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HowShorted

MUU short interest Nasdaq Global Market

Direxion Shares ETF Trust Dire. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: no SEC filer maps to the symbol (funds, notes, preferreds, warrants and foreign listings).

Shares short
19,509,812
vs previous settlement
−1,299,133 (-6.2%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for MUU: 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
330,587
14 Sep 2026
Highest in window
2,657,582
3 Aug 2026
Days with a balance
159
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Direxion Shares ETF Trust Dire 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 2.7M shares.

History

Every FINRA settlement we hold for MUU, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202619,509,812−1,299,1331.00
31 Aug 202620,808,945−2,310,1291.00
14 Aug 202623,119,074+856,7021.00
31 Jul 202622,262,372+12,772,4291.00
15 Jul 20269,489,943+8,526,9641.00
30 Jun 2026962,979+673,3431.00
15 Jun 2026289,636−276,3681.00
29 May 2026566,004+43,8431.00
15 May 2026522,161+8,0201.00
30 Apr 2026514,141+36,8971.00
15 Apr 2026477,244+76,7421.00
31 Mar 2026400,502−387,0041.00
13 Mar 2026787,506+4,2681.00
27 Feb 2026783,238+290,8091.00
13 Feb 2026492,429+159,7881.00
30 Jan 2026332,641+7,5161.00
15 Jan 2026325,125+99,0571.00
31 Dec 2025226,068−623,2281.00
15 Dec 2025849,296+289,9821.00
28 Nov 2025559,314+324,9031.00
14 Nov 2025234,411+105,8481.00
31 Oct 2025128,563+106,3051.00
15 Oct 202522,258−9,5951.00
30 Sep 202531,853−162,3831.00
15 Sep 2025194,236+10,9291.00
29 Aug 2025183,307+69,4721.00
15 Aug 2025113,835−183,4271.00
31 Jul 2025297,262+65,3391.00
15 Jul 2025231,923+103,1551.00
30 Jun 2025128,768−23,4911.00
13 Jun 2025152,259−55,0871.00
30 May 2025207,346+37,1341.00
15 May 2025170,212−31,4701.00
30 Apr 2025201,682−237,5761.00
15 Apr 2025439,258+181,3981.00
31 Mar 2025257,860+179,7581.00
14 Mar 202578,102−37,2391.00
28 Feb 2025115,341+107,8731.00
14 Feb 20257,468−136,3861.00
31 Jan 2025143,854+103,1861.00
15 Jan 202540,668+20,2441.00
31 Dec 202420,424+4,7401.00
13 Dec 202415,684−2,9641.00
29 Nov 202418,648+11,2701.00
15 Nov 20247,378+2,5681.00
31 Oct 20244,810−11,7951.00
15 Oct 202416,605–1.00

Scroll inside the table for earlier settlements, back to 15 Oct 2024.

Questions

Frequently asked questions

What is MUU's short interest?
19,509,812 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 1,299,133 from the previous settlement.
Why is there no percentage for MUU?
Because no defensible share count exists to divide by: no SEC filer maps to the symbol (funds, notes, preferreds, warrants and foreign listings). No SEC filer maps to this symbol in EDGAR's ticker file. That is the normal case for funds, exchange-traded notes, preferred shares, warrants, units and foreign listings, none of which file a share count we could divide by.
What is MUU'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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