greeksoup/ stock research
Stock research / United States / AMBA / Short interest

Ambarella Inc. short interest

4.7M shares of Ambarella were sold short at the 15 October 2026 settlement, near the top of its range over the last year (1.7M to 5.7M). Short sellers would need 4.3 days of normal trading to buy them back.

Shares sold short4.7Mat 15 Oct 2026
Change on the settlement before-8.4%+156% over a year
Days to cover4.32at 1.1M shares a day
Of shares in issue10.69%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 (1.7M to 5.7M), and the share price moved -19% 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 20264.7M-8.4%1.1M4.32
    30 September 20265.2M-9.7%1.5M3.52
    15 September 20265.7M+30.8%2.5M2.25
    31 August 20264.4M+7.2%943K4.63
    14 August 20264.1M-21.0%1.2M3.42
    31 July 20265.2M+30.7%2.4M2.16
    15 July 20263.9M+19.7%1.7M2.27
    30 June 20263.3M+14.8%1.8M1.79
    15 June 20262.9M+29.5%1.6M1.76
    29 May 20262.2M-7.9%2.0M1.10
    15 May 20262.4M-8.3%969K2.49
    30 April 20262.6M+2.7%744K3.53
    15 April 20262.6M+21.9%690K3.71
    31 March 20262.1M-6.4%836K2.51
    13 March 20262.2M+13.0%843K2.66
    27 February 20262.0M-2.0%1.1M1.84
    13 February 20262.0M-11.0%716K2.82
    30 January 20262.3M-2.4%720K3.16
    15 January 20262.3M+5.7%1.4M1.63
    31 December 20252.2M-7.6%582K3.78
    15 December 20252.4M-14.4%1.0M2.34
    28 November 20252.8M+44.4%1.4M2.05
    14 November 20251.9M+12.9%782K2.47
    31 October 20251.7M-7.2%380K4.50
    15 October 20251.8M-8.0%578K3.19
    30 September 20252.0M+1.5%836K2.39
    15 September 20252.0M-4.8%833K2.37
    29 August 20252.1M-6.1%1.4M1.50
    15 August 20252.2M+1.6%484K4.56
    31 July 20252.2M+4.8%543K4.00
    15 July 20252.1M-3.7%634K3.27
    30 June 20252.2M+39.8%1.6M1.31
    13 June 20251.5M+4.3%985K1.56
    30 May 20251.5M+14.3%1.1M1.30
    15 May 20251.3M-4.8%555K2.32
    30 April 20251.4M+0.6%712K1.90
    15 April 20251.3M-17.5%837K1.61
    31 March 20251.6M+18.9%609K2.68
    14 March 20251.4M-29.4%1.2M1.14
    28 February 20251.9M+3.3%1.4M1.36
    14 February 20251.9M+21.3%476K3.96
    31 January 20251.6M+4.3%651K2.39
    15 January 20251.5M+6.0%772K1.93
    31 December 20241.4M-1.9%542K2.59
    13 December 20241.4M-6.7%742K1.93
    29 November 20241.5M+7.7%1.2M1.24
    15 November 20241.4M+5.9%340K4.19
    31 October 20241.3M-2.0%278K4.84
    15 October 20241.4M-9.1%400K3.43
    30 September 20241.5M-1.9%446K3.39
    13 September 20241.5M+2.6%546K2.82
    30 August 20241.5M-22.2%1.2M1.23
    15 August 20241.9M+6.3%577K3.34
    31 July 20241.8M+18.2%536K3.38
    15 July 20241.5M-34.8%577K2.66
    28 June 20242.4M+6.8%641K3.67
    14 June 20242.2M-6.6%639K3.45
    31 May 20242.4M-12.8%770K3.07
    15 May 20242.7M-5.8%523K5.18
    30 April 20242.9M+16.4%667K4.31
    15 April 20242.5M-0.2%490K5.05
    28 March 20242.5M-7.1%498K4.97
    15 March 20242.7M-10.6%576K4.63
    29 February 20243.0M-3.8%782K3.81
    15 February 20243.1M+12.3%481K6.43
    31 January 20242.8M+18.0%451K6.11
    12 January 20242.3M+58.7%548K4.26
    29 December 20231.5M+2.4%502K2.93
    15 December 20231.4M+39.5%793K1.81
    30 November 20231.0M-3.2%586K1.76
    15 November 20231.1M-2.7%416K2.56
    31 October 20231.1M-0.2%463K2.36
    13 October 20231.1M-0.7%310K3.53
    29 September 20231.1M-2.6%470K2.35
    15 September 20231.1M-15.4%654K1.73
    31 August 20231.3M+11.4%1.3M1.03
    15 August 20231.2M-10.4%352K3.42
    31 July 20231.3M+17.8%404K3.33
    14 July 20231.1M-6.5%286K3.99
    30 June 20231.2M-4.6%469K2.60
    15 June 20231.3M+1.4%706K1.81
    31 May 20231.3M-9.2%1.0M1.21
    15 May 20231.4M+15.3%344K4.03
    28 April 20231.2M-2.4%387K3.10
    14 April 20231.2M+9.3%435K2.83
    31 March 20231.1M+3.7%403K2.79
    15 March 20231.1M-5.3%721K1.50
    28 February 20231.1M+2.4%405K2.83
    15 February 20231.1M-4.9%428K2.61
    31 January 20231.2M-13.0%401K2.93
    13 January 20231.4M-11.0%514K2.63
    30 December 20221.5M+1.9%552K2.75
    15 December 20221.5M+28.2%853K1.75
    30 November 20221.2M+35.8%653K1.78
    15 November 2022857K-16.6%472K1.82
    31 October 20221.0M-5.9%451K2.28
    14 October 20221.1M-2.5%477K2.29
    30 September 20221.1M-12.6%493K2.27
    15 September 20221.3M-5.2%910K1.41
    31 August 20221.4M-12.4%827K1.63
    15 August 20221.5M+3.4%369K4.18
    29 July 20221.5M+1.4%566K2.64
    15 July 20221.5M-0.9%440K3.34
    30 June 20221.5M+6.5%537K2.77
    15 June 20221.4M-6.5%664K2.10
    31 May 20221.5M+1.0%623K2.39
    13 May 20221.5M+1.7%669K2.21
    29 April 20221.5M+12.0%438K3.32
    14 April 20221.3M-8.7%521K2.49
    31 March 20221.4M+13.8%752K1.89
    15 March 20221.2M+48.0%1.6M1.00
    28 February 2022843K-22.6%585K1.44
    15 February 20221.1M-9.2%479K2.27
    31 January 20221.2M+8.8%677K1.77
    14 January 20221.1M-8.6%1.1M1.00
    31 December 20211.2M-23.8%638K1.89
    15 December 20211.6M+27.6%1.2M1.28
    30 November 20211.2M-8.0%646K1.92
    15 November 20211.3M-15.0%601K2.24
    29 October 20211.6M+9.8%606K2.62
    15 October 20211.4M-3.6%622K2.32
    30 September 20211.5M-13.6%851K1.76
    15 September 20211.7M+26.1%1.5M1.14
    31 August 20211.4M+8.4%266K5.16
    13 August 20211.3M-12.0%208K6.11
    30 July 20211.4M+4.1%247K5.85
    15 July 20211.4M-3.5%255K5.44
    30 June 20211.4M-3.9%535K2.68
    15 June 20211.5M-8.4%515K2.90
    28 May 20211.6M+8.0%439K3.72
    14 May 20211.5M-3.9%429K3.52
    30 April 20211.6M-2.5%245K6.41
    15 April 20211.6M-12.9%300K5.38
    31 March 20211.9M-15.9%541K3.42
    15 March 20212.2M+9.0%989K2.23
    26 February 20212.0M-5.4%525K3.85
    12 February 20212.1M+1.0%613K3.48
    29 January 20212.1M-0.2%725K2.91
    15 January 20212.1M-0.3%794K2.67
    31 December 20202.1M-8.5%462K4.60
    15 December 20202.3M-35.8%1.1M2.12
    30 November 20203.6M+26.3%1.0M3.60
    13 November 20202.9M+6.4%291K9.86
    30 October 20202.7M+5.6%243K11.06
    15 October 20202.5M-1.2%361K7.06
    30 September 20202.6M-12.7%429K6.01
    15 September 20203.0M+4.6%1.1M2.72
    31 August 20202.8M+9.8%536K5.27
    14 August 20202.6M+3.3%238K10.80
    31 July 20202.5M-1.4%309K8.05
    15 July 20202.5M+3.0%333K7.57
    30 June 20202.5M+0.7%603K4.06
    15 June 20202.4M-5.3%808K3.01
    29 May 20202.6M+1.5%328K7.83
    15 May 20202.5M+25.3%272K9.33
    30 April 20202.0M+1.4%314K6.45
    15 April 20202.0M+4.6%388K5.13
    31 March 20201.9M-5.5%656K2.91
    13 March 20202.0M-20.7%985K2.05
    28 February 20202.5M-11.2%483K5.26
    14 February 20202.9M+2.6%535K5.35
    31 January 20202.8M-7.9%477K5.85
    15 January 20203.0M-0.4%561K5.40
    31 December 20193.0M+5.8%568K5.35
    13 December 20192.9M-9.7%622K4.62
    29 November 20193.2M-2.9%829K3.84
    15 November 20193.3M-18.4%568K5.77
    31 October 20194.0M+3.1%397K10.10
    15 October 20193.9M-3.5%1.2M3.34
    30 September 20194.0M-5.0%817K4.94
    13 September 20194.2M+1.4%1.1M3.75
    30 August 20194.2M+2.6%964K4.34
    15 August 20194.1M-4.4%312K13.07
    31 July 20194.3M-1.9%364K11.70
    15 July 20194.3M-3.3%346K12.55
    28 June 20194.5M-3.2%441K10.20
    14 June 20194.6M+0.8%1.0M4.57
    31 May 20194.6M-5.3%934K4.93
    15 May 20194.9M-2.9%427K11.41
    30 April 20195.0M-4.2%562K8.92
    15 April 20195.2M-1.6%340K15.40
    29 March 20195.3M-3.9%397K13.37
    15 March 20195.5M+3.4%986K5.61
    28 February 20195.3M-0.7%321K16.64
    15 February 20195.4M-0.6%335K16.07
    31 January 20195.4M+3.7%468K11.58
    15 January 20195.2M-2.4%607K8.61
    31 December 20185.4M-0.2%641K8.35
    14 December 20185.4M-6.2%824K6.52
    30 November 20185.7M-14.6%1.2M4.76
    15 November 20186.7M-3.3%331K20.28
    31 October 20186.9M-8.9%562K12.33
    15 October 20187.6M-7.7%789K9.64
    28 September 20188.2M+5.7%812K10.15
    14 September 20187.8M+15.1%1.2M6.38
    31 August 20186.8M-3.6%1.5M4.52
    15 August 20187.0M+0.1%591K11.90
    31 July 20187.0M+16.0%748K9.38
    13 July 20186.1M+6.6%806K7.51
    29 June 20185.7M-1.9%811K7.00
    15 June 20185.8M+20.7%2.5M2.35
    31 May 20184.8M-3.3%1.5M3.30
    15 May 20185.0M+2.1%590K8.39
    30 April 20184.9M+2.3%924K5.25
    13 April 20184.7M+2.9%1.2M4.06
    29 March 20184.6M-6.1%1.0M4.44
    15 March 20184.9M+16.2%1.2M4.13
    28 February 20184.2M-1.3%456K9.28
    15 February 20184.3M+2.0%652K6.57
    31 January 20184.2M-19.9%1.4M3.04
    12 January 20185.2M+5.5%1.4M3.67
    29 December 20175.0M735K6.76
    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.