Skip to content
HowShorted

MSTW short interest Cboe BZX

Roundhill MSTR WeeklyPay ETF. 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
161,122
vs previous settlement
−354,955 (-68.8%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for MSTW: 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
1
9 Sep 2026
Highest in window
111,045
27 Mar 2026
Days with a balance
123
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Roundhill MSTR WeeklyPay ETF 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 111K shares.

History

Every FINRA settlement we hold for MSTW, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 2026161,122−354,9551.00
31 Aug 2026516,077+461,7481.00
14 Aug 202654,329−346,2111.00
31 Jul 2026400,540+139,6101.01
15 Jul 2026260,930+239,8031.00
30 Jun 202621,127−17,1841.00
15 Jun 202638,311−7,3151.00
29 May 202645,626+3,4881.00
15 May 202642,138−221,4401.00
30 Apr 2026263,578+172,0561.00
15 Apr 202691,522−120,8261.00
31 Mar 2026212,348+123,7581.00
13 Mar 202688,590−163,0941.00
27 Feb 2026251,684+32,8291.00
13 Feb 2026218,855+67,2331.00
30 Jan 2026151,622−104,6541.00
15 Jan 2026256,276+206,3601.00
31 Dec 202549,916−87,9121.00
15 Dec 2025137,828−114,6281.00
28 Nov 2025252,456+79,5151.00
14 Nov 2025172,941−60,7961.00
31 Oct 2025233,737−69,0031.00
15 Oct 2025302,740+14,1271.00
30 Sep 2025288,613+275,1701.00
15 Sep 202513,443+4,3781.00
29 Aug 20259,065−19,1461.00
15 Aug 202528,211+25,4391.00
31 Jul 20252,772–1.00

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

Questions

Frequently asked questions

What is MSTW's short interest?
161,122 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 354,955 from the previous settlement.
Why is there no percentage for MSTW?
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 MSTW'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.

Ranked companies with a percentage: most shorted US stocks. Other funds by shares short and days to cover: most shorted ETFs. Other symbols with counts only: shares short without a percentage. Browse by name: US companies A to Z.