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HowShorted

TRIO short interest Cboe BZX

MC Trio Equity Buffered 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
3,248
vs previous settlement
−151 (-4.4%)
days to cover
2.57
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for TRIO: 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
269
14 Sep 2026
Highest in window
12,062
25 Mar 2026
Days with a balance
90
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for MC Trio Equity Buffered 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 12K shares.

History

Every FINRA settlement we hold for TRIO, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20263,248−1512.57
31 Aug 20263,399+2652.73
14 Aug 20263,134+3353.67
31 Jul 20262,799−7101.69
15 Jul 20263,509+3,1085.52
30 Jun 2026401+3511.00
15 Jun 202650+41.00
29 May 202646−9421.00
15 May 2026988+8561.00
30 Apr 2026132+531.00
15 Apr 202679−981.00
31 Mar 2026177−3,3951.00
13 Mar 20263,572+3,5253.85
27 Feb 202647−261.00
13 Feb 202673+241.00
15 Jan 202649−4591.00
31 Dec 2025508+4471.00
28 Nov 20256101.00
14 Nov 202561−2,7281.00
31 Oct 20252,789+6071.00
15 Oct 20252,182+412.76
30 Sep 20252,178+137.55
15 Sep 20252,177−18320.35
29 Aug 20252,360−6422.50
15 Aug 20253,002−3963.23
31 Jul 20253,398+8398.13
15 Jul 20252,559−820.98
30 Jun 20252,567−6685.39
13 Jun 20253,235+6535.23
30 May 20252,582−8,1803.27
15 May 202510,762+3,6366.86
30 Apr 20257,126+1,5809.67
15 Apr 20255,546+2,6813.68
31 Mar 20252,865−4951.00
14 Mar 20253,360–1.00

Scroll inside the table for earlier settlements, back to 14 Mar 2025.

Questions

Frequently asked questions

What is TRIO's short interest?
3,248 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 151 from the previous settlement.
Why is there no percentage for TRIO?
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 TRIO's days to cover?
2.57 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.