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HowShorted

MMU short interest NYSE

Western Asset Managed Municipa. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: an SEC filer exists but no defensible share count is available yet.

Shares short
38,425
vs previous settlement
โˆ’16,817 (-30.4%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for MMU: 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
4
14 Sep 2026
Highest in window
31,481
26 Mar 2026
Days with a balance
60
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Western Asset Managed Municipa 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 31K shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202638,425โˆ’16,8171.00
31 Aug 202655,242+23,9531.00
14 Aug 202631,289โˆ’1,5621.00
31 Jul 202632,851โˆ’3391.00
15 Jul 202633,190โˆ’53,6431.00
30 Jun 202686,833+49,7991.00
15 Jun 202637,034โˆ’1,8441.00
29 May 202638,878โˆ’22,7651.00
15 May 202661,643+20,8491.00
30 Apr 202640,794โˆ’7,4081.00
15 Apr 202648,202+8,0261.00
31 Mar 202640,176โˆ’34,6901.00
13 Mar 202674,866+12,4421.00
27 Feb 202662,424+13,8971.00
13 Feb 202648,527โˆ’14,0091.00
30 Jan 202662,536+5,0101.00
15 Jan 202657,526+29,5121.00
31 Dec 202528,014โˆ’37,5351.00
15 Dec 202565,549โˆ’7,2041.00
28 Nov 202572,753+4,5471.00
14 Nov 202568,206โˆ’6,9901.00
31 Oct 202575,196+28,9531.00
15 Oct 202546,243+5,4311.00
30 Sep 202540,812+27,6481.00
15 Sep 202513,164โˆ’13,8901.00
29 Aug 202527,054โˆ’28,7031.00
15 Aug 202555,757โˆ’59,7241.00
31 Jul 2025115,481+64,9331.00
15 Jul 202550,548+4,5831.00
30 Jun 202545,965+8,7651.00
13 Jun 202537,200โˆ’6,1181.00
30 May 202543,318โˆ’28,9531.00
15 May 202572,271โˆ’29,4861.00
30 Apr 2025101,757+70,0421.00
15 Apr 202531,715โˆ’40,7891.00
31 Mar 202572,504+63,0491.00
14 Mar 20259,455โˆ’17,0751.00
28 Feb 202526,530โˆ’7,3151.00
14 Feb 202533,845โˆ’73,6191.00
31 Jan 2025107,464+8,4621.00
15 Jan 202599,002+12,1751.00
31 Dec 202486,827+60,9001.00
13 Dec 202425,927โˆ’27,6851.00
29 Nov 202453,612+6,5001.00
15 Nov 202447,112+16,5261.00
31 Oct 202430,586โˆ’9,3671.00
15 Oct 202439,953+8,6681.00
30 Sep 202431,285+4,1691.00
13 Sep 202427,116+2931.00
30 Aug 202426,823โˆ’22,7421.00
15 Aug 202449,565โˆ’6,4521.00
31 Jul 202456,017+18,7011.00
15 Jul 202437,316+1,0811.00
28 Jun 202436,235+7,3611.00
14 Jun 202428,874+3,8511.00
31 May 202425,023+3,9111.00
15 May 202421,112+3341.00
30 Apr 202420,778+5901.00
15 Apr 202420,188โˆ’75,9541.00
28 Mar 202496,142โˆ’32,7031.00
15 Mar 2024128,845+102,7231.00
29 Feb 202426,122+5,5211.00
15 Feb 202420,601โˆ’19,7061.00
31 Jan 202440,307+6,8991.00
12 Jan 202433,408โˆ’6,9581.00
29 Dec 202340,366โˆ’3051.00
15 Dec 202340,671+7,1621.00
30 Nov 202333,509โˆ’41,3411.00
15 Nov 202374,850+17,8441.00
31 Oct 202357,006+14,8581.00
13 Oct 202342,148+16,0331.00
29 Sep 202326,115+1,7841.00
15 Sep 202324,331+14,2931.00
31 Aug 202310,038+1,0101.00
15 Aug 20239,028โˆ’3,8381.00
31 Jul 202312,866+5,1331.00
14 Jul 20237,733+9931.00
30 Jun 20236,740โˆ’2621.00
15 Jun 20237,002+5891.00
31 May 20236,413+7371.00
15 May 20235,676โˆ’1,6891.00
28 Apr 20237,365+1,0831.00
14 Apr 20236,282โˆ’4,2861.00
31 Mar 202310,568+8,3481.00
15 Mar 20232,220โˆ’19,0761.00
28 Feb 202321,296+13,8031.00
15 Feb 20237,493+1,0331.00
31 Jan 20236,460โˆ’16,1841.00
13 Jan 202322,644+4,1151.00
30 Dec 202218,529+4,8761.00
15 Dec 202213,653+1741.00
30 Nov 202213,479+9,4881.00
15 Nov 20223,991โˆ’49,8521.00
31 Oct 202253,843+9,2911.00
14 Oct 202244,552+7,8891.00
30 Sep 202236,663+24,3521.00
15 Sep 202212,311+2,3481.00
31 Aug 20229,963+7441.00
15 Aug 20229,219โˆ’2,3331.00
29 Jul 202211,552โˆ’6,6651.00
15 Jul 202218,217โˆ’5,4941.00
30 Jun 202223,711+14,9661.00
15 Jun 20228,745+4,7961.00
31 May 20223,949โˆ’3,2261.00
13 May 20227,175โˆ’9,1921.00
29 Apr 202216,367โˆ’38,2261.00
14 Apr 202254,593โˆ’2,2491.00
31 Mar 202256,842+27,9111.00
15 Mar 202228,931โˆ’24,7771.00
28 Feb 202253,708+33,6021.00
15 Feb 202220,106โˆ’19,4811.00
31 Jan 202239,587โˆ’1,9231.00
14 Jan 202241,510+27,6341.00
31 Dec 202113,876+6,5931.00
15 Dec 20217,283+1,4361.00
30 Nov 20215,847โˆ’33,9271.00
15 Nov 202139,774+29,5801.00
29 Oct 202110,194โˆ’5,2021.00
15 Oct 202115,396โˆ’46,6971.00
30 Sep 202162,093+22,6341.00
15 Sep 202139,459+5,9361.00
31 Aug 202133,523+16,3301.00
13 Aug 202117,193+2,2201.00
30 Jul 202114,973+7,8661.00
15 Jul 20217,107โˆ’3,9151.00
30 Jun 202111,022โˆ’19,2271.00
15 Jun 202130,249สณ+14,1861.00
28 May 202116,063โˆ’10,0411.00
14 May 202126,104+5,5851.00
30 Apr 202120,519โˆ’6221.00
15 Apr 202121,141+12,7281.00
31 Mar 20218,413โˆ’5,8351.00
15 Mar 202114,248+11,5021.00
26 Feb 20212,746โˆ’46,2101.00
12 Feb 202148,956+31,6591.00
29 Jan 202117,297+6,0511.00
15 Jan 202111,246+3361.00
31 Dec 202010,910โˆ’32,3251.00
15 Dec 202043,235+18,8091.00
30 Nov 202024,426โˆ’35,5651.00
13 Nov 202059,991โˆ’24,2351.12
30 Oct 202084,226+78,8461.01
15 Oct 20205,380+1,0581.00
30 Sep 20204,322โˆ’6,9501.00
15 Sep 202011,272+9,5661.00
31 Aug 20201,706โˆ’6,6341.00
14 Aug 20208,340โˆ’3,0711.00
31 Jul 202011,411+5,8421.00
15 Jul 20205,569โˆ’6,7021.00
30 Jun 202012,271โˆ’2,4021.00
15 Jun 202014,673โˆ’6381.00
29 May 202015,311โˆ’5,1121.00
15 May 202020,423+10,8631.00
30 Apr 20209,560+5,5031.00
15 Apr 20204,057โˆ’34,0571.00
31 Mar 202038,114+31,1471.00
13 Mar 20206,967+4,9901.00
28 Feb 20201,977โˆ’9,2651.00
14 Feb 202011,242+6,3931.00
31 Jan 20204,849โˆ’3,1011.00
15 Jan 20207,950โˆ’5,6251.00
31 Dec 201913,575+3,6901.00
13 Dec 20199,885+2,6531.00
29 Nov 20197,232โˆ’5,2171.00
15 Nov 201912,449+4,2401.00
31 Oct 20198,209โˆ’5,9321.00
15 Oct 201914,141+10,6411.00
30 Sep 20193,500+3,1771.00
13 Sep 2019323โˆ’25,6321.00
30 Aug 201925,955โˆ’16,3881.00
15 Aug 201942,343+13,0401.00
31 Jul 201929,303+22,0301.00
15 Jul 20197,273โˆ’7441.00
28 Jun 20198,017โˆ’10,4771.00
14 Jun 201918,494โˆ’6,0841.00
31 May 201924,578+17,6681.00
15 May 20196,910+5,0341.00
30 Apr 20191,876โˆ’14,4551.00
15 Apr 201916,331+5,9291.00
29 Mar 201910,402โˆ’21,2431.00
15 Mar 201931,645โˆ’26,0291.00
28 Feb 201957,674+2,5071.00
15 Feb 201955,167โˆ’21,7671.03
31 Jan 201976,934โˆ’20,5431.00
15 Jan 201997,477โˆ’49,8861.00
31 Dec 2018147,363+62,1281.02
14 Dec 201885,235+4631.00
30 Nov 201884,772+27,1581.00
15 Nov 201857,614+55,4161.00
31 Oct 20182,198โˆ’6101.00
15 Oct 20182,808+3331.00
28 Sep 20182,475โˆ’2,4481.00
14 Sep 20184,923โˆ’1,0821.00
31 Aug 20186,005+3,3021.00
15 Aug 20182,703+1,3231.00
31 Jul 20181,380โˆ’14,4241.00
13 Jul 201815,804โˆ’1,1381.00
29 Jun 201816,942+14,5521.00
15 Jun 20182,390โˆ’531.00
31 May 20182,443+1,4611.00
15 May 2018982โˆ’1,4161.00
30 Apr 20182,398โˆ’5851.00
13 Apr 20182,983โˆ’8,2141.00
29 Mar 201811,197โˆ’42,1601.00
15 Mar 201853,357โˆ’19,0441.00
28 Feb 201872,401โˆ’17,2941.09
15 Feb 201889,695โˆ’54,7311.00
31 Jan 2018144,426โˆ’20,5931.74
12 Jan 2018165,019สณโˆ’15,6691.82
29 Dec 2017180,688โ€“1.62

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

Questions

Frequently asked questions

What is MMU's short interest?
38,425 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 16,817 from the previous settlement.
Why is there no percentage for MMU?
Because no defensible share count exists to divide by: an SEC filer exists but no defensible share count is available yet. The symbol maps to an SEC filer, but its share count cannot be used yet. A newly listed company needs two cover-page counts on file before the first is trusted; a split or an unexplained jump pauses publication until a fresh SEC count corroborates it; a secondary share class publishes under the company's primary line; and a foreign filer's short count is in depositary-share units. This page upgrades to a percentage automatically once a defensible count exists.
What is MMU'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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