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CPSD short interest NYSE Arca

Calamos S&P 500 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
1,165
vs previous settlement
−1,403 (-54.6%)
days to cover
1.00
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for CPSD: 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
38
26 Aug 2026
Highest in window
15,261
3 Dec 2025
Days with a balance
48
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Calamos S&P 500 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 15K shares.

History

Every FINRA settlement we hold for CPSD, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20261,165−1,4031.00
31 Aug 20262,568−8,2572.04
14 Aug 202610,825+9,6133.36
31 Jul 20261,212+4771.12
15 Jul 2026735+6871.00
30 Jun 202648−2,2561.00
15 Jun 20262,304+2,2563.45
29 May 202648−7341.00
15 May 2026782+6961.00
30 Apr 202686−11.00
15 Apr 20268701.00
31 Mar 202687+391.00
13 Mar 202648−2,6541.00
27 Feb 20262,702−2,6192.28
13 Feb 20265,321−4,0751.57
30 Jan 20269,396+2792.94
15 Jan 20269,117−59,1112.70
31 Dec 202568,228+25,7839.47
15 Dec 202542,445+32,5051.86
28 Nov 20259,940−7822.46
14 Nov 202510,722−1991.00
31 Oct 202510,921+9,2091.00
15 Oct 20251,712+1,6831.00
15 Sep 202529−11.00
29 Aug 202530−1,5151.00
31 Jul 20251,545+1,5201.00
15 Jul 202525−11,3131.00
30 Jun 202511,338+8972.72
13 Jun 202510,441+3,9031.39
30 May 20256,538−9681.00
15 May 20257,506−24,8601.00
30 Apr 202532,366+13,6711.35
15 Apr 202518,695+7411.00
31 Mar 202517,954−21,3441.29
14 Mar 202539,298+26,6271.39
28 Feb 202512,671+2,1302.08
14 Feb 202510,541−3,1792.38
31 Jan 202513,720−45,9851.17
15 Jan 202559,705+17,2361.31
31 Dec 202442,469−71,4231.00
13 Dec 2024113,892–1.00

Scroll inside the table for earlier settlements, back to 13 Dec 2024.

Questions

Frequently asked questions

What is CPSD's short interest?
1,165 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 1,403 from the previous settlement.
Why is there no percentage for CPSD?
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 CPSD'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.

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