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Applied Optoelectronics, Inc. short interest

16.3M shares of Applied Optoelectronics were sold short at the 15 October 2026 settlement, the most at any settlement since 29 Dec 2017, when our record starts. Short sellers would need 1.3 days of normal trading to buy them back.

Shares sold short16.3Mat 15 Oct 2026
Change on the settlement before+17.5%+25% over a year
Days to cover1.28at 12.7M shares a day
Of shares in issue19.31%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 at any settlement since 29 Dec 2017, when our record starts, and the share price moved +133% 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 202616.3M+17.5%12.7M1.28
    30 September 202613.9M+12.7%7.1M1.96
    15 September 202612.3M+1.8%6.2M1.97
    31 August 202612.1M+16.0%9.1M1.32
    14 August 202610.4M-0.1%15.1M1.00
    31 July 202610.4M+5.0%8.7M1.20
    15 July 20269.9M-7.6%8.7M1.14
    30 June 202610.8M+5.1%12.8M1.00
    15 June 202610.2M+2.0%15.5M1.00
    29 May 202610.0M+7.5%10.4M1.00
    15 May 20269.3M-7.9%13.2M1.00
    30 April 202610.1M+0.0%9.2M1.10
    15 April 202610.1M+10.4%14.5M1.00
    31 March 20269.2M-10.9%12.2M1.00
    13 March 202610.3M-2.5%14.4M1.00
    27 February 202610.6M-0.6%6.2M1.69
    13 February 202610.6M-8.2%5.1M2.09
    30 January 202611.6M-3.8%5.6M2.05
    15 January 202612.0M-1.8%4.8M2.49
    31 December 202512.2M-3.7%4.6M2.68
    15 December 202512.7M-11.7%5.2M2.45
    28 November 202514.4M+11.8%4.6M3.16
    14 November 202512.9M+5.3%6.8M1.90
    31 October 202512.2M-6.4%4.8M2.55
    15 October 202513.1M-3.5%5.6M2.32
    30 September 202513.5M+10.8%4.5M2.98
    15 September 202512.2M-5.9%5.1M2.39
    29 August 202513.0M+8.6%5.4M2.40
    15 August 202511.9M+0.9%5.7M2.10
    31 July 202511.8M+0.1%4.2M2.81
    15 July 202511.8M-5.0%4.8M2.48
    30 June 202512.4M+3.5%7.0M1.77
    13 June 202512.0M+10.0%4.5M2.67
    30 May 202510.9M+3.3%2.9M3.83
    15 May 202510.6M-1.0%4.8M2.20
    30 April 202510.7M+11.3%2.7M4.02
    15 April 20259.6M+1.1%4.6M2.08
    31 March 20259.5M-2.5%3.6M2.64
    14 March 20259.7M+1.1%6.4M1.53
    28 February 20259.6M+10.3%5.9M1.64
    14 February 20258.7M-8.7%2.7M3.23
    31 January 20259.6M+12.9%3.1M3.03
    15 January 20258.5M+0.5%2.7M3.16
    31 December 20248.4M-12.0%2.9M2.89
    13 December 20249.6M+3.1%4.6M2.06
    29 November 20249.3M-5.7%4.0M2.30
    15 November 20249.8M-9.1%5.3M1.86
    31 October 202410.8M-1.0%2.4M4.58
    15 October 202410.9M-0.9%2.4M4.51
    30 September 202411.0M-3.4%2.4M4.56
    13 September 202411.4M+2.4%3.1M3.64
    30 August 202411.1M+7.2%2.1M5.37
    15 August 202410.4M+6.8%2.4M4.41
    31 July 20249.7M-4.0%2.3M4.25
    15 July 202410.1M-1.8%1.8M5.65
    28 June 202410.3M+1.2%2.1M4.83
    14 June 202410.2M-0.5%1.4M7.32
    31 May 202410.2M+3.6%1.7M6.15
    15 May 20249.9M+12.0%2.5M3.93
    30 April 20248.8M-4.2%1.9M4.64
    15 April 20249.2M+1.1%1.4M6.67
    28 March 20249.1M+2.8%1.7M5.43
    15 March 20248.9M-3.2%2.3M3.93
    29 February 20249.1M+13.3%6.0M1.52
    15 February 20248.1M+3.1%3.4M2.34
    31 January 20247.8M-1.4%2.6M3.05
    12 January 20247.9M-1.7%3.0M2.63
    29 December 20238.1M-14.3%3.1M2.58
    15 December 20239.4M+6.2%3.8M2.49
    30 November 20238.9M+4.1%3.1M2.87
    15 November 20238.5M+14.6%2.4M3.54
    31 October 20237.4M+0.9%1.1M7.04
    13 October 20237.4M+6.0%2.2M3.40
    29 September 20237.0M+1.9%1.9M3.58
    15 September 20236.8M+15.3%2.5M2.74
    31 August 20235.9M-2.9%3.4M1.73
    15 August 20236.1M+6.4%8.2M1.00
    31 July 20235.7M-11.2%3.1M1.87
    14 July 20236.5M+26.1%5.4M1.20
    30 June 20235.1M+44.0%4.2M1.22
    15 June 20233.6M+14.5%925K3.84
    31 May 20233.1M+2.0%226K13.74
    15 May 20233.0M+1.4%255K11.94
    28 April 20233.0M-2.8%136K22.07
    14 April 20233.1M+0.2%98K31.58
    31 March 20233.1M-1.5%242K12.75
    15 March 20233.1M-1.8%126K24.91
    28 February 20233.2M+0.8%280K11.37
    15 February 20233.2M-2.0%195K16.25
    31 January 20233.2M-3.0%117K27.52
    13 January 20233.3M-0.4%154K21.68
    30 December 20223.3M-0.9%196K17.08
    15 December 20223.4M+2.2%134K25.18
    30 November 20223.3M-0.4%135K24.41
    15 November 20223.3M-4.2%235K14.14
    31 October 20223.5M+0.1%213K16.26
    14 October 20223.5M-2.7%295K11.72
    30 September 20223.6M-12.5%8.2M1.00
    15 September 20224.1M-0.2%395K10.29
    31 August 20224.1M-1.1%238K17.10
    15 August 20224.1M-0.7%360K11.44
    29 July 20224.1M-0.9%166K25.06
    15 July 20224.2M+0.6%160K26.11
    30 June 20224.2M+1.4%267K15.57
    15 June 20224.1M+2.0%254K16.14
    31 May 20224.0M+0.3%155K26.00
    13 May 20224.0M+3.3%272K14.76
    29 April 20223.9M+2.0%274K14.17
    14 April 20223.8M-6.3%217K17.58
    31 March 20224.1M-1.6%271K14.99
    15 March 20224.1M+2.1%282K14.65
    28 February 20224.0M+5.7%734K5.51
    15 February 20223.8M+7.7%355K10.78
    31 January 20223.6M-9.2%419K8.48
    14 January 20223.9M+3.1%642K6.10
    31 December 20213.8M+9.4%503K7.54
    15 December 20213.5M+1.5%462K7.50
    30 November 20213.4M-1.5%546K6.25
    15 November 20213.5M-22.9%1.8M1.88
    29 October 20214.5M-0.0%321K13.98
    15 October 20214.5M-1.6%304K14.79
    30 September 20214.6M+1.9%326K14.03
    15 September 20214.5M-0.4%393K11.43
    31 August 20214.5M+14.0%424K10.62
    13 August 20214.0M-1.8%711K5.56
    30 July 20214.0M+4.2%425K9.47
    15 July 20213.9M-1.4%430K8.99
    30 June 20213.9M-13.9%815K4.81
    15 June 20214.5M+6.2%472K9.63
    28 May 20214.3M+1.3%460K9.31
    14 May 20214.2M+10.6%750K5.63
    30 April 20213.8M-10.2%411K9.30
    15 April 20214.3M-6.3%479K8.89
    31 March 20214.5M+11.4%592K7.68
    15 March 20214.1M+11.2%889K4.59
    26 February 20213.7M+6.1%532K6.89
    12 February 20213.5M-3.2%513K6.74
    29 January 20213.6M-6.5%1.0M3.45
    15 January 20213.8M-6.5%846K4.52
    31 December 20204.1M-5.4%615K6.64
    15 December 20204.3M-3.3%531K8.13
    30 November 20204.5M+3.8%757K5.89
    13 November 20204.3M+1.4%875K4.91
    30 October 20204.2M-3.9%375K11.30
    15 October 20204.4M-2.0%311K14.17
    30 September 20204.5M-3.2%488K9.21
    15 September 20204.6M+3.9%696K6.68
    31 August 20204.5M-10.3%736K6.07
    14 August 20205.0M-8.9%1.7M2.89
    31 July 20205.5M+1.5%1.1M4.96
    15 July 20205.4M+1.8%851K6.32
    30 June 20205.3M-2.2%572K9.25
    15 June 20205.4M-2.5%590K9.17
    29 May 20205.5M-15.5%542K10.23
    15 May 20206.6M-7.6%870K7.55
    30 April 20207.1M+0.0%599K11.87
    15 April 20207.1M-3.1%495K14.37
    31 March 20207.3M-8.2%897K8.18
    13 March 20208.0M+7.6%758K10.54
    28 February 20207.4M-0.7%940K7.89
    14 February 20207.5M+6.6%686K10.89
    31 January 20207.0M-6.1%884K7.93
    15 January 20207.5M+3.5%656K11.38
    31 December 20197.2M-6.5%454K15.90
    13 December 20197.7M-3.2%449K17.17
    29 November 20198.0M-2.0%473K16.84
    15 November 20198.1M+10.6%1.4M5.91
    31 October 20197.4M-7.6%500K14.71
    15 October 20198.0M+3.7%342K23.29
    30 September 20197.7M-0.8%439K17.48
    13 September 20197.7M-1.4%652K11.87
    30 August 20197.8M-1.4%430K18.25
    15 August 20198.0M+1.9%750K10.61
    31 July 20197.8M-2.9%566K13.79
    15 July 20198.0M+0.5%726K11.07
    28 June 20198.0M-0.6%803K9.96
    14 June 20198.0M-3.3%425K18.93
    31 May 20198.3M+4.7%573K14.52
    15 May 20198.0M+1.2%869K9.15
    30 April 20197.9M-3.2%453K17.36
    15 April 20198.1M+0.2%678K11.98
    29 March 20198.1M-0.9%644K12.60
    15 March 20198.2M+19.2%1.3M6.53
    28 February 20196.9M+6.5%2.2M3.07
    15 February 20196.4M+16.1%813K7.93
    31 January 20195.6M+0.5%579K9.59
    15 January 20195.5M-13.0%491K11.24
    31 December 20186.4M-12.9%1.0M6.14
    14 December 20187.3M+4.4%658K11.08
    30 November 20187.0M-4.1%512K13.65
    15 November 20187.3M+0.9%1.6M4.49
    31 October 20187.2M-10.0%862K8.38
    15 October 20188.0M-3.0%1.3M5.98
    28 September 20188.3M+15.7%1.9M4.46
    14 September 20187.1M+5.1%1.4M5.05
    31 August 20186.8M-26.3%753K9.02
    15 August 20189.2M-15.8%1.7M5.34
    31 July 201810.9M-4.0%1.3M8.69
    13 July 201811.4M-1.6%1.2M9.68
    29 June 201811.6M-12.1%947K12.23
    15 June 201813.2M-12.7%1.7M7.89
    31 May 201815.1M+3.8%1.3M11.75
    15 May 201814.5M-7.2%1.4M10.42
    30 April 201815.7M+8.0%1.5M10.39
    13 April 201814.5M-0.2%1.2M11.78
    29 March 201814.5M+10.6%1.1M13.41
    15 March 201813.2M+12.5%1.7M7.86
    28 February 201811.7M-0.4%2.6M4.51
    15 February 201811.7M-5.3%1.3M9.11
    31 January 201812.4M+13.1%1.2M10.03
    12 January 201811.0M+0.7%1.2M9.19
    29 December 201710.9M1.1M9.93
    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.