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HowShorted

MUST short interest NYSE Arca

Columbia Multi-Sector 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: exchange-traded product: its share count floats with creation and redemption.

Shares short
31,250
vs previous settlement
+2,808 (+9.9%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for MUST: 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
3,437
13 Aug 2026
Highest in window
196,290
12 Dec 2025
Days with a balance
127
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Columbia Multi-Sector 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 196K shares.

History

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

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202631,250+2,8081.00
31 Aug 202628,442โˆ’19,7001.00
14 Aug 202648,142โˆ’25,2611.00
31 Jul 202673,403โˆ’23,6101.00
15 Jul 202697,013โˆ’6,3731.00
30 Jun 2026103,386+3,7251.21
15 Jun 202699,661+49,0901.00
29 May 202650,571+15,5471.00
15 May 202635,024+23,8151.00
30 Apr 202611,209โˆ’11,4871.00
15 Apr 202622,696โˆ’37,0381.00
31 Mar 202659,734+44,1621.00
13 Mar 202615,572โˆ’67,0701.00
27 Feb 202682,642+62,9971.00
13 Feb 202619,645โˆ’5,0281.00
30 Jan 202624,673โˆ’6,1391.00
15 Jan 202630,812+5,5131.00
31 Dec 202525,299โˆ’543,1931.00
15 Dec 2025568,492+562,6123.92
28 Nov 20255,880โˆ’6,8051.00
14 Nov 202512,685+5,2771.00
31 Oct 20257,408โˆ’14,5541.00
15 Oct 202521,962โˆ’15,7771.00
30 Sep 202537,739+29,0321.00
15 Sep 20258,707+3,7091.00
29 Aug 20254,998โˆ’16,4451.00
15 Aug 202521,443โˆ’9,3541.00
31 Jul 202530,797+6,3151.00
15 Jul 202524,482โˆ’18,3921.00
30 Jun 202542,874+34,5201.00
13 Jun 20258,354โˆ’12,0441.00
30 May 202520,398โˆ’336,6191.00
15 May 2025357,017+285,6472.80
30 Apr 202571,370+23,5451.00
15 Apr 202547,825โˆ’3771.00
31 Mar 202548,202+45,0391.00
14 Mar 20253,163โˆ’1,1741.00
28 Feb 20254,337โˆ’10,0101.00
14 Feb 202514,347+12,0071.00
31 Jan 20252,340โˆ’1,7941.00
15 Jan 20254,134โˆ’16,6181.00
31 Dec 202420,752โˆ’137,2971.00
13 Dec 2024158,049+93,9121.28
29 Nov 202464,137โˆ’8321.22
15 Nov 202464,969+48,1411.00
31 Oct 202416,828+10,0231.00
15 Oct 20246,805โˆ’58,3751.00
30 Sep 202465,180+56,5651.00
13 Sep 20248,615โˆ’8,1781.00
30 Aug 202416,793โˆ’2,0401.00
15 Aug 202418,833+8331.00
31 Jul 202418,000+10,6281.00
15 Jul 20247,372โˆ’20,0611.00
28 Jun 202427,433+13,2331.00
14 Jun 202414,200+3,5771.00
31 May 202410,623โˆ’4,0091.00
15 May 202414,632+7,4491.00
30 Apr 20247,183โˆ’50,5071.00
15 Apr 202457,690+13,7441.00
28 Mar 202443,946โˆ’2,8891.00
15 Mar 202446,835โˆ’53,2701.00
29 Feb 2024100,105+80,1911.00
15 Feb 202419,914+11,4661.00
31 Jan 20248,448โˆ’26,9481.00
12 Jan 202435,396โˆ’1,7761.00
29 Dec 202337,172โˆ’73,4371.00
15 Dec 2023110,609+62,0791.11
30 Nov 202348,530+18,8521.00
15 Nov 202329,678สณโˆ’75,2591.00
31 Oct 2023104,937โˆ’64,2561.01
13 Oct 2023169,193โˆ’68,4311.56
29 Sep 2023237,624+32,9903.12
15 Sep 2023204,634โˆ’127,0971.47
31 Aug 2023331,731+186,5364.67
15 Aug 2023145,195โˆ’214,1561.77
31 Jul 2023359,351+245,3554.57
14 Jul 2023113,996โˆ’52,1201.83
30 Jun 2023166,116+114,6402.00
15 Jun 202351,476+10,9621.00
31 May 202340,514โˆ’18,3881.00
15 May 202358,902+45,7771.00
28 Apr 202313,125โˆ’5,5271.00
14 Apr 202318,652โˆ’32,5471.00
31 Mar 202351,199+38,9211.00
15 Mar 202312,278โˆ’18,9881.00
28 Feb 202331,266+3,0701.00
15 Feb 202328,196โˆ’173,9981.00
31 Jan 2023202,194+186,0041.57
13 Jan 202316,190โˆ’6,8281.00
30 Dec 202223,018โˆ’14,4801.00
15 Dec 202237,498โˆ’3,8831.00
30 Nov 202241,381+23,7251.00
15 Nov 202217,656โˆ’159,8361.00
31 Oct 2022177,492+145,5361.04
14 Oct 202231,956+21,6601.00
30 Sep 202210,296โˆ’16,9421.00
15 Sep 202227,238โˆ’31,9411.00
31 Aug 202259,179+19,4941.00
15 Aug 202239,685+23,9491.00
29 Jul 202215,736โˆ’9,8161.00
15 Jul 202225,552+6,8861.00
30 Jun 202218,666โˆ’2,7901.00
15 Jun 202221,456โˆ’32,1991.00
31 May 202253,655โˆ’12,7491.00
13 May 202266,404+54,5891.00
29 Apr 202211,815โˆ’1,5121.00
14 Apr 202213,327+10,4251.00
31 Mar 20222,902โˆ’11,2111.00
15 Mar 202214,113+10,9631.00
28 Feb 20223,150โˆ’36,6481.00
15 Feb 202239,798+38,7761.00
31 Jan 20221,022โˆ’10,4841.00
14 Jan 202211,506โˆ’3,0691.00
31 Dec 202114,575โˆ’21,0601.00
15 Dec 202135,635+18,7391.00
30 Nov 202116,896โˆ’2,0291.00
15 Nov 202118,925โˆ’52,6921.00
29 Oct 202171,617+37,4081.05
15 Oct 202134,209+26,5571.00
30 Sep 20217,652โˆ’3,2731.00
15 Sep 202110,925โˆ’16,5671.00
31 Aug 202127,492+2,4761.00
13 Aug 202125,016โˆ’4,5531.00
30 Jul 202129,569โˆ’5,5161.10
15 Jul 202135,085โˆ’6,8661.06
30 Jun 202141,951+23,1291.00
15 Jun 202118,822+2,7961.00
28 May 202116,026+1,6211.00
14 May 202114,405โˆ’20,5151.00
30 Apr 202134,920+11,7181.00
15 Apr 202123,202โˆ’30,6521.34
31 Mar 202153,854+46,0493.02
15 Mar 20217,805โˆ’55,4501.00
26 Feb 202163,255+60,5622.28
12 Feb 20212,693โˆ’14,2541.00
29 Jan 202116,947โˆ’16,2831.10
15 Jan 202133,230โˆ’2,2351.68
31 Dec 202035,465+22,3603.27
15 Dec 202013,105+3,1281.00
30 Nov 20209,977โˆ’4,2571.00
13 Nov 202014,234โˆ’6,1801.33
30 Oct 202020,414+1,3641.83
15 Oct 202019,050โˆ’13,6111.81
30 Sep 202032,661โˆ’12,6991.85
15 Sep 202045,360+3,4103.81
31 Aug 202041,950+15,6452.71
14 Aug 202026,305โˆ’50,9931.72
31 Jul 202077,298+44,6666.77
15 Jul 202032,632+27,1354.74
30 Jun 20205,497โˆ’40,0261.00
15 Jun 202045,523+33,8163.47
29 May 202011,707โˆ’18,6521.52
15 May 202030,359+8,9813.12
30 Apr 202021,378โˆ’21,9532.78
15 Apr 202043,331+8,0513.60
31 Mar 202035,280+24,6082.58
13 Mar 202010,672โˆ’10,0991.00
28 Feb 202020,771+14,1675.84
14 Feb 20206,604โˆ’3242.93
31 Jan 20206,928โˆ’18,5131.00
15 Jan 202025,441+22,4081.22
31 Dec 20193,033+2,5652.05
13 Dec 2019468โˆ’5941.00
29 Nov 20191,062+6391.00
15 Nov 2019423โˆ’1,5701.00
31 Oct 20191,993โˆ’20,2871.00
15 Oct 201922,280+8,46617.65
30 Sep 201913,814+95511.42
13 Sep 201912,859+3,56813.80
30 Aug 20199,291+8,5987.85
15 Aug 2019693โˆ’5211.40
31 Jul 20191,214โˆ’891.00
15 Jul 20191,303โˆ’3,2251.00
28 Jun 20194,528+2,9066.23
14 Jun 20191,622โˆ’1,0024.58
31 May 20192,624โˆ’1,4341.86
15 May 20194,058+1,1384.05
30 Apr 20192,920+31512.02
15 Apr 20192,605โˆ’4991.92
29 Mar 20193,104+1,1047.65
15 Mar 20192,000+8182.71
28 Feb 20191,18201.59
15 Feb 20191,182โˆ’1991.00
31 Jan 20191,381โˆ’20119.45
15 Jan 20191,582โˆ’1,7428.24
31 Dec 20183,324+6361.00
14 Dec 20182,688+2896.00
30 Nov 20182,686โˆ’5289.53
15 Nov 20182,738โˆ’1,2623.15
31 Oct 20184,000โ€“3.35

Scroll inside the table for earlier settlements, back to 31 Oct 2018.

Questions

Frequently asked questions

What is MUST's short interest?
31,250 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 2,808 from the previous settlement.
Why is there no percentage for MUST?
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 MUST'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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