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HowShorted

How shorted is Celldex Therapeutics, Inc.? CLDX

#530most shorted US stockof 3,805 ranked stocks, more shorted than 86%

11.40%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.40
5 reports (~10 weeks)
+1.54
days to cover
13.12
Aggregate net short position time series for Celldex Therapeutics, Inc.

Markers along the chart's base: ▲ results announced (an 8-K reporting results was filed) ▲ quarterly or annual report filed. Dates are SEC filing dates; hover a point to see events since the previous settlement.

Days to cover

FINRA's own figure: reported shares short divided by the stock's average daily trading volume, published alongside each settlement. It expresses the short position in days of typical trading rather than as a percentage of the company; the two can move differently.

Aggregate net short position time series for Celldex Therapeutics, Inc. days to cover

Short interest around results

For each results announcement (an 8-K reporting results, by its SEC filing date), the FINRA settlement before it and the first one after. Settlements fall twice a month, so the two figures can sit up to a month apart and much else changes in between: this shows what was reported, not why.

Reported short interest before and after each results announcement
Results filedSettlement beforeSettlement afterChange
6 Aug 20269.71% 31 Jul 20269.64% 14 Aug 2026−0.07
7 May 20269.68% 30 Apr 20269.08% 15 May 2026−0.60
25 Feb 202613.79% 13 Feb 202613.53% 27 Feb 2026−0.26
10 Nov 202511.30% 31 Oct 202513.31% 14 Nov 2025+2.01
7 Aug 202511.72% 31 Jul 202511.01% 15 Aug 2025−0.71
8 May 202513.57% 30 Apr 202513.75% 15 May 2025+0.18
27 Feb 202513.85% 14 Feb 202513.37% 28 Feb 2025−0.48
6 Nov 202412.42% 31 Oct 202411.81% 15 Nov 2024−0.61

Fails to deliver

The SEC's fails-to-deliver figure for CLDX: the aggregate net balance of shares that failed to be delivered at each settlement date, published by the SEC twice a month and shown here verbatim for the trailing window. A balance is not a daily flow, and a fail has many ordinary causes; the SEC says it cannot guarantee the accuracy of the data. See what fails to deliver are and the largest balances today.

Last balance on file
54,085
1 Sep 2026
Highest in window
168,044
3 Nov 2025
Days with a balance
45
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Celldex Therapeutics, Inc. fails to deliver

Source: U.S. Securities and Exchange Commission, fails-to-deliver data (public domain). Only settlement days with a positive balance appear; the largest balance in the window was 168K shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202611.40%+0.40
31 Aug 202611.00%+1.36
14 Aug 20269.64%−0.07
31 Jul 20269.71%−0.05
15 Jul 20269.76%−0.10
30 Jun 20269.86%+0.57
15 Jun 20269.29%+0.19
29 May 20269.10%+0.02
15 May 20269.08%−0.60
30 Apr 20269.68%−2.80
15 Apr 202612.48%−1.15
31 Mar 202613.63%−0.25
13 Mar 202613.88%+0.35
27 Feb 202613.53%−0.26
13 Feb 202613.79%−0.11
30 Jan 202613.90%+0.30
15 Jan 202613.60%+1.19
31 Dec 202512.41%+2.08
15 Dec 202510.33%−2.73
28 Nov 202513.06%−0.25
14 Nov 202513.31%+2.01
31 Oct 202511.30%+0.16
15 Oct 202511.14%+0.47
30 Sep 202510.67%+0.76
15 Sep 20259.91%−0.95
29 Aug 202510.86%−0.15
15 Aug 202511.01%−0.71
31 Jul 202511.72%−1.04
15 Jul 202512.76%+0.90
30 Jun 202511.86%+0.07
13 Jun 202511.79%−0.82
30 May 202512.61%−1.14
15 May 202513.75%+0.18
30 Apr 202513.57%+0.34
15 Apr 202513.23%+0.72
31 Mar 202512.51%−1.28
14 Mar 202513.79%+0.42
28 Feb 202513.37%−0.48
14 Feb 202513.85%+0.47
31 Jan 202513.38%+0.60
15 Jan 202512.78%+0.59
31 Dec 202412.19%+1.17
13 Dec 202411.02%−0.59
29 Nov 202411.61%−0.20
15 Nov 202411.81%−0.61
31 Oct 202412.42%−0.25
15 Oct 202412.67%+0.14
30 Sep 202412.53%−0.16
13 Sep 202412.69%−0.24
30 Aug 202412.93%−0.14
15 Aug 202413.07%+0.40
31 Jul 202412.67%+1.46
15 Jul 202411.21%+0.61
28 Jun 202410.60%+0.85
14 Jun 20249.75%+0.24
31 May 20249.51%−0.53
15 May 202410.04%−0.56
30 Apr 202410.60%−1.47
15 Apr 202412.07%+0.34
28 Mar 202411.73%+1.18
15 Mar 202410.55%−0.92
29 Feb 202411.47%−0.95
15 Feb 202412.42%−1.78
31 Jan 202414.20%+1.03
12 Jan 202413.17%−0.77
29 Dec 202313.94%−1.61
15 Dec 202315.55%−1.52
30 Nov 202317.07%+0.39
15 Nov 202316.68%+4.79
31 Oct 202311.89%+0.11
13 Oct 202311.78%−0.42
29 Sep 202312.20%−0.68
15 Sep 202312.88%−0.45
31 Aug 202313.33%−0.51
15 Aug 202313.84%+1.08
31 Jul 202312.76%−0.51
14 Jul 202313.27%+0.24
30 Jun 202313.03%+0.34
15 Jun 202312.69%+0.41
31 May 202312.28%+0.82
15 May 202311.46%+0.11
28 Apr 202311.35%+0.37
14 Apr 202310.98%−0.18
31 Mar 202311.16%+3.08
15 Mar 20238.08%+0.42
28 Feb 20237.66%+0.31
15 Feb 20237.35%+0.29
31 Jan 20237.06%−0.30
13 Jan 20237.36%+0.12
30 Dec 20227.24%−1.51
15 Dec 20228.75%+0.14
30 Nov 20228.61%−0.15
15 Nov 20228.76%−0.79
31 Oct 20229.55%−0.16
14 Oct 20229.71%−0.15
30 Sep 20229.86%+0.25
15 Sep 20229.61%+0.20
31 Aug 20229.41%+0.36
15 Aug 20229.05%+1.14
29 Jul 20227.91%−0.24
15 Jul 20228.15%−0.03
30 Jun 20228.18%−1.89
15 Jun 202210.07%+0.15
31 May 20229.92%−0.59
13 May 202210.51%−0.10
29 Apr 202210.61%−1.11
14 Apr 202211.72%−0.02
31 Mar 202211.74%−1.13
15 Mar 202212.87%+0.42
28 Feb 202212.45%+1.30
15 Feb 202211.15%+0.27
31 Jan 202210.88%+0.34
14 Jan 202210.54%+0.32
31 Dec 202110.22%+0.93
15 Dec 20219.29%+0.57
30 Nov 20218.72%+0.96
15 Nov 20217.76%−0.25
29 Oct 20218.01%+1.65
15 Oct 20216.36%−0.06
30 Sep 20216.42%−0.78
15 Sep 20217.20%−1.32
31 Aug 20218.52%−0.75
13 Aug 20219.27%−0.18
30 Jul 20219.45%+0.99
15 Jul 20218.46%+1.36
30 Jun 20217.10%+0.72
15 Jun 20216.38%−1.45
28 May 20217.83%−0.31
14 May 20218.14%−0.25
30 Apr 20218.39%−0.31
15 Apr 20218.70%−0.28
31 Mar 20218.98%+1.78
15 Mar 20217.20%−0.07
26 Feb 20217.27%−1.43
12 Feb 20218.70%−0.18
29 Jan 20218.88%−0.15
15 Jan 20219.03%−3.12
31 Dec 202012.15%+6.59
15 Dec 20205.56%−0.59
30 Nov 20206.15%−0.99
13 Nov 20207.14%−0.48
30 Oct 20207.62%−0.67
15 Oct 20208.29%−0.12
30 Sep 20208.41%+0.75
15 Sep 20207.66%+1.45
31 Aug 20206.21%+3.14
14 Aug 20203.07%+1.06
31 Jul 20202.01%+0.30
29 May 20201.71%+0.21
15 May 20201.50%−0.25
30 Apr 20201.75%−0.04
15 Apr 20201.79%−0.04
31 Mar 20201.83%−0.53
13 Mar 20202.36%0.00
28 Feb 20202.36%+0.85
14 Feb 20201.51%−0.14
31 Jan 20201.65%−0.11
15 Jan 20201.76%−0.16
31 Dec 20191.92%−0.26
13 Dec 20192.18%−0.49
29 Nov 20192.67%+0.62
15 Nov 20192.05%−1.49
31 Oct 20193.54%+0.34
15 Oct 20193.20%−0.26
30 Sep 20193.46%−0.50
13 Sep 20193.96%−1.99
30 Aug 20195.95%−2.03
15 Aug 20197.98%+0.05
31 Jul 20197.93%+0.51
15 Jul 20197.42%−1.54
28 Jun 20198.96%+0.10
14 Jun 20198.86%+0.03
31 May 20198.83%−1.60
15 May 201910.43%+1.67
30 Apr 20198.76%+7.52
31 Jan 20191.24%+0.01
15 Jan 20191.23%−0.04
31 Dec 20181.27%−0.38
14 Dec 20181.65%+0.24
30 Nov 20181.41%+0.04
15 Nov 20181.37%−0.32
31 Oct 20181.69%−0.79
15 Oct 20182.48%+0.02
28 Sep 20182.46%+0.06
14 Sep 20182.40%+0.21
31 Aug 20182.19%+0.17
15 Aug 20182.02%−0.16
31 Jul 20182.18%−0.54
13 Jul 20182.72%−1.08
29 Jun 20183.80%−2.33
15 Jun 20186.13%+0.04
31 May 20186.09%+0.58
15 May 20185.51%−0.24
30 Apr 20185.75%−1.65
13 Apr 20187.40%+0.95
29 Mar 20186.45%−0.37
15 Mar 20186.82%+0.08
28 Feb 20186.74%+0.69
15 Feb 20186.05%+0.52
31 Jan 20185.53%+0.19
12 Jan 20185.34%−0.02
29 Dec 20175.36%–

Newest first. Scroll inside the table for earlier dates, back to 29 Dec 2017.

Frequently asked questions

How shorted is Celldex Therapeutics, Inc. right now?
11.40% of Celldex Therapeutics, Inc.'s (CLDX) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 530th most shorted US stock, out of 3,805 we rank.
What does this number include?
FINRA member firms must report their short positions in all US equities twice a month; FINRA consolidates them per security. We divide that official share count by the company's shares outstanding from its SEC filings. This is the regulatory figure, not a daily estimate.
Why does it only update twice a month?
US short interest is reported for settlement on the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. That cadence is set by regulation; no daily official figure exists.
Is this CLDX's short float?
No. This is short interest as a percentage of shares outstanding, the count in the company's SEC filings. "Short float" divides the same FINRA short count by the public float, which excludes closely held shares, so it comes out higher for the same company. We publish no float estimates: the float is not a regulatory figure.
What is CLDX's days to cover?
13.12 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume. It is published in the same FINRA file and shown verbatim; we hold no volume data ourselves.
Which funds are short?
US public short interest is aggregate-only: individual short sellers are not named. Only some EU markets publish named positions.