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HowShorted

How shorted is Inogen, Inc? INGN

#1,636most shorted US stockof 3,805 ranked stocks, more shorted than 57%

5.15%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
−0.36
5 reports (~10 weeks)
+1.36
days to cover
5.14
Aggregate net short position time series for Inogen, 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 Inogen, 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 20264.65% 31 Jul 20265.42% 14 Aug 2026+0.77
7 May 20263.87% 30 Apr 20262.96% 15 May 2026−0.91
24 Feb 20263.58% 13 Feb 20264.45% 27 Feb 2026+0.87
12 Jan 20262.64% 31 Dec 20252.84% 15 Jan 2026+0.20
5 Nov 20252.52% 31 Oct 20252.69% 14 Nov 2025+0.17
7 Aug 20253.32% 31 Jul 20253.88% 15 Aug 2025+0.56
7 May 20254.33% 30 Apr 20254.10% 15 May 2025−0.23
25 Feb 20252.80% 14 Feb 20253.14% 28 Feb 2025+0.34

Fails to deliver

The SEC's fails-to-deliver figure for INGN: 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
278
10 Sep 2026
Highest in window
16,405
26 Feb 2026
Days with a balance
22
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Inogen, 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 16K shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20265.15%−0.36
31 Aug 20265.51%+0.09
14 Aug 20265.42%+0.77
31 Jul 20264.65%+0.76
15 Jul 20263.89%+0.10
30 Jun 20263.79%+0.49
15 Jun 20263.30%−0.18
29 May 20263.48%+0.52
15 May 20262.96%−0.91
30 Apr 20263.87%+0.19
15 Apr 20263.68%−0.45
31 Mar 20264.13%−0.16
13 Mar 20264.29%−0.16
27 Feb 20264.45%+0.87
13 Feb 20263.58%+0.57
30 Jan 20263.01%+0.17
15 Jan 20262.84%+0.20
31 Dec 20252.64%−0.18
15 Dec 20252.82%+0.05
28 Nov 20252.77%+0.08
14 Nov 20252.69%+0.17
31 Oct 20252.52%−0.19
15 Oct 20252.71%0.00
30 Sep 20252.71%−0.13
15 Sep 20252.84%−0.46
29 Aug 20253.30%−0.58
15 Aug 20253.88%+0.56
31 Jul 20253.32%−0.35
15 Jul 20253.67%−0.10
30 Jun 20253.77%−0.26
13 Jun 20254.03%−0.04
30 May 20254.07%−0.03
15 May 20254.10%−0.23
30 Apr 20254.33%+0.51
15 Apr 20253.82%+1.04
31 Mar 20252.78%−0.54
14 Mar 20253.32%+0.18
28 Feb 20253.14%+0.34
14 Feb 20252.80%−0.55
31 Jan 20253.35%+0.27
15 Jan 20253.08%+0.08
31 Dec 20243.00%−0.20
13 Dec 20243.20%−0.14
29 Nov 20243.34%+0.21
15 Nov 20243.13%−0.35
31 Oct 20243.48%−0.45
15 Oct 20243.93%−0.16
30 Sep 20244.09%−0.02
13 Sep 20244.11%−0.20
30 Aug 20244.31%−1.38
15 Aug 20245.69%−0.04
31 Jul 20245.73%−0.49
15 Jul 20246.22%+0.01
28 Jun 20246.21%+0.05
14 Jun 20246.16%+0.01
31 May 20246.15%−0.36
15 May 20246.51%−2.00
30 Apr 20248.51%+0.70
15 Apr 20247.81%+0.57
28 Mar 20247.24%−0.79
15 Mar 20248.03%−0.07
29 Feb 20248.10%−0.35
15 Feb 20248.45%+0.39
31 Jan 20248.06%+1.44
12 Jan 20246.62%+0.75
29 Dec 20235.87%−1.03
15 Dec 20236.90%+0.65
30 Nov 20236.25%−0.40
15 Nov 20236.65%+2.27
31 Oct 20234.38%+0.99
13 Oct 20233.39%+0.38
29 Sep 20233.01%+0.25
15 Sep 20232.76%+0.64
31 Aug 20232.12%+0.14
15 Aug 20231.98%+0.22
31 Jul 20231.76%−1.16
14 Jul 20232.92%−0.46
30 Jun 20233.38%−3.76
15 Jun 20237.14%+1.75
31 May 20235.39%+0.23
15 May 20235.16%+0.07
28 Apr 20235.09%+0.02
14 Apr 20235.07%+0.60
31 Mar 20234.47%−0.38
15 Mar 20234.85%+0.55
28 Feb 20234.30%−0.55
15 Feb 20234.85%+0.22
31 Jan 20234.63%−0.36
13 Jan 20234.99%+0.15
30 Dec 20224.84%+0.64
15 Dec 20224.20%+0.18
30 Nov 20224.02%+0.41
15 Nov 20223.61%−0.32
31 Oct 20223.93%+0.65
14 Oct 20223.28%+0.03
30 Sep 20223.25%+0.13
15 Sep 20223.12%−0.86
31 Aug 20223.98%+0.81
15 Aug 20223.17%−0.44
29 Jul 20223.61%−0.24
15 Jul 20223.85%−0.05
30 Jun 20223.90%+0.02
15 Jun 20223.88%−0.05
31 May 20223.93%−0.15
13 May 20224.08%+0.35
29 Apr 20223.73%+0.56
14 Apr 20223.17%−0.04
31 Mar 20223.21%−0.65
15 Mar 20223.86%+0.65
28 Feb 20223.21%+0.13
15 Feb 20223.08%+0.42
31 Jan 20222.66%+0.28
14 Jan 20222.38%−0.33
31 Dec 20212.71%+0.29
15 Dec 20212.42%+0.20
30 Nov 20212.22%−0.25
15 Nov 20212.47%−0.24
29 Oct 20212.71%+0.02
15 Oct 20212.69%−0.26
30 Sep 20212.95%+0.81
15 Sep 20212.14%−0.33
31 Aug 20212.47%−0.23
13 Aug 20212.70%+0.81
30 Jul 20211.89%+0.20
15 Jul 20211.69%−0.06
30 Jun 20211.75%−0.46
15 Jun 20212.21%−0.22
28 May 20212.43%−0.14
14 May 20212.57%+0.42
30 Apr 20212.15%−0.35
15 Apr 20212.50%+0.05
31 Mar 20212.45%−0.08
15 Mar 20212.53%−1.20
26 Feb 20213.73%−0.44
12 Feb 20214.17%−0.97
29 Jan 20215.14%−0.04
15 Jan 20215.18%−0.11
31 Dec 20205.29%−0.77
15 Dec 20206.06%−0.48
30 Nov 20206.54%−1.46
13 Nov 20208.00%−1.44
30 Oct 20209.44%−0.21
15 Oct 20209.65%−0.58
30 Sep 202010.23%−0.44
15 Sep 202010.67%+0.15
31 Aug 202010.52%+0.11
14 Aug 202010.41%−0.68
31 Jul 202011.09%−0.41
15 Jul 202011.50%−0.28
30 Jun 202011.78%+0.18
15 Jun 202011.60%−1.22
29 May 202012.82%−0.83
15 May 202013.65%+2.99
30 Apr 202010.66%+1.46
15 Apr 20209.20%−0.43
31 Mar 20209.63%−0.69
13 Mar 202010.32%−0.49
28 Feb 202010.81%−0.74
14 Feb 202011.55%+0.75
31 Jan 202010.80%+1.09
15 Jan 20209.71%−0.51
31 Dec 201910.22%−0.42
13 Dec 201910.64%−0.76
29 Nov 201911.40%−0.48
15 Nov 201911.88%−0.57
31 Oct 201912.45%−1.31
15 Oct 201913.76%−0.84
30 Sep 201914.60%−0.03
13 Sep 201914.63%+0.36
30 Aug 201914.27%−0.05
15 Aug 201914.32%−5.35
31 Jul 201919.67%+1.13
15 Jul 201918.54%+2.41
28 Jun 201916.13%−1.94
14 Jun 201918.07%+2.40
31 May 201915.67%−0.64
15 May 201916.31%−3.03
30 Apr 201919.34%−0.24
15 Apr 201919.58%+0.57
29 Mar 201919.01%+0.30
15 Mar 201918.71%+0.47
28 Feb 201918.24%−0.92
15 Feb 201919.16%+4.11
31 Jan 201915.05%+1.09
15 Jan 201913.96%+0.77
31 Dec 201813.19%+0.04
14 Dec 201813.15%+1.07
30 Nov 201812.08%−0.86
15 Nov 201812.94%+4.77
31 Oct 20188.17%+0.74
15 Oct 20187.43%+2.25
28 Sep 20185.18%+0.74
14 Sep 20184.44%−0.06
31 Aug 20184.50%+0.06
15 Aug 20184.44%+0.63
31 Jul 20183.81%−0.13
13 Jul 20183.94%+0.16
29 Jun 20183.78%−0.44
15 Jun 20184.22%−0.03
31 May 20184.25%+0.64
15 May 20183.61%−0.38
30 Apr 20183.99%+0.04
13 Apr 20183.95%+0.22
29 Mar 20183.73%−0.17
15 Mar 20183.90%+0.47
28 Feb 20183.43%−0.07
15 Feb 20183.50%−0.52
31 Jan 20184.02%+0.22
12 Jan 20183.80%−0.27
29 Dec 20174.07%–

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

Frequently asked questions

How shorted is Inogen, Inc right now?
5.15% of Inogen, Inc's (INGN) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 1,636th 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 INGN'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 INGN's days to cover?
5.14 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.