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Syndax Pharmaceuticals Inc. short interest

18.0M shares of Syndax Pharmaceuticals were sold short at the 15 October 2026 settlement, the fewest since 29 May 2026. Short sellers would need 7.6 days of normal trading to buy them back.

Shares sold short18.0Mat 15 Oct 2026
Change on the settlement before-1.3%-18% over a year
Days to cover7.64at 2.4M shares a day
Of shares in issue20.19%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 fewest since 29 May 2026, and the share price moved -6% 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 202618.0M-1.3%2.4M7.64
    30 September 202618.2M-11.7%2.2M8.47
    15 September 202620.7M-4.7%1.4M14.73
    31 August 202621.7M-5.3%1.1M19.65
    14 August 202622.9M+1.0%1.5M15.03
    31 July 202622.7M+8.9%1.2M18.58
    15 July 202620.8M-4.6%2.1M9.83
    30 June 202621.8M+9.9%2.5M8.56
    15 June 202619.9M+19.3%2.2M9.10
    29 May 202616.6M-23.4%1.0M16.02
    15 May 202621.7M+9.0%2.1M10.54
    30 April 202619.9M-5.0%1.6M12.66
    15 April 202621.0M+1.3%1.4M15.24
    31 March 202620.7M+1.0%1.5M13.63
    13 March 202620.5M-6.0%1.5M13.48
    27 February 202621.8M-1.4%1.1M19.86
    13 February 202622.1M+4.6%1.2M17.85
    30 January 202621.1M-5.4%1.2M17.22
    15 January 202622.3M-1.0%1.4M16.06
    31 December 202522.6M-1.1%1.2M18.21
    15 December 202522.8M-9.5%1.8M12.48
    28 November 202525.2M-1.6%2.4M10.65
    14 November 202525.6M+1.1%3.4M7.59
    31 October 202525.3M+15.1%4.3M5.92
    15 October 202522.0M-3.4%2.0M10.96
    30 September 202522.8M-1.4%2.1M10.98
    15 September 202523.1M+10.6%1.8M12.77
    29 August 202520.9M+1.5%2.1M9.76
    15 August 202520.6M-13.8%3.7M5.62
    31 July 202523.9M+0.9%1.8M13.62
    15 July 202523.7M-0.7%1.8M13.26
    30 June 202523.9M+8.5%2.2M10.65
    13 June 202522.0M-4.9%1.4M15.40
    30 May 202523.1M+6.5%2.7M8.60
    15 May 202521.7M+0.3%3.4M6.49
    30 April 202521.7M+2.3%1.6M13.47
    15 April 202521.2M+9.3%2.3M9.32
    31 March 202519.4M+2.9%1.4M13.69
    14 March 202518.8M-2.0%2.2M8.53
    28 February 202519.2M-10.9%2.2M8.78
    14 February 202521.6M-2.9%2.5M8.55
    31 January 202522.2M-0.8%2.2M9.95
    15 January 202522.4M+5.0%1.9M11.55
    31 December 202421.3M+30.2%3.1M6.77
    13 December 202416.4M+13.7%2.0M8.07
    29 November 202414.4M+35.8%2.2M6.63
    15 November 202410.6M-0.5%2.6M4.05
    31 October 202410.7M+1.4%652K16.34
    15 October 202410.5M+4.2%734K14.31
    30 September 202410.1M+4.3%1.2M8.25
    13 September 20249.7M+1.9%1.2M8.13
    30 August 20249.5M+0.6%574K16.55
    15 August 20249.4M+9.9%1.0M9.02
    31 July 20248.6M+0.8%1.1M7.64
    15 July 20248.5M+2.1%920K9.26
    28 June 20248.3M-15.9%1.4M5.85
    14 June 20249.9M+2.8%1.1M8.83
    31 May 20249.6M-3.8%1.0M9.54
    15 May 202410.0M-0.8%940K10.67
    30 April 202410.1M+5.3%901K11.22
    15 April 20249.6M-0.2%879K10.92
    28 March 20249.6M+15.5%1.2M8.17
    15 March 20248.3M-8.4%1.4M6.08
    29 February 20249.1M+5.7%1.0M8.74
    15 February 20248.6M-1.0%1.1M7.99
    31 January 20248.7M+0.0%1.3M6.83
    12 January 20248.7M+3.6%1.2M7.32
    29 December 20238.4M-18.9%1.5M5.48
    15 December 202310.3M+1.0%2.8M3.70
    30 November 202310.2M-3.7%1.1M9.71
    15 November 202310.6M+6.4%1.5M7.06
    31 October 202310.0M+17.5%2.1M4.66
    13 October 20238.5M+12.0%3.0M2.84
    29 September 20237.6M-0.1%1.8M4.10
    15 September 20237.6M+9.1%1.1M6.77
    31 August 20237.0M-2.8%598K11.64
    15 August 20237.2M+7.7%755K9.48
    31 July 20236.6M+12.1%821K8.10
    14 July 20235.9M+3.3%537K11.05
    30 June 20235.7M+2.6%983K5.84
    15 June 20235.6M-10.0%1.1M4.90
    31 May 20236.2M-2.5%1.0M6.15
    15 May 20236.4M-2.1%844K7.57
    28 April 20236.5M-5.1%612K10.65
    14 April 20236.9M-9.9%933K7.37
    31 March 20237.6M+12.4%1.1M7.19
    15 March 20236.8M+13.3%890K7.62
    28 February 20236.0M+8.6%589K10.17
    15 February 20235.5M+0.4%614K8.98
    31 January 20235.5M+0.6%651K8.43
    13 January 20235.5M-14.3%916K5.96
    30 December 20226.4M+22.5%846K7.54
    15 December 20225.2M+17.6%1.4M3.73
    30 November 20224.4M+5.9%516K8.58
    15 November 20224.2M+2.7%951K4.39
    31 October 20224.1M-9.1%711K5.72
    14 October 20224.5M+0.8%738K6.06
    30 September 20224.4M-3.4%637K6.97
    15 September 20224.6M-0.0%693K6.64
    31 August 20224.6M+0.5%459K10.02
    15 August 20224.6M+5.0%790K5.79
    29 July 20224.4M+2.6%567K7.69
    15 July 20224.2M-24.8%729K5.83
    30 June 20225.7M-4.2%636K8.89
    15 June 20225.9M-0.7%649K9.08
    31 May 20225.9M-6.4%459K12.95
    13 May 20226.3M-1.6%694K9.14
    29 April 20226.5M+6.0%494K13.07
    14 April 20226.1M+9.1%711K8.56
    31 March 20225.6M-9.5%500K11.17
    15 March 20226.2M+18.8%656K9.40
    28 February 20225.2M+5.4%451K11.50
    15 February 20224.9M+17.0%497K9.92
    31 January 20224.2M+25.4%519K8.12
    14 January 20223.4M-0.2%398K8.43
    31 December 20213.4M-5.3%748K4.50
    15 December 20213.6M+11.9%766K4.63
    30 November 20213.2M-6.7%410K7.75
    15 November 20213.4M-45.7%650K5.23
    29 October 20216.3M-1.0%340K18.44
    15 October 20216.3M-9.1%565K11.19
    30 September 20217.0M-11.0%785K8.87
    15 September 20217.8M-5.2%481K16.25
    31 August 20218.2M+2.7%388K21.24
    13 August 20218.0M-1.9%357K22.50
    30 July 20218.2M-5.2%377K21.71
    15 July 20218.6M+10.0%410K21.04
    30 June 20217.9M+1.7%751K10.45
    15 June 20217.7M+2.5%452K17.07
    28 May 20217.5M+3.8%315K23.90
    14 May 20217.3M-1.2%781K9.29
    30 April 20217.3M+16.4%1.9M3.86
    15 April 20216.3M-7.2%529K11.93
    31 March 20216.8M+28.0%744K9.13
    15 March 20215.3M+7.7%822K6.46
    26 February 20214.9M-0.1%528K9.33
    12 February 20214.9M+2.1%388K12.71
    29 January 20214.8M-10.1%723K6.68
    15 January 20215.4M-2.6%383K14.05
    31 December 20205.5M+15.7%810K6.81
    15 December 20204.8M+5.4%759K6.29
    30 November 20204.5M-1.7%481K9.40
    13 November 20204.6M+5.1%861K5.35
    30 October 20204.4M-4.8%617K7.09
    15 October 20204.6M+2.4%438K10.49
    30 September 20204.5M+23.0%375K11.99
    15 September 20203.7M+1.8%246K14.86
    31 August 20203.6M+1.2%198K18.12
    14 August 20203.5M+3.8%309K11.47
    31 July 20203.4M-4.8%196K17.43
    15 July 20203.6M-6.1%267K13.41
    30 June 20203.8M+18.7%529K7.22
    15 June 20203.2M+11.2%409K7.86
    29 May 20202.9M+28.7%1.5M1.87
    15 May 20202.2M+27.4%715K3.15
    30 April 20201.8M-0.4%1.7M1.06
    15 April 20201.8M-1.5%172K10.30
    31 March 20201.8M+48.9%233K7.72
    13 March 20201.2M+34.7%272K4.43
    28 February 2020896K+6.4%262K3.42
    14 February 2020842K+21.8%172K4.89
    31 January 2020691K+13.4%112K6.17
    15 January 2020610K+0.5%91K6.72
    31 December 2019606K+2.0%100K6.06
    13 December 2019595K+12.5%136K4.36
    29 November 2019529K-18.3%113K4.66
    15 November 2019647K-10.0%97K6.66
    31 October 2019719K-5.0%140K5.13
    15 October 2019756K+8.0%248K3.05
    30 September 2019701K+23.4%166K4.23
    13 September 2019568K-10.3%119K4.78
    30 August 2019633K+5.7%156K4.05
    15 August 2019599K-7.5%171K3.51
    31 July 2019647K-7.7%98K6.61
    15 July 2019701K+7.3%130K5.38
    28 June 2019653K-10.3%257K2.54
    14 June 2019728K+12.7%91K7.99
    31 May 2019646K+10.4%124K5.23
    15 May 2019586K+0.2%203K2.88
    30 April 2019584K+17.9%158K3.69
    15 April 2019496K-7.3%254K1.96
    29 March 2019535K-2.6%268K2.00
    15 March 2019549K-10.6%185K2.97
    28 February 2019614K-11.2%88K6.97
    15 February 2019692K-4.9%101K6.82
    31 January 2019728K-19.6%133K5.48
    15 January 2019905K+3.5%195K4.65
    31 December 2018875K+4.3%339K2.58
    14 December 2018839K-9.6%237K3.54
    30 November 2018928K-2.7%251K3.70
    15 November 2018954K-21.5%257K3.72
    31 October 20181.2M-25.1%488K2.49
    15 October 20181.6M-12.5%359K4.51
    28 September 20181.9M+3.7%502K3.69
    14 September 20181.8M-0.3%248K7.20
    31 August 20181.8M-1.7%275K6.51
    15 August 20181.8M-0.8%272K6.70
    31 July 20181.8M-12.0%288K6.39
    13 July 20182.1M-15.6%306K6.83
    29 June 20182.5M+19.3%335K7.38
    15 June 20182.1M+59.6%366K5.67
    31 May 20181.3M+26.5%494K2.63
    15 May 20181.0M+5.2%219K4.70
    30 April 2018977K-2.5%160K6.11
    13 April 20181.0M+3.6%372K2.70
    29 March 2018967K-42.3%352K2.75
    15 March 20181.7M-9.7%644K2.60
    28 February 20181.9M+0.0%271K6.86
    15 February 20181.9M+12.5%350K5.31
    31 January 20181.7M+8.0%554K2.98
    12 January 20181.5M+46.0%259K5.90
    29 December 20171.0M150K6.96
    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.