General Circulars
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File No.
Date
Description
2016-08-11
Collection of Exchange fees and other claims and billing policy
August 11, 2016
Q3
2016
2016-08-02
Regulatory Transaction Fee Rate per Section 31 of the Securities Exchange Act of 1934 ("Exchange Act") Effective for Investors Exchange Launch
August 2, 2016
Q3
2016
2016-07-13
Notice of Annual Meeting and Nominee for Member Representative Director Position of the Exchanges Board of Directors
July 13, 2016
Q3
2016
Regulatory Circulars
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File No.
Date
Description
2024-04-17
Enhancements to FINRA Firm Gateway and Regulatory Notifications
April 17, 2024
Q2
2024
2024-01-03
Mandatory Participation in Market Wide Circuit Breaker (“MWCB”) Testing for Certain Members
January 3, 2024
Q1
2024
2024-01-03
Mandatory Participation in Disaster Recovery Testing Pursuant to Regulation SCI for Certain Members
January 3, 2024
Q1
2024
2023-01-04
Mandatory Participation in Market Wide Circuit Breaker (“MWCB”) Testing for Certain Members
January 4, 2023
Q1
2023
2023-01-04
Mandatory Participation in Disaster Recovery Testing Pursuant to Regulation SCI for Certain Members
January 4, 2023
Q1
2023
2022-09-15
Mandatory Participation in Market Wide Circuit Breaker (“MWCB”) Testing for Certain Members
September 15, 2022
Q3
2022
2022-01-05
Mandatory Participation in Disaster Recovery Testing Pursuant to Regulation SCI
January 5, 2022
Q1
2022
2021-01-08
Mandatory Participation in Disaster Recovery Testing Pursuant to Regulation SCI
January 8, 2021
Q1
2021
2020-07-30
Adoption of Changes to Minor Rule Violation Plan Adding CAT Reporting Compliance Rules
July 30, 2020
Q3
2020
2020-01-07
Mandatory Participation in Disaster Recovery Testing Pursuant to Regulation SCI
January 7, 2020
Q1
2020
2019-07-23
Chief Compliance Officer examination and registration requirements
July 23, 2019
Q3
2019
2019-01-10
Mandatory Participation in Disaster Recovery Testing Pursuant to Regulation SCI
January 10, 2019
Q1
2019
Product Circulars
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File No.
Date
Description
2024-09-30
Calamos Russell 2000 Structured Alt Protection ETF - October
September 30, 2024
Q3
2024
2024-09-30
Calamos S&P 500 Structured Alt Protection ETF - October
September 30, 2024
Q3
2024