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HowShorted

How shorted is MP Materials Corp.? MP

#151most shorted US stockof 3,805 ranked stocks, more shorted than 96%

18.85%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.82
5 reports (~10 weeks)
+3.79
days to cover
7.09
Aggregate net short position time series for MP Materials Corp.

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 MP Materials Corp. 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 202615.89% 31 Jul 202616.40% 14 Aug 2026+0.51
7 May 202615.07% 30 Apr 202615.43% 15 May 2026+0.36
26 Feb 202613.99% 13 Feb 202613.16% 27 Feb 2026−0.83
6 Nov 202513.51% 31 Oct 202513.90% 14 Nov 2025+0.39
7 Aug 202513.58% 31 Jul 202513.82% 15 Aug 2025+0.24
8 May 202519.07% 30 Apr 202516.48% 15 May 2025−2.59
20 Feb 202512.78% 14 Feb 202511.93% 28 Feb 2025−0.85
7 Nov 202413.63% 31 Oct 202412.69% 15 Nov 2024−0.94

Fails to deliver

The SEC's fails-to-deliver figure for MP: 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
12,200
14 Sep 2026
Highest in window
701,013
12 Nov 2025
Days with a balance
166
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for MP Materials Corp. 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 701K shares.

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Sector: Materials

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 202618.85%+0.82
31 Aug 202618.03%+1.63
14 Aug 202616.40%+0.51
31 Jul 202615.89%−0.07
15 Jul 202615.96%+0.90
30 Jun 202615.06%−1.15
15 Jun 202616.21%+0.43
29 May 202615.78%+0.35
15 May 202615.43%+0.36
30 Apr 202615.07%−0.20
15 Apr 202615.27%+0.76
31 Mar 202614.51%+1.39
13 Mar 202613.12%−0.04
27 Feb 202613.16%−0.83
13 Feb 202613.99%+0.15
30 Jan 202613.84%+0.09
15 Jan 202613.75%+0.62
31 Dec 202513.13%−0.49
15 Dec 202513.62%+0.32
28 Nov 202513.30%−0.60
14 Nov 202513.90%+0.39
31 Oct 202513.51%−0.13
15 Oct 202513.64%−0.45
30 Sep 202514.09%+0.77
15 Sep 202513.32%+0.20
29 Aug 202513.12%−0.70
15 Aug 202513.82%+0.24
31 Jul 202513.58%−3.73
15 Jul 202517.31%−1.58
30 Jun 202518.89%−0.02
13 Jun 202518.91%+1.90
30 May 202517.01%+0.53
15 May 202516.48%−2.59
30 Apr 202519.07%+1.26
15 Apr 202517.81%+4.56
31 Mar 202513.25%+0.51
14 Mar 202512.74%+0.81
28 Feb 202511.93%−0.85
14 Feb 202512.78%+1.45
31 Jan 202511.33%−0.87
15 Jan 202512.20%−0.91
31 Dec 202413.11%−0.30
13 Dec 202413.41%+1.24
29 Nov 202412.17%−0.52
15 Nov 202412.69%−0.94
31 Oct 202413.63%−2.51
15 Oct 202416.14%+0.90
30 Sep 202415.24%−0.62
13 Sep 202415.86%−1.23
30 Aug 202417.09%+0.48
15 Aug 202416.61%+1.26
31 Jul 202415.35%−1.35
15 Jul 202416.70%−0.33
28 Jun 202417.03%+0.11
14 Jun 202416.92%−0.03
31 May 202416.95%−0.23
15 May 202417.18%−0.05
30 Apr 202417.23%−0.19
15 Apr 202417.42%+1.48
28 Mar 202415.94%+0.34
15 Mar 202415.60%+6.20
29 Feb 20249.40%−0.51
15 Feb 20249.91%+1.09
31 Jan 20248.82%+0.54
12 Jan 20248.28%−0.34
29 Dec 20238.62%−0.34
15 Dec 20238.96%+0.45
30 Nov 20238.51%−0.17
15 Nov 20238.68%+0.18
31 Oct 20238.50%−0.14
13 Oct 20238.64%−0.25
29 Sep 20238.89%+0.99
15 Sep 20237.90%+0.37
31 Aug 20237.53%+0.53
15 Aug 20237.00%−0.75
31 Jul 20237.75%−0.27
14 Jul 20238.02%+1.94
30 Jun 20236.08%−0.15
15 Jun 20236.23%+0.11
31 May 20236.12%−0.62
15 May 20236.74%−0.92
28 Apr 20237.66%+0.66
14 Apr 20237.00%+0.10
31 Mar 20236.90%+1.22
15 Mar 20235.68%−0.74
28 Feb 20236.42%−0.25
15 Feb 20236.67%−0.20
31 Jan 20236.87%−0.46
13 Jan 20237.33%+0.32
30 Dec 20227.01%+0.58
15 Dec 20226.43%−0.07
30 Nov 20226.50%−0.43
15 Nov 20226.93%+0.15
31 Oct 20226.78%−0.12
14 Oct 20226.90%−0.37
30 Sep 20227.27%−0.06
15 Sep 20227.33%+0.93
31 Aug 20226.40%−0.71
15 Aug 20227.11%−0.44
29 Jul 20227.55%+1.08
15 Jul 20226.47%+0.63
30 Jun 20225.84%−0.89
15 Jun 20226.73%−0.44
31 May 20227.17%+0.31
13 May 20226.86%+0.44
29 Apr 20226.42%+0.27
14 Apr 20226.15%+0.01
31 Mar 20226.14%+0.79
15 Mar 20225.35%−1.12
28 Feb 20226.47%+0.19
15 Feb 20226.28%+0.99
31 Jan 20225.29%−0.01
14 Jan 20225.30%+0.35
31 Dec 20214.95%−1.04
15 Dec 20215.99%+0.18
30 Nov 20215.81%−0.61
15 Nov 20216.42%−0.79
29 Oct 20217.21%−0.05
15 Oct 20217.26%+0.18
30 Sep 20217.08%−0.63
15 Sep 20217.71%−0.71
31 Aug 20218.42%−0.09
13 Aug 20218.51%−0.55
30 Jul 20219.06%+0.35
15 Jul 20218.71%−0.82
30 Jun 20219.53%+2.77
15 Jun 20216.76%−2.17
28 May 20218.93%−0.08
14 May 20219.01%+0.50
30 Apr 20218.51%+0.79
15 Apr 20217.72%−0.17
31 Mar 20217.89%+3.54
15 Mar 20214.35%–

Newest first. Scroll inside the table for earlier dates, back to 15 Mar 2021.

Frequently asked questions

How shorted is MP Materials Corp. right now?
18.85% of MP Materials Corp.'s (MP) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 151st 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 MP'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 MP's days to cover?
7.09 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.