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Eton Pharmaceuticals, Inc. short interest

1.9M shares of Eton Pharmaceuticals were sold short at the 15 October 2026 settlement, the most since 27 Feb 2026. Short sellers would need 3.3 days of normal trading to buy them back.

Shares sold short1.9Mat 15 Oct 2026
Change on the settlement before+6.0%-36% over a year
Days to cover3.30at 588K shares a day
Of shares in issue6.87%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 since 27 Feb 2026, and the share price moved +180% 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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    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 15 Nov 2018 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 20261.9M+6.0%588K3.30
    30 September 20261.8M+18.9%625K2.94
    15 September 20261.5M+14.5%439K3.52
    31 August 20261.3M-5.6%682K1.98
    14 August 20261.4M+8.7%637K2.24
    31 July 20261.3M+7.1%633K2.07
    15 July 20261.2M-15.4%405K3.03
    30 June 20261.4M+1.7%488K2.97
    15 June 20261.4M+13.0%345K4.13
    29 May 20261.3M-18.6%450K2.80
    15 May 20261.5M-5.2%478K3.24
    30 April 20261.6M-8.9%299K5.47
    15 April 20261.8M-5.4%423K4.24
    31 March 20261.9M-0.2%526K3.60
    13 March 20261.9M-14.4%274K6.92
    27 February 20262.2M+5.2%318K6.98
    13 February 20262.1M+5.6%267K7.90
    30 January 20262.0M-1.6%182K10.95
    15 January 20262.0M-6.2%257K7.88
    31 December 20252.2M-11.8%181K11.93
    15 December 20252.5M-1.9%271K9.04
    28 November 20252.5M-10.2%292K8.56
    14 November 20252.8M-4.7%357K7.79
    31 October 20252.9M-3.3%195K14.94
    15 October 20253.0M-10.5%317K9.54
    30 September 20253.4M-7.5%414K8.14
    15 September 20253.6M-1.2%204K17.90
    29 August 20253.7M+3.5%238K15.52
    15 August 20253.6M+7.4%399K8.93
    31 July 20253.3M+8.9%392K8.48
    15 July 20253.0M+29.0%494K6.17
    30 June 20252.4M+111.0%776K3.04
    13 June 20251.1M+36.0%500K2.24
    30 May 2025824K+39.7%401K2.05
    15 May 2025590K-16.1%303K1.94
    30 April 2025702K+74.5%231K3.04
    15 April 2025403K+17.1%263K1.53
    31 March 2025344K+46.0%259K1.33
    14 March 2025236K-18.6%182K1.30
    28 February 2025289K-18.0%313K1.00
    14 February 2025353K+3.5%256K1.38
    31 January 2025341K+4.1%383K1.00
    15 January 2025328K+33.7%331K1.00
    31 December 2024245K-11.8%148K1.66
    13 December 2024278K+1.5%205K1.36
    29 November 2024274K+32.6%295K1.00
    15 November 2024207K+7.6%261K1.00
    31 October 2024192K-6.2%145K1.33
    15 October 2024205K+62.0%270K1.00
    30 September 2024126K+67.4%151K1.00
    13 September 202475K+5.6%116K1.00
    30 August 202471K+2.6%89K1.00
    15 August 202470K-7.4%90K1.00
    31 July 202475K+23.3%49K1.52
    15 July 202461K-14.5%50K1.21
    28 June 202471K-9.4%35K2.02
    14 June 202479K+44.1%28K2.81
    31 May 202455K-35.9%55K1.00
    15 May 202485K-2.5%62K1.38
    30 April 202487K-41.0%46K1.91
    15 April 2024148K-32.8%62K2.39
    28 March 2024220K-9.3%95K2.32
    15 March 2024243K+6.9%69K3.54
    29 February 2024227K-38.0%47K4.80
    15 February 2024366K-4.6%48K7.63
    31 January 2024384K+0.7%58K6.66
    12 January 2024381K-14.5%111K3.43
    29 December 2023446K+22.5%96K4.64
    15 December 2023364K-41.4%69K5.28
    30 November 2023621K-17.6%83K7.49
    15 November 2023754K-21.1%97K7.77
    31 October 2023955K-5.6%65K14.75
    13 October 20231.0M+3.2%128K7.92
    29 September 2023981K+3.6%186K5.26
    15 September 2023947K-1.2%276K3.43
    31 August 2023959K-27.5%352K2.72
    15 August 20231.3M+150.6%1.7M1.00
    31 July 2023528K-6.2%59K8.87
    14 July 2023563K+3.8%68K8.25
    30 June 2023542K-1.8%83K6.52
    15 June 2023552K-1.9%32K17.44
    31 May 2023563K+6.1%49K11.54
    15 May 2023530K-9.7%45K11.80
    28 April 2023587K+7.4%28K20.76
    14 April 2023547K+6.9%45K12.29
    31 March 2023512K-1.3%77K6.63
    15 March 2023518K+10.9%52K10.05
    28 February 2023467K+5.5%36K12.83
    15 February 2023443K-5.8%56K7.92
    31 January 2023470K-14.1%92K5.10
    13 January 2023547K-10.9%72K7.59
    30 December 2022614K+16.0%70K8.83
    15 December 2022529K-6.4%71K7.45
    30 November 2022566K-13.7%47K12.15
    15 November 2022655K-1.3%94K7.01
    31 October 2022664K+1.2%99K6.74
    14 October 2022656K-6.5%41K16.05
    30 September 2022701K-1.6%59K11.92
    15 September 2022712K-1.7%27K26.40
    31 August 2022724K-12.2%115K6.27
    15 August 2022825K-9.9%90K9.14
    29 July 2022915K+32.0%789K1.16
    15 July 2022694K-3.1%68K10.25
    30 June 2022716K-2.4%119K6.01
    15 June 2022734K-4.5%55K13.22
    31 May 2022768K-9.9%75K10.26
    13 May 2022852K-2.2%70K12.22
    29 April 2022872K+0.5%53K16.41
    14 April 2022867K+33.1%369K2.35
    31 March 2022652K-7.2%90K7.23
    15 March 2022702K+1.1%55K12.87
    28 February 2022695K-12.2%75K9.28
    15 February 2022791K-12.1%114K6.91
    31 January 2022900K+34.5%262K3.43
    14 January 2022669K+3.2%202K3.31
    31 December 2021648K+5.7%221K2.93
    15 December 2021613K-7.2%221K2.78
    30 November 2021661K-8.2%356K1.86
    15 November 2021720K+36.0%845K1.00
    29 October 2021529K+8.6%368K1.44
    15 October 2021488K-32.3%190K2.57
    30 September 2021720K-40.8%150K4.82
    15 September 20211.2M-13.4%170K7.14
    31 August 20211.4M-16.7%351K4.00
    13 August 20211.7M+37.8%1.2M1.38
    30 July 20211.2M-6.1%151K8.12
    15 July 20211.3M-6.2%310K4.20
    30 June 20211.4M-22.8%784K1.77
    15 June 20211.8M+21.7%1.6M1.14
    28 May 20211.5M-4.3%408K3.62
    14 May 20211.5M+8.6%224K6.89
    30 April 20211.4M+17.2%153K9.26
    15 April 20211.2M+2.1%146K8.30
    31 March 20211.2M+17.9%181K6.56
    15 March 20211.0M+27.6%170K5.93
    26 February 2021789K-2.3%133K5.94
    12 February 2021807K-13.7%186K4.35
    29 January 2021935K-3.4%133K7.01
    15 January 2021968K+7.1%112K8.62
    31 December 2020904K+6.2%178K5.08
    15 December 2020852K-18.0%158K5.38
    30 November 20201.0M+0.4%164K6.32
    13 November 20201.0M+2.5%216K4.79
    30 October 20201.0M-5.9%339K2.98
    15 October 20201.1M+18.4%528K2.03
    30 September 2020907K+14.4%662K1.37
    15 September 2020793K+18.4%522K1.52
    31 August 2020670K-9.4%308K2.17
    14 August 2020739K+1.6%834K1.00
    31 July 2020727K-3.1%142K5.14
    15 July 2020750K+33.1%192K3.90
    30 June 2020563K+100.7%267K2.11
    15 June 2020281K-3.3%87K3.23
    29 May 2020290K-36.8%63K4.59
    15 May 2020459K-0.5%59K7.79
    30 April 2020461K-1.8%56K8.27
    15 April 2020470K-2.1%51K9.20
    31 March 2020480K+44.5%114K4.21
    13 March 2020332K+24.7%78K4.28
    28 February 2020267K+3.4%124K2.15
    14 February 2020258K-17.7%44K5.82
    31 January 2020313K-0.0%54K5.82
    15 January 2020313K-24.1%67K4.65
    31 December 2019413K+12.9%48K8.64
    13 December 2019366K-4.9%57K6.47
    29 November 2019384K+1.6%69K5.55
    15 November 2019378K+12.3%53K7.11
    31 October 2019337K+0.6%325K1.04
    15 October 2019335K+33.9%65K5.15
    30 September 2019250K-20.7%126K1.98
    13 September 2019315K+0.4%61K5.16
    30 August 2019314K+9.4%86K3.64
    15 August 2019287K+37.6%85K3.38
    31 July 2019208K+311.4%70K2.98
    15 July 201951K+12.8%118K1.00
    28 June 201945K+9.6%41K1.08
    14 June 201941K-15.9%38K1.09
    31 May 201949K-14.5%94K1.00
    15 May 201957K+17.8%44K1.28
    30 April 201948K+1.7%15K3.28
    15 April 201948K-27.2%17K2.74
    29 March 201965K+14.4%21K3.18
    15 March 201957K-34.0%27K2.09
    28 February 201987K+243.9%98K1.00
    15 February 201925K+97.6%12K2.16
    31 January 201913K+776.7%16K1.00
    15 January 20191K-49.5%15K1.00
    31 December 20183K+859.7%20K1.00
    14 December 2018300-2.0%17K1.00
    30 November 2018306-99.5%25K1.00
    15 November 201858K57K1.01
    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.