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HowShorted

How shorted is Co-Diagnostics, Inc.? CODX

#1,721most shorted US stockof 3,805 ranked stocks, more shorted than 54%

4.88%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+1.45
5 reports (~10 weeks)
−4.82
days to cover
2.35
Aggregate net short position time series for Co-Diagnostics, 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 Co-Diagnostics, 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
13 Aug 20269.68% 31 Jul 20265.80% 14 Aug 2026−3.88
14 May 20262.63% 30 Apr 20265.39% 15 May 2026+2.76
14 Aug 20251.78% 31 Jul 20251.33% 15 Aug 2025−0.45
8 May 20250.41% 30 Apr 20250.49% 15 May 2025+0.08
27 Mar 20250.63% 14 Mar 20250.48% 31 Mar 2025−0.15
7 Nov 20240.65% 31 Oct 20240.72% 15 Nov 2024+0.07
8 Aug 20240.99% 31 Jul 20240.94% 15 Aug 2024−0.05
9 May 20241.45% 30 Apr 20241.01% 15 May 2024−0.44

Fails to deliver

The SEC's fails-to-deliver figure for CODX: 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.

Latest balance
301
14 Sep 2026
Highest in window
1,398,705
28 Oct 2025
Days with a balance
110
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Co-Diagnostics, 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 1.4M shares.

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Sector: Healthcare · By year: 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20264.88%+1.45
31 Aug 20263.43%−2.37
14 Aug 20265.80%−3.88
31 Jul 20269.68%+0.16
15 Jul 20269.52%−0.18
29 May 20269.70%+4.31
15 May 20265.39%+2.76
30 Apr 20262.63%−2.05
31 Mar 20264.68%+3.62
15 Dec 20251.06%−0.81
28 Nov 20251.87%−0.94
14 Nov 20252.81%+1.67
30 Sep 20251.14%−0.92
15 Sep 20252.06%+0.73
15 Aug 20251.33%−0.45
31 Jul 20251.78%+0.94
30 Jun 20250.84%0.00
13 Jun 20250.84%−0.33
30 May 20251.17%+0.68
15 May 20250.49%+0.08
30 Apr 20250.41%−0.02
15 Apr 20250.43%−0.05
31 Mar 20250.48%−0.15
14 Mar 20250.63%+0.02
28 Feb 20250.61%−0.12
14 Feb 20250.73%−0.05
31 Jan 20250.78%−0.04
15 Jan 20250.82%−0.19
31 Dec 20241.01%+0.28
13 Dec 20240.73%+0.02
29 Nov 20240.71%−0.01
15 Nov 20240.72%+0.07
31 Oct 20240.65%−0.06
15 Oct 20240.71%+0.07
30 Sep 20240.64%−0.07
13 Sep 20240.71%−0.31
30 Aug 20241.02%+0.08
15 Aug 20240.94%−0.05
31 Jul 20240.99%−0.14
15 Jul 20241.13%−0.29
28 Jun 20241.42%+0.29
14 Jun 20241.13%−0.03
31 May 20241.16%+0.15
15 May 20241.01%−0.44
30 Apr 20241.45%0.00
15 Apr 20241.45%−0.14
28 Mar 20241.59%+0.37
15 Mar 20241.22%+0.10
29 Feb 20241.12%−0.44
15 Feb 20241.56%+0.38
31 Jan 20241.18%−0.68
12 Jan 20241.86%−0.21
29 Dec 20232.07%+0.45
15 Dec 20231.62%−0.54
30 Nov 20232.16%−0.02
15 Nov 20232.18%+0.59
31 Oct 20231.59%−0.68
13 Oct 20232.27%−0.02
29 Sep 20232.29%+0.40
15 Sep 20231.89%−0.71
31 Aug 20232.60%0.00
15 Aug 20232.60%+0.18
31 Jul 20232.42%−0.06
14 Jul 20232.48%+0.30
30 Jun 20232.18%−0.09
15 Jun 20232.27%+0.33
31 May 20231.94%−0.40
15 May 20232.34%−0.35
28 Apr 20232.69%−0.08
14 Apr 20232.77%−0.70
31 Mar 20233.47%+0.10
15 Mar 20233.37%−0.86
28 Feb 20234.23%+0.48
15 Feb 20233.75%−1.28
31 Jan 20235.03%+0.89
13 Jan 20234.14%−0.15
30 Dec 20224.29%−0.34
15 Dec 20224.63%−1.22
30 Nov 20225.85%−2.00
15 Nov 20227.85%+0.89
31 Oct 20226.96%+0.95
14 Oct 20226.01%+0.46
30 Sep 20225.55%−1.35
15 Sep 20226.90%+0.12
31 Aug 20226.78%+0.58
15 Aug 20226.20%+0.10
29 Jul 20226.10%+1.03
15 Jul 20225.07%−0.51
30 Jun 20225.58%+0.15
15 Jun 20225.43%−0.03
31 May 20225.46%−1.17
13 May 20226.63%+2.42
29 Apr 20224.21%−1.78
14 Apr 20225.99%+0.41
31 Mar 20225.58%+0.28
15 Mar 20225.30%+0.02
28 Feb 20225.28%−1.50
15 Feb 20226.78%+0.31
31 Jan 20226.47%+0.90
14 Jan 20225.57%+0.62
31 Dec 20214.95%+0.58
15 Dec 20214.37%−0.46
30 Nov 20214.83%−2.81
15 Nov 20217.64%+1.89
29 Oct 20215.75%−1.47
15 Oct 20217.22%−0.23
30 Sep 20217.45%−0.25
15 Sep 20217.70%−0.56
31 Aug 20218.26%−2.53
13 Aug 202110.79%+0.26
30 Jul 202110.53%−1.15
15 Jul 202111.68%−0.95
30 Jun 202112.63%−3.70
15 Jun 202116.33%−0.58
28 May 202116.91%−0.07
14 May 202116.98%+1.20
30 Apr 202115.78%+0.96
15 Apr 202114.82%−2.43
31 Mar 202117.25%+2.78
15 Mar 202114.47%+0.48
26 Feb 202113.99%−3.67
12 Feb 202117.66%−0.19
29 Jan 202117.85%−3.32
15 Jan 202121.17%−1.93
31 Dec 202023.10%−0.98
15 Dec 202024.08%−1.67
30 Nov 202025.75%+1.18
13 Nov 202024.57%+1.56
30 Oct 202023.01%−0.95
15 Oct 202023.96%−0.68
30 Sep 202024.64%−5.27
15 Sep 202029.91%+1.97
31 Aug 202027.94%+4.26
14 Aug 202023.68%+1.03
31 Jul 202022.65%+0.80
15 Jul 202021.85%+4.13
30 Jun 202017.72%+5.76
15 Jun 202011.96%−1.03
29 May 202012.99%−7.25
15 May 202020.24%+2.10
30 Apr 202018.14%+0.89
15 Apr 202017.25%−0.04
31 Mar 202017.29%+13.82
15 Jan 20203.47%+0.03
31 Dec 20193.44%−0.02
13 Dec 20193.46%+0.29
29 Nov 20193.17%+0.49
15 Nov 20192.68%−0.48
31 Oct 20193.16%+0.87
15 Oct 20192.29%–

Newest first. Scroll inside the table for earlier dates, back to 15 Oct 2019.

Frequently asked questions

How shorted is Co-Diagnostics, Inc. right now?
4.88% of Co-Diagnostics, Inc.'s (CODX) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 1,721st 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 CODX'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 CODX's days to cover?
2.35 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.