15 March 20223.8M+0.2%670K5.71
    28 February 20223.8M-2.2%471K8.11
    15 February 20223.9M+11.6%689K5.67
    31 January 20223.5M-5.4%868K4.03
    14 January 20223.7M+19.4%770K4.80
    31 December 20213.1M-22.4%3.0M1.03
    15 December 20214.0M+9.1%1.1M3.72
    30 November 20213.7M-21.8%1.1M3.46
    15 November 20214.7M-3.4%886K5.28
    29 October 20214.8M+7.5%547K8.85
    15 October 20214.5M-7.4%307K14.67
    30 September 20214.9M-7.2%646K7.53
    15 September 20215.2M-11.2%542K9.66
    31 August 20215.9M-11.7%632K9.34
    13 August 20216.7M-4.4%809K8.25
    30 July 20217.0M+5.1%525K13.29
    15 July 20216.6M+0.2%722K9.21
    30 June 20216.6M-0.6%1.0M6.48
    15 June 20216.7M+0.6%690K9.67
    28 May 20216.6M-1.4%527K12.59
    14 May 20216.7M+1.0%1.3M5.22
    30 April 20216.7M+7.7%785K8.49
    15 April 20216.2M-3.6%855K7.23
    31 March 20216.4M+63.5%1.0M6.22
    15 March 20213.9M+17.9%630K6.23
    26 February 20213.3M+0.0%627K5.30
    12 February 20213.3M-8.6%926K3.59
    29 January 20213.6M+20.8%2.0M1.84
    15 January 20213.0M+3.9%369K8.17
    31 December 20202.9M-3.5%668K4.34
    15 December 20203.0M-8.7%487K6.17
    30 November 20203.3M-10.2%294K11.18
    13 November 20203.7M-7.2%359K10.21
    30 October 20204.0M+16.2%413K9.57
    15 October 20203.4M+10.8%275K12.38
    30 September 20203.1M-7.0%396K7.76
    15 September 20203.3M-6.1%503K6.56
    31 August 20203.5M+5.9%318K11.06
    14 August 20203.3M+3.0%354K9.38
    31 July 20203.2M+20.8%383K8.43
    15 July 20202.7M-15.8%382K6.98
    30 June 20203.2M+88.4%662K4.79
    15 June 20201.7M+40.6%636K2.65
    29 May 20201.2M+1.8%651K1.84
    15 May 20201.2M+10.1%893K1.32
    30 April 20201.1M-14.4%496K2.16
    15 April 20201.2M+44.4%432K2.89
    31 March 2020864K-39.3%496K1.74
    13 March 20201.4M+11.4%466K3.06
    28 February 20201.3M+10.5%518K2.47
    14 February 20201.2M-12.0%314K3.69
    31 January 20201.3M-14.8%321K4.08
    15 January 20201.5M-0.9%305K5.05
    31 December 20191.6M-33.1%536K2.90
    13 December 20192.3M+12.0%385K6.03
    29 November 20192.1M-4.0%471K4.41
    15 November 20192.2M+9.8%464K4.66
    31 October 20192.0M+13.4%585K3.37
    15 October 20191.7M-5.0%823K2.11
    30 September 20191.8M-11.9%274K6.68
    13 September 20192.1M+14.5%259K8.03
    30 August 20191.8M+3.1%236K7.70
    15 August 20191.8M-0.3%356K4.94
    31 July 20191.8M-3.3%265K6.67
    15 July 20191.8M+9.2%374K4.88
    28 June 20191.7M-9.7%390K4.29
    14 June 20191.9M-2.7%285K6.49
    31 May 20191.9M-5.1%365K5.21
    15 May 20192.0M-12.4%497K4.04
    30 April 20192.3M-6.7%416K5.52
    15 April 20192.5M-1.1%345K7.13
    29 March 20192.5M+30.8%486K5.12
    15 March 20191.9M-7.0%1.1M1.74
    28 February 20192.0M-16.2%891K2.29
    15 February 20192.4M+3.4%314K7.77
    31 January 20192.4M+6.8%231K10.19
    15 January 20192.2M-7.5%300K7.37
    31 December 20182.4M+2.3%535K4.46
    14 December 20182.3M+5.3%500K4.67
    30 November 20182.2M-11.3%312K7.10
    15 November 20182.5M-4.9%527K4.74
    31 October 20182.6M-2.6%356K7.38
    15 October 20182.7M-3.3%359K7.51
    28 September 20182.8M+23.3%385K7.25
    14 September 20182.3M-6.6%474K4.77
    31 August 20182.4M+0.6%243K9.96
    15 August 20182.4M+11.6%329K7.32
    31 July 20182.2M-20.2%544K3.96
    13 July 20182.7M-3.9%538K5.03
    29 June 20182.8M+37.1%491K5.73
    15 June 20182.1M+17.4%656K3.13
    31 May 20181.7M+26.8%323K5.42
    15 May 20181.4M+33.3%361K3.82
    30 April 20181.0M-0.9%292K3.54
    13 April 20181.0M+1.7%302K3.45
    29 March 20181.0M-14.1%427K2.41
    15 March 20181.2M+8.3%582K2.05
    28 February 20181.1M+9.8%278K3.96
    15 February 20181.0M+8.2%299K3.35
    31 January 2018928K-19.9%292K3.18
    12 January 20181.2M+1.0%398K2.91
    29 December 20171.1M287K4.00
    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.