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HowShorted

MUA short interest NYSE

Blackrock Muni Assets Fund, In. 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
58,845
vs previous settlement
โˆ’767,748 (-92.9%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for MUA: 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
2,799
11 Sep 2026
Highest in window
419,932
26 Aug 2026
Days with a balance
121
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Blackrock Muni Assets Fund, In 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 420K shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202658,845โˆ’767,7481.00
31 Aug 2026826,593โˆ’1,058,6012.24
14 Aug 20261,885,194+325,6286.38
31 Jul 20261,559,566+1,514,7354.42
15 Jul 202644,831+18,3901.00
30 Jun 202626,441+10,8971.00
15 Jun 202615,544โˆ’9,3841.00
29 May 202624,928โˆ’31,9041.00
15 May 202656,832+39,2671.00
30 Apr 202617,565โˆ’6,2711.00
15 Apr 202623,836โˆ’13,6571.00
31 Mar 202637,493โˆ’8,0661.00
13 Mar 202645,559+1,7441.00
27 Feb 202643,815โˆ’132,0271.00
13 Feb 2026175,842+72,3361.77
30 Jan 2026103,506+55,8441.07
15 Jan 202647,662+7,3421.00
31 Dec 202540,320โˆ’20,5271.00
15 Dec 202560,847+46,2581.00
28 Nov 202514,589โˆ’13,7841.00
14 Nov 202528,373โˆ’30,5771.00
31 Oct 202558,950+29,6401.00
15 Oct 202529,310โˆ’54,4801.00
30 Sep 202583,790โˆ’21,2531.00
15 Sep 2025105,043+34,3481.02
29 Aug 202570,695โˆ’8,2721.00
15 Aug 202578,967โˆ’31,2081.00
31 Jul 2025110,175+67,1931.00
15 Jul 202542,982โˆ’4,9491.00
30 Jun 202547,931+32,3891.00
13 Jun 202515,542โˆ’12,9621.00
30 May 202528,504โˆ’4,5061.00
15 May 202533,010+13,3931.00
30 Apr 202519,617+9,7811.00
15 Apr 20259,836โˆ’19,0841.00
31 Mar 202528,920+3,1571.00
14 Mar 202525,763+11,6591.00
28 Feb 202514,104โˆ’5,7301.00
14 Feb 202519,834โˆ’4,9371.00
31 Jan 202524,771โˆ’12,9811.00
15 Jan 202537,752โˆ’13,1741.00
31 Dec 202450,926+11,4351.00
13 Dec 202439,491โˆ’8111.00
29 Nov 202440,302โˆ’13,6251.00
15 Nov 202453,927+18,2821.00
31 Oct 202435,645โˆ’11,9581.00
15 Oct 202447,603โˆ’24,9181.00
30 Sep 202472,521+24,6611.00
13 Sep 202447,860โˆ’9031.00
30 Aug 202448,763+26,5281.00
15 Aug 202422,235โˆ’39,9621.00
31 Jul 202462,197โˆ’25,4281.00
15 Jul 202487,625+36,6861.56
28 Jun 202450,939โˆ’11,7921.01
14 Jun 202462,731+7,5871.00
31 May 202455,144โˆ’46,3601.00
15 May 2024101,504โˆ’14,3921.10
30 Apr 2024115,896โˆ’19,5001.19
15 Apr 2024135,396+18,0271.96
28 Mar 2024117,369โˆ’11,9891.25
15 Mar 2024129,358โˆ’40,0531.40
29 Feb 2024169,411+10,5182.55
15 Feb 2024158,893โˆ’49,2611.99
31 Jan 2024208,154โˆ’12,0592.65
12 Jan 2024220,213+126,7911.92
29 Dec 202393,422+7,2711.00
15 Dec 202386,151+64,1351.00
30 Nov 202322,016+2,4831.00
15 Nov 202319,533โˆ’2,3241.00
31 Oct 202321,857+4,8681.00
13 Oct 202316,989โˆ’7201.00
29 Sep 202317,709+3,3921.00
15 Sep 202314,317+7,3071.00
31 Aug 20237,010โˆ’1,6471.00
15 Aug 20238,657โˆ’12,0011.00
31 Jul 202320,658+9,9141.00
14 Jul 202310,744+6,8011.00
30 Jun 20233,943โˆ’2971.00
15 Jun 20234,240โˆ’8,6641.00
31 May 202312,904+5,6791.00
15 May 20237,225+4,6191.00
28 Apr 20232,606โˆ’8361.00
14 Apr 20233,442โˆ’12,2311.00
31 Mar 202315,673โˆ’7,1431.00
15 Mar 202322,816โˆ’34,1921.00
28 Feb 202357,008+20,3411.00
15 Feb 202336,667โˆ’8,3851.00
31 Jan 202345,052โˆ’60,9631.00
13 Jan 2023106,015+50,1201.00
30 Dec 202255,895+46,7491.00
15 Dec 20229,146โˆ’16,2401.00
30 Nov 202225,386+3,4931.00
15 Nov 202221,893+7,5591.00
31 Oct 202214,334+11,4951.00
14 Oct 20222,839โˆ’5,8931.00
30 Sep 20228,732โˆ’23,6551.00
15 Sep 202232,387โˆ’8,3001.00
31 Aug 202240,687+19,3681.00
15 Aug 202221,319โˆ’1,1991.00
29 Jul 202222,518โˆ’25,8501.00
15 Jul 202248,368โˆ’53,8251.00
30 Jun 2022102,193+79,6351.00
15 Jun 202222,558โˆ’2,2571.00
31 May 202224,815+7,2821.00
13 May 202217,533โˆ’6,2171.00
29 Apr 202223,750+17,6531.00
14 Apr 20226,097+3491.00
31 Mar 20225,748โˆ’6,7091.00
15 Mar 202212,457+2,9971.00
28 Feb 20229,460โˆ’6921.00
15 Feb 202210,152+5521.00
31 Jan 20229,600โˆ’4,5441.00
14 Jan 202214,144+5,3491.00
31 Dec 20218,795โˆ’54,3661.00
15 Dec 202163,161+6,7861.32
30 Nov 202156,375โˆ’4,2891.60
15 Nov 202160,664+57,1271.24
29 Oct 20213,537โˆ’9,0741.00
15 Oct 202112,611โˆ’1,2591.00
30 Sep 202113,870โˆ’35,4781.00
15 Sep 202149,348+25,1801.33
31 Aug 202124,168โˆ’3,0021.00
13 Aug 202127,170โˆ’1,4981.00
30 Jul 202128,668โˆ’31,7291.00
15 Jul 202160,397โˆ’22,2191.89
30 Jun 202182,616โˆ’5971.85
15 Jun 202183,213+16,2261.86
28 May 202166,987+37,3321.93
14 May 202129,655โˆ’18,9021.00
30 Apr 202148,557+16,1111.28
15 Apr 202132,446โˆ’10,4791.00
31 Mar 202142,925+23,2381.00
15 Mar 202119,687+12,9961.00
26 Feb 20216,691โˆ’18,1461.00
12 Feb 202124,837โˆ’4,1051.00
29 Jan 202128,942+21,5841.00
15 Jan 20217,358โˆ’3,6521.00
31 Dec 202011,010โˆ’15,6271.00
15 Dec 202026,637โˆ’12,3901.00
30 Nov 202039,027+30,4761.00
13 Nov 20208,551โˆ’12,7771.00
30 Oct 202021,328โˆ’4,2711.00
15 Oct 202025,599โˆ’2,2201.00
30 Sep 202027,819โˆ’1,0021.00
15 Sep 202028,821+2,2951.00
31 Aug 202026,526โˆ’1,1971.00
14 Aug 202027,723+9,0461.00
31 Jul 202018,677โˆ’9351.00
15 Jul 202019,612โˆ’8,4461.00
30 Jun 202028,058โˆ’17,6471.00
15 Jun 202045,705โˆ’17,4961.05
29 May 202063,201+4,4641.24
15 May 202058,737โˆ’15,4251.20
30 Apr 202074,162+53,4661.18
15 Apr 202020,696โˆ’17,0341.00
31 Mar 202037,730+27,0741.00
13 Mar 202010,656โˆ’13,8261.00
28 Feb 202024,482โˆ’10,4471.00
14 Feb 202034,929+20,0461.00
31 Jan 202014,883โˆ’30,6411.00
15 Jan 202045,524+34,3671.15
31 Dec 201911,157โˆ’4,5141.00
13 Dec 201915,671+8,8731.00
29 Nov 20196,798โˆ’20,0861.00
15 Nov 201926,884+6,7421.00
31 Oct 201920,142โˆ’8,5101.00
15 Oct 201928,652+4,4931.00
30 Sep 201924,159โˆ’15,9831.00
13 Sep 201940,142โˆ’7,9231.03
30 Aug 201948,065โˆ’7,2871.33
15 Aug 201955,352โˆ’21,2531.40
31 Jul 201976,605โˆ’10,7302.04
15 Jul 201987,335โˆ’15,1272.33
28 Jun 2019102,462+17,3952.75
14 Jun 201985,067โˆ’31,2721.97
31 May 2019116,339โˆ’1063.50
15 May 2019116,445+10,9502.55
30 Apr 2019105,495+17,2971.67
15 Apr 201988,198+1,0111.83
29 Mar 201987,187+26,1401.73
15 Mar 201961,047+2,7212.11
28 Feb 201958,326+4,3571.09
15 Feb 201953,969โˆ’6,4251.36
31 Jan 201960,394+12,4411.28
15 Jan 201947,953+24,4841.00
31 Dec 201823,469โˆ’11,5501.00
14 Dec 201835,019+14,2281.00
30 Nov 201820,791+7,2221.00
15 Nov 201813,569โˆ’32,4671.00
31 Oct 201846,036+41,9351.00
15 Oct 20184,101โˆ’401.00
28 Sep 20184,141โˆ’14,3981.00
14 Sep 201818,539+7,0401.00
31 Aug 201811,499โˆ’11,0151.00
15 Aug 201822,514+13,6741.00
31 Jul 20188,840โˆ’10,0561.00
13 Jul 201818,896โˆ’1421.00
29 Jun 201819,038+16,7731.00
15 Jun 20182,265โˆ’2,2381.00
31 May 20184,503โˆ’1,0831.00
15 May 20185,586+4,5051.00
30 Apr 20181,081โˆ’3,7281.00
13 Apr 20184,809โˆ’6441.00
29 Mar 20185,453+1,9801.00
15 Mar 20183,473โˆ’9,6281.00
28 Feb 201813,101+6,4601.00
15 Feb 20186,641โˆ’1,9541.00
31 Jan 20188,595โˆ’51,3831.00
12 Jan 201859,978สณโˆ’34,7631.48
29 Dec 201794,741โ€“2.71

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

Questions

Frequently asked questions

What is MUA's short interest?
58,845 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 767,748 from the previous settlement.
Why is there no percentage for MUA?
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 MUA'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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