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HowShorted

WNTR short interest NYSE Arca

YieldMax MSTR Short Option Inc. 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
87,133
vs previous settlement
−93,764 (-51.8%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for WNTR: 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
3,692
14 Sep 2026
Highest in window
563,871
19 Feb 2026
Days with a balance
128
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for YieldMax MSTR Short Option 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 564K shares.

History

Every FINRA settlement we hold for WNTR, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202687,133−93,7641.00
31 Aug 2026180,897−9,5661.00
14 Aug 2026190,463+12,0931.43
31 Jul 2026178,370−71,2191.29
15 Jul 2026249,589+4,9901.48
30 Jun 2026244,599+49,8441.38
15 Jun 2026194,755+46,1071.09
29 May 2026148,648−5,9561.45
15 May 2026154,604+4,5061.14
30 Apr 2026150,098−84,2071.00
15 Apr 2026234,305+92,3091.02
31 Mar 2026141,996−39,0941.00
13 Mar 2026181,090−84,5691.00
27 Feb 2026265,659+60,3881.03
13 Feb 2026205,271+48,4861.00
30 Jan 2026156,785−65,7861.00
15 Jan 2026222,571−4,1051.00
31 Dec 2025226,676+82,1261.60
15 Dec 2025144,550−22,9631.00
28 Nov 2025167,513−33,5021.00
14 Nov 2025201,015+74,4321.25
31 Oct 2025126,583+102,7321.14
15 Oct 202523,851−82,3991.00
30 Sep 2025106,250+91,3331.00
15 Sep 202514,917−24,4761.00
29 Aug 202539,393+2,3591.00
15 Aug 202537,034−2,9041.00
31 Jul 202539,938+26,6851.00
15 Jul 202513,253−43,4091.00
30 Jun 202556,662+52,5271.00
13 Jun 20254,135−5,2851.00
30 May 20259,420+1,4841.00
15 May 20257,936+5,5891.00
30 Apr 20252,347−5,8571.00
15 Apr 20258,204−165,4931.00
31 Mar 2025173,697–6.65

Scroll inside the table for earlier settlements, back to 31 Mar 2025.

Questions

Frequently asked questions

What is WNTR's short interest?
87,133 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 93,764 from the previous settlement.
Why is there no percentage for WNTR?
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 WNTR'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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