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HowShorted

How shorted is Spire Global, Inc.? SPIR

#793most shorted US stockof 3,805 ranked stocks, more shorted than 79%

9.17%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.19
5 reports (~10 weeks)
−1.51
days to cover
6.49
Aggregate net short position time series for Spire Global, 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 Spire Global, 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
12 Aug 202610.47% 31 Jul 20269.27% 14 Aug 2026−1.20
13 May 202616.34% 30 Apr 202611.08% 15 May 2026−5.26
18 Mar 202610.71% 13 Mar 202610.34% 31 Mar 2026−0.37
17 Dec 20259.58% 15 Dec 20259.94% 31 Dec 2025+0.36
4 Nov 20257.21% 31 Oct 20258.03% 14 Nov 2025+0.82
13 Aug 20257.80% 31 Jul 20258.36% 15 Aug 2025+0.56
14 May 202511.10% 30 Apr 202512.55% 15 May 2025+1.45
31 Mar 202510.72% 14 Mar 20259.65% 15 Apr 2025−1.07

Fails to deliver

The SEC's fails-to-deliver figure for SPIR: 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
13,181
11 Sep 2026
Highest in window
1,029,130
10 Apr 2026
Days with a balance
120
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Spire Global, 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 1.0M shares.

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Sector: Media & telecom

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20269.17%+0.19
31 Aug 20268.98%−0.29
14 Aug 20269.27%−1.20
31 Jul 202610.47%−0.13
15 Jul 202610.60%−0.08
30 Jun 202610.68%−0.36
15 Jun 202611.04%+0.51
29 May 202610.53%−0.55
15 May 202611.08%−5.26
30 Apr 202616.34%−1.29
15 Apr 202617.63%+7.29
31 Mar 202610.34%−0.37
13 Mar 202610.71%+0.26
27 Feb 202610.45%+0.42
13 Feb 202610.03%+0.31
30 Jan 20269.72%−0.52
15 Jan 202610.24%+0.30
31 Dec 20259.94%+0.36
15 Dec 20259.58%−0.24
28 Nov 20259.82%+1.79
14 Nov 20258.03%+0.82
31 Oct 20257.21%−0.26
15 Oct 20257.47%−1.15
30 Sep 20258.62%−0.17
15 Sep 20258.79%+1.06
29 Aug 20257.73%−0.63
15 Aug 20258.36%+0.56
31 Jul 20257.80%−1.03
15 Jul 20258.83%−0.52
30 Jun 20259.35%−0.19
13 Jun 20259.54%−1.60
30 May 202511.14%−1.41
15 May 202512.55%+1.45
30 Apr 202511.10%+1.45
15 Apr 20259.65%+0.71
31 Mar 20258.94%−1.78
14 Mar 202510.72%+0.43
28 Feb 202510.29%+1.07
14 Feb 20259.22%−0.49
15 Nov 20249.71%−2.58
31 Oct 202412.29%−1.19
15 Oct 202413.48%−1.60
30 Sep 202415.08%−1.42
13 Sep 202416.50%−0.75
30 Aug 202417.25%+0.99
15 Aug 202416.26%+0.49
31 Jul 202415.77%−0.35
15 Jul 202416.12%+5.06
28 Jun 202411.06%+0.95
14 Jun 202410.11%+0.80
31 May 20249.31%−0.14
15 May 20249.45%+1.73
30 Apr 20247.72%+2.56
15 Apr 20245.16%+0.78
28 Mar 20244.38%+0.40
15 Mar 20243.98%+1.11
29 Feb 20242.87%−0.17
15 Feb 20243.04%+0.40
31 Jan 20242.64%+0.27
12 Jan 20242.37%+0.63
29 Dec 20231.74%−0.47
15 Dec 20232.21%−1.01
30 Nov 20233.22%−0.59
15 Nov 20233.81%+0.41
31 Oct 20233.40%+2.14
15 Aug 20231.26%−0.46
31 Jul 20231.72%+0.03
14 Jul 20231.69%−0.04
30 Jun 20231.73%−2.15
15 Jun 20233.88%+0.40
31 May 20233.48%+0.56
15 May 20232.92%−0.35
28 Apr 20233.27%+0.02
14 Apr 20233.25%+0.29
31 Mar 20232.96%+0.14
15 Mar 20232.82%+0.31
28 Feb 20232.51%+0.45
15 Feb 20232.06%−0.44
31 Jan 20232.50%−0.19
13 Jan 20232.69%+0.37
30 Dec 20222.32%−0.38
15 Dec 20222.70%+0.01
30 Nov 20222.69%+0.14
15 Nov 20222.55%−0.26
31 Oct 20222.81%−0.23
14 Oct 20223.04%+0.09
30 Sep 20222.95%+0.29
15 Sep 20222.66%−0.07
31 Aug 20222.73%+0.14
15 Aug 20222.59%−0.10
29 Jul 20222.69%+1.85
15 Jun 20220.84%−0.04
31 May 20220.88%−0.06
13 May 20220.94%+0.06
29 Apr 20220.88%+0.02
14 Apr 20220.86%+0.05
31 Mar 20220.81%+0.16
15 Mar 20220.65%−0.14
28 Feb 20220.79%−0.26
15 Feb 20221.05%+0.23
31 Jan 20220.82%+0.20
14 Jan 20220.62%0.00
31 Dec 20210.62%+0.09
15 Dec 20210.53%−0.41
30 Nov 20210.94%−0.16
15 Nov 20211.10%–

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

Frequently asked questions

How shorted is Spire Global, Inc. right now?
9.17% of Spire Global, Inc.'s (SPIR) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 793rd 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 SPIR'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 SPIR's days to cover?
6.49 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.