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HowShorted

UCO short interest NYSE Arca

ProShares Ultra Bloomberg Crud. 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
2,169,818
vs previous settlement
+444,050 (+25.7%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for UCO 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 UCO days to cover

Fails to deliver

The SEC's fails-to-deliver figure for UCO: 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
43,820
14 Sep 2026
Highest in window
1,563,659
10 Mar 2026
Days with a balance
190
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for ProShares Ultra Bloomberg Crud 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 1.6M shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20262,169,818+444,0501.00
31 Aug 20261,725,768โˆ’248,5061.00
14 Aug 20261,974,274โˆ’128,9291.00
31 Jul 20262,103,203+70,2881.00
15 Jul 20262,032,915+194,1311.00
30 Jun 20261,838,784โˆ’268,2411.00
15 Jun 20262,107,025โˆ’69,1121.00
29 May 20262,176,137+44,8861.00
15 May 20262,131,251โˆ’61,8371.00
30 Apr 20262,193,088โˆ’1,225,0631.00
15 Apr 20263,418,151+1,114,3921.00
31 Mar 20262,303,759โˆ’2,531,5001.00
13 Mar 20264,835,259+3,206,7051.00
27 Feb 20261,628,554+773,0031.00
13 Feb 2026855,551โˆ’466,9751.00
30 Jan 20261,322,526โˆ’257,2221.00
15 Jan 20261,579,748+814,7031.00
31 Dec 2025765,045โˆ’602,4371.00
15 Dec 20251,367,482+45,6941.00
28 Nov 20251,321,788โˆ’219,3071.00
14 Nov 20251,541,095+551,5251.00
31 Oct 2025989,570โˆ’743,2991.00
15 Oct 20251,732,869+772,1171.00
30 Sep 2025960,752โˆ’119,5191.00
15 Sep 20251,080,271+164,7501.00
29 Aug 2025915,521โˆ’242,6271.00
15 Aug 20251,158,148+99,2941.00
31 Jul 20251,058,854โˆ’115,3981.00
15 Jul 20251,174,252โˆ’39,0901.00
30 Jun 20251,213,342+350,7581.00
13 Jun 2025862,584โˆ’321,6881.00
30 May 20251,184,272+529,6241.00
15 May 2025654,648โˆ’530,4301.00
30 Apr 20251,185,078+156,5231.00
15 Apr 20251,028,555โˆ’29,5311.00
31 Mar 20251,058,086โˆ’403,1101.00
14 Mar 20251,461,196โˆ’565,7421.00
28 Feb 20252,026,938+197,2891.33
14 Feb 20251,829,649+337,4671.25
31 Jan 20251,492,182โˆ’15,2161.17
15 Jan 20251,507,398+221,5201.00
31 Dec 20241,285,878โˆ’6,7141.06
13 Dec 20241,292,592+106,5551.00
29 Nov 20241,186,037โˆ’23,4081.00
15 Nov 20241,209,445โˆ’360,2331.00
31 Oct 20241,569,678โˆ’404,2851.00
15 Oct 20241,973,963+1,172,5201.00
30 Sep 2024801,443โˆ’163,4591.00
13 Sep 2024964,902+194,0631.00
30 Aug 2024770,839โˆ’221,5571.00
15 Aug 2024992,396+23,5451.00
31 Jul 2024968,851โˆ’27,1281.00
15 Jul 2024995,979+119,6071.00
28 Jun 2024876,372โˆ’78,6321.00
14 Jun 2024955,004โˆ’69,3691.00
31 May 20241,024,373+56,1401.00
15 May 2024968,233+74,5391.00
30 Apr 2024893,694โˆ’1,006,2471.00
15 Apr 20241,899,941+23,2241.26
28 Mar 20241,876,717+48,7541.80
15 Mar 20241,827,963+174,8401.12
29 Feb 20241,653,123+43,5451.00
15 Feb 20241,609,578+660,6331.00
31 Jan 2024948,945โˆ’272,9731.00
12 Jan 20241,221,918+272,4971.00
29 Dec 2023949,421โˆ’482,7401.00
15 Dec 20231,432,161+351,9271.00
30 Nov 20231,080,234+18,1621.00
15 Nov 20231,062,072สณโˆ’259,1411.00
31 Oct 20231,321,213+80,1151.00
13 Oct 20231,241,098โˆ’682,6731.00
29 Sep 20231,923,771+745,4531.11
15 Sep 20231,178,318+376,2141.00
31 Aug 2023802,104โˆ’199,5491.00
15 Aug 20231,001,653โˆ’26,7801.00
31 Jul 20231,028,433+304,2591.00
14 Jul 2023724,174โˆ’1,738,8781.00
30 Jun 20232,463,052+1,797,9791.00
15 Jun 2023665,073+99,4931.00
31 May 2023565,580สณโˆ’147,9401.00
15 May 2023713,520โˆ’230,2491.00
28 Apr 2023943,769+116,8171.00
14 Apr 2023826,952+73,7851.00
31 Mar 2023753,167โˆ’422,0171.00
15 Mar 20231,175,184+5,2561.00
28 Feb 20231,169,928+176,9401.00
15 Feb 2023992,988+301,8211.00
31 Jan 2023691,167โˆ’159,4591.00
13 Jan 2023850,626+2,4571.00
30 Dec 2022848,169โˆ’67,2781.00
15 Dec 2022915,447+221,3301.00
30 Nov 2022694,117+56,0201.00
15 Nov 2022638,097+5,8221.00
31 Oct 2022632,275โˆ’56,3841.00
14 Oct 2022688,659+175,5091.00
30 Sep 2022513,150+64,3441.00
15 Sep 2022448,806โˆ’26,1301.00
31 Aug 2022474,936+6,9421.00
15 Aug 2022467,994โˆ’5531.00
29 Jul 2022468,547โˆ’40,8891.00
15 Jul 2022509,436+44,6201.00
30 Jun 2022464,816โˆ’142,9851.00
15 Jun 2022607,801โˆ’167,2611.00
31 May 2022775,062+623,2231.00
13 May 2022151,839โˆ’15,3141.00
29 Apr 2022167,153โˆ’34,6471.00
14 Apr 2022201,800โˆ’9,2721.00
31 Mar 2022211,072โˆ’89,0561.00
15 Mar 2022300,128โˆ’24,2451.00
28 Feb 2022324,373+19,1621.00
15 Feb 2022305,211+34,6501.00
31 Jan 2022270,561โˆ’78,7181.00
14 Jan 2022349,279+143,6641.00
31 Dec 2021205,615โˆ’1,7431.00
15 Dec 2021207,358โˆ’159,8951.00
30 Nov 2021367,253+110,3911.00
15 Nov 2021256,862+4,6111.00
29 Oct 2021252,251โˆ’67,0241.00
15 Oct 2021319,275+7,6141.00
30 Sep 2021311,661+28,2601.00
15 Sep 2021283,401+13,4511.00
31 Aug 2021269,950โˆ’90,8941.00
13 Aug 2021360,844โˆ’46,8311.00
30 Jul 2021407,675+59,3341.00
15 Jul 2021348,341โˆ’24,7941.00
30 Jun 2021373,135+43,8691.00
15 Jun 2021329,266+86,4151.00
28 May 2021242,851โˆ’21,8011.00
14 May 2021264,652โˆ’118,7991.00
30 Apr 2021383,451โˆ’260,2891.00
15 Apr 2021643,740+122,8061.00
31 Mar 2021520,934โˆ’29,8881.00
15 Mar 2021550,822โˆ’173,8331.00
26 Feb 2021724,655โˆ’366,0481.00
12 Feb 20211,090,703โˆ’118,5151.00
29 Jan 20211,209,218โˆ’97,6721.00
15 Jan 20211,306,890โˆ’6,0201.00
31 Dec 20201,312,910โˆ’19,4801.00
15 Dec 20201,332,390โˆ’28,1271.00
30 Nov 20201,360,517+36,2601.00
13 Nov 20201,324,257โˆ’188,9251.00
30 Oct 20201,513,182+333,5871.00
15 Oct 20201,179,595+130,5641.00
30 Sep 20201,049,031โˆ’378,5691.00
15 Sep 20201,427,600+279,3101.00
31 Aug 20201,148,290โˆ’113,5131.00
14 Aug 20201,261,803+320,7361.00
31 Jul 2020941,067โˆ’529,2921.00
15 Jul 20201,470,359+555,5941.00
30 Jun 2020914,765+3,7571.00
15 Jun 2020911,008โˆ’1,026,6611.00
29 May 20201,937,669+116,8131.00
15 May 20201,820,856+455,2371.00
30 Apr 20201,365,619โˆ’7,173,8861.00
15 Apr 20208,539,505+4,108,1351.00
31 Mar 20204,431,370+649,1651.00
13 Mar 20203,782,205+1,456,1451.00
28 Feb 20202,326,060+221,8311.00
14 Feb 20202,104,229+579,9821.00
31 Jan 20201,524,247โˆ’417,4101.00
15 Jan 20201,941,657+701,3661.00
31 Dec 20191,240,291+130,6531.25
13 Dec 20191,109,638+68,6131.00
29 Nov 20191,041,025โˆ’81,0081.00
15 Nov 20191,122,033โˆ’340,9041.00
31 Oct 20191,462,937โˆ’473,0441.00
15 Oct 20191,935,981+301,4561.00
30 Sep 20191,634,525+226,9581.00
13 Sep 20191,407,567โˆ’365,9351.00
30 Aug 20191,773,502+83,9311.00
15 Aug 20191,689,571+639,0031.00
31 Jul 20191,050,568โˆ’195,2321.00
15 Jul 20191,245,800+254,6361.00
28 Jun 2019991,164โˆ’912,7711.00
14 Jun 20191,903,935+753,7831.00
31 May 20191,150,152+131,5451.00
15 May 20191,018,607โˆ’147,9381.00
30 Apr 20191,166,545+52,6451.00
15 Apr 20191,113,900+225,7981.00
29 Mar 2019888,102โˆ’1,6461.00
15 Mar 2019889,748โˆ’272,7721.00
28 Feb 20191,162,520+189,2821.00
15 Feb 2019973,238+123,6011.00
31 Jan 2019849,637โˆ’43,0681.00
15 Jan 2019892,705โˆ’588,8821.00
31 Dec 20181,481,587+349,8481.00
14 Dec 20181,131,739โˆ’40,8221.00
30 Nov 20181,172,561โˆ’75,1991.00
15 Nov 20181,247,760+494,1281.00
31 Oct 2018753,632โˆ’167,9761.00
15 Oct 2018921,608โˆ’93,2271.00
28 Sep 20181,014,835+102,8521.00
14 Sep 2018911,983โˆ’19,9041.00
31 Aug 2018931,887โˆ’83,5511.00
15 Aug 20181,015,438โˆ’189,3451.00
31 Jul 20181,204,783โˆ’91,0511.00
13 Jul 20181,295,834+308,3151.00
29 Jun 2018987,519โˆ’164,4441.00
15 Jun 20181,151,963โˆ’121,5941.00
31 May 20181,273,557โˆ’602,0231.00
15 May 20181,875,580โˆ’118,1501.00
30 Apr 20181,993,730+249,6211.00
13 Apr 20181,744,109โˆ’164,4281.00
29 Mar 20181,908,537โˆ’237,7941.00
15 Mar 20182,146,331+199,8921.00
28 Feb 20181,946,439โˆ’369,0821.00
15 Feb 20182,315,521โˆ’1,364,7821.00
31 Jan 20183,680,303โˆ’9,854,9761.40
12 Jan 201813,535,279+988,2894.47
29 Dec 201712,546,990โ€“5.12

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

Questions

Frequently asked questions

What is UCO's short interest?
2,169,818 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 444,050 from the previous settlement.
Why is there no percentage for UCO?
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 UCO'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.

Ranked companies with a percentage: most shorted US stocks. Other funds by shares short and days to cover: most shorted ETFs. Other symbols with counts only: shares short without a percentage. Browse by name: US companies A to Z.