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OmniAb, Inc. short interest

8.5M shares of OmniAb were sold short at the 15 October 2026 settlement, the most since 30 Sep 2025. Short sellers would need 6.7 days of normal trading to buy them back.

Shares sold short8.5Mat 15 Oct 2026
Change on the settlement before+4.2%+43% over a year
Days to cover6.67at 1.3M shares a day
Of shares in issue5.86%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 30 Sep 2025, and the share price moved +206% 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 15 Nov 2022 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 20268.5M+4.2%1.3M6.67
    30 September 20268.2M+15.0%1.2M6.75
    15 September 20267.1M+19.1%1.7M4.11
    31 August 20266.0M-4.2%3.2M1.85
    14 August 20266.2M+4.1%961K6.50
    31 July 20266.0M+2.0%340K17.65
    15 July 20265.9M+23.6%573K10.26
    30 June 20264.8M+1.2%746K6.37
    15 June 20264.7M+0.4%471K9.98
    29 May 20264.7M-4.9%849K5.51
    15 May 20264.9M-6.4%1.2M4.27
    30 April 20265.3M-3.8%653K8.05
    15 April 20265.5M-8.2%492K11.10
    31 March 20265.9M+5.5%311K19.13
    13 March 20265.6M-2.7%351K16.05
    27 February 20265.8M+0.1%207K27.99
    13 February 20265.8M-0.8%361K16.04
    30 January 20265.8M-1.4%491K11.88
    15 January 20265.9M-1.8%271K21.86
    31 December 20256.0M+14.4%676K8.92
    15 December 20255.3M-2.0%527K10.00
    28 November 20255.4M-3.4%632K8.51
    14 November 20255.6M-3.4%481K11.56
    31 October 20255.8M-3.7%549K10.49
    15 October 20256.0M-30.2%513K11.65
    30 September 20258.6M+3.2%679K12.62
    15 September 20258.3M+2.4%410K20.23
    29 August 20258.1M-0.2%479K16.91
    15 August 20258.1M+3.4%502K16.18
    31 July 20257.9M-4.1%477K16.47
    15 July 20258.2M-1.8%657K12.47
    30 June 20258.3M+3.8%682K12.23
    13 June 20258.0M+1.8%1.5M5.21
    30 May 20257.9M+8.9%732K10.78
    15 May 20257.2M-15.8%913K7.94
    30 April 20258.6M-0.6%1.6M5.41
    15 April 20258.7M-4.5%783K11.06
    31 March 20259.1M+21.3%1.1M8.27
    14 March 20257.5M-6.1%396K18.89
    28 February 20258.0M-6.1%755K10.55
    14 February 20258.5M+7.2%475K17.86
    31 January 20257.9M+1.5%600K13.19
    15 January 20257.8M+1.8%364K21.45
    31 December 20247.7M+7.6%566K13.53
    13 December 20247.1M-7.4%418K17.03
    29 November 20247.7M+4.4%505K15.25
    15 November 20247.4M-7.6%570K12.93
    31 October 20248.0M-4.4%300K26.55
    15 October 20248.3M+1.2%273K30.50
    30 September 20248.2M-0.0%393K20.98
    13 September 20248.2M+6.5%435K18.97
    30 August 20247.7M+9.1%434K17.83
    15 August 20247.1M-3.3%478K14.85
    31 July 20247.3M-11.9%538K13.65
    15 July 20248.3M+32.4%746K11.16
    28 June 20246.3M-5.7%994K6.33
    14 June 20246.7M+18.1%548K12.18
    31 May 20245.7M+1.4%566K9.98
    15 May 20245.6M-4.0%570K9.79
    30 April 20245.8M+5.5%587K9.89
    15 April 20245.5M+7.0%474K11.62
    28 March 20245.1M+1.3%597K8.63
    15 March 20245.1M+6.7%435K11.68
    29 February 20244.8M-6.3%495K9.62
    15 February 20245.1M-0.2%363K13.99
    31 January 20245.1M+4.1%326K15.59
    12 January 20244.9M-7.1%472K10.35
    29 December 20235.3M+4.4%808K6.51
    15 December 20235.0M+7.9%653K7.71
    30 November 20234.7M+7.6%431K10.83
    15 November 20234.3M-11.8%544K7.99
    31 October 20234.9M-3.2%411K11.98
    13 October 20235.1M+4.9%331K15.37
    29 September 20234.8M+4.8%449K10.80
    15 September 20234.6M+9.2%365K12.68
    31 August 20234.2M-0.1%463K9.15
    15 August 20234.2M-3.4%660K6.41
    31 July 20234.4M+2.4%418K10.50
    14 July 20234.3M-0.4%522K8.21
    30 June 20234.3M+14.5%941K4.58
    15 June 20233.8M-5.5%588K6.39
    31 May 20234.0M-8.5%636K6.26
    15 May 20234.4M-1.4%525K8.28
    28 April 20234.4M+15.8%609K7.25
    14 April 20233.8M-2.2%558K6.82
    31 March 20233.9M-18.4%763K5.10
    15 March 20234.8M+20.2%780K6.12
    28 February 20234.0M+4.7%676K5.87
    15 February 20233.8M+3.2%670K5.66
    31 January 20233.7M-5.4%525K6.99
    13 January 20233.9M+19.7%576K6.73
    30 December 20223.2M+16.3%1.5M2.12
    15 December 20222.8M+19.3%1.4M1.98
    30 November 20222.3M-3.3%1.3M1.81
    15 November 20222.4M4.5M1.00
    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.