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Regeneron Pharmaceuticals, Inc. short interest

2.1M shares of Regeneron Pharmaceuticals were sold short at the 15 October 2026 settlement, the fewest since 13 Feb 2026. Short sellers would need 3.2 days of normal trading to buy them back.

Shares sold short2.1Mat 15 Oct 2026
Change on the settlement before-0.7%-27% over a year
Days to cover3.18at 671K shares a day
Of shares in issuen/a
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 fewest since 13 Feb 2026, and the share price moved +57% 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 20262.1M-0.7%671K3.18
    30 September 20262.2M-14.9%864K2.49
    15 September 20262.5M-1.0%571K4.42
    31 August 20262.6M+6.5%663K3.85
    14 August 20262.4M-29.2%761K3.15
    31 July 20263.4M-3.3%859K3.94
    15 July 20263.5M+0.2%741K4.72
    30 June 20263.5M+5.8%1.2M2.91
    15 June 20263.3M+10.1%969K3.41
    29 May 20263.0M+8.0%1.5M1.96
    15 May 20262.8M-15.0%764K3.64
    30 April 20263.3M+15.1%805K4.06
    15 April 20262.8M+11.5%652K4.36
    31 March 20262.5M+3.9%604K4.22
    13 March 20262.5M+7.2%587K4.18
    27 February 20262.3M+11.4%606K3.77
    13 February 20262.1M-5.7%824K2.49
    30 January 20262.2M-4.9%930K2.34
    15 January 20262.3M-7.8%894K2.56
    31 December 20252.5M-9.3%753K3.30
    15 December 20252.7M-13.0%975K2.81
    28 November 20253.1M+10.7%1.3M2.44
    14 November 20252.8M+1.8%961K2.96
    31 October 20252.8M-4.6%1.0M2.75
    15 October 20252.9M+6.0%1.2M2.46
    30 September 20252.8M-7.5%1.2M2.36
    15 September 20253.0M+5.6%961K3.11
    29 August 20252.8M+20.4%959K2.95
    15 August 20252.3M+2.5%1.1M2.21
    31 July 20252.3M+10.5%920K2.49
    15 July 20252.1M-7.9%843K2.46
    30 June 20252.3M+10.9%1.1M1.97
    13 June 20252.0M-24.7%1.6M1.27
    30 May 20252.7M-3.6%1.4M1.91
    15 May 20252.8M-3.1%1.5M1.85
    30 April 20252.9M+11.0%1.2M2.41
    15 April 20252.6M-6.8%1.2M2.13
    31 March 20252.8M-14.1%949K2.94
    14 March 20253.2M+26.6%1.0M3.15
    28 February 20252.6M+16.4%779K3.29
    14 February 20252.2M+0.8%1.1M2.06
    31 January 20252.2M+3.3%913K2.40
    15 January 20252.1M+1.0%835K2.54
    31 December 20242.1M+11.5%853K2.46
    13 December 20241.9M+4.5%850K2.21
    29 November 20241.8M+0.7%838K2.15
    15 November 20241.8M-3.6%817K2.19
    31 October 20241.9M+8.0%853K2.17
    15 October 20241.7M-0.9%635K2.70
    30 September 20241.7M-12.4%747K2.32
    13 September 20242.0M-5.9%473K4.18
    30 August 20242.1M-0.5%374K5.61
    15 August 20242.1M+5.0%558K3.78
    31 July 20242.0M+6.2%389K5.16
    15 July 20241.9M-7.1%373K5.07
    28 June 20242.0M+9.9%607K3.36
    14 June 20241.9M+6.2%370K5.01
    31 May 20241.7M+7.3%383K4.56
    15 May 20241.6M+3.5%459K3.54
    30 April 20241.6M+13.5%464K3.39
    15 April 20241.4M-2.4%442K3.14
    28 March 20241.4M+2.1%381K3.73
    15 March 20241.4M+2.6%450K3.10
    29 February 20241.4M-1.0%483K2.81
    15 February 20241.4M+9.6%521K2.63
    31 January 20241.3M+17.1%522K2.39
    12 January 20241.1M+0.5%597K1.79
    29 December 20231.1M-13.3%634K1.68
    15 December 20231.2M-0.2%622K1.97
    30 November 20231.2M-12.3%430K2.85
    15 November 20231.4M+6.9%604K2.32
    31 October 20231.3M-4.4%414K3.16
    13 October 20231.4M+16.5%365K3.75
    29 September 20231.2M-19.2%381K3.09
    15 September 20231.5M-1.9%419K3.48
    31 August 20231.5M+9.0%527K2.81
    15 August 20231.4M+1.2%486K2.80
    31 July 20231.3M+5.9%676K1.99
    14 July 20231.3M+17.0%611K2.08
    30 June 20231.1M-11.8%921K1.18
    15 June 20231.2M+7.7%484K2.54
    31 May 20231.1M-5.9%551K2.07
    15 May 20231.2M+2.9%575K2.11
    28 April 20231.2M-2.9%482K2.45
    14 April 20231.2M-6.7%436K2.78
    31 March 20231.3M+7.2%776K1.68
    15 March 20231.2M+1.3%552K2.20
    28 February 20231.2M-10.5%509K2.35
    15 February 20231.3M-8.2%736K1.82
    31 January 20231.5M+3.6%557K2.62
    13 January 20231.4M-6.3%679K2.07
    30 December 20221.5M+4.3%590K2.55
    15 December 20221.4M-7.2%584K2.46
    30 November 20221.6M-11.9%589K2.63
    15 November 20221.8M-0.4%763K2.31
    31 October 20221.8M-16.2%695K2.54
    14 October 20222.1M-7.4%761K2.77
    30 September 20222.3M-3.8%781K2.91
    15 September 20222.4M-18.5%1.2M1.99
    31 August 20222.9M-0.8%465K6.25
    15 August 20222.9M-4.5%608K4.82
    29 July 20223.1M+7.4%529K5.80
    15 July 20222.9M+3.2%489K5.85
    30 June 20222.8M+7.5%775K3.57
    15 June 20222.6M+23.0%802K3.21
    31 May 20222.1M-3.9%642K3.26
    13 May 20222.2M+1.1%738K2.96
    29 April 20222.2M+0.3%497K4.34
    14 April 20222.1M-2.2%677K3.17
    31 March 20222.2M-8.2%721K3.05
    15 March 20222.4M+7.0%635K3.77
    28 February 20222.2M+4.7%562K3.98
    15 February 20222.1M+19.4%889K2.40
    31 January 20221.8M-1.4%890K2.01
    14 January 20221.8M+10.9%700K2.59
    31 December 20211.6M+6.9%708K2.31
    15 December 20211.5M+3.8%738K2.07
    30 November 20211.5M-8.1%654K2.26
    15 November 20211.6M-14.6%853K1.88
    29 October 20211.9M+6.7%822K2.29
    15 October 20211.8M-2.2%827K2.13
    30 September 20211.8M+14.5%664K2.71
    15 September 20211.6M+15.4%727K2.16
    31 August 20211.4M-3.7%929K1.47
    13 August 20211.4M-11.4%825K1.71
    30 July 20211.6M-13.4%519K3.07
    15 July 20211.8M+30.3%723K2.54
    30 June 20211.4M-26.4%945K1.50
    15 June 20211.9M-9.1%700K2.74
    28 May 20212.1M-5.4%613K3.45
    14 May 20212.2M-4.5%826K2.70
    30 April 20212.3M-14.9%698K3.35
    15 April 20212.7M+24.4%742K3.70
    31 March 20212.2M-16.9%937K2.36
    15 March 20212.7M+14.5%790K3.36
    26 February 20212.3M+9.9%1.1M2.12
    12 February 20212.1M+8.8%1.0M2.08
    29 January 20211.9M-18.9%844K2.30
    15 January 20212.4M+6.5%980K2.44
    31 December 20202.2M+14.5%737K3.05
    15 December 20202.0M-8.0%898K2.19
    30 November 20202.1M+6.0%905K2.36
    13 November 20202.0M-7.1%755K2.67
    30 October 20202.2M-7.1%603K3.59
    15 October 20202.3M+13.7%1.5M1.55
    30 September 20202.1M+28.2%678K3.03
    15 September 20201.6M+0.7%717K2.23
    31 August 20201.6M-0.9%557K2.85
    14 August 20201.6M-15.3%559K2.87
    31 July 20201.9M-4.9%588K3.21
    15 July 20202.0M-6.4%841K2.36
    30 June 20202.1M-14.1%1.0M2.03
    15 June 20202.5M+24.3%1.1M2.22
    29 May 20202.0M+11.7%2.4M1.00
    15 May 20201.8M-4.9%940K1.89
    30 April 20201.9M-6.9%1.1M1.78
    15 April 20202.0M+13.2%1.0M1.98
    31 March 20201.8M-30.6%1.8M1.00
    13 March 20202.6M-11.0%1.3M1.98
    28 February 20202.9M+8.6%1.6M1.75
    14 February 20202.6M-8.3%969K2.73
    31 January 20202.9M+10.1%801K3.61
    15 January 20202.6M+5.8%557K4.71
    31 December 20192.5M+0.7%584K4.25
    13 December 20192.5M+4.4%717K3.43
    29 November 20192.4M+5.9%802K2.94
    15 November 20192.2M+5.3%1.0M2.15
    31 October 20192.1M-0.8%566K3.74
    15 October 20192.1M-6.0%790K2.70
    30 September 20192.3M-2.3%705K3.22
    13 September 20192.3M-0.2%668K3.48
    30 August 20192.3M-3.9%632K3.69
    15 August 20192.4M+3.0%697K3.48
    31 July 20192.4M-7.4%721K3.26
    15 July 20192.5M+10.8%898K2.83
    28 June 20192.3M+7.9%1.0M2.25
    14 June 20192.1M-4.3%715K2.97
    31 May 20192.2M-11.7%815K2.73
    15 May 20192.5M-5.2%1.0M2.45
    30 April 20192.7M+13.1%1.1M2.51
    15 April 20192.3M+12.2%704K3.34
    29 March 20192.1M+9.7%557K3.76
    15 March 20191.9M+3.3%861K2.21
    28 February 20191.8M+5.2%499K3.70
    15 February 20191.8M+2.7%654K2.69
    31 January 20191.7M-5.8%818K2.09
    15 January 20191.8M-8.5%797K2.28
    31 December 20182.0M-14.3%802K2.47
    14 December 20182.3M+10.3%819K2.82
    30 November 20182.1M-8.0%600K3.50
    15 November 20182.3M-12.8%759K3.01
    31 October 20182.6M+0.5%963K2.72
    15 October 20182.6M-0.7%587K4.43
    28 September 20182.6M-12.4%648K4.04
    14 September 20183.0M-3.8%508K5.89
    31 August 20183.1M+5.6%656K4.74
    15 August 20182.9M+5.1%893K3.29
    31 July 20182.8M-0.2%763K3.67
    13 July 20182.8M-0.3%777K3.61
    29 June 20182.8M+0.1%962K2.93
    15 June 20182.8M+7.2%728K3.86
    31 May 20182.6M-8.0%730K3.59
    15 May 20182.8M+6.4%1.2M2.38
    30 April 20182.7M-13.0%895K2.99
    13 April 20183.1M+2.7%820K3.75
    29 March 20183.0M+10.0%849K3.53
    15 March 20182.7M+14.9%793K3.43
    28 February 20182.4M+6.6%853K2.78
    15 February 20182.2M+14.7%1.6M1.38
    31 January 20181.9M-9.6%847K2.29
    12 January 20182.1M+16.1%783K2.74
    29 December 20171.8M498K3.71
    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.