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CPSP 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
3,787
vs previous settlement
−1,908 (-33.5%)
days to cover
5.76
Settlement date
15 Sep 2026

Shares short over time

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

Fails to deliver

The SEC's fails-to-deliver figure for CPSP: 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
172
20 Aug 2026
Highest in window
31,179
8 Apr 2026
Days with a balance
50
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 31K shares.

History

Every FINRA settlement we hold for CPSP, newest first.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 20263,787−1,9085.76
31 Aug 20265,695−15,5097.71
14 Aug 202621,204+11,10137.40
31 Jul 202610,103−28,2723.84
15 Jul 202638,375+31,1105.48
30 Jun 20267,265+1,66011.76
15 Jun 20265,605−6,5853.27
29 May 202612,190+1,37915.41
15 May 202610,811−11,1205.28
30 Apr 202621,931+11,88814.49
15 Apr 202610,043+3,8071.00
31 Mar 20266,236+9785.89
13 Mar 20265,258−4,6698.93
27 Feb 20269,927−15,0688.96
13 Feb 202624,995+17,51118.61
30 Jan 20267,484+5,31111.12
15 Jan 20262,173−5802.27
31 Dec 20252,753+1,4768.07
15 Dec 20251,277+6411.57
28 Nov 2025636−293.31
14 Nov 2025665−1422.13
31 Oct 2025807−9342.98
15 Oct 20251,741+1,7241.51
30 Sep 20251701.00
15 Sep 202517−2041.00
29 Aug 2025221+41.00
15 Aug 2025217−31.00
31 Jul 2025220−5011.00
15 Jul 2025721−12,0561.00
30 Jun 202512,777−14693.26
13 Jun 202512,923−6,6612.18
30 May 202519,584+1,08539.09
15 May 202518,499+7,1595.17
30 Apr 202511,340−20,5131.00
15 Apr 202531,853–1.00

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

Questions

Frequently asked questions

What is CPSP's short interest?
3,787 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 1,908 from the previous settlement.
Why is there no percentage for CPSP?
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 CPSP's days to cover?
5.76 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.