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Mesa Laboratories Inc. short interest

391K shares of Mesa Laboratories were sold short at the 15 October 2026 settlement, near the top of its range over the last year (198K to 447K). Short sellers would need 3.8 days of normal trading to buy them back.

Shares sold short391Kat 15 Oct 2026
Change on the settlement before-12.6%+14% over a year
Days to cover3.83at 102K shares a day
Of shares in issue6.98%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 (198K to 447K), and the share price moved +88% 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 29 Dec 2017 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 2026391K-12.6%102K3.83
    30 September 2026447K+10.8%121K3.70
    15 September 2026404K-7.0%134K3.02
    31 August 2026434K+28.5%160K2.72
    14 August 2026338K+4.2%170K1.99
    31 July 2026324K+18.2%130K2.50
    15 July 2026274K-0.7%227K1.21
    30 June 2026276K+15.5%209K1.32
    15 June 2026239K-14.5%268K1.00
    29 May 2026280K+20.5%211K1.33
    15 May 2026232K+16.9%138K1.68
    30 April 2026199K+0.1%108K1.84
    15 April 2026198K-10.1%105K1.89
    31 March 2026221K-1.7%109K2.03
    13 March 2026224K+0.3%174K1.29
    27 February 2026224K+5.7%79K2.85
    13 February 2026212K-5.1%84K2.52
    30 January 2026223K-9.6%80K2.78
    15 January 2026247K-12.1%110K2.24
    31 December 2025281K-0.9%89K3.16
    15 December 2025283K+1.1%123K2.31
    28 November 2025280K-14.2%242K1.16
    14 November 2025327K-10.4%121K2.70
    31 October 2025365K+6.1%80K4.55
    15 October 2025344K+3.3%104K3.30
    30 September 2025333K-20.4%241K1.38
    15 September 2025418K+4.7%157K2.66
    29 August 2025399K+0.2%86K4.62
    15 August 2025399K+28.0%148K2.70
    31 July 2025312K+23.1%112K2.79
    15 July 2025253K+16.0%181K1.40
    30 June 2025218K+18.3%269K1.00
    13 June 2025184K+0.7%158K1.16
    30 May 2025183K-1.1%43K4.28
    15 May 2025185K-7.8%37K5.05
    30 April 2025201K-10.4%44K4.55
    15 April 2025224K+20.1%56K4.03
    31 March 2025187K-0.9%56K3.34
    14 March 2025188K-5.2%40K4.66
    28 February 2025199K+3.7%26K7.74
    14 February 2025192K+3.4%44K4.40
    31 January 2025185K-2.6%30K6.21
    15 January 2025190K-1.9%31K6.08
    31 December 2024194K+25.0%48K4.07
    13 December 2024155K+4.6%32K4.79
    29 November 2024148K+20.6%43K3.42
    15 November 2024123K-18.1%40K3.08
    31 October 2024150K-10.9%34K4.37
    15 October 2024169K+11.7%22K7.54
    30 September 2024151K-7.0%31K4.83
    13 September 2024162K-26.5%40K4.05
    30 August 2024221K+16.6%29K7.66
    15 August 2024189K+4.8%33K5.75
    31 July 2024181K-4.0%36K4.96
    15 July 2024188K-6.4%38K5.00
    28 June 2024201K+4.8%67K3.00
    14 June 2024192K-1.1%54K3.58
    31 May 2024194K+8.6%39K4.99
    15 May 2024179K+19.2%30K5.97
    30 April 2024150K-3.8%30K5.04
    15 April 2024156K-18.3%43K3.64
    28 March 2024191K-2.7%33K5.71
    15 March 2024196K-17.2%39K5.01
    29 February 2024237K+3.9%47K5.07
    15 February 2024228K+2.3%61K3.74
    31 January 2024223K+3.5%49K4.55
    12 January 2024216K-4.9%73K2.94
    29 December 2023227K-1.5%66K3.41
    15 December 2023230K-21.8%66K3.49
    30 November 2023295K+0.3%38K7.68
    15 November 2023294K-0.7%48K6.15
    31 October 2023296K+5.5%38K7.71
    13 October 2023281K-15.1%43K6.56
    29 September 2023330K-7.1%39K8.37
    15 September 2023356K-1.8%36K9.75
    31 August 2023362K+5.1%27K13.29
    15 August 2023345K-0.7%31K11.27
    31 July 2023347K-2.7%39K8.88
    14 July 2023357K-8.6%30K11.95
    30 June 2023390K-4.9%61K6.38
    15 June 2023411K-4.8%50K8.16
    31 May 2023431K-3.3%61K7.09
    15 May 2023446K-4.3%32K13.91
    28 April 2023466K+3.8%43K10.83
    14 April 2023449K+2.5%49K9.25
    31 March 2023438K-3.1%45K9.76
    15 March 2023452K-3.8%42K10.68
    28 February 2023470K+7.5%42K11.13
    15 February 2023437K+2.7%71K6.17
    31 January 2023426K-2.1%81K5.23
    13 January 2023435K+9.5%86K5.07
    30 December 2022397K-3.8%84K4.72
    15 December 2022413K+6.5%84K4.94
    30 November 2022388K+3.7%65K6.01
    15 November 2022374K+17.5%84K4.45
    31 October 2022318K+7.9%62K5.17
    14 October 2022295K+0.6%52K5.64
    30 September 2022293K-13.3%82K3.57
    15 September 2022338K-10.1%58K5.85
    31 August 2022376K-7.3%68K5.50
    15 August 2022406K-11.2%40K10.26
    29 July 2022457K+0.8%31K14.59
    15 July 2022453K+2.5%41K11.07
    30 June 2022442K-1.1%61K7.30
    15 June 2022447K+22.5%32K14.05
    31 May 2022365K-0.4%26K14.15
    13 May 2022366K-1.0%32K11.48
    29 April 2022370K+2.2%31K11.98
    14 April 2022362K+6.9%35K10.41
    31 March 2022338K+5.4%22K15.04
    15 March 2022321K+6.0%19K17.33
    28 February 2022303K+1.0%20K15.11
    15 February 2022300K+2.1%25K11.83
    31 January 2022294K-2.0%29K10.27
    14 January 2022300K+1.0%21K14.12
    31 December 2021297K+2.1%25K11.99
    15 December 2021291K+0.9%27K10.64
    30 November 2021288K+50.9%44K6.61
    15 November 2021191K-2.5%29K6.61
    29 October 2021196K+9.0%50K3.94
    15 October 2021180K+3.9%23K7.95
    30 September 2021173K-4.7%47K3.70
    15 September 2021181K+8.1%40K4.54
    31 August 2021168K+0.1%22K7.61
    13 August 2021168K+9.0%15K11.41
    30 July 2021154K-11.5%15K10.20
    15 July 2021174K-7.4%15K11.58
    30 June 2021188K-7.4%43K4.37
    15 June 2021203K-8.2%26K7.90
    28 May 2021221K+3.7%16K13.51
    14 May 2021213K+5.9%15K13.91
    30 April 2021201K-7.3%19K10.50
    15 April 2021217K-23.0%30K7.15
    31 March 2021282K-3.2%36K7.76
    15 March 2021291K-3.8%21K13.64
    26 February 2021303K+1.0%25K12.01
    12 February 2021300K-5.4%23K13.04
    29 January 2021317K-1.9%18K17.50
    15 January 2021323K+1.5%19K16.68
    31 December 2020318K-0.3%22K14.63
    15 December 2020319K-8.6%28K11.56
    30 November 2020349K+0.5%27K13.01
    13 November 2020347K+0.6%23K15.19
    30 October 2020345K-3.0%19K18.35
    15 October 2020356K-1.5%26K13.80
    30 September 2020362K+3.6%46K7.86
    15 September 2020349K-3.2%27K12.94
    31 August 2020361K+3.4%29K12.63
    14 August 2020349K-2.0%28K12.63
    31 July 2020356K-2.4%29K12.38
    15 July 2020364K-5.2%36K10.07
    30 June 2020384K-12.6%52K7.35
    15 June 2020440K-17.0%70K6.31
    29 May 2020530K+4.8%23K22.76
    15 May 2020506K-2.5%35K14.47
    30 April 2020518K+0.1%21K25.10
    15 April 2020518K-5.8%33K15.62
    31 March 2020550K-8.7%48K11.50
    13 March 2020602K-2.5%39K15.34
    28 February 2020618K+4.5%37K16.62
    14 February 2020591K+10.0%38K15.42
    31 January 2020537K-0.5%37K14.50
    15 January 2020540K-2.2%31K17.32
    31 December 2019552K-1.4%37K14.95
    13 December 2019560K-6.7%35K16.02
    29 November 2019600K+1.7%29K20.44
    15 November 2019590K-1.4%34K17.27
    31 October 2019598K+2.3%31K19.13
    15 October 2019585K-3.8%37K15.91
    30 September 2019608K-0.5%56K10.85
    13 September 2019611K-1.9%62K9.78
    30 August 2019622K-2.3%79K7.88
    15 August 2019637K+5.1%155K4.10
    31 July 2019606K+0.2%63K9.57
    15 July 2019605K+31.2%66K9.15
    28 June 2019461K+86.8%245K1.88
    14 June 2019247K+16.4%86K2.89
    31 May 2019212K+5.3%48K4.42
    15 May 2019201K+1.9%46K4.38
    30 April 2019197K-1.5%34K5.85
    15 April 2019201K-3.7%24K8.32
    29 March 2019208K-3.4%38K5.53
    15 March 2019216K-6.4%22K10.03
    28 February 2019231K-0.8%16K14.31
    15 February 2019233K-25.8%36K6.46
    31 January 2019313K-1.1%15K21.29
    15 January 2019317K-4.9%24K12.99
    31 December 2018333K-9.3%42K7.89
    14 December 2018367K-14.9%36K10.12
    30 November 2018432K+2.7%31K14.08
    15 November 2018420K+9.8%23K18.50
    31 October 2018383K+27.3%40K9.59
    15 October 2018301K+12.1%23K12.93
    28 September 2018268K+12.1%25K10.62
    14 September 2018239K-1.8%10K23.66
    31 August 2018244K+0.5%14K16.90
    15 August 2018243K-8.5%24K9.99
    31 July 2018265K-9.4%23K11.30
    13 July 2018293K-3.3%17K16.81
    29 June 2018302K-0.3%32K9.57
    15 June 2018303K-13.5%40K7.52
    31 May 2018351K-0.7%16K21.70
    15 May 2018353K-3.5%10K37.12
    30 April 2018366K+3.8%16K23.52
    13 April 2018353K+5.7%29K12.35
    29 March 2018334K+1.1%15K22.08
    15 March 2018330K+0.4%11K29.31
    28 February 2018329K+1.2%13K24.75
    15 February 2018325K+4.3%25K12.83
    31 January 2018312K+4.2%15K20.17
    12 January 2018299K+0.4%16K19.25
    29 December 2017298K14K22.00
    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.