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HowShorted

CBOA short interest Cboe BZX

Calamos Bitcoin Structured Alt. 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
45
vs previous settlement
−12 (-21.1%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for CBOA: 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
11
9 Sep 2026
Highest in window
8,755
3 Feb 2026
Days with a balance
106
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Calamos Bitcoin Structured Alt 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 8.8K shares.

History

Every FINRA settlement we hold for CBOA, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202645−121.00
31 Aug 202657−891.00
14 Aug 2026146+231.00
31 Jul 2026123−1531.00
15 Jul 2026276+2491.00
30 Jun 202627−5741.00
15 Jun 2026601+4341.62
29 May 2026167+11.00
15 May 2026166−491.00
30 Apr 2026215−1551.00
15 Apr 2026370+3321.00
27 Feb 202638+371.00
13 Feb 20261−4071.00
30 Jan 2026408−1,0121.00
15 Jan 20261,420+1,1101.00
31 Dec 2025310+2861.00
15 Dec 202524−811.00
28 Nov 2025105−2081.00
31 Oct 2025313+2491.00
15 Oct 202564−821.00
30 Sep 2025146+681.00
15 Sep 202578−281.00
15 Aug 2025106−3211.00
31 Jul 2025427−4461.00
15 Jul 2025873+8341.00
30 Jun 202539−2,0541.00
13 Jun 20252,093−1,2011.00
30 May 20253,294−3,9621.74
15 May 20257,256+6,1801.77
30 Apr 20251,076−26,9301.00
15 Apr 202528,006–2.21

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

Questions

Frequently asked questions

What is CBOA's short interest?
45 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 12 from the previous settlement.
Why is there no percentage for CBOA?
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 CBOA'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.