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Celldex Therapeutics, Inc. short interest

9.6M shares of Celldex Therapeutics were sold short at the 15 October 2026 settlement, near the middle of its range over the last year (6.9M to 11.0M). Short sellers would need 5.9 days of normal trading to buy them back.

Shares sold short9.6Mat 15 Oct 2026
Change on the settlement before-12.8%+30% over a year
Days to cover5.88at 1.6M shares a day
Of shares in issue12.23%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 middle of its range over the last year (6.9M to 11.0M), and the share price moved +10% 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

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    Every settlement since 29 Dec 2017 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 20269.6M-12.8%1.6M5.88
    30 September 202611.0M+22.9%2.9M3.81
    15 September 20269.0M+3.6%683K13.12
    31 August 20268.6M+14.2%707K12.23
    14 August 20267.6M-0.8%955K7.93
    31 July 20267.6M-0.5%1.0M7.62
    15 July 20267.7M-1.0%838K9.14
    30 June 20267.7M+6.1%1.8M4.30
    15 June 20267.3M+2.1%806K9.05
    29 May 20267.1M+0.2%666K10.73
    15 May 20267.1M-6.2%709K10.06
    30 April 20267.6M-8.5%808K9.41
    15 April 20268.3M-8.4%1.5M5.54
    31 March 20269.1M-1.7%1.1M8.49
    13 March 20269.2M+2.6%929K9.95
    27 February 20269.0M-1.9%1.1M8.44
    13 February 20269.2M-0.6%691K13.30
    30 January 20269.2M+2.2%476K19.42
    15 January 20269.0M+9.6%834K10.84
    31 December 20258.2M+20.1%673K12.26
    15 December 20256.9M-20.9%869K7.90
    28 November 20258.7M-1.9%654K13.27
    14 November 20258.8M+17.8%1.0M8.49
    31 October 20257.5M+1.5%721K10.41
    15 October 20257.4M+4.4%961K7.70
    30 September 20257.1M+7.6%1.2M6.03
    15 September 20256.6M-8.8%1.5M4.44
    29 August 20257.2M-1.3%1.8M4.09
    15 August 20257.3M-6.0%1.2M6.19
    31 July 20257.8M-8.1%890K8.74
    15 July 20258.5M+7.6%990K8.55
    30 June 20257.9M+0.6%1.1M7.03
    13 June 20257.8M-6.5%1.3M6.09
    30 May 20258.4M-8.3%1.1M7.68
    15 May 20259.1M+1.3%745K12.26
    30 April 20259.0M+2.6%641K14.05
    15 April 20258.8M+5.7%992K8.85
    31 March 20258.3M-9.3%748K11.10
    14 March 20259.2M+3.1%818K11.19
    28 February 20258.9M-3.4%642K13.84
    14 February 20259.2M+3.6%860K10.69
    31 January 20258.9M+4.6%791K11.22
    15 January 20258.5M+4.9%1.4M6.21
    31 December 20248.1M+10.6%816K9.91
    13 December 20247.3M-5.1%981K7.45
    29 November 20247.7M-1.7%1.1M7.05
    15 November 20247.8M-4.9%1.1M6.96
    31 October 20248.2M-1.9%965K8.54
    15 October 20248.4M+1.1%825K10.18
    30 September 20248.3M-1.2%2.2M3.71
    13 September 20248.4M-1.9%676K12.43
    30 August 20248.6M-1.0%566K15.16
    15 August 20248.7M+3.2%642K13.50
    31 July 20248.4M+13.6%854K9.83
    15 July 20247.4M+5.8%535K13.81
    28 June 20247.0M+8.7%924K7.56
    14 June 20246.4M+2.6%682K9.43
    31 May 20246.3M-5.3%612K10.24
    15 May 20246.6M-5.4%571K11.59
    30 April 20247.0M+3.6%595K11.75
    15 April 20246.7M+2.9%626K10.79
    28 March 20246.6M+11.2%781K8.39
    15 March 20245.9M-8.0%1.5M3.90
    29 February 20246.4M-7.6%1.4M4.58
    15 February 20246.9M+3.4%673K10.31
    31 January 20246.7M+7.8%677K9.91
    12 January 20246.2M-5.5%641K9.71
    29 December 20236.6M-10.4%552K11.94
    15 December 20237.4M-8.9%655K11.23
    30 November 20238.1M+2.4%779K10.35
    15 November 20237.9M+40.3%1.7M4.76
    31 October 20235.6M+0.9%489K11.49
    13 October 20235.6M-3.4%415K13.41
    29 September 20235.8M-5.3%413K13.97
    15 September 20236.1M-3.3%455K13.37
    31 August 20236.3M-3.7%590K10.67
    15 August 20236.5M+8.4%365K17.91
    31 July 20236.0M-3.9%370K16.30
    14 July 20236.3M+1.8%356K17.64
    30 June 20236.2M+2.7%616K9.99
    15 June 20236.0M+3.3%527K11.38
    31 May 20235.8M+7.2%369K15.71
    15 May 20235.4M+1.0%486K11.13
    28 April 20235.4M+3.5%689K7.79
    14 April 20235.2M-1.7%952K5.44
    31 March 20235.3M+38.1%781K6.75
    15 March 20233.8M+5.5%476K8.02
    28 February 20233.6M+4.3%538K6.72
    15 February 20233.5M+4.3%344K10.09
    31 January 20233.3M-4.1%340K9.76
    13 January 20233.5M+1.7%437K7.92
    30 December 20223.4M-17.3%636K5.36
    15 December 20224.1M+1.7%627K6.58
    30 November 20224.1M-1.8%347K11.67
    15 November 20224.1M-8.3%523K7.89
    31 October 20224.5M-1.0%414K10.86
    14 October 20224.5M-1.5%435K10.45
    30 September 20224.6M+2.6%479K9.62
    15 September 20224.5M+2.1%415K10.83
    31 August 20224.4M+4.0%521K8.45
    15 August 20224.2M+14.4%622K6.81
    29 July 20223.7M-3.0%456K8.10
    15 July 20223.8M-0.3%1.6M2.45
    30 June 20223.8M-18.7%1.1M3.50
    15 June 20224.7M+1.5%734K6.41
    31 May 20224.6M-5.6%624K7.44
    13 May 20224.9M-0.9%692K7.10
    29 April 20225.0M-9.3%408K12.16
    14 April 20225.5M-0.2%584K9.37
    31 March 20225.5M-8.7%472K11.60
    15 March 20226.0M+3.4%673K8.93
    28 February 20225.8M+11.7%538K10.80
    15 February 20225.2M+2.4%483K10.77
    31 January 20225.1M+3.2%701K7.24
    14 January 20224.9M+3.1%587K8.37
    31 December 20214.8M+10.1%571K8.35
    15 December 20214.3M+6.5%433K10.00
    30 November 20214.1M+12.3%439K9.26
    15 November 20213.6M-2.7%322K11.26
    29 October 20213.7M+25.8%398K9.36
    15 October 20213.0M-0.9%464K6.37
    30 September 20213.0M-10.8%508K5.88
    15 September 20213.3M-15.5%480K6.97
    31 August 20214.0M-8.1%537K7.37
    13 August 20214.3M+15.1%666K6.47
    30 July 20213.7M+11.7%719K5.20
    15 July 20213.3M+19.0%2.1M1.60
    30 June 20212.8M+11.3%1.1M2.66
    15 June 20212.5M-18.5%409K6.18
    28 May 20213.1M-3.8%277K11.18
    14 May 20213.2M-3.0%365K8.83
    30 April 20213.3M-3.6%449K7.40
    15 April 20213.4M-3.0%336K10.27
    31 March 20213.6M+24.9%1.3M2.76
    15 March 20212.8M-0.9%449K6.35
    26 February 20212.9M-16.4%673K4.27
    12 February 20213.4M-2.1%496K6.94
    29 January 20213.5M-1.7%609K5.77
    15 January 20213.6M-25.7%486K7.35
    31 December 20204.8M+118.5%760K6.33
    15 December 20202.2M-9.6%712K3.09
    30 November 20202.4M-13.8%529K4.60
    13 November 20202.8M-5.3%471K5.99
    30 October 20203.0M-8.0%322K9.27
    15 October 20203.2M-1.5%804K4.03
    30 September 20203.3M+9.7%997K3.30
    15 September 20203.0M+23.3%608K4.93
    31 August 20202.4M+102.4%522K4.66
    14 August 20201.2M+52.7%450K2.67
    31 July 2020787K-17.3%593K1.33
    15 July 2020951K-37.7%747K1.27
    30 June 20201.5M-34.1%2.8M1.00
    15 June 20202.3M+669.6%10.2M1.00
    29 May 2020301K+13.8%383K1.00
    15 May 2020264K-13.9%348K1.00
    30 April 2020307K-2.6%806K1.00
    15 April 2020315K-2.4%246K1.28
    31 March 2020322K-22.3%155K2.09
    13 March 2020415K+8.9%202K2.06
    28 February 2020381K+56.1%1.3M1.00
    14 February 2020244K-8.2%69K3.53
    31 January 2020266K-6.3%113K2.35
    15 January 2020284K-8.4%164K1.73
    31 December 2019310K-11.8%122K2.54
    13 December 2019351K-18.5%137K2.56
    29 November 2019431K+30.2%116K3.72
    15 November 2019331K-42.0%271K1.22
    31 October 2019570K+18.8%61K9.28
    15 October 2019480K-7.7%89K5.42
    30 September 2019520K-12.4%101K5.18
    13 September 2019594K-33.5%147K4.04
    30 August 2019894K-25.4%174K5.13
    15 August 20191.2M+0.7%178K6.74
    31 July 20191.2M+16.6%126K9.47
    15 July 20191.0M-17.2%96K10.65
    28 June 20191.2M+1.2%210K5.88
    14 June 20191.2M+0.2%406K3.00
    31 May 20191.2M-15.3%259K4.70
    15 May 20191.4M+19.1%422K3.40
    30 April 20191.2M+38.4%509K2.37
    15 April 2019872K+22.2%757K1.15
    29 March 2019713K-6.9%291K2.45
    15 March 2019766K+24.8%300K2.56
    28 February 2019614K+60.1%444K1.38
    15 February 2019383K+167.8%891K1.00
    31 January 2019143K+1.3%321K1.00
    15 January 2019141K-3.1%104K1.35
    31 December 2018146K-23.0%155K1.00
    14 December 2018189K+16.9%108K1.75
    30 November 2018162K+3.1%81K2.00
    15 November 2018157K-19.2%120K1.31
    31 October 2018194K-27.5%159K1.22
    15 October 2018268K+0.5%78K3.42
    28 September 2018267K+2.8%93K2.86
    14 September 2018259K+9.6%95K2.73
    31 August 2018237K+8.2%103K2.29
    15 August 2018219K-7.1%81K2.70
    31 July 2018236K-7.7%93K2.54
    13 July 2018255K-28.5%109K2.35
    29 June 2018357K-38.1%331K1.08
    15 June 2018576K+0.7%219K2.64
    31 May 2018572K+10.4%206K2.77
    15 May 2018519K-4.1%163K3.17
    30 April 2018541K-22.3%567K1.00
    13 April 2018696K+14.7%96K7.26
    29 March 2018607K-5.4%95K6.42
    15 March 2018642K+1.3%130K4.94
    28 February 2018634K+15.5%80K7.93
    15 February 2018549K+9.5%88K6.24
    31 January 2018501K+3.5%75K6.69
    12 January 2018484K-0.4%82K5.92
    29 December 2017486K71K6.86
    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.