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Stock research / United States / SES / Short interest

SES AI Corp. short interest

42.9M shares of SES AI were sold short at the 15 October 2026 settlement, near the top of its range over the last year (4.2M to 51.8M). Short sellers would need 1.3 days of normal trading to buy them back.

Shares sold short42.9Mat 15 Oct 2026
Change on the settlement before-16.2%+428% over a year
Days to cover1.30at 33.0M shares a day
Of shares in issue11.56%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 top of its range over the last year (4.2M to 51.8M), and the share price moved -78% 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 202642.9M-16.2%33.0M1.30
    30 September 202651.2M-1.1%19.5M2.63
    15 September 202651.8M+16.4%22.5M2.30
    31 August 202644.5M+2.6%9.5M4.67
    14 August 202643.3M-2.0%16.8M2.58
    31 July 202644.2M+32.1%21.5M2.06
    15 July 202633.5M+8.4%13.2M2.53
    30 June 202630.9M+39.3%13.0M2.37
    15 June 202622.2M-3.3%6.7M3.29
    29 May 202622.9M-0.1%10.8M2.11
    15 May 202623.0M+33.4%13.1M1.76
    30 April 202617.2M+22.6%10.1M1.70
    15 April 202614.0M+7.5%6.2M2.27
    31 March 202613.1M+8.5%4.8M2.74
    13 March 202612.0M-15.6%15.7M1.00
    27 February 202614.3M+2.3%5.9M2.43
    13 February 202613.9M+17.1%5.8M2.42
    30 January 202611.9M+21.7%8.5M1.40
    15 January 20269.8M+5.9%6.0M1.63
    31 December 20259.2M+5.6%5.5M1.67
    15 December 20258.8M+66.0%7.2M1.22
    28 November 20255.3M+24.7%6.9M1.00
    14 November 20254.2M+0.2%11.6M1.00
    31 October 20254.2M-48.1%19.1M1.00
    15 October 20258.1M+61.9%30.3M1.00
    30 September 20255.0M+31.0%16.8M1.00
    15 September 20253.8M-6.5%4.2M1.00
    29 August 20254.1M-33.4%4.0M1.02
    15 August 20256.2M+27.9%7.2M1.00
    31 July 20254.8M+8.8%10.6M1.00
    15 July 20254.4M-5.2%6.5M1.00
    30 June 20254.7M-55.7%9.8M1.00
    13 June 202510.5M-38.7%9.6M1.09
    30 May 202517.2M-16.7%13.1M1.32
    15 May 202520.6M-6.7%12.6M1.64
    30 April 202522.1M+11.5%20.7M1.07
    15 April 202519.8M-16.0%12.1M1.64
    31 March 202523.6M+18.9%47.4M1.00
    14 March 202519.8M+20.8%15.8M1.25
    28 February 202516.4M-11.8%16.6M1.00
    14 February 202518.6M-7.6%16.0M1.16
    31 January 202520.1M+80.4%50.5M1.00
    15 January 202511.2M-36.9%31.4M1.00
    31 December 202417.7M+173.1%42.9M1.00
    13 December 20246.5M+11.7%2.2M2.91
    29 November 20245.8M+39.9%4.6M1.27
    15 November 20244.1M-20.3%4.2M1.00
    31 October 20245.2M+4.1%3.0M1.76
    15 October 20245.0M-8.8%2.2M2.24
    30 September 20245.5M-26.3%8.5M1.00
    13 September 20247.4M-8.9%339K21.90
    30 August 20248.2M-5.6%288K28.26
    15 August 20248.6M+10.8%510K16.94
    31 July 20247.8M+9.8%524K14.86
    15 July 20247.1M-2.9%551K12.88
    28 June 20247.3M+5.8%1.3M5.53
    14 June 20246.9M+6.9%560K12.33
    31 May 20246.5M-9.4%649K9.95
    15 May 20247.1M+15.1%476K14.99
    30 April 20246.2M+10.9%750K8.25
    15 April 20245.6M+5.2%614K9.10
    28 March 20245.3M-9.9%507K10.46
    15 March 20245.9M-8.9%482K12.23
    29 February 20246.5M+4.0%636K10.16
    15 February 20246.2M+4.0%562K11.07
    31 January 20246.0M-6.0%583K10.25
    12 January 20246.4M-22.5%649K9.81
    29 December 20238.2M+4.2%802K10.23
    15 December 20237.9M+31.9%566K13.91
    30 November 20236.0M-8.2%464K12.88
    15 November 20236.5M-21.7%483K13.45
    31 October 20238.3M+2.0%449K18.50
    13 October 20238.1M+9.3%498K16.36
    29 September 20237.5M+15.6%664K11.23
    15 September 20236.4M+1.7%485K13.28
    31 August 20236.3M-24.8%524K12.10
    15 August 20238.4M-15.1%660K12.79
    31 July 20239.9M+49.1%683K14.54
    14 July 20236.7M+6.5%935K7.12
    30 June 20236.3M+87.4%3.3M1.89
    15 June 20233.3M-10.6%872K3.83
    31 May 20233.7M+0.9%766K4.88
    15 May 20233.7M-13.9%891K4.16
    28 April 20234.3M-6.0%1.1M4.01
    14 April 20234.6M-1.8%518K8.82
    31 March 20234.7M-1.9%537K8.67
    15 March 20234.8M+2.0%510K9.32
    28 February 20234.7M-2.2%332K14.01
    15 February 20234.8M-6.6%567K8.41
    31 January 20235.1M-4.9%421K12.11
    13 January 20235.4M-3.7%239K22.42
    30 December 20225.6M+9.3%670K8.32
    15 December 20225.1M+5.9%420K12.14
    30 November 20224.8M-11.8%535K8.99
    15 November 20225.5M-4.6%455K12.00
    31 October 20225.7M-14.7%570K10.03
    14 October 20226.7M-30.1%383K17.51
    30 September 20229.6M+117.0%1.5M6.44
    15 September 20224.4M-3.8%1.4M3.14
    31 August 20224.6M-3.7%362K12.69
    15 August 20224.8M-10.2%538K8.87
    29 July 20225.3M+2.0%387K13.73
    15 July 20225.2M+14.7%384K13.53
    30 June 20224.5M+8.4%696K6.52
    15 June 20224.2M+4.1%989K4.23
    31 May 20224.0M+48.5%950K4.23
    13 May 20222.7M-9.9%578K4.68
    29 April 20223.0M+3.2%476K6.32
    14 April 20222.9M+13.8%480K6.08
    31 March 20222.6M+184.5%1.7M1.51
    15 March 2022900K+57.7%668K1.35
    28 February 2022571K-4.6%676K1.00
    15 February 2022598K+594.5%744K1.00
    15 May 202086K+7.2%24K3.65
    30 April 202080K+6.7%64K1.26
    15 April 202075K+6.4%31K2.40
    31 March 202071K+7.4%21K3.37
    13 March 202066K+11.3%22K2.98
    28 February 202059K-16.9%37K1.61
    14 February 202071K-19.6%26K2.76
    31 January 202089K-15.9%63K1.40
    15 January 2020105K+59.7%2.1M1.00
    31 December 201966K-26.9%35K1.87
    13 December 201990K+24.9%172K1.00
    29 November 201972K-19.7%112K1.00
    15 November 201990K-72.1%306K1.00
    31 October 2019322K+158.7%1.4M1.00
    15 October 2019125K+48.4%6.7M1.00
    30 September 201984K+39.6%63K1.33
    13 September 201960K-48.3%61K1.00
    30 August 2019116K+36.8%80K1.45
    15 August 201985K-28.4%78K1.09
    31 July 2019119K-32.9%158K1.00
    15 July 2019177K+45.7%415K1.00
    28 June 2019122K-10.2%72K1.68
    14 June 2019135K+26.9%125K1.08
    31 May 2019107K-10.1%51K2.09
    15 May 2019119K+61.6%59K2.00
    30 April 201973K+17.8%279K1.00
    15 April 201962K-4.1%136K1.00
    29 March 201965K-57.4%154K1.00
    15 March 2019153K+8.6%133K1.15
    28 February 2019140K+1.5%89K1.58
    15 February 2019138K-10.4%114K1.22
    31 January 2019154K+5.3%387K1.00
    15 January 2019147K-7.9%13K11.27
    31 December 2018159K-2.1%29K5.58
    14 December 2018162K-4.2%8K20.17
    30 November 2018170K-8.2%66K2.59
    15 November 2018185K+5.1%58K3.16
    31 October 2018176K-10.1%32K5.54
    15 October 2018195K-6.4%7K27.75
    28 September 2018209K+1.9%13K15.64
    14 September 2018205K+0.3%10K19.65
    31 August 2018204K-1.1%9K22.83
    15 August 2018207K+1.3%12K17.45
    31 July 2018204K+16.8%9K22.68
    13 July 2018175K+2.3%12K14.87
    29 June 2018171K-4.4%8K22.57
    15 June 2018179K-3.5%18K9.82
    31 May 2018185K+5.7%17K11.15
    15 May 2018175K+3.4%16K10.77
    30 April 2018169K-6.7%15K11.44
    13 April 2018182K-6.3%22K8.35
    29 March 2018194K+4.3%18K10.80
    15 March 2018186K+1.3%63K2.96
    28 February 2018183K+5.0%22K8.17
    15 February 2018174K+0.2%50K3.46
    31 January 2018174K-5.4%27K6.43
    12 January 2018184K-0.1%20K9.36
    29 December 2017184K38K4.84
    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.