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MSFX short interest Cboe BZX

T-Rex 2X Long Microsoft Daily. 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
223,856
vs previous settlement
โˆ’13,926 (-5.9%)
days to cover
5.05
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for MSFX: 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
88
14 Sep 2026
Highest in window
1,188,401
23 Dec 2025
Days with a balance
142
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for T-Rex 2X Long Microsoft Daily 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 1.2M shares.

History

Every FINRA settlement we hold for MSFX, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 2026223,856โˆ’13,9265.05
31 Aug 2026237,782+3,9633.65
14 Aug 2026233,819โˆ’267,4101.13
31 Jul 2026501,229โˆ’69,7401.29
15 Jul 2026570,969+97,7001.75
30 Jun 2026473,269+62,0161.27
15 Jun 2026411,253+219,3441.37
29 May 2026191,909+81,9641.00
15 May 2026109,945+2,4811.00
30 Apr 2026107,464โˆ’145,1151.00
15 Apr 2026252,579+156,2791.15
31 Mar 202696,300+41,7961.00
13 Mar 202654,504โˆ’154,9061.00
27 Feb 2026209,410โˆ’35,9151.53
13 Feb 2026245,325โˆ’102,4461.00
30 Jan 2026347,771+315,2661.59
15 Jan 202632,505+17,8841.00
31 Dec 202514,621โˆ’47,1481.00
15 Dec 202561,769+44,9961.75
28 Nov 202516,773+15,3591.00
14 Nov 20251,414โˆ’65,2261.00
31 Oct 202566,640+35,6711.00
15 Oct 202530,969+4,1511.00
30 Sep 202526,818โˆ’10,7641.00
15 Sep 202537,582+12,2451.00
29 Aug 202525,337+9,9121.00
15 Aug 202515,425+9301.00
31 Jul 202514,495+13,8261.00
15 Jul 2025669โˆ’5,9031.00
30 Jun 20256,572+3,1211.00
13 Jun 20253,451+2,3561.00
30 May 20251,095โˆ’4,0691.00
15 May 20255,164โˆ’1,9861.00
30 Apr 20257,150+9511.00
15 Apr 20256,199โˆ’6,6941.00
31 Mar 202512,893โˆ’3,8411.00
14 Mar 202516,734โˆ’17,9541.00
28 Feb 202534,688+14,8501.00
14 Feb 202519,838โˆ’58,9721.00
31 Jan 202578,810+53,5211.00
15 Jan 202525,289+17,6571.00
31 Dec 20247,632+1,4471.00
13 Dec 20246,185โˆ’7,7021.00
29 Nov 202413,887+2,3801.00
15 Nov 202411,507โˆ’43,2171.00
31 Oct 202454,724+32,7521.07
15 Oct 202421,972+20,5481.00
30 Sep 20241,424โˆ’2,3221.00
13 Sep 20243,746โˆ’1,0871.00
30 Aug 20244,833โˆ’16,8431.00
15 Aug 202421,676โˆ’9,4151.00
31 Jul 202431,091+30,9601.00
15 Jul 2024131โˆ’1,2931.00
28 Jun 20241,424+5361.00
14 Jun 2024888โˆ’12,5911.00
31 May 202413,479+9,2501.00
15 May 20244,229โˆ’27,0571.00
30 Apr 202431,286+25,7181.22
15 Apr 20245,568โˆ’7,3451.00
28 Mar 202412,913โˆ’2191.00
15 Mar 202413,132+10,0351.00
29 Feb 20243,097โˆ’2,9551.00
15 Feb 20246,052+5,4981.00
31 Jan 2024554โ€“1.00

Scroll inside the table for earlier settlements, back to 31 Jan 2024.

Questions

Frequently asked questions

What is MSFX's short interest?
223,856 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 13,926 from the previous settlement.
Why is there no percentage for MSFX?
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 MSFX's days to cover?
5.05 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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