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West Pharmaceutical Services Inc. short interest

2.0M shares of West Pharmaceutical Services were sold short at the 15 October 2026 settlement, the fewest since 15 Jan 2026. Short sellers would need 4.2 days of normal trading to buy them back.

Shares sold short2.0Mat 15 Oct 2026
Change on the settlement before-4.2%+33% over a year
Days to cover4.17at 483K shares a day
Of shares in issue2.88%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 fewest since 15 Jan 2026, and the share price moved +52% 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. Counts before a split are restated to today's shares, the way the price is.

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 20262.0M-4.2%483K4.17
    30 September 20262.1M-11.6%675K3.11
    15 September 20262.4M+8.3%527K4.51
    31 August 20262.2M+3.4%449K4.89
    14 August 20262.1M-15.4%516K4.11
    31 July 20262.5M+6.4%987K2.54
    15 July 20262.4M+1.9%660K3.58
    30 June 20262.3M+1.2%994K2.33
    15 June 20262.3M-1.6%650K3.52
    29 May 20262.3M+1.9%691K3.37
    15 May 20262.3M-5.9%869K2.63
    30 April 20262.4M-8.9%1.2M2.06
    15 April 20262.7M-9.0%738K3.61
    31 March 20262.9M+14.1%922K3.17
    13 March 20262.6M+8.0%871K2.94
    27 February 20262.4M+5.9%787K3.02
    13 February 20262.2M-12.5%1.4M1.66
    30 January 20262.6M+33.4%1.3M1.92
    15 January 20261.9M+8.2%719K2.67
    31 December 20251.8M-14.0%652K2.72
    15 December 20252.1M-0.1%678K3.04
    28 November 20252.1M+10.1%652K3.17
    14 November 20251.9M+30.8%712K2.63
    31 October 20251.4M-5.5%854K1.68
    15 October 20251.5M-9.4%574K2.64
    30 September 20251.7M-0.2%680K2.46
    15 September 20251.7M+9.3%613K2.74
    29 August 20251.5M-14.4%514K2.99
    15 August 20251.8M-17.2%551K3.26
    31 July 20252.2M+18.3%1.1M1.98
    15 July 20251.8M-14.6%522K3.51
    30 June 20252.1M+3.0%734K2.92
    13 June 20252.1M-2.5%649K3.21
    30 May 20252.1M-5.0%551K3.88
    15 May 20252.2M-10.7%636K3.54
    30 April 20252.5M+79.9%1.3M1.90
    15 April 20251.4M-2.0%946K1.48
    31 March 20251.4M-7.4%889K1.61
    14 March 20251.5M+12.5%1.0M1.54
    28 February 20251.4M+14.8%1.7M1.00
    14 February 20251.2M-11.2%1.4M1.00
    31 January 20251.3M-10.5%410K3.28
    15 January 20251.5M+0.5%461K3.26
    31 December 20241.5M+28.9%606K2.47
    13 December 20241.2M-0.4%366K3.17
    29 November 20241.2M-10.3%502K2.32
    15 November 20241.3M-9.4%657K1.97
    31 October 20241.4M-7.3%928K1.54
    15 October 20241.5M+7.0%638K2.42
    30 September 20241.4M-7.6%454K3.18
    13 September 20241.6M+2.2%344K4.54
    30 August 20241.5M+20.8%357K4.28
    15 August 20241.3M+7.1%600K2.11
    31 July 20241.2M-4.8%998K1.18
    15 July 20241.2M+0.8%440K2.82
    28 June 20241.2M+0.6%759K1.62
    14 June 20241.2M-4.5%511K2.39
    31 May 20241.3M+12.3%549K2.33
    15 May 20241.1M+9.0%555K2.05
    30 April 20241.0M+7.1%533K1.96
    15 April 2024976K-14.0%321K3.04
    28 March 20241.1M-6.2%360K3.15
    15 March 20241.2M+0.8%606K2.00
    29 February 20241.2M+17.9%635K1.89
    15 February 20241.0M-12.5%791K1.29
    31 January 20241.2M+8.7%425K2.74
    12 January 20241.1M-8.3%468K2.29
    29 December 20231.2M-1.5%309K3.78
    15 December 20231.2M-0.3%491K2.42
    30 November 20231.2M-7.2%400K2.98
    15 November 20231.3M+36.0%461K2.78
    31 October 2023942K-13.7%496K1.90
    13 October 20231.1M+27.4%282K3.87
    29 September 2023857K-3.2%271K3.17
    15 September 2023885K-3.5%305K2.90
    31 August 2023917K+7.8%330K2.78
    15 August 2023851K+37.9%382K2.23
    31 July 2023617K-15.7%447K1.38
    14 July 2023732K-14.8%249K2.94
    30 June 2023858K-13.6%429K2.00
    15 June 2023994K+15.8%356K2.79
    31 May 2023858K-0.6%441K1.94
    15 May 2023864K-27.3%374K2.31
    28 April 20231.2M-11.9%497K2.39
    14 April 20231.3M+0.4%369K3.65
    31 March 20231.3M-14.4%479K2.81
    15 March 20231.6M+2.2%512K3.07
    28 February 20231.5M-7.8%868K1.77
    15 February 20231.7M+24.3%651K2.56
    31 January 20231.3M+5.2%577K2.32
    13 January 20231.3M-6.9%590K2.16
    30 December 20221.4M+18.2%501K2.73
    15 December 20221.2M-19.5%648K1.79
    30 November 20221.4M+44.7%921K1.56
    15 November 2022994K+18.1%794K1.25
    31 October 2022841K+1.7%1.0M1.00
    14 October 2022827K-11.5%589K1.40
    30 September 2022935K+12.0%497K1.88
    15 September 2022835K+17.2%368K2.27
    31 August 2022712K-17.2%339K2.10
    15 August 2022861K-5.7%288K2.99
    29 July 2022912K-5.1%436K2.09
    15 July 2022961K+6.0%452K2.13
    30 June 2022907K+19.2%448K2.02
    15 June 2022761K+4.5%393K1.94
    31 May 2022728K-14.4%467K1.56
    13 May 2022851K-13.5%508K1.68
    29 April 2022983K-14.5%548K1.80
    14 April 20221.1M-4.1%331K3.47
    31 March 20221.2M-3.2%371K3.23
    15 March 20221.2M+20.5%346K3.58
    28 February 20221.0M+0.2%526K1.96
    15 February 20221.0M-13.5%342K3.01
    31 January 20221.2M+64.2%654K1.82
    14 January 2022724K-19.2%460K1.57
    31 December 2021896K-16.2%315K2.85
    15 December 20211.1M-4.4%372K2.87
    30 November 20211.1M-9.9%405K2.76
    15 November 20211.2M+36.1%442K2.80
    29 October 2021911K-7.9%385K2.37
    15 October 2021989K+13.1%341K2.90
    30 September 2021875K+11.1%330K2.65
    15 September 2021787K-13.8%331K2.38
    31 August 2021913K-13.5%300K3.05
    13 August 20211.1M+8.5%263K4.02
    30 July 2021973K+0.6%402K2.42
    15 July 2021967K-13.6%360K2.69
    30 June 20211.1M-0.7%341K3.28
    15 June 20211.1M+11.2%323K3.49
    28 May 20211.0M-0.5%419K2.42
    14 May 20211.0M+18.1%377K2.70
    30 April 2021863K+28.4%336K2.57
    15 April 2021672K-2.9%295K2.28
    31 March 2021692K+7.6%393K1.76
    15 March 2021644K+6.9%365K1.76
    26 February 2021602K-9.9%498K1.21
    12 February 2021668K-20.9%461K1.45
    29 January 2021845K+20.9%467K1.81
    15 January 2021699K+6.2%425K1.65
    31 December 2020658K+11.6%380K1.73
    15 December 2020590K+7.6%443K1.33
    30 November 2020549K-8.3%301K1.82
    13 November 2020598K-4.5%339K1.76
    30 October 2020627K-17.3%349K1.80
    15 October 2020758K+10.9%417K1.82
    30 September 2020684K-3.6%582K1.18
    15 September 2020709K-4.6%411K1.73
    31 August 2020744K+0.9%388K1.92
    14 August 2020737K+5.5%429K1.72
    31 July 2020698K-9.2%512K1.36
    15 July 2020769K-16.0%420K1.83
    30 June 2020916K+0.2%753K1.22
    15 June 2020914K+30.3%500K1.83
    29 May 2020701K-3.4%2.5M1.00
    15 May 2020726K-8.2%414K1.75
    30 April 2020791K+2.3%492K1.61
    15 April 2020773K-2.0%394K1.96
    31 March 2020789K-27.3%617K1.28
    13 March 20201.1M+8.3%565K1.92
    28 February 20201.0M-1.9%479K2.09
    14 February 20201.0M-0.4%311K3.29
    31 January 20201.0M+0.4%385K2.67
    15 January 20201.0M-23.5%426K2.40
    31 December 20191.3M+25.3%283K4.72
    13 December 20191.1M-13.7%353K3.02
    29 November 20191.2M+47.4%706K1.75
    15 November 2019839K+25.5%365K2.30
    31 October 2019668K+12.2%422K1.58
    15 October 2019596K+2.7%389K1.53
    30 September 2019580K-3.9%373K1.55
    13 September 2019604K-1.3%354K1.71
    30 August 2019612K+1.1%187K3.28
    15 August 2019605K+0.7%317K1.91
    31 July 2019601K+24.6%450K1.33
    15 July 2019482K-8.4%214K2.25
    28 June 2019526K-11.6%320K1.65
    14 June 2019595K+15.4%217K2.74
    31 May 2019516K-6.0%204K2.53
    15 May 2019549K-19.5%305K1.80
    30 April 2019682K-12.0%403K1.69
    15 April 2019775K-11.9%354K2.19
    29 March 2019880K-11.8%378K2.33
    15 March 2019997K+19.0%448K2.23
    28 February 2019838K-4.7%674K1.24
    15 February 2019879K-5.6%671K1.31
    31 January 2019931K+6.4%336K2.77
    15 January 2019875K-19.7%356K2.46
    31 December 20181.1M+1.5%417K2.62
    14 December 20181.1M+0.2%392K2.74
    30 November 20181.1M-14.8%256K4.18
    15 November 20181.3M+4.7%305K4.12
    31 October 20181.2M-1.2%435K2.77
    15 October 20181.2M+26.2%342K3.56
    28 September 2018965K-7.9%418K2.31
    14 September 20181.0M+5.3%312K3.36
    31 August 2018995K-11.2%264K3.76
    15 August 20181.1M-21.9%324K3.46
    31 July 20181.4M+3.1%467K3.07
    13 July 20181.4M-21.1%342K4.06
    29 June 20181.8M+10.9%392K4.49
    15 June 20181.6M-9.9%334K4.76
    31 May 20181.8M+10.0%299K5.89
    15 May 20181.6M-0.8%310K5.18
    30 April 20181.6M+29.3%543K2.98
    13 April 20181.3M-12.3%401K3.12
    29 March 20181.4M-33.7%393K3.63
    15 March 20182.2M+7.2%390K5.51
    28 February 20182.0M+56.9%546K3.68
    15 February 20181.3M-4.1%459K2.79
    31 January 20181.3M+7.0%392K3.40
    12 January 20181.2M-0.7%280K4.45
    29 December 20171.3M239K5.25
    Shares in millions (M) or thousands (K); hold the pointer on a figure for the exact count. Counts before a split are restated to today's shares. FINRA publishes consolidated short interest twice a month, about ten days after each settlement.