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HowShorted

LMUB short interest NYSE Arca

iShares Long-Term National Mun. 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
456,619
vs previous settlement
+325,127 (+247.3%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for LMUB: 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
5,854
14 Sep 2026
Highest in window
13,555,096
13 Mar 2026
Days with a balance
182
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for iShares Long-Term National Mun 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 14M shares.

History

Every FINRA settlement we hold for LMUB, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 2026456,619+325,1271.00
31 Aug 2026131,492−36,3891.00
14 Aug 2026167,881+130,9241.10
31 Jul 202636,957−69,2671.00
15 Jul 2026106,224−24,6891.00
30 Jun 2026130,913−25,2861.00
15 Jun 2026156,199+84,2971.06
29 May 202671,902−27,6551.00
15 May 202699,557−68,9571.00
30 Apr 2026168,514−36,9621.16
15 Apr 2026205,476−77,2831.00
31 Mar 2026282,759−13,284,2851.00
13 Mar 202613,567,044+13,561,4954.41
27 Feb 20265,549+551.01
13 Feb 20265,494+4,2131.46
30 Jan 20261,281−9411.00
15 Jan 20262,222+1,4231.00
31 Dec 2025799−5,6031.00
15 Dec 20256,402−5,0701.17
28 Nov 202511,472−3683.48
14 Nov 202511,840+7779.14
31 Oct 202511,063+2,9369.21
15 Oct 20258,127+2685.24
30 Sep 20257,859−5042.49
15 Sep 20258,363+6,4511.87
29 Aug 20251,912−1801.00
15 Aug 20252,092−1,8211.00
31 Jul 20253,913+9191.87
15 Jul 20252,994−7,4071.16
30 Jun 202510,401+5,5954.38
13 Jun 20254,806+1,3413.82
30 May 20253,465+1,4503.04
15 May 20252,015−4,3901.00
30 Apr 20256,405+6,0561.00
15 Apr 2025349−7,4961.00
31 Mar 20257,845–1.52

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

Questions

Frequently asked questions

What is LMUB's short interest?
456,619 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 325,127 from the previous settlement.
Why is there no percentage for LMUB?
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 LMUB'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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