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HowShorted

How shorted is Glaukos Corporation? GKOS

#1,153most shorted US stockof 3,805 ranked stocks, more shorted than 69%

7.06%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.58
5 reports (~10 weeks)
−0.52
days to cover
5.71
Aggregate net short position time series for Glaukos Corporation

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 Glaukos Corporation 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
29 Jul 20268.01% 15 Jul 20266.15% 31 Jul 2026−1.86
29 Apr 20265.63% 15 Apr 20264.95% 30 Apr 2026−0.68
17 Feb 20264.70% 13 Feb 20265.00% 27 Feb 2026+0.30
13 Jan 20263.52% 31 Dec 20253.88% 15 Jan 2026+0.36
29 Oct 20254.20% 15 Oct 20255.13% 31 Oct 2025+0.93
30 Jul 20258.49% 15 Jul 20256.66% 31 Jul 2025−1.83
30 Apr 20255.75% 15 Apr 20255.87% 15 May 2025+0.12
20 Feb 20256.32% 14 Feb 20256.41% 28 Feb 2025+0.09

Fails to deliver

The SEC's fails-to-deliver figure for GKOS: 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
18
4 Sep 2026
Highest in window
27,832
17 Oct 2025
Days with a balance
56
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Glaukos Corporation 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 28K shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20267.06%+0.58
31 Aug 20266.48%−0.22
14 Aug 20266.70%+0.55
31 Jul 20266.15%−1.86
15 Jul 20268.01%+0.43
30 Jun 20267.58%+0.47
15 Jun 20267.11%+1.80
29 May 20265.31%−0.32
15 May 20265.63%+0.68
30 Apr 20264.95%−0.68
15 Apr 20265.63%+0.23
31 Mar 20265.40%+0.74
13 Mar 20264.66%−0.34
27 Feb 20265.00%+0.30
13 Feb 20264.70%+0.38
30 Jan 20264.32%+0.44
15 Jan 20263.88%+0.36
31 Dec 20253.52%−0.04
15 Dec 20253.56%−0.36
28 Nov 20253.92%−0.76
14 Nov 20254.68%−0.45
31 Oct 20255.13%+0.93
15 Oct 20254.20%−1.30
30 Sep 20255.50%−0.14
15 Sep 20255.64%−0.26
29 Aug 20255.90%−0.35
15 Aug 20256.25%−0.41
31 Jul 20256.66%−1.83
15 Jul 20258.49%−0.21
30 Jun 20258.70%+1.73
13 Jun 20256.97%+0.23
30 May 20256.74%+0.87
15 May 20255.87%−0.02
30 Apr 20255.89%+0.14
15 Apr 20255.75%−0.53
31 Mar 20256.28%−0.46
14 Mar 20256.74%+0.33
28 Feb 20256.41%+0.09
14 Feb 20256.32%+0.23
31 Jan 20256.09%+0.24
15 Jan 20255.85%+0.34
31 Dec 20245.51%+0.85
13 Dec 20244.66%−0.17
29 Nov 20244.83%−0.27
15 Nov 20245.10%+0.31
31 Oct 20244.79%+0.46
15 Oct 20244.33%−1.41
30 Sep 20245.74%+1.15
13 Sep 20244.59%−0.08
30 Aug 20244.67%+0.02
15 Aug 20244.65%−0.07
31 Jul 20244.72%−0.09
15 Jul 20244.81%−0.30
28 Jun 20245.11%−1.27
14 Jun 20246.38%+0.01
31 May 20246.37%−0.08
15 May 20246.45%−0.53
30 Apr 20246.98%+0.24
15 Apr 20246.74%−0.41
28 Mar 20247.15%−0.35
15 Mar 20247.50%−0.06
29 Feb 20247.56%+0.12
15 Feb 20247.44%−0.70
31 Jan 20248.14%−7.34
12 Jan 202415.48%+0.51
29 Dec 202314.97%+0.44
15 Dec 202314.53%+0.30
30 Nov 202314.23%+0.52
15 Nov 202313.71%+0.95
31 Oct 202312.76%+0.18
13 Oct 202312.58%−1.08
29 Sep 202313.66%+0.09
15 Sep 202313.57%+0.25
31 Aug 202313.32%+1.18
15 Aug 202312.14%+0.25
31 Jul 202311.89%−0.24
14 Jul 202312.13%−0.16
30 Jun 202312.29%+0.26
15 Jun 202312.03%+0.49
31 May 202311.54%+0.17
15 May 202311.37%+0.70
28 Apr 202310.67%+0.10
14 Apr 202310.57%−0.11
31 Mar 202310.68%+0.51
15 Mar 202310.17%+0.28
28 Feb 20239.89%+0.51
15 Feb 20239.38%+0.05
31 Jan 20239.33%−0.04
13 Jan 20239.37%+0.21
30 Dec 20229.16%+0.45
15 Dec 20228.71%+0.07
30 Nov 20228.64%+0.04
15 Nov 20228.60%−0.15
31 Oct 20228.75%+0.01
14 Oct 20228.74%+0.44
30 Sep 20228.30%+0.32
15 Sep 20227.98%+2.63
31 Aug 20225.35%+1.97
15 Aug 20223.38%−0.02
29 Jul 20223.40%+0.06
15 Jul 20223.34%−0.58
30 Jun 20223.92%+0.46
15 Jun 20223.46%+0.17
31 May 20223.29%−0.51
13 May 20223.80%−0.43
29 Apr 20224.23%−0.18
14 Apr 20224.41%+1.25
31 Mar 20223.16%−0.58
15 Mar 20223.74%−0.06
28 Feb 20223.80%−0.08
15 Feb 20223.88%+0.05
31 Jan 20223.83%+0.67
14 Jan 20223.16%+0.53
31 Dec 20212.63%+0.11
15 Dec 20212.52%−0.27
30 Nov 20212.79%−0.35
15 Nov 20213.14%+0.03
29 Oct 20213.11%+0.21
15 Oct 20212.90%−1.33
30 Sep 20214.23%−0.21
15 Sep 20214.44%−0.49
31 Aug 20214.93%+0.56
13 Aug 20214.37%−1.54
30 Jul 20215.91%−2.84
15 Jul 20218.75%+0.62
30 Jun 20218.13%+0.04
15 Jun 20218.09%+0.04
28 May 20218.05%−0.62
14 May 20218.67%−0.69
30 Apr 20219.36%−0.38
15 Apr 20219.74%+0.31
31 Mar 20219.43%−0.13
15 Mar 20219.56%+0.12
26 Feb 20219.44%+0.22
12 Feb 20219.22%−0.07
29 Jan 20219.29%−0.30
15 Jan 20219.59%−0.61
31 Dec 202010.20%+0.03
15 Dec 202010.17%−0.42
30 Nov 202010.59%−0.52
13 Nov 202011.11%−1.70
30 Oct 202012.81%−1.20
15 Oct 202014.01%−0.90
30 Sep 202014.91%−0.12
15 Sep 202015.03%+0.72
31 Aug 202014.31%−0.59
14 Aug 202014.90%−0.68
31 Jul 202015.58%+0.01
15 Jul 202015.57%+0.67
30 Jun 202014.90%+1.26
15 Jun 202013.64%+0.02
29 May 202013.62%+2.27
15 May 202011.35%−0.13
30 Apr 202011.48%+0.15
15 Apr 202011.33%+0.82
31 Mar 202010.51%+0.06
13 Mar 202010.45%−5.36
28 Feb 202015.81%−2.36
14 Feb 202018.17%−0.99
31 Jan 202019.16%+0.43
15 Jan 202018.73%+1.71
31 Dec 201917.02%+0.39
13 Dec 201916.63%+0.15
29 Nov 201916.48%−1.73
15 Nov 201918.21%−1.46
31 Oct 201919.67%+2.12
15 Oct 201917.55%−0.60
30 Sep 201918.15%+1.17
13 Sep 201916.98%+1.61
30 Aug 201915.37%+2.73
15 Aug 201912.64%+2.21
31 Jul 201910.43%+1.47
15 Jul 20198.96%+0.51
28 Jun 20198.45%+0.65
14 Jun 20197.80%+0.40
31 May 20197.40%+0.05
15 May 20197.35%−0.55
30 Apr 20197.90%−0.35
15 Apr 20198.25%−1.07
29 Mar 20199.32%−1.71
15 Mar 201911.03%−0.21
28 Feb 201911.24%−1.00
15 Feb 201912.24%−0.25
31 Jan 201912.49%−0.59
15 Jan 201913.08%+0.05
31 Dec 201813.03%+1.37
14 Dec 201811.66%+1.21
30 Nov 201810.45%+0.48
15 Nov 20189.97%−0.43
31 Oct 201810.40%−0.70
15 Oct 201811.10%−0.71
28 Sep 201811.81%+0.45
14 Sep 201811.36%−0.90
31 Aug 201812.26%−2.67
15 Aug 201814.93%+0.29
31 Jul 201814.64%+0.16
13 Jul 201814.48%+0.36
29 Jun 201814.12%+0.52
15 Jun 201813.60%+0.46
31 May 201813.14%−0.34
15 May 201813.48%−1.14
30 Apr 201814.62%+0.52
13 Apr 201814.10%−1.04
29 Mar 201815.14%+2.34
15 Mar 201812.80%−1.31
28 Feb 201814.11%+0.37
15 Feb 201813.74%+0.35
31 Jan 201813.39%+0.83
12 Jan 201812.56%+1.11
29 Dec 201711.45%–

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

Frequently asked questions

How shorted is Glaukos Corporation right now?
7.06% of Glaukos Corporation's (GKOS) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 1,153rd 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 GKOS'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 GKOS's days to cover?
5.71 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.