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HowShorted

EFU short interest NYSE Arca

ProShares Trust UltraShort MSC. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: exchange-traded product: its share count floats with creation and redemption.

Shares short
5,068
vs previous settlement
+1,216 (+31.6%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for EFU shares short

Days to cover

FINRA's own figure: reported shares short divided by the security's average daily trading volume, published alongside each settlement.

Aggregate net short position time series for EFU days to cover

Fails to deliver

The SEC's fails-to-deliver figure for EFU: 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
5,805
8 Sep 2026
Highest in window
53,269
24 Mar 2026
Days with a balance
94
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for ProShares Trust UltraShort MSC 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 53K shares.

History

Every FINRA settlement we hold for EFU, newest first. สณ marks a figure FINRA itself flagged as revised.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20265,068+1,2161.00
31 Aug 20263,852+1161.00
14 Aug 20263,736+1,2221.00
31 Jul 20262,514โˆ’1,1491.00
15 Jul 20263,663+1,3401.00
30 Jun 20262,323โˆ’1,7131.00
15 Jun 20264,036+2,4061.00
29 May 20261,630โˆ’37,2891.00
15 May 202638,919+28,5643.60
30 Apr 202610,355+5,2121.00
15 Apr 20265,143โˆ’5,1791.00
31 Mar 202610,322โˆ’26,9151.00
13 Mar 202637,237+35,1511.71
27 Feb 20262,086+6831.00
13 Feb 20261,403โˆ’2391.05
30 Jan 20261,642โˆ’761.00
15 Jan 20261,718+1931.00
31 Dec 20251,525โˆ’3031.00
15 Dec 20251,828+5601.00
28 Nov 20251,268โˆ’7381.00
14 Nov 20252,006โˆ’2511.00
31 Oct 20252,257โˆ’1,8711.00
15 Oct 20254,128+3,3631.69
30 Sep 2025765โˆ’2071.00
15 Sep 2025972โˆ’1281.21
29 Aug 20251,100+641.54
15 Aug 20251,036+2561.00
31 Jul 2025780+5161.00
15 Jul 2025264โˆ’2821.00
30 Jun 2025546โˆ’1,9701.00
13 Jun 20252,516+2025.59
30 May 20252,314+3341.08
15 May 20251,980โˆ’2,1231.26
30 Apr 20254,103+163.59
15 Apr 20254,087โˆ’1,6341.00
31 Mar 20255,721+1232.13
14 Mar 20255,598โˆ’3341.00
28 Feb 20255,932โˆ’2,1711.13
14 Feb 20258,103โˆ’6,0601.26
31 Jan 202514,163โˆ’1,1534.16
15 Jan 202515,316โˆ’1081.25
31 Dec 202415,424+7335.07
13 Dec 202414,691โˆ’80211.79
29 Nov 202415,493+1237.55
15 Nov 202415,370+1,7673.24
31 Oct 202413,603โˆ’2,0043.38
15 Oct 202415,607+2,8481.00
30 Sep 202412,759โˆ’1,6871.31
13 Sep 202414,446+9441.00
30 Aug 202413,502โˆ’1,3493.33
15 Aug 202414,851+1,9033.52
31 Jul 202412,948+1,3549.32
15 Jul 202411,594+805.46
28 Jun 202411,514+2,1002.31
14 Jun 20249,414+3081.95
31 May 20249,106โˆ’707.12
15 May 20249,176โˆ’1,8873.27
30 Apr 202411,063โˆ’1,5971.80
15 Apr 202412,660โˆ’9,8242.37
28 Mar 202422,48402.84
15 Mar 202422,484โˆ’566.50
29 Feb 202422,540โˆ’48,2893.24
15 Feb 202470,829+60,3598.23
31 Jan 202410,470โˆ’6,0906.05
12 Jan 202416,560+4,6823.05
29 Dec 202311,878โˆ’8,5642.16
15 Dec 202320,442+2,6351.73
30 Nov 202317,807+10,5243.11
15 Nov 20237,283โˆ’18,4481.00
31 Oct 202325,731+14,5962.83
13 Oct 202311,135โˆ’13,2541.00
29 Sep 202324,389+7,3023.03
15 Sep 202317,087+2,1561.30
31 Aug 202314,931โˆ’4,3961.00
15 Aug 202319,327+3,4861.29
31 Jul 202315,841โˆ’6671.59
14 Jul 202316,508+8,2031.00
30 Jun 20238,305+1,5381.09
15 Jun 20236,767โˆ’28,4121.04
31 May 202335,179+21,7606.20
15 May 202313,419+4,3242.21
28 Apr 20239,095โˆ’6181.00
14 Apr 20239,713+3,3421.00
31 Mar 20236,371โˆ’7,7291.25
15 Mar 202314,100โˆ’10,8981.22
28 Feb 202324,998โˆ’3,9432.11
15 Feb 202328,941+15,7875.69
31 Jan 202313,154+7,6141.00
13 Jan 20235,540+2,3361.00
30 Dec 20223,204โˆ’16,6701.00
15 Dec 202219,874โˆ’8,5621.00
30 Nov 202228,436โˆ’49,5877.77
15 Nov 202278,023+13,9205.40
31 Oct 202264,103+21,7041.75
14 Oct 202242,399โˆ’4681.00
30 Sep 202242,867+41,7311.00
15 Sep 20221,136โˆ’2,9471.00
31 Aug 20224,083+1,6661.00
15 Aug 20222,417โˆ’2,2601.00
29 Jul 20224,677โˆ’2471.00
15 Jul 20224,924+4,6661.00
30 Jun 2022258โˆ’31.00
15 Jun 2022261โˆ’5,9011.00
31 May 20226,162+6,0431.37
13 May 2022119โˆ’8431.00
29 Apr 2022962โˆ’2,0961.00
14 Apr 20223,058โˆ’2521.00
31 Mar 20223,310โˆ’19,4991.00
15 Mar 202222,809+15,2551.06
28 Feb 20227,554+1,0311.05
15 Feb 20226,523+1,0491.31
31 Jan 20225,474โˆ’1,2051.00
14 Jan 20226,679+3232.48
31 Dec 20216,356โˆ’8012.25
15 Dec 20217,157+1,0581.20
30 Nov 20216,099+472.07
15 Nov 20216,052+3494.77
29 Oct 20215,703โˆ’1,1607.93
15 Oct 20216,863โˆ’1533.08
30 Sep 20217,016+3483.72
15 Sep 20216,668โˆ’8757.45
31 Aug 20217,543+7984.12
13 Aug 20216,745+1,6463.12
30 Jul 20215,099+4671.00
15 Jul 20214,632โˆ’6463.40
30 Jun 20215,278โˆ’2,1162.17
15 Jun 20217,394สณ+20712.20
28 May 20217,18709.36
14 May 20217,187โˆ’1167.21
30 Apr 20217,303โˆ’9579.87
15 Apr 20218,260โˆ’61016.69
31 Mar 20218,870โˆ’2137.44
15 Mar 20219,083+1,3663.37
26 Feb 20217,717+8426.13
12 Feb 20216,875+6005.00
29 Jan 20216,275+5428.04
15 Jan 20215,733+1,2486.66
31 Dec 20204,485โˆ’1188.86
15 Dec 20204,603โˆ’343.95
30 Nov 20204,637+8276.22
13 Nov 20203,810โˆ’6931.67
30 Oct 20204,503+1,4015.90
15 Oct 20203,102+4181.66
30 Sep 20202,684+4563.14
15 Sep 20202,228+1,1331.29
31 Aug 20201,095โˆ’1,5941.09
14 Aug 20202,689+1,9581.00
31 Jul 2020731โˆ’231.00
15 Jul 2020754โˆ’41.00
30 Jun 2020758+801.00
15 Jun 2020678+3421.00
29 May 2020336โˆ’3,9281.00
15 May 20204,264+3431.00
30 Apr 20203,921+4721.72
15 Apr 20203,449โˆ’1,4981.00
31 Mar 20204,947โˆ’1,7841.00
13 Mar 20206,731+4651.00
28 Feb 20206,266+6461.55
14 Feb 20205,620โˆ’2,3303.07
31 Jan 20207,950โˆ’1599.03
15 Jan 20208,109+9726.19
31 Dec 20197,137โˆ’8623.65
13 Dec 20197,999+69311.44
29 Nov 20197,306+6397.98
15 Nov 20196,667+26318.02
31 Oct 20196,404โˆ’67222.31
15 Oct 20197,076โˆ’7136.72
30 Sep 20197,789+2913.09
13 Sep 20197,498โˆ’4,5843.09
30 Aug 201912,082+3,3102.52
15 Aug 20198,772โˆ’6,1964.00
31 Jul 201914,968+3,23031.38
15 Jul 201911,738+4,2654.73
28 Jun 20197,473+8054.70
14 Jun 20196,668+1002.92
31 May 20196,568+507.36
15 May 20196,518+3003.53
30 Apr 20196,218โˆ’3257.57
15 Apr 20196,543+5572.56
29 Mar 20195,986โˆ’1,0558.93
15 Mar 20197,041+1,17011.49
28 Feb 20195,871โˆ’10615.05
15 Feb 20195,977+14811.98
31 Jan 20195,829+5521.44
15 Jan 20195,277โˆ’1,8342.00
31 Dec 20187,111+8021.00
14 Dec 20186,309โˆ’4,7431.44
30 Nov 201811,052+3,3181.90
15 Nov 20187,734โˆ’6261.97
31 Oct 20188,360+2,9781.87
15 Oct 20185,382+3573.50
28 Sep 20185,025โˆ’4994.78
14 Sep 20185,524โˆ’1006.28
31 Aug 20185,624+5856.62
15 Aug 20185,039+626.91
31 Jul 20184,977โˆ’263.97
13 Jul 20185,003โˆ’2,1071.79
29 Jun 20187,110+1,4401.59
15 Jun 20185,670+543.16
31 May 20185,616โˆ’4,0573.52
15 May 20189,673+1,41736.36
30 Apr 20188,256โˆ’1,04810.67
13 Apr 20189,304+1,29114.96
29 Mar 20188,013โˆ’15,6371.20
15 Mar 201823,650โˆ’2,8782.29
28 Feb 201826,528โˆ’1,4925.77
15 Feb 201828,020โˆ’14,6374.26
31 Jan 201842,657+2,15431.83
12 Jan 201840,503โˆ’96757.45
29 Dec 201741,470โ€“155.32

Scroll inside the table for earlier settlements, back to 29 Dec 2017.

Questions

Frequently asked questions

What is EFU's short interest?
5,068 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 1,216 from the previous settlement.
Why is there no percentage for EFU?
Because no defensible share count exists to divide by: exchange-traded product: its share count floats with creation and redemption. An exchange-traded product's share count changes every day as units are created and redeemed, so no filing gives a stable count to divide by. FINRA's shares-short figure is exact; a percentage of it would not be.
What is EFU's days to cover?
1.00 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume, published in the same file and shown verbatim. We hold no volume data ourselves.
Is this the short float?
No. This page shows FINRA's share count only. Short float divides that count by the public float, and short interest as we publish it elsewhere divides it by shares outstanding from SEC filings. Neither denominator is available for this line, so neither ratio is shown.
How often does this update?
FINRA member firms report short positions as of the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. We ingest each file the day it appears and re-read recent settlements for revisions.

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