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HowShorted

How shorted is MERIT MEDICAL SYSTEMS INC? MMSI

#1,247most shorted US stockof 3,805 ranked stocks, more shorted than 67%

6.59%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.53
5 reports (~10 weeks)
+0.90
days to cover
6.00
Aggregate net short position time series for MERIT MEDICAL SYSTEMS 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 MERIT MEDICAL SYSTEMS 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
30 Jul 20265.77% 15 Jul 20266.26% 31 Jul 2026+0.49
30 Apr 20264.97% 15 Apr 20264.82% 15 May 2026−0.15
24 Feb 20266.32% 13 Feb 20265.99% 27 Feb 2026−0.33
8 Jan 20266.71% 31 Dec 20256.32% 15 Jan 2026−0.39
30 Oct 20255.63% 15 Oct 20255.20% 31 Oct 2025−0.43
30 Jul 20256.21% 15 Jul 20255.67% 31 Jul 2025−0.54
11 Jul 20256.07% 30 Jun 20256.21% 15 Jul 2025+0.14
20 May 20255.33% 15 May 20255.77% 30 May 2025+0.44

Fails to deliver

The SEC's fails-to-deliver figure for MMSI: 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
1,598
11 Sep 2026
Highest in window
35,117
17 Nov 2025
Days with a balance
66
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for MERIT MEDICAL SYSTEMS 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 35K shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20266.59%+0.53
31 Aug 20266.06%+0.27
14 Aug 20265.79%−0.47
31 Jul 20266.26%+0.49
15 Jul 20265.77%+0.08
30 Jun 20265.69%+0.68
15 Jun 20265.01%+0.07
29 May 20264.94%+0.12
15 May 20264.82%−0.61
30 Apr 20265.43%+0.46
15 Apr 20264.97%−0.18
31 Mar 20265.15%−0.56
13 Mar 20265.71%−0.28
27 Feb 20265.99%−0.33
13 Feb 20266.32%−0.11
30 Jan 20266.43%+0.11
15 Jan 20266.32%−0.39
31 Dec 20256.71%+0.33
15 Dec 20256.38%+0.93
28 Nov 20255.45%+0.52
14 Nov 20254.93%−0.27
31 Oct 20255.20%−0.43
15 Oct 20255.63%−0.59
30 Sep 20256.22%+0.78
15 Sep 20255.44%+0.22
29 Aug 20255.22%−0.14
15 Aug 20255.36%−0.31
31 Jul 20255.67%−0.54
15 Jul 20256.21%+0.14
30 Jun 20256.07%+0.53
13 Jun 20255.54%−0.23
30 May 20255.77%+0.44
15 May 20255.33%−0.22
30 Apr 20255.55%−0.02
15 Apr 20255.57%+0.94
31 Mar 20254.63%−0.93
14 Mar 20255.56%+0.40
28 Feb 20255.16%−0.01
14 Feb 20255.17%+0.13
31 Jan 20255.04%+0.48
15 Jan 20254.56%+0.43
31 Dec 20244.13%−0.28
13 Dec 20244.41%+0.02
29 Nov 20244.39%−0.01
15 Nov 20244.40%−0.21
31 Oct 20244.61%+0.64
15 Oct 20243.97%−0.44
30 Sep 20244.41%+0.03
13 Sep 20244.38%−0.40
30 Aug 20244.78%+0.14
15 Aug 20244.64%−0.13
31 Jul 20244.77%−0.33
15 Jul 20245.10%−0.02
28 Jun 20245.12%+0.55
14 Jun 20244.57%+0.25
31 May 20244.32%+0.31
15 May 20244.01%+0.13
30 Apr 20243.88%+0.31
15 Apr 20243.57%+0.14
28 Mar 20243.43%−0.49
15 Mar 20243.92%−0.19
29 Feb 20244.11%+0.25
15 Feb 20243.86%+0.01
31 Jan 20243.85%−0.03
12 Jan 20243.88%+0.21
29 Dec 20233.67%+0.34
15 Dec 20233.33%+1.78
30 Nov 20231.55%−0.02
15 Nov 20231.57%+0.19
31 Oct 20231.38%−0.14
13 Oct 20231.52%−0.08
29 Sep 20231.60%−0.16
15 Sep 20231.76%−0.05
31 Aug 20231.81%+0.12
15 Aug 20231.69%+0.54
31 Jul 20231.15%+0.02
14 Jul 20231.13%+0.06
30 Jun 20231.07%−0.21
15 Jun 20231.28%+0.05
31 May 20231.23%−0.11
15 May 20231.34%−0.10
28 Apr 20231.44%+0.30
14 Apr 20231.14%+0.10
31 Mar 20231.04%−0.18
15 Mar 20231.22%+0.07
28 Feb 20231.15%+0.08
15 Feb 20231.07%0.00
31 Jan 20231.07%−0.05
13 Jan 20231.12%0.00
30 Dec 20221.12%+0.10
15 Dec 20221.02%+0.06
30 Nov 20220.96%−0.51
15 Nov 20221.47%−0.61
31 Oct 20222.08%−0.12
14 Oct 20222.20%−0.09
30 Sep 20222.29%+0.59
15 Sep 20221.70%−0.18
31 Aug 20221.88%+0.21
15 Aug 20221.67%−0.10
29 Jul 20221.77%−0.09
15 Jul 20221.86%−0.19
30 Jun 20222.05%−0.01
15 Jun 20222.06%+0.04
31 May 20222.02%−0.88
13 May 20222.90%+0.88
29 Apr 20222.02%+0.14
14 Apr 20221.88%+0.16
31 Mar 20221.72%−0.08
15 Mar 20221.80%−0.63
28 Feb 20222.43%+0.61
15 Feb 20221.82%+0.19
31 Jan 20221.63%+0.07
14 Jan 20221.56%−0.21
31 Dec 20211.77%−0.23
15 Dec 20212.00%−0.06
30 Nov 20212.06%−0.02
15 Nov 20212.08%−0.04
29 Oct 20212.12%−0.68
15 Oct 20212.80%−0.09
30 Sep 20212.89%−0.01
15 Sep 20212.90%0.00
31 Aug 20212.90%−0.11
13 Aug 20213.01%−0.23
30 Jul 20213.24%+0.18
15 Jul 20213.06%−0.12
30 Jun 20213.18%−0.43
15 Jun 20213.61%−0.05
28 May 20213.66%−0.02
14 May 20213.68%−0.01
30 Apr 20213.69%−0.42
15 Apr 20214.11%−0.16
31 Mar 20214.27%−0.41
15 Mar 20214.68%−0.19
26 Feb 20214.87%−0.33
12 Feb 20215.20%−0.22
29 Jan 20215.42%−0.23
15 Jan 20215.65%−0.25
31 Dec 20205.90%−0.01
15 Dec 20205.91%−0.89
30 Nov 20206.80%+0.04
13 Nov 20206.76%−0.34
30 Oct 20207.10%+0.65
15 Oct 20206.45%+0.07
30 Sep 20206.38%−0.74
15 Sep 20207.12%+0.31
31 Aug 20206.81%+0.04
14 Aug 20206.77%+0.34
31 Jul 20206.43%−0.99
15 Jul 20207.42%−0.83
30 Jun 20208.25%+0.19
15 Jun 20208.06%−0.39
29 May 20208.45%−0.40
15 May 20208.85%0.00
30 Apr 20208.85%−1.10
15 Apr 20209.95%−0.12
31 Mar 202010.07%+0.01
13 Mar 202010.06%−0.31
28 Feb 202010.37%+0.05
14 Feb 202010.32%+0.09
31 Jan 202010.23%−2.42
15 Jan 202012.65%+1.82
31 Dec 201910.83%+2.22
13 Dec 20198.61%+1.12
29 Nov 20197.49%−0.56
15 Nov 20198.05%+0.75
31 Oct 20197.30%+0.45
15 Oct 20196.85%−0.03
30 Sep 20196.88%+0.59
13 Sep 20196.29%−0.75
30 Aug 20197.04%+0.57
15 Aug 20196.47%+0.29
31 Jul 20196.18%−0.74
15 Jul 20196.92%+0.09
28 Jun 20196.83%+0.33
14 Jun 20196.50%−0.34
31 May 20196.84%+0.47
15 May 20196.37%+0.29
30 Apr 20196.08%+0.02
15 Apr 20196.06%−0.07
29 Mar 20196.13%+0.03
15 Mar 20196.10%+1.03
28 Feb 20195.07%+0.12
15 Feb 20194.95%+0.25
31 Jan 20194.70%−0.11
15 Jan 20194.81%−0.16
31 Dec 20184.97%+0.14
14 Dec 20184.83%−0.43
30 Nov 20185.26%+0.01
15 Nov 20185.25%−0.17
31 Oct 20185.42%−0.19
15 Oct 20185.61%−0.33
28 Sep 20185.94%+0.61
14 Sep 20185.33%+1.02
31 Aug 20184.31%−0.20
15 Aug 20184.51%−0.21
31 Jul 20184.72%−0.32
13 Jul 20185.04%+1.25
29 Jun 20183.79%+0.18
15 Jun 20183.61%−0.55
31 May 20184.16%−1.10
15 May 20185.26%+0.98
30 Apr 20184.28%+0.25
13 Apr 20184.03%+0.77
29 Mar 20183.26%−0.39
15 Mar 20183.65%+0.07
28 Feb 20183.58%+0.09
15 Feb 20183.49%−0.23
31 Jan 20183.72%−0.90
12 Jan 20184.62%+0.19
29 Dec 20174.43%–

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

Frequently asked questions

How shorted is MERIT MEDICAL SYSTEMS INC right now?
6.59% of MERIT MEDICAL SYSTEMS INC's (MMSI) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 1,247th 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 MMSI'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 MMSI's days to cover?
6.00 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.