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MMAX short interest Cboe BZX

iShares Large Cap Max Buffer M. 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
25,583
vs previous settlement
+903 (+3.7%)
days to cover
33.18
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for MMAX: 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
507
14 Sep 2026
Highest in window
110,426
1 Apr 2026
Days with a balance
57
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for iShares Large Cap Max Buffer M 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 110K shares.

History

Every FINRA settlement we hold for MMAX, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202625,583+90333.18
31 Aug 202624,680−9,63719.07
14 Aug 202634,317+2,11020.71
31 Jul 202632,207−16713.15
15 Jul 202632,374−1,4802.88
30 Jun 202633,854−54212.13
15 Jun 202634,396−11011.86
29 May 202634,506+3,4783.76
15 May 202631,028−13,7194.45
30 Apr 202644,747+6,2863.79
15 Apr 202638,461−126,2491.00
31 Mar 2026164,710+152,7134.94
13 Mar 202611,997+8,6622.92
27 Feb 20263,335+3,0165.10
13 Feb 2026319+511.00
30 Jan 2026268−4,2361.00
15 Jan 20264,504+4,0351.53
31 Dec 2025469−1521.00
15 Dec 2025621−1291.00
28 Nov 2025750+3471.00
14 Nov 2025403−1,9191.00
31 Oct 20252,322+2,3211.00
15 Oct 20251−251.00
30 Sep 202526−8331.00
29 Aug 2025859+6611.00
15 Aug 2025198−791.00
31 Jul 2025277−1201.00
15 Jul 2025397−2,5081.00
30 Jun 20252,905−3,7051.00
13 Jun 20256,610+2,2042.30
30 May 20254,406−29,7381.00
15 May 202534,144+11,4031.68
30 Apr 202522,741+9,8461.00
15 Apr 202512,895–1.00

Scroll inside the table for earlier settlements, back to 15 Apr 2025.

Questions

Frequently asked questions

What is MMAX's short interest?
25,583 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, up 903 from the previous settlement.
Why is there no percentage for MMAX?
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 MMAX's days to cover?
33.18 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.