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HowShorted

How shorted is MBIA Inc.? MBI

#1,500most shorted US stockof 3,805 ranked stocks, more shorted than 60%

5.57%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.09
5 reports (~10 weeks)
+0.94
days to cover
7.13
Aggregate net short position time series for MBIA 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 MBIA 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 20265.15% 31 Jul 20265.82% 14 Aug 2026+0.67
7 May 20263.85% 30 Apr 20264.02% 15 May 2026+0.17
26 Feb 20263.60% 13 Feb 20263.71% 27 Feb 2026+0.11
4 Nov 20253.93% 31 Oct 20253.79% 14 Nov 2025−0.14
6 Aug 20253.97% 31 Jul 20254.35% 15 Aug 2025+0.38
8 May 20253.78% 30 Apr 20254.00% 15 May 2025+0.22
27 Feb 20253.36% 14 Feb 20253.29% 28 Feb 2025−0.07
7 Nov 20243.95% 31 Oct 20244.14% 15 Nov 2024+0.19

Fails to deliver

The SEC's fails-to-deliver figure for MBI: 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
228
14 Sep 2026
Highest in window
98,909
22 Sep 2025
Days with a balance
54
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for MBIA 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 99K shares.

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Sector: Financials · By year: 2018 · 2019 · 2020 · 2021 · 2022 · 2023 · 2024 · 2025 · 2026

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20265.57%+0.09
31 Aug 20265.48%−0.34
14 Aug 20265.82%+0.67
31 Jul 20265.15%+0.34
15 Jul 20264.81%+0.18
30 Jun 20264.63%0.00
15 Jun 20264.63%+0.53
29 May 20264.10%+0.08
15 May 20264.02%+0.17
30 Apr 20263.85%+0.06
15 Apr 20263.79%−0.09
31 Mar 20263.88%+0.17
13 Mar 20263.71%0.00
27 Feb 20263.71%+0.11
13 Feb 20263.60%+0.10
30 Jan 20263.50%+0.20
15 Jan 20263.30%+0.43
31 Dec 20252.87%−0.29
15 Dec 20253.16%−0.18
28 Nov 20253.34%−0.45
14 Nov 20253.79%−0.14
31 Oct 20253.93%+0.09
15 Oct 20253.84%−0.19
30 Sep 20254.03%−0.13
15 Sep 20254.16%−0.44
29 Aug 20254.60%+0.25
15 Aug 20254.35%+0.38
31 Jul 20253.97%−0.19
15 Jul 20254.16%−0.05
30 Jun 20254.21%−0.09
13 Jun 20254.30%+0.04
30 May 20254.26%+0.26
15 May 20254.00%+0.22
30 Apr 20253.78%+0.04
15 Apr 20253.74%+0.07
31 Mar 20253.67%+0.13
14 Mar 20253.54%+0.25
28 Feb 20253.29%−0.07
14 Feb 20253.36%0.00
31 Jan 20253.36%+0.21
15 Jan 20253.15%−0.09
31 Dec 20243.24%−0.21
13 Dec 20243.45%+0.10
29 Nov 20243.35%−0.79
15 Nov 20244.14%+0.19
31 Oct 20243.95%−0.02
15 Oct 20243.97%+0.29
30 Sep 20243.68%−0.01
13 Sep 20243.69%+0.04
30 Aug 20243.65%+0.07
15 Aug 20243.58%−0.05
31 Jul 20243.63%−0.07
15 Jul 20243.70%−0.05
28 Jun 20243.75%+0.29
14 Jun 20243.46%+0.06
31 May 20243.40%−0.24
15 May 20243.64%+0.48
30 Apr 20243.16%+0.23
15 Apr 20242.93%−0.25
28 Mar 20243.18%−0.36
15 Mar 20243.54%−0.11
29 Feb 20243.65%−0.62
15 Feb 20244.27%−0.04
31 Jan 20244.31%−0.69
12 Jan 20245.00%−0.33
29 Dec 20235.33%+0.48
15 Dec 20234.85%+0.95
30 Nov 20233.90%−0.50
15 Nov 20234.40%+0.43
31 Oct 20233.97%+0.30
13 Oct 20233.67%+0.15
29 Sep 20233.52%+0.19
15 Sep 20233.33%+0.45
31 Aug 20232.88%0.00
15 Aug 20232.88%−0.04
31 Jul 20232.92%−0.32
14 Jul 20233.24%−0.01
30 Jun 20233.25%−0.54
15 Jun 20233.79%−1.13
31 May 20234.92%+0.50
15 May 20234.42%+0.84
28 Apr 20233.58%−0.62
14 Apr 20234.20%+0.25
31 Mar 20233.95%+2.03
15 Mar 20231.92%+0.79
28 Feb 20231.13%+0.09
15 Feb 20231.04%+0.08
31 Jan 20230.96%−0.22
13 Jan 20231.18%−0.13
30 Dec 20221.31%+0.03
15 Dec 20221.28%−0.54
30 Nov 20221.82%−0.20
15 Nov 20222.02%−0.44
31 Oct 20222.46%+0.09
14 Oct 20222.37%+0.04
30 Sep 20222.33%−0.37
15 Sep 20222.70%−0.06
31 Aug 20222.76%−0.24
15 Aug 20223.00%+0.38
29 Jul 20222.62%+0.01
15 Jul 20222.61%+0.02
30 Jun 20222.59%−1.53
15 Jun 20224.12%−1.27
31 May 20225.39%−0.91
13 May 20226.30%+0.36
29 Apr 20225.94%−0.12
14 Apr 20226.06%+0.14
31 Mar 20225.92%−0.02
15 Mar 20225.94%−0.35
28 Feb 20226.29%+0.11
15 Feb 20226.18%+0.51
31 Jan 20225.67%+0.77
14 Jan 20224.90%+0.09
31 Dec 20214.81%−0.39
15 Dec 20215.20%+0.36
30 Nov 20214.84%−0.18
15 Nov 20215.02%−0.58
29 Oct 20215.60%+0.30
15 Oct 20215.30%−0.82
30 Sep 20216.12%−0.25
15 Sep 20216.37%−0.73
31 Aug 20217.10%−0.22
13 Aug 20217.32%+0.86
30 Jul 20216.46%−0.50
15 Jul 20216.96%+0.04
30 Jun 20216.92%+0.05
15 Jun 20216.87%−0.12
28 May 20216.99%−1.27
14 May 20218.26%+0.65
30 Apr 20217.61%+0.28
15 Apr 20217.33%+0.06
31 Mar 20217.27%−0.38
15 Mar 20217.65%+2.53
26 Feb 20215.12%+0.70
12 Feb 20214.42%−0.49
29 Jan 20214.91%+1.03
15 Jan 20213.88%+0.05
31 Dec 20203.83%−1.44
15 Dec 20205.27%−0.33
30 Nov 20205.60%+0.25
13 Nov 20205.35%+0.12
30 Oct 20205.23%−0.34
15 Oct 20205.57%−1.60
30 Sep 20207.17%−0.33
15 Sep 20207.50%−1.68
31 Aug 20209.18%−1.98
14 Aug 202011.16%−0.38
31 Jul 202011.54%+2.37
15 Jul 20209.17%+0.04
30 Jun 20209.13%+0.68
15 Jun 20208.45%−0.11
29 May 20208.56%−1.30
15 May 20209.86%+0.94
30 Apr 20208.92%+0.57
15 Apr 20208.35%−0.92
31 Mar 20209.27%−1.76
13 Mar 202011.03%+0.21
28 Feb 202010.82%+0.44
14 Feb 202010.38%−0.56
31 Jan 202010.94%−1.02
15 Jan 202011.96%+0.13
31 Dec 201911.83%−0.43
13 Dec 201912.26%−0.17
29 Nov 201912.43%−0.77
15 Nov 201913.20%−0.74
31 Oct 201913.94%+0.01
15 Oct 201913.93%+0.71
30 Sep 201913.22%−1.28
13 Sep 201914.50%−0.28
30 Aug 201914.78%+0.86
15 Aug 201913.92%+0.64
31 Jul 201913.28%+0.47
15 Jul 201912.81%−0.63
28 Jun 201913.44%−0.47
14 Jun 201913.91%+0.83
31 May 201913.08%−0.40
15 May 201913.48%−0.18
30 Apr 201913.66%−0.80
15 Apr 201914.46%−0.97
29 Mar 201915.43%−0.25
15 Mar 201915.68%−0.63
28 Feb 201916.31%−0.10
15 Feb 201916.41%−0.32
31 Jan 201916.73%−3.01
15 Jan 201919.74%−0.37
31 Dec 201820.11%+0.18
14 Dec 201819.93%+0.08
30 Nov 201819.85%−0.10
15 Nov 201819.95%−1.27
31 Oct 201821.22%−0.66
15 Oct 201821.88%−1.33
28 Sep 201823.21%−0.39
14 Sep 201823.60%−0.10
31 Aug 201823.70%−0.01
15 Aug 201823.71%−1.84
31 Jul 201825.55%−0.81
13 Jul 201826.36%−0.12
29 Jun 201826.48%−1.91
15 Jun 201828.39%−0.76
31 May 201829.15%−1.41
15 May 201830.56%−0.60
30 Apr 201831.16%−0.96
13 Apr 201832.12%−1.08
29 Mar 201833.20%−1.27
15 Mar 201834.47%−0.09
28 Feb 201834.56%−3.25
15 Feb 201837.81%−1.04
31 Jan 201838.85%−0.82
12 Jan 201839.67%+0.81
29 Dec 201738.86%–

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

Frequently asked questions

How shorted is MBIA Inc. right now?
5.57% of MBIA Inc.'s (MBI) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 1,500th 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 MBI'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 MBI's days to cover?
7.13 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.