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HowShorted

How shorted is ESS Tech, Inc.? GWH

8.05%
of shares outstanding reported short · settlement date 31 Jul 2026
vs previous report
+1.70
5 reports (~10 weeks)
+2.30
days to cover
3.28
Aggregate net short position time series for ESS Tech, Inc.

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 ESS Tech, Inc. days to cover

Fails to deliver

The SEC's fails-to-deliver figure for GWH: 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
14,443
10 Sep 2026
Highest in window
1,076,756
14 Oct 2025
Days with a balance
106
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for ESS Tech, 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 1.1M shares.

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History

Full reported short interest history
Settlement dateShort %Change
31 Jul 20268.05%+1.70
15 Jul 20266.35%−0.07
30 Jun 20266.42%+1.22
15 Jun 20265.20%−0.48
29 May 20265.68%−0.07
15 May 20265.75%−0.07
30 Apr 20265.82%−1.64
15 Apr 20267.46%+1.47
31 Mar 20265.99%+0.67
13 Mar 20265.32%+1.22
27 Feb 20264.10%−0.34
13 Feb 20264.44%−0.27
30 Jan 20264.71%+2.22
15 Jan 20262.49%+0.04
31 Dec 20252.45%−0.41
15 Dec 20252.86%−0.68
28 Nov 20253.54%−2.94
14 Nov 20256.48%−1.81
31 Oct 20258.29%+0.84
30 Sep 20257.45%+0.37
15 Sep 20257.08%−0.24
29 Aug 20257.32%+0.68
15 Aug 20256.64%−0.86
31 Jul 20257.50%−1.04
15 Jul 20258.54%+0.64
30 Jun 20257.90%−0.23
13 Jun 20258.13%+2.76
30 May 20255.37%+0.89
15 May 20254.48%+0.70
30 Apr 20253.78%+0.62
15 Apr 20253.16%0.00
31 Mar 20253.16%+0.16
14 Mar 20253.00%−0.64
28 Feb 20253.64%+0.50
14 Feb 20253.14%−0.27
31 Jan 20253.41%+0.04
15 Jan 20253.37%+0.14
31 Dec 20243.23%+0.24
13 Dec 20242.99%−0.53
29 Nov 20243.52%+0.59
15 Nov 20242.93%−0.92
15 Aug 20243.85%+0.17
31 Jul 20243.68%+0.45
15 Jul 20243.23%−1.60
28 Jun 20244.83%+0.22
14 Jun 20244.61%−1.24
31 May 20245.85%+0.88
15 May 20244.97%−0.55
30 Apr 20245.52%−0.69
15 Apr 20246.21%−0.94
28 Mar 20247.15%+0.37
15 Mar 20246.78%−0.07
29 Feb 20246.85%+0.53
15 Feb 20246.32%+0.29
31 Jan 20246.03%−0.58
12 Jan 20246.61%−0.80
29 Dec 20237.41%+1.03
15 Dec 20236.38%−0.20
30 Nov 20236.58%+0.24
15 Nov 20236.34%+0.19
31 Oct 20236.15%+0.43
13 Oct 20235.72%−0.19
29 Sep 20235.91%+0.76
15 Sep 20235.15%+0.09
31 Aug 20235.06%+0.19
15 Aug 20234.87%+0.11
31 Jul 20234.76%+0.33
14 Jul 20234.43%−0.26
30 Jun 20234.69%+0.19
15 Jun 20234.50%−0.57
31 May 20235.07%−0.55
15 May 20235.62%−0.51
28 Apr 20236.13%+0.12
14 Apr 20236.01%−0.06
31 Mar 20236.07%+0.48
15 Mar 20235.59%+0.05
28 Feb 20235.54%−0.37
15 Feb 20235.91%−0.98
31 Jan 20236.89%−0.28
13 Jan 20237.17%−0.20
30 Dec 20227.37%+0.21
15 Dec 20227.16%+0.48
30 Nov 20226.68%+0.35
15 Nov 20226.33%+0.33
31 Oct 20226.00%+0.49
14 Oct 20225.51%+0.32
30 Sep 20225.19%+1.25
15 Sep 20223.94%−0.38
31 Aug 20224.32%−0.33
15 Aug 20224.65%+0.36
29 Jul 20224.29%−0.36
15 Jul 20224.65%−0.06
30 Jun 20224.71%+1.29
15 Jun 20223.42%+0.29
31 May 20223.13%+0.10
13 May 20223.03%−0.35
29 Apr 20223.38%+0.23
14 Apr 20223.15%−0.10
31 Mar 20223.25%+0.65
15 Mar 20222.60%−0.09
28 Feb 20222.69%+0.51
15 Feb 20222.18%+0.51
31 Jan 20221.67%−0.29
14 Jan 20221.96%–

Newest first. Scroll inside the table for earlier dates, back to 14 Jan 2022.

Frequently asked questions

How shorted is ESS Tech, Inc. right now?
8.05% of ESS Tech, Inc.'s (GWH) shares outstanding were reported short for settlement date 31 Jul 2026, per FINRA's consolidated short interest report.
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 GWH'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 GWH's days to cover?
3.28 days for settlement date 31 Jul 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.