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Phathom Pharmaceuticals, Inc. short interest

9.8M shares of Phathom Pharmaceuticals were sold short at the 15 October 2026 settlement, the fewest since 30 Apr 2026. Short sellers would need 6.9 days of normal trading to buy them back.

Shares sold short9.8Mat 15 Oct 2026
Change on the settlement before-3.2%-31% over a year
Days to cover6.93at 1.4M shares a day
Of shares in issue12.05%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 30 Apr 2026, and the share price moved -54% 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 31 Oct 2019 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 20269.8M-3.2%1.4M6.93
    30 September 202610.1M-0.5%1.4M7.36
    15 September 202610.2M-6.2%1.1M9.11
    31 August 202610.8M-8.1%983K11.01
    14 August 202611.8M-11.7%1.7M6.87
    31 July 202613.3M+9.9%1.5M8.70
    15 July 202612.1M+1.1%1.3M9.00
    30 June 202612.0M+7.4%1.0M11.67
    15 June 202611.2M+7.8%1.1M10.36
    29 May 202610.4M+0.6%1.1M9.41
    15 May 202610.3M+5.7%1.2M8.68
    30 April 20269.7M+2.5%1.7M5.88
    15 April 20269.5M-10.7%958K9.92
    31 March 202610.6M-8.7%1.2M9.23
    13 March 202611.7M+4.4%1.1M10.93
    27 February 202611.2M-4.7%1.1M9.81
    13 February 202611.7M+2.8%789K14.85
    30 January 202611.4M+8.3%1.0M10.88
    15 January 202610.5M-2.4%1.6M6.48
    31 December 202510.8M-15.0%1.0M10.51
    15 December 202512.7M-0.5%793K15.98
    28 November 202512.7M-2.6%790K16.13
    14 November 202513.1M-3.6%913K14.33
    31 October 202513.6M-4.0%999K13.59
    15 October 202514.1M+7.0%1.5M9.27
    30 September 202513.2M-5.7%1.2M10.71
    15 September 202514.0M+6.3%1.2M12.11
    29 August 202513.2M+8.9%1.0M12.86
    15 August 202512.1M+19.8%1.1M10.61
    31 July 202510.1M+4.2%1.0M9.83
    15 July 20259.7M+13.7%950K10.20
    30 June 20258.5M-22.8%1.7M4.90
    13 June 202511.0M+0.5%8.0M1.37
    30 May 202511.0M-1.8%1.1M9.97
    15 May 202511.2M+2.4%3.5M3.18
    30 April 202510.9M-4.1%1.0M10.89
    15 April 202511.4M-11.8%1.4M8.37
    31 March 202512.9M-10.1%1.3M10.06
    14 March 202514.4M+3.1%1.5M9.88
    28 February 202513.9M-6.3%923K15.09
    14 February 202514.9M+1.6%1.0M14.58
    31 January 202514.6M+3.0%1.1M13.41
    15 January 202514.2M-5.0%873K16.27
    31 December 202415.0M+5.8%1.0M14.43
    13 December 202414.1M+0.6%953K14.82
    29 November 202414.1M-4.2%1.1M12.63
    15 November 202414.7M-16.0%2.6M5.73
    31 October 202417.5M-0.6%959K18.21
    15 October 202417.6M+2.0%995K17.64
    30 September 202417.2M+11.0%1.2M14.14
    13 September 202415.5M+1.2%990K15.67
    30 August 202415.3M+7.6%990K15.49
    15 August 202414.2M+3.7%640K22.26
    31 July 202413.7M+5.0%941K14.60
    15 July 202413.1M-2.4%666K19.63
    28 June 202413.4M+2.3%652K20.56
    14 June 202413.1M+6.3%408K32.10
    31 May 202412.3M+1.2%471K26.15
    15 May 202412.2M+3.3%666K18.30
    30 April 202411.8M-2.0%475K24.82
    15 April 202412.0M+13.0%933K12.89
    28 March 202410.6M+1.9%828K12.86
    15 March 202410.4M+20.4%784K13.33
    29 February 20248.7M-6.3%1.7M5.22
    15 February 20249.3M+7.3%720K12.86
    31 January 20248.6M+5.3%632K13.66
    12 January 20248.2M+15.8%535K15.31
    29 December 20237.1M+12.9%351K20.16
    15 December 20236.3M+13.9%653K9.59
    30 November 20235.5M+13.1%447K12.31
    15 November 20234.9M+18.2%797K6.10
    31 October 20234.1M+4.4%347K11.87
    13 October 20233.9M+0.7%293K13.47
    29 September 20233.9M+41.8%494K7.92
    15 September 20232.8M-0.2%509K5.43
    31 August 20232.8M+6.7%260K10.63
    15 August 20232.6M-18.7%373K6.94
    31 July 20233.2M-25.9%191K16.72
    14 July 20234.3M+1.8%242K17.76
    30 June 20234.2M-3.1%407K10.39
    15 June 20234.4M+5.0%257K16.98
    31 May 20234.2M-8.1%559K7.44
    15 May 20234.5M-7.1%382K11.86
    28 April 20234.9M+0.3%233K20.89
    14 April 20234.9M+33.8%692K7.02
    31 March 20233.6M+18.4%301K12.05
    15 March 20233.1M+2.8%347K8.82
    28 February 20233.0M+10.8%405K7.36
    15 February 20232.7M+18.4%530K5.08
    31 January 20232.3M+8.7%340K6.68
    13 January 20232.1M+10.4%670K3.12
    30 December 20221.9M+19.4%157K12.05
    15 December 20221.6M-1.0%132K12.02
    30 November 20221.6M-5.1%114K14.02
    15 November 20221.7M-8.0%142K11.92
    31 October 20221.8M-8.5%156K11.76
    14 October 20222.0M-54.6%112K17.95
    30 September 20224.4M-22.4%509K8.69
    15 September 20225.7M-1.0%216K26.43
    31 August 20225.8M+4.9%185K31.12
    15 August 20225.5M+72.9%569K9.64
    29 July 20223.2M-1.8%93K34.06
    15 July 20223.2M+0.3%120K27.03
    30 June 20223.2M-0.4%325K9.92
    15 June 20223.2M+2.4%226K14.31
    31 May 20223.2M+1.9%356K8.87
    13 May 20223.1M+23.8%545K5.69
    29 April 20222.5M+2.8%98K25.61
    14 April 20222.4M+17.6%137K17.84
    31 March 20222.1M+15.3%123K16.77
    15 March 20221.8M-50.4%103K17.37
    28 February 20223.6M+3.6%106K34.19
    15 February 20223.5M+2.1%164K21.28
    31 January 20223.4M-2.7%122K27.97
    14 January 20223.5M-20.3%124K28.37
    31 December 20214.4M+43.8%120K36.67
    15 December 20213.1M+2.7%108K28.35
    30 November 20213.0M-21.1%181K16.50
    15 November 20213.8M+6.6%216K17.51
    29 October 20213.6M+100.7%420K8.46
    15 October 20211.8M+17.1%71K25.00
    30 September 20211.5M+8.4%89K16.95
    15 September 20211.4M-12.7%74K18.94
    31 August 20211.6M+0.8%78K20.49
    13 August 20211.6M+21.8%93K16.95
    30 July 20211.3M+4.8%69K18.94
    15 July 20211.2M+0.6%63K19.67
    30 June 20211.2M+19.3%180K6.87
    15 June 20211.0M+3.5%76K13.53
    28 May 2021999K+2.6%97K10.35
    14 May 2021974K+39.6%96K10.19
    30 April 2021698K+15.4%69K10.13
    15 April 2021605K+6.5%85K7.13
    31 March 2021568K+3.7%97K5.83
    15 March 2021548K+31.4%79K6.90
    26 February 2021417K-11.8%100K4.18
    12 February 2021473K-1.9%69K6.80
    29 January 2021482K-15.8%92K5.22
    15 January 2021572K-29.3%112K5.12
    31 December 2020809K+21.6%352K2.30
    15 December 2020666K-12.6%71K9.34
    30 November 2020761K-5.0%47K16.19
    13 November 2020801K-4.1%61K13.10
    30 October 2020836K+0.6%29K28.54
    15 October 2020831K+1.6%50K16.69
    30 September 2020818K-2.0%47K17.47
    15 September 2020834K-4.3%36K23.13
    31 August 2020872K-5.3%37K23.85
    14 August 2020921K-13.2%41K22.27
    31 July 20201.1M-11.8%48K22.09
    15 July 20201.2M-3.4%52K23.18
    30 June 20201.2M+22.4%167K7.47
    15 June 20201.0M-0.6%80K12.75
    29 May 20201.0M+2.3%72K14.25
    15 May 20201.0M+1.6%44K23.00
    30 April 2020985K+0.0%31K32.07
    15 April 2020985K+19.0%54K18.18
    31 March 2020827K+38.2%74K11.21
    13 March 2020598K-1.6%77K7.78
    28 February 2020608K-3.6%66K9.28
    14 February 2020631K+9.2%44K14.46
    31 January 2020578K-12.4%84K6.86
    15 January 2020659K-7.0%99K6.64
    31 December 2019709K+91.3%308K2.30
    13 December 2019371K+9.4%116K3.20
    29 November 2019339K+111.4%90K3.78
    15 November 2019160K+3318.2%82K1.94
    31 October 20195K107K1.00
    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.