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HowShorted

How shorted is SI-BONE, Inc.? SIBN

#401most shorted US stockof 3,805 ranked stocks, more shorted than 89%

13.20%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.65
5 reports (~10 weeks)
−0.28
days to cover
10.65
Aggregate net short position time series for SI-BONE, 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 SI-BONE, 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
3 Aug 202611.34% 31 Jul 202611.91% 14 Aug 2026+0.57
11 May 202610.46% 30 Apr 202612.86% 15 May 2026+2.40
23 Feb 20266.20% 13 Feb 20266.62% 27 Feb 2026+0.42
12 Jan 20265.60% 31 Dec 20255.98% 15 Jan 2026+0.38
10 Nov 20256.41% 31 Oct 20256.54% 14 Nov 2025+0.13
4 Aug 20254.33% 31 Jul 20254.76% 15 Aug 2025+0.43
5 May 20253.60% 30 Apr 20253.80% 15 May 2025+0.20
24 Feb 20252.56% 14 Feb 20253.01% 28 Feb 2025+0.45

Fails to deliver

The SEC's fails-to-deliver figure for SIBN: 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
3
14 Sep 2026
Highest in window
34,573
2 Dec 2025
Days with a balance
45
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for SI-BONE, 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 202613.20%+0.65
31 Aug 202612.55%+0.64
14 Aug 202611.91%+0.57
31 Jul 202611.34%−1.08
15 Jul 202612.42%−1.06
30 Jun 202613.48%+0.12
15 Jun 202613.36%+0.10
29 May 202613.26%+0.40
15 May 202612.86%+2.40
30 Apr 202610.46%−0.22
15 Apr 202610.68%+1.73
31 Mar 20268.95%+0.64
13 Mar 20268.31%+1.69
27 Feb 20266.62%+0.42
13 Feb 20266.20%+0.60
30 Jan 20265.60%−0.38
15 Jan 20265.98%+0.38
31 Dec 20255.60%0.00
15 Dec 20255.60%−0.48
28 Nov 20256.08%−0.46
14 Nov 20256.54%+0.13
31 Oct 20256.41%+0.25
15 Oct 20256.16%+0.58
30 Sep 20255.58%+0.69
15 Sep 20254.89%−0.12
29 Aug 20255.01%+0.25
15 Aug 20254.76%+0.43
31 Jul 20254.33%−0.08
15 Jul 20254.41%−0.19
30 Jun 20254.60%+0.52
13 Jun 20254.08%−0.28
30 May 20254.36%+0.56
15 May 20253.80%+0.20
30 Apr 20253.60%−0.01
15 Apr 20253.61%−0.09
31 Mar 20253.70%−0.52
14 Mar 20254.22%+1.21
28 Feb 20253.01%+0.45
14 Feb 20252.56%+0.14
31 Jan 20252.42%−0.27
15 Jan 20252.69%+0.01
31 Dec 20242.68%+0.11
13 Dec 20242.57%−0.08
29 Nov 20242.65%−0.38
15 Nov 20243.03%−0.82
31 Oct 20243.85%−0.72
15 Oct 20244.57%+0.51
30 Sep 20244.06%+0.11
13 Sep 20243.95%+0.22
30 Aug 20243.73%0.00
15 Aug 20243.73%−0.33
31 Jul 20244.06%−0.60
15 Jul 20244.66%−0.92
28 Jun 20245.58%−0.28
14 Jun 20245.86%−0.80
31 May 20246.66%−0.25
15 May 20246.91%−0.06
30 Apr 20246.97%+0.56
15 Apr 20246.41%+0.37
28 Mar 20246.04%−0.20
15 Mar 20246.24%+0.52
29 Feb 20245.72%+0.90
15 Feb 20244.82%+0.50
31 Jan 20244.32%+0.26
12 Jan 20244.06%+0.97
29 Dec 20233.09%+0.80
15 Dec 20232.29%−0.05
30 Nov 20232.34%+0.04
15 Nov 20232.30%+0.16
31 Oct 20232.14%−0.46
13 Oct 20232.60%+0.18
29 Sep 20232.42%+0.33
15 Sep 20232.09%+0.24
31 Aug 20231.85%−0.53
15 Aug 20232.38%−0.56
31 Jul 20232.94%+0.43
14 Jul 20232.51%+0.14
30 Jun 20232.37%+0.19
15 Jun 20232.18%−0.37
31 May 20232.55%+0.31
15 May 20232.24%−0.89
28 Apr 20233.13%−0.42
14 Apr 20233.55%+0.09
31 Mar 20233.46%+0.23
15 Mar 20233.23%−1.06
28 Feb 20234.29%+0.26
15 Feb 20234.03%−0.03
31 Jan 20234.06%−0.86
13 Jan 20234.92%−0.07
30 Dec 20224.99%+0.43
15 Dec 20224.56%−0.26
30 Nov 20224.82%+0.37
15 Nov 20224.45%−0.70
31 Oct 20225.15%+0.24
14 Oct 20224.91%−0.27
30 Sep 20225.18%+0.16
15 Sep 20225.02%−0.43
31 Aug 20225.45%+0.91
15 Aug 20224.54%−0.18
29 Jul 20224.72%−0.47
15 Jul 20225.19%+0.09
30 Jun 20225.10%−0.11
15 Jun 20225.21%+0.76
31 May 20224.45%+0.14
13 May 20224.31%+0.33
29 Apr 20223.98%+0.16
14 Apr 20223.82%+0.17
31 Mar 20223.65%−0.47
15 Mar 20224.12%+0.39
28 Feb 20223.73%+0.03
15 Feb 20223.70%−0.05
31 Jan 20223.75%+0.19
14 Jan 20223.56%−0.14
31 Dec 20213.70%−0.80
15 Dec 20214.50%+0.13
30 Nov 20214.37%+0.29
15 Nov 20214.08%+0.13
29 Oct 20213.95%−0.05
15 Oct 20214.00%+0.06
30 Sep 20213.94%+0.82
15 Sep 20213.12%+0.20
31 Aug 20212.92%+0.80
13 Aug 20212.12%−1.30
30 Jul 20213.42%−0.11
15 Jul 20213.53%+0.34
30 Jun 20213.19%−0.07
15 Jun 20213.26%−0.19
28 May 20213.45%+0.02
14 May 20213.43%−0.10
30 Apr 20213.53%−0.13
15 Apr 20213.66%−0.21
31 Mar 20213.87%+1.61
15 Mar 20212.26%+0.16
26 Feb 20212.10%0.00
12 Feb 20212.10%+0.09
29 Jan 20212.01%+0.39
15 Jan 20211.62%−0.32
31 Dec 20201.94%+0.33
15 Dec 20201.61%+0.32
30 Nov 20201.29%+0.07
13 Nov 20201.22%+0.10
30 Oct 20201.12%−0.28
15 Oct 20201.40%−0.16
30 Sep 20201.56%−2.03
14 Aug 20203.59%−0.78
31 Jul 20204.37%+0.81
15 Jul 20203.56%+1.26
30 Jun 20202.30%+1.06
15 Jun 20201.24%−0.21
29 May 20201.45%+0.39
15 May 20201.06%−0.15
30 Apr 20201.21%+0.22
15 Apr 20200.99%−0.38
31 Mar 20201.37%−0.84
13 Mar 20202.21%−0.50
28 Feb 20202.71%−0.07
14 Feb 20202.78%+0.21
31 Jan 20202.57%−0.32
15 Jan 20202.89%−0.19
31 Dec 20193.08%−0.04
13 Dec 20193.12%−0.22
29 Nov 20193.34%−0.48
15 Nov 20193.82%+0.51
31 Oct 20193.31%−0.04
15 Oct 20193.35%–

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

Frequently asked questions

How shorted is SI-BONE, Inc. right now?
13.20% of SI-BONE, Inc.'s (SIBN) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 401st 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 SIBN'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 SIBN's days to cover?
10.65 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.