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Ardelyx, Inc. short interest

30.2M shares of Ardelyx were sold short at the 15 October 2026 settlement, the most since 31 Mar 2025. Short sellers would need 6.5 days of normal trading to buy them back.

Shares sold short30.2Mat 15 Oct 2026
Change on the settlement before+9.3%+58% over a year
Days to cover6.48at 4.7M shares a day
Of shares in issue12.14%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 31 Mar 2025, and the share price moved -40% 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 202630.2M+9.3%4.7M6.48
    30 September 202627.7M+8.1%4.2M6.60
    15 September 202625.6M+12.7%4.0M6.34
    31 August 202622.7M+1.3%3.7M6.14
    14 August 202622.4M-14.5%6.8M3.32
    31 July 202626.2M-0.0%2.4M11.00
    15 July 202626.2M+3.5%3.3M8.06
    30 June 202625.4M-5.8%6.3M4.04
    15 June 202626.9M+8.7%3.1M8.58
    29 May 202624.8M+3.9%2.6M9.67
    15 May 202623.9M+1.2%5.2M4.55
    30 April 202623.6M-1.9%3.2M7.30
    15 April 202624.0M-1.8%3.1M7.68
    31 March 202624.5M+12.7%3.6M6.81
    13 March 202621.7M-0.8%2.9M7.49
    27 February 202621.9M+6.6%5.3M4.09
    13 February 202620.5M+10.6%3.1M6.68
    30 January 202618.6M-15.0%5.0M3.74
    15 January 202621.8M-11.0%8.1M2.70
    31 December 202524.5M+18.8%2.8M8.84
    15 December 202520.7M+2.8%2.8M7.45
    28 November 202520.1M+8.3%2.7M7.57
    14 November 202518.6M-8.2%3.6M5.12
    31 October 202520.2M+5.8%4.6M4.44
    15 October 202519.1M-1.9%3.5M5.50
    30 September 202519.5M-1.4%3.1M6.18
    15 September 202519.8M-7.9%3.3M6.05
    29 August 202521.5M-9.3%3.2M6.65
    15 August 202523.6M-9.9%5.5M4.31
    31 July 202526.2M-4.9%3.1M8.41
    15 July 202527.6M-0.5%5.4M5.14
    30 June 202527.7M+1.6%3.7M7.53
    13 June 202527.3M-6.1%5.5M4.96
    30 May 202529.0M+4.6%4.6M6.27
    15 May 202527.8M-6.9%8.0M3.48
    30 April 202529.8M-1.2%4.5M6.59
    15 April 202530.2M-1.5%6.0M4.99
    31 March 202530.6M+0.9%4.8M6.33
    14 March 202530.4M+1.8%2.9M10.52
    28 February 202529.8M+6.9%4.4M6.79
    14 February 202527.9M+4.8%2.9M9.73
    31 January 202526.6M+12.7%4.6M5.84
    15 January 202523.6M-2.7%5.3M4.43
    31 December 202424.3M+1.9%5.1M4.79
    13 December 202423.8M-2.0%3.2M7.38
    29 November 202424.3M+4.3%4.0M6.12
    15 November 202423.3M-3.1%7.4M3.13
    31 October 202424.1M+5.1%2.8M8.48
    15 October 202422.9M-0.7%3.1M7.32
    30 September 202423.1M-11.1%3.1M7.32
    13 September 202425.9M+4.3%2.5M10.26
    30 August 202424.9M-4.3%2.6M9.45
    15 August 202426.0M-2.2%4.7M5.54
    31 July 202426.6M-3.7%3.9M6.82
    15 July 202427.6M-4.3%6.5M4.21
    28 June 202428.8M-7.3%4.9M5.89
    14 June 202431.1M+0.5%3.5M9.01
    31 May 202430.9M-6.4%3.6M8.57
    15 May 202433.0M-6.1%7.1M4.66
    30 April 202435.2M+3.7%4.6M7.57
    15 April 202433.9M-3.1%5.7M5.94
    28 March 202435.0M-3.5%5.1M6.86
    15 March 202436.3M+8.0%6.0M6.05
    29 February 202433.6M+11.8%6.4M5.28
    15 February 202430.1M+6.7%5.1M5.93
    31 January 202428.2M-3.0%5.4M5.18
    12 January 202429.0M-12.0%10.1M2.87
    29 December 202333.0M+0.1%6.4M5.11
    15 December 202332.9M-8.7%6.3M5.22
    30 November 202336.1M-5.4%3.8M9.52
    15 November 202338.1M+4.5%4.7M8.12
    31 October 202336.5M+50.1%11.7M3.13
    13 October 202324.3M+9.6%5.6M4.37
    29 September 202322.2M-9.6%5.4M4.12
    15 September 202324.5M-4.9%7.8M3.16
    31 August 202325.8M-7.2%5.1M5.05
    15 August 202327.8M+0.2%4.6M6.02
    31 July 202327.7M+4.3%2.9M9.43
    14 July 202326.6M+1.6%3.1M8.56
    30 June 202326.1M+42.0%8.6M3.05
    15 June 202318.4M+7.3%3.9M4.69
    31 May 202317.1M+2.7%6.7M2.57
    15 May 202316.7M-8.5%5.3M3.15
    28 April 202318.2M-4.0%4.5M4.03
    14 April 202319.0M+7.2%5.0M3.79
    31 March 202317.7M+36.5%9.3M1.91
    15 March 202313.0M+18.1%12.5M1.04
    28 February 202311.0M+8.7%4.4M2.48
    15 February 202310.1M-4.4%4.8M2.13
    31 January 202310.6M-9.5%7.2M1.47
    13 January 202311.7M-5.5%6.6M1.78
    30 December 202212.4M+17.6%11.4M1.08
    15 December 202210.5M-15.2%5.5M1.91
    30 November 202212.4M+44.5%28.9M1.00
    15 November 20228.6M+17.0%7.5M1.14
    31 October 20227.3M-7.6%2.5M2.96
    14 October 20227.9M+2.1%3.1M2.56
    30 September 20227.8M+12.9%2.5M3.17
    15 September 20226.9M-14.9%7.0M1.00
    31 August 20228.1M-4.1%3.5M2.33
    15 August 20228.4M-22.4%2.2M3.86
    29 July 202210.9M+0.4%1.0M10.75
    15 July 202210.8M+3.5%2.1M5.18
    30 June 202210.5M-13.9%5.0M2.11
    15 June 202212.2M-6.2%2.4M4.98
    31 May 202213.0M+11.1%1.7M7.65
    13 May 202211.7M+1.0%2.6M4.52
    29 April 202211.5M+19.9%6.6M1.76
    14 April 20229.6M-1.4%3.5M2.71
    31 March 20229.8M+3.7%3.0M3.21
    15 March 20229.4M+9.8%3.8M2.45
    28 February 20228.6M+1.0%1.9M4.56
    15 February 20228.5M+16.0%2.7M3.18
    31 January 20227.3M-7.1%2.9M2.56
    14 January 20227.9M-1.8%4.0M1.99
    31 December 20218.0M-34.5%8.3M1.00
    15 December 202112.2M+93.0%75.6M1.00
    30 November 20216.3M+7.6%7.0M1.00
    15 November 20215.9M-23.4%3.1M1.88
    29 October 20217.7M+18.6%3.4M2.25
    15 October 20216.5M-2.1%4.4M1.48
    30 September 20216.6M-16.0%2.6M2.59
    15 September 20217.9M-8.7%3.8M2.08
    31 August 20218.6M-15.5%4.2M2.06
    13 August 202110.2M-3.4%10.7M1.00
    30 July 202110.6M+7.2%39.5M1.00
    15 July 20219.9M+8.1%1.3M7.43
    30 June 20219.1M+21.0%2.1M4.25
    15 June 20217.6M-10.0%1.2M6.25
    28 May 20218.4M-10.1%1.2M7.27
    14 May 20219.3M+5.1%1.8M5.31
    30 April 20218.9M-11.4%2.9M3.04
    15 April 202110.0M+13.1%1.8M5.57
    31 March 20218.9M+54.4%1.4M6.40
    15 March 20215.7M+23.6%878K6.54
    26 February 20214.6M-4.1%702K6.61
    12 February 20214.8M+4.4%495K9.77
    29 January 20214.6M+2.3%832K5.57
    15 January 20214.5M-5.3%629K7.20
    31 December 20204.8M-4.0%795K6.01
    15 December 20205.0M-14.6%813K6.13
    30 November 20205.8M+13.2%350K16.66
    13 November 20205.2M-9.4%418K12.34
    30 October 20205.7M+12.8%354K16.09
    15 October 20205.0M-8.1%296K17.04
    30 September 20205.5M-7.3%741K7.41
    15 September 20205.9M-6.5%461K12.86
    31 August 20206.3M-2.5%297K21.35
    14 August 20206.5M+9.4%479K13.58
    31 July 20205.9M-3.5%403K14.74
    15 July 20206.2M+13.1%547K11.26
    30 June 20205.4M+69.0%1.1M4.96
    15 June 20203.2M+10.4%573K5.63
    29 May 20202.9M+4.2%601K4.86
    15 May 20202.8M+0.2%621K4.51
    30 April 20202.8M-5.6%639K4.37
    15 April 20203.0M-2.5%552K5.36
    31 March 20203.0M-13.6%921K3.30
    13 March 20203.5M+9.6%802K4.38
    28 February 20203.2M+14.4%1.1M2.97
    14 February 20202.8M+10.3%750K3.74
    31 January 20202.5M+7.0%527K4.83
    15 January 20202.4M-39.7%662K3.59
    31 December 20193.9M+42.9%1.1M3.47
    13 December 20192.8M+114.6%1.8M1.50
    29 November 20191.3M-8.5%965K1.33
    15 November 20191.4M-19.1%452K3.11
    31 October 20191.7M+10.2%385K4.51
    15 October 20191.6M+10.7%431K3.65
    30 September 20191.4M+45.5%922K1.54
    13 September 2019978K+94.0%5.0M1.00
    30 August 2019504K+29.3%670K1.00
    15 August 2019390K-6.0%88K4.43
    31 July 2019415K-9.0%96K4.34
    15 July 2019456K-20.2%77K5.93
    28 June 2019571K+0.3%242K2.36
    14 June 2019569K-3.1%90K6.36
    31 May 2019588K-4.7%125K4.71
    15 May 2019617K-3.8%112K5.49
    30 April 2019641K+4.6%202K3.17
    15 April 2019613K+0.3%283K2.17
    29 March 2019611K-17.9%153K3.98
    15 March 2019744K+6.1%248K3.00
    28 February 2019701K-7.3%155K4.53
    15 February 2019757K-6.1%176K4.29
    31 January 2019806K+1.6%189K4.25
    15 January 2019793K+16.5%297K2.67
    31 December 2018681K-17.7%731K1.00
    14 December 2018828K+4.1%306K2.70
    30 November 2018795K+16.6%166K4.79
    15 November 2018682K+18.6%311K2.20
    31 October 2018575K-5.0%327K1.76
    15 October 2018605K-20.5%256K2.37
    28 September 2018762K+39.2%363K2.10
    14 September 2018547K-1.7%385K1.42
    31 August 2018557K-13.0%341K1.63
    15 August 2018640K+1.0%314K2.04
    31 July 2018633K+14.6%336K1.89
    13 July 2018553K-16.1%538K1.03
    29 June 2018658K+79.9%688K1.00
    15 June 2018366K-36.9%755K1.00
    31 May 2018580K-55.8%1.7M1.00
    15 May 20181.3M-1.9%250K5.24
    30 April 20181.3M-5.4%358K3.74
    13 April 20181.4M-15.3%336K4.21
    29 March 20181.7M-5.2%314K5.31
    15 March 20181.8M-4.2%230K7.64
    28 February 20181.8M+9.6%317K5.80
    15 February 20181.7M+13.2%387K4.33
    31 January 20181.5M-12.6%250K5.93
    12 January 20181.7M-10.1%280K6.05
    29 December 20171.9M333K5.65
    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.