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HowShorted

NMZ short interest NYSE

Nuveen Municipal High Income O. 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
149,994
vs previous settlement
+64,103 (+74.6%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for NMZ: 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
1,005
14 Sep 2026
Highest in window
71,788
19 Feb 2026
Days with a balance
136
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Nuveen Municipal High Income O 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 72K shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 2026149,994+64,1031.00
31 Aug 202685,891โˆ’8,3941.00
14 Aug 202694,285โˆ’111,0211.00
31 Jul 2026205,306+42,4431.00
15 Jul 2026162,863+92,8211.00
30 Jun 202670,042โˆ’72,0921.00
15 Jun 2026142,134โˆ’190,0121.00
29 May 2026332,146+261.00
15 May 2026332,120โˆ’144,1641.00
30 Apr 2026476,284โˆ’1,663,5121.00
15 Apr 20262,139,796+225,4345.02
31 Mar 20261,914,362+126,9234.31
13 Mar 20261,787,439+645,3443.55
27 Feb 20261,142,095โˆ’183,5622.46
13 Feb 20261,325,657+646,0462.76
30 Jan 2026679,611+109,2741.56
15 Jan 2026570,337+261,4991.51
31 Dec 2025308,838โˆ’527,5911.00
15 Dec 2025836,429+55,0891.82
28 Nov 2025781,340โˆ’9,0702.82
14 Nov 2025790,410+259,5752.48
31 Oct 2025530,835+171,9551.84
15 Oct 2025358,880+113,0791.27
30 Sep 2025245,801+176,1411.00
15 Sep 202569,660โˆ’74,9781.00
29 Aug 2025144,638โˆ’128,4621.00
15 Aug 2025273,100+20,6361.00
31 Jul 2025252,464+92,2871.00
15 Jul 2025160,177โˆ’32,1571.00
30 Jun 2025192,334+16,8381.00
13 Jun 2025175,496+2381.00
30 May 2025175,258โˆ’21,7951.00
15 May 2025197,053โˆ’36,5101.00
30 Apr 2025233,563+104,0101.00
15 Apr 2025129,553โˆ’43,1401.00
31 Mar 2025172,693โˆ’48,4961.00
14 Mar 2025221,189+109,1471.03
28 Feb 2025112,042โˆ’57,3261.00
14 Feb 2025169,368โˆ’214,8391.00
31 Jan 2025384,207+15,9511.69
15 Jan 2025368,256+124,3041.13
31 Dec 2024243,952โˆ’83,8201.00
13 Dec 2024327,772+172,4531.05
29 Nov 2024155,319โˆ’179,5921.00
15 Nov 2024334,911+147,9861.01
31 Oct 2024186,925โˆ’57,1281.00
15 Oct 2024244,053โˆ’16,7551.00
30 Sep 2024260,808+43,1391.00
13 Sep 2024217,669+37,0411.00
30 Aug 2024180,628+119,6041.00
15 Aug 202461,024+58,8941.00
31 Jul 20242,130โˆ’4,7181.00
15 Jul 20246,848โˆ’43,0601.00
28 Jun 202449,908โˆ’10,3731.00
14 Jun 202460,281+31,1151.00
31 May 202429,166โˆ’138,3531.00
15 May 2024167,519โˆ’99,3801.00
30 Apr 2024266,899โˆ’57,6561.28
15 Apr 2024324,555+181,2721.02
28 Mar 2024143,283+20,4491.00
15 Mar 2024122,834โˆ’35,4781.00
29 Feb 2024158,312+9,4521.00
15 Feb 2024148,860+16,8801.00
31 Jan 2024131,980+89,1651.00
12 Jan 202442,815+4,3131.00
29 Dec 202338,502+22,0491.00
15 Dec 202316,453โˆ’25,8041.00
30 Nov 202342,257โˆ’6,2401.00
15 Nov 202348,497สณ+5,4731.00
31 Oct 202343,024โˆ’17,4841.00
13 Oct 202360,508โˆ’49,5621.00
29 Sep 2023110,070โˆ’167,8901.00
15 Sep 2023277,960+120,1541.11
31 Aug 2023157,806โˆ’66,5751.00
15 Aug 2023224,381+53,3851.00
31 Jul 2023170,996โˆ’158,9901.00
14 Jul 2023329,986โˆ’42,0341.42
30 Jun 2023372,020โˆ’58,0361.68
15 Jun 2023430,056+320,6081.45
31 May 2023109,448+49,7261.00
15 May 202359,722โˆ’274,0111.00
28 Apr 2023333,733โˆ’30,4661.42
14 Apr 2023364,199+220,3341.44
31 Mar 2023143,865+82,5231.00
15 Mar 202361,342+21,7281.00
28 Feb 202339,614+17,9741.00
15 Feb 202321,640โˆ’32,3641.00
31 Jan 202354,004+42,6781.00
13 Jan 202311,326โˆ’8,3421.00
30 Dec 202219,668โˆ’23,8161.00
15 Dec 202243,484โˆ’60,2861.00
30 Nov 2022103,770โˆ’11,3971.00
15 Nov 2022115,167+49,0251.00
31 Oct 202266,142โˆ’33,7711.00
14 Oct 202299,913+15,1911.00
30 Sep 202284,722โˆ’85,8441.00
15 Sep 2022170,566โˆ’188,1961.00
31 Aug 2022358,762+76,6041.01
15 Aug 2022282,158+5801.00
29 Jul 2022281,578โˆ’184,2041.00
15 Jul 2022465,782+136,4461.01
30 Jun 2022329,336โˆ’30,0921.00
15 Jun 2022359,428+34,1901.00
31 May 2022325,238โˆ’6,0321.00
13 May 2022331,270โˆ’48,0731.00
29 Apr 2022379,343+276,1131.00
14 Apr 2022103,230โˆ’93,5741.00
31 Mar 2022196,804+19,6391.00
15 Mar 2022177,165+86,8611.00
28 Feb 202290,304โˆ’92,6841.00
15 Feb 2022182,988+52,0061.00
31 Jan 2022130,982โˆ’24,5321.00
14 Jan 2022155,514+20,0051.00
31 Dec 2021135,509+9,4361.00
15 Dec 2021126,073+16,8861.00
30 Nov 2021109,187+1,1761.00
15 Nov 2021108,011โˆ’19,8571.00
29 Oct 2021127,868โˆ’1,9071.00
15 Oct 2021129,775+10,8081.00
30 Sep 2021118,967โˆ’6,3851.00
15 Sep 2021125,352+16,8911.00
31 Aug 2021108,461โˆ’28,5131.00
13 Aug 2021136,974+6,5841.00
30 Jul 2021130,390โˆ’42,3681.00
15 Jul 2021172,758+81,7311.00
30 Jun 202191,027โˆ’10,4041.00
15 Jun 2021101,431โˆ’17,9721.00
28 May 2021119,403โˆ’22,2681.00
14 May 2021141,671+28,9561.00
30 Apr 2021112,715+9,4001.00
15 Apr 2021103,315โˆ’8,8991.00
31 Mar 2021112,214+11,2281.00
15 Mar 2021100,986+26,9061.00
26 Feb 202174,080โˆ’70,5031.00
12 Feb 2021144,583+22,6211.00
29 Jan 2021121,962+3,5091.00
15 Jan 2021118,453โˆ’1,6551.00
31 Dec 2020120,108โˆ’39,7251.00
15 Dec 2020159,833+16,1411.00
30 Nov 2020143,692+20,3831.00
13 Nov 2020123,309+3,9221.00
30 Oct 2020119,387โˆ’14,4591.00
15 Oct 2020133,846+54,9671.00
30 Sep 202078,879+44,3961.00
15 Sep 202034,483+25,0781.00
31 Aug 20209,405โˆ’14,8911.00
14 Aug 202024,296+6,6671.00
31 Jul 202017,629โˆ’11,3141.00
15 Jul 202028,943โˆ’27,4011.00
30 Jun 202056,344โˆ’71,4141.00
15 Jun 2020127,758โˆ’77,6331.00
29 May 2020205,391โˆ’50,8681.00
15 May 2020256,259โˆ’76,1011.07
30 Apr 2020332,360โˆ’4,4011.00
15 Apr 2020336,761+180,7641.00
31 Mar 2020155,997+136,4071.00
13 Mar 202019,590โˆ’10,9111.00
28 Feb 202030,501โˆ’3,5281.00
14 Feb 202034,029โˆ’1,7321.00
31 Jan 202035,761โˆ’14,9371.00
15 Jan 202050,698+6,6161.00
31 Dec 201944,082โˆ’9,7081.00
13 Dec 201953,790โˆ’23,1071.00
29 Nov 201976,897+14,2461.00
15 Nov 201962,651+28,3311.00
31 Oct 201934,320+4,2261.00
15 Oct 201930,094+20,6181.00
30 Sep 20199,476+8,2641.00
13 Sep 20191,212โˆ’9,1371.00
30 Aug 201910,349โˆ’9,3871.00
15 Aug 201919,736โˆ’1,7871.00
31 Jul 201921,523โˆ’44,0541.00
15 Jul 201965,577+4,2721.00
28 Jun 201961,305+5801.00
14 Jun 201960,725+32,0471.00
31 May 201928,678โˆ’19,0471.00
15 May 201947,725โˆ’31,2561.00
30 Apr 201978,981โˆ’7,5081.00
15 Apr 201986,489+33,6661.00
29 Mar 201952,823+9,2741.00
15 Mar 201943,549โˆ’18,0381.00
28 Feb 201961,587โˆ’8,6421.00
15 Feb 201970,229+9,8511.00
31 Jan 201960,378+39,1131.00
15 Jan 201921,265+4,8881.00
31 Dec 201816,377+3,7011.00
14 Dec 201812,676+3,9241.00
30 Nov 20188,752+3,3991.00
15 Nov 20185,353โˆ’53,0301.00
31 Oct 201858,383โˆ’110,7681.00
15 Oct 2018169,151โˆ’63,0101.00
28 Sep 2018232,161โˆ’44,8531.82
14 Sep 2018277,014+1,5011.78
31 Aug 2018275,513+9,5482.84
15 Aug 2018265,965+141,5072.03
31 Jul 2018124,458+93,0401.00
13 Jul 201831,418+19,5841.00
29 Jun 201811,834+3,5111.00
15 Jun 20188,323+3911.00
31 May 20187,932โˆ’10,3241.00
15 May 201818,256+7,9641.00
30 Apr 201810,292โˆ’54,0461.00
13 Apr 201864,338โˆ’15,0301.00
29 Mar 201879,368โˆ’47,9011.00
15 Mar 2018127,269โˆ’82,9221.00
28 Feb 2018210,191+10,1951.57
15 Feb 2018199,996โˆ’58,9931.00
31 Jan 2018258,989+49,4591.19
12 Jan 2018209,530สณ+8,9471.02
29 Dec 2017200,583โ€“1.33

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

Questions

Frequently asked questions

What is NMZ's short interest?
149,994 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 64,103 from the previous settlement.
Why is there no percentage for NMZ?
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 NMZ'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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