DCO
Ducommun Incorporated
stock NYSE

Some additional thoughts/elaborations/notes:
(Part 1 of 2)
Form CA-1 is the official application used by entities to seek exemption from registration as a clearing agency with the Securities and Exchange Commission under Section 17A of the Securities Exchange Act of 1934. Surprisingly, searching https://sec.gov/edgar/search/#/dateRange=all&category=custom&forms=CA-1 returns zero (0) results. Allegedly this is because CA-1 submissions are usually published by the SEC as notices, orders, or releases. The SEC EDGAR database, which provides filtering by CA-1 filing type, showing zero results for these filings, seems to complicate discovery of which other entities, besides Bloomberg STP LLC, may also have sought for exemption from registration.
For example, as pertaining to this post and the corresponding comment responding to bloodhound1144's post, "Surveil, Copy, Replace ("There was nothing to learn.")", what if one of Elon Musk's entities may also have filed for such exemption, and if so, where could it be found since SEC's EDGAR database does not disseminate this information?
- Zero 0) results: https://sec.gov/edgar/search/#/dateRange=all&ciks=0001633200&entityName=Bloomberg%2520STP%2520LLC%2520(CIK%25200001633200)
- Yep! Zero results for Bloomberg STP LLC (CIK 0001633200), the entity described in thirty (30) page PDF https://govinfo.gov/content/pkg/FR-2015-12-01/pdf/2015-30412.pdf
- One (1) result: https://sec.gov/edgar/search/#/dateRange=custom&ciks=0001011661&entityName=SS%2526C%2520TECHNOLOGIES%2520INC%2520(CIK%25200001011661)&startdt=2013-03-15&enddt=2013-03-15
- Filed: 2013-03-15 / Form: SC 13G/A (Beneficial ownership report) / Filing entities: SS&C TECHNOLOGIES INC (CIK 0001011661), JANUS CAPITAL MANAGEMENT LLC (CIK 0000812295)
- Note: Perkins Investment Management LLC was a subsidiary of Janus Capital Group Inc. (merged with Henderson Group plc to form Janus Henderson Group plc in 2017) and is associated with Leon Black’s investment firm, Elysium Management. It functions as one of three individual investment boutiques under the Janus Henderson umbrella, alongside Janus Capital Management LLC and INTECH Investment Management LLC.
- On March 15, 2013, Bloomberg STP LLC (‘‘BSTP’’) filed with the Securities and Exchange Commission (‘‘Commission’’) an application on Form CA–1 for an exemption from registration as a clearing agency (‘‘BSTP application’’) pursuant to Section 17A of the Securities Exchange Act of 1934 (‘‘Exchange Act’’) and Rule 17Ab2–1 thereunder - https://govinfo.gov/content/pkg/FR-2015-12-01/pdf/2015-30412.pdf
However, this result is for SS&C Technologies, Inc. (‘‘SS&C’’), which did not file Form CA-1 on this date, despite the date being the same. I'm not sure if this is important or not, but mentioning anyway (albeit a mistake on my part, see next bullet point)
- Zero (0) results: https://sec.gov/edgar/search/#/dateRange=custom&ciks=0001011661&entityName=SS%2526C%2520TECHNOLOGIES%2520INC%2520(CIK%25200001011661)&startdt=2013-04-15&enddt=2013-04-15
- On April 15, 2013, SS&C Technologies, Inc. (‘‘SS&C’’) filed with the Commission an application on Form CA–1 for an exemption from registration as a clearing agency (‘‘SS&C application’’) pursuant to Section 17A of the Exchange Act and Rule 17Ab2–1 thereunder. - https://govinfo.gov/content/pkg/FR-2015-12-01/pdf/2015-30412.pdf
Despite the mistake from the above bullet point, there are no filings of any form to see from this entity on this date via SEC EDGAR database anyway, so...
- One (1) result: https://sec.gov/edgar/search/#/q=%2522exemption%2520from%2520clearing%2520agency%2520registration%2522&dateRange=all
One (1) result: https://sec.gov/edgar/search/#/q=%2522Exemptions%2520to%2520Clearing%2520Requirement%2522&dateRange=all
- Filed: 2025-01-23 / Form: SBSEF/A EX-99.M.SBSEF / Filing entity: Tradition SEF, LLC (CIK 0002032335)
- RULE 708 Exceptions and Exemptions to Clearing Requirement
Tradition Commodity SEF shall report to the SDR the required counterparty election of the end-user exception to the clearing requirement or the inter-affiliate exemption, as applicable, under section 2(h)(7)(A) of the Act
[...]
Tradition Commodity SEF shall provide or cause to be provided to a SDR the required counterparty election of the end-user exception or inter-affiliate exemption, as applicable, and the information as set forth in Parts 43 and 45 of CFTC Regulations
----
So basically, SEC EDGAR database is useless to find any of these essential informations. Continuing reading https://govinfo.gov/content/pkg/FR-2015-12-01/pdf/2015-30412.pdf
BSTP amended the BSTP application on May 7, 9, and 10, July 11, August 8, September 18, and November 21, 2013, December 19, 2014, and January 22, 2015.^1 BSTP intends to provide a matching service^2 and an electronic trade confirmation (‘‘ETC’’) service, and accordingly the BSTP application seeks an exemption from registration as a clearing agency. Notice of the BSTP application was published for comment in the Federal Register on March 5, 2015.^3
^1 A copy of the BSTP application is available at http://sec.gov/rules/other/2015/34-74394-form-ca-1.pdf
^2 The term ‘‘matching service’’ as used herein means an electronic service to centrally match trade information between a broker-dealer and its institutional customer.
^3 See Exchange Act Release No. 34–74394 (Feb. 27, 2015), 80 FR 12048 (Mar. 5, 2015) (‘‘BSTP notice’’).
----
Searching SEC's Rulemaking Activity for 'CA-1' I see one (1) result at https://sec.gov/rules-regulations/rulemaking-activity?search=CA-1&rulemaking_status=All&division_office=All&year=All
- Issue Date: Dec. 10, 2013 / File Number: S7-41-11 / Rulemaking: Prohibitions and Restrictions on Proprietary Trading and Certain Interests in, and Relationships With, Hedge Funds and Private Equity Funds *Investment Management, Trading and Markets* / Status: Final Rule
https://sec.gov/rules-regulations/2013/12/prohibitions-restrictions-proprietary-trading-certain-interests-relationships-hedge-funds-private#BHCA-1final
- It seems this is probably irrelevant and appears because of **Release Number: BHCA-1** but I am curious. What is BHCA-1? Hmmmmmmmmmmm, actually, even though it may not be directly relevant (per CA-1 search/inquiry), it does appear to be somewhat important anyway, given BHCA stands for Bank Holding Company Act and this implemented Section 13 of the Bank Holding Company Act of 1956, which is commonly known as the **Volcker Rule**. The 1 in BHCA-1 indicates it was the first major rulemaking release issued by the SEC (jointly with other agencies like the Federal Reserve and FDIC) specifically under the new Section 13 added to the BHCA by the Dodd-Frank Act. The rule prohibits banking entities from engaging in proprietary trading and restricts their ownership interests in hedge funds and private equity funds ('covered funds'). There presumably is no direct connection of this Volcker Rule to exceptions or exemptions from registration as a clearing agency, however a possible point of intersection may be a specific exclusion within the Volcker Rule's definition of 'proprietary trading.' The Volcker Rule explicitly excludes certain activities related to clearing from being classified as prohibited proprietary trading. Specifically, purchases and sales of financial instruments by a banking entity that is a member of a clearing agency, derivatives clearing organization (DCO), or financial market utility are excluded if they are:
- Critical to the orderly operation of the clearing agency/DCO.
- Made to manage risks arising from the entity's clearing activities.
- Made as a result of the entity acting as a derivatives clearing organization or financial market utility.
Key Distinction: This exclusion means a bank performing necessary clearing functions isn't violating the Volcker Rule. It does not mean the Volcker Rule grants exemptions from the requirement to register as a clearing agency. An entity performing clearing functions must still file Form CA-1 to register or seek exemption under Section 17A, regardless of the Volcker Rule.
Bloomberg STP LLC is a wholly-owned subsidiary of Bloomberg L.P., which is not a bank, not a bank holding company, nor an affiliate thereof. SS&C Technologies, Inc is a provider of financial software and services, but is not a bank nor a bank holding company. The Volcker Rule does not apply to either of them.
So anyway, this does not seem relevant, but it's interest to glance back at Volcker Rule things, and previous relevances to larger scale of what's happening.
(End of Part 1 of 2)

Some additional thoughts/elaborations/notes:
(Part 1 of 2)
Form CA-1 is the official application used by entities to seek exemption from registration as a clearing agency with the Securities and Exchange Commission under Section 17A of the Securities Exchange Act of 1934. Surprisingly, searching https://sec.gov/edgar/search/#/dateRange=all&category=custom&forms=CA-1 returns zero (0) results. Allegedly this is because CA-1 submissions are usually published by the SEC as notices, orders, or releases. The SEC EDGAR database, which provides filtering by CA-1 filing type, showing zero results for these filings, seems to complicate discovery of which other entities, besides Bloomberg STP LLC, may also have sought for exemption from registration.
For example, as pertaining to this post and the corresponding comment responding to bloodhound1144's post, "Surveil, Copy, Replace ("There was nothing to learn.")", what if one of Elon Musk's entities may also have filed for such exemption, and if so, where could it be found since SEC's EDGAR database does not disseminate this information?
- Zero 0) results: https://sec.gov/edgar/search/#/dateRange=all&ciks=0001633200&entityName=Bloomberg%2520STP%2520LLC%2520(CIK%25200001633200)
- Yep! Zero results for Bloomberg STP LLC (CIK 0001633200), the entity described in thirty (30) page PDF https://govinfo.gov/content/pkg/FR-2015-12-01/pdf/2015-30412.pdf
- One (1) result: https://sec.gov/edgar/search/#/dateRange=custom&ciks=0001011661&entityName=SS%2526C%2520TECHNOLOGIES%2520INC%2520(CIK%25200001011661)&startdt=2013-03-15&enddt=2013-03-15
- Filed: 2013-03-15 / Form: SC 13G/A (Beneficial ownership report) / Filing entities: SS&C TECHNOLOGIES INC (CIK 0001011661), JANUS CAPITAL MANAGEMENT LLC (CIK 0000812295)
- Note: Perkins Investment Management LLC was a subsidiary of Janus Capital Group Inc. (merged with Henderson Group plc to form Janus Henderson Group plc in 2017) and is associated with Leon Black’s investment firm, Elysium Management. It functions as one of three individual investment boutiques under the Janus Henderson umbrella, alongside Janus Capital Management LLC and INTECH Investment Management LLC.
- On March 15, 2013, Bloomberg STP LLC (‘‘BSTP’’) filed with the Securities and Exchange Commission (‘‘Commission’’) an application on Form CA–1 for an exemption from registration as a clearing agency (‘‘BSTP application’’) pursuant to Section 17A of the Securities Exchange Act of 1934 (‘‘Exchange Act’’) and Rule 17Ab2–1 thereunder - https://govinfo.gov/content/pkg/FR-2015-12-01/pdf/2015-30412.pdf
However, this result is for SS&C Technologies, Inc. (‘‘SS&C’’), which did not file Form CA-1 on this date, despite the date being the same. I'm not sure if this is important or not, but mentioning anyway (albeit a mistake on my part, see next bullet point)
- Zero (0) results: https://sec.gov/edgar/search/#/dateRange=custom&ciks=0001011661&entityName=SS%2526C%2520TECHNOLOGIES%2520INC%2520(CIK%25200001011661)&startdt=2013-04-15&enddt=2013-04-15
- On April 15, 2013, SS&C Technologies, Inc. (‘‘SS&C’’) filed with the Commission an application on Form CA–1 for an exemption from registration as a clearing agency (‘‘SS&C application’’) pursuant to Section 17A of the Exchange Act and Rule 17Ab2–1 thereunder. - https://govinfo.gov/content/pkg/FR-2015-12-01/pdf/2015-30412.pdf
Despite the mistake from the above bullet point, there are no filings of any form to see from this entity on this date via SEC EDGAR database anyway, so...
- One (1) result: https://sec.gov/edgar/search/#/q=%2522exemption%2520from%2520clearing%2520agency%2520registration%2522&dateRange=all
One (1) result: https://sec.gov/edgar/search/#/q=%2522Exemptions%2520to%2520Clearing%2520Requirement%2522&dateRange=all
- Filed: 2025-01-23 / Form: SBSEF/A EX-99.M.SBSEF / Filing entity: Tradition SEF, LLC (CIK 0002032335)
- RULE 708 Exceptions and Exemptions to Clearing Requirement
Tradition Commodity SEF shall report to the SDR the required counterparty election of the end-user exception to the clearing requirement or the inter-affiliate exemption, as applicable, under section 2(h)(7)(A) of the Act
[...]
Tradition Commodity SEF shall provide or cause to be provided to a SDR the required counterparty election of the end-user exception or inter-affiliate exemption, as applicable, and the information as set forth in Parts 43 and 45 of CFTC Regulations
----
So basically, SEC EDGAR database is useless to find any of these essential informations. Continuing reading https://govinfo.gov/content/pkg/FR-2015-12-01/pdf/2015-30412.pdf
BSTP amended the BSTP application on May 7, 9, and 10, July 11, August 8, September 18, and November 21, 2013, December 19, 2014, and January 22, 2015.^1 BSTP intends to provide a matching service^2 and an electronic trade confirmation (‘‘ETC’’) service, and accordingly the BSTP application seeks an exemption from registration as a clearing agency. Notice of the BSTP application was published for comment in the Federal Register on March 5, 2015.^3
^1 A copy of the BSTP application is available at http://sec.gov/rules/other/2015/34-74394-form-ca-1.pdf
^2 The term ‘‘matching service’’ as used herein means an electronic service to centrally match trade information between a broker-dealer and its institutional customer.
^3 See Exchange Act Release No. 34–74394 (Feb. 27, 2015), 80 FR 12048 (Mar. 5, 2015) (‘‘BSTP notice’’).
----
Searching SEC's Rulemaking Activity for 'CA-1' I see one (1) result at https://sec.gov/rules-regulations/rulemaking-activity?search=CA-1&rulemaking_status=All&division_office=All&year=All
- Issue Date: Dec. 10, 2013 / File Number: S7-41-11 / Rulemaking: Prohibitions and Restrictions on Proprietary Trading and Certain Interests in, and Relationships With, Hedge Funds and Private Equity Funds *Investment Management, Trading and Markets* / Status: Final Rule
https://sec.gov/rules-regulations/2013/12/prohibitions-restrictions-proprietary-trading-certain-interests-relationships-hedge-funds-private#BHCA-1final
- It seems this is probably irrelevant and appears because of **Release Number: BHCA-1** but I am curious. What is BHCA-1? Hmmmmmmmmmmm, actually, even though it may not be directly relevant (per CA-1 search/inquiry), it does appear to be somewhat important anyway, given BHCA stands for Bank Holding Company Act and this implemented Section 13 of the Bank Holding Company Act of 1956, which is commonly known as the **Volcker Rule**. The 1 in BHCA-1 indicates it was the first major rulemaking release issued by the SEC (jointly with other agencies like the Federal Reserve and FDIC) specifically under the new Section 13 added to the BHCA by the Dodd-Frank Act. The rule prohibits banking entities from engaging in proprietary trading and restricts their ownership interests in hedge funds and private equity funds ('covered funds'). There presumably is no direct connection of this Volcker Rule to exceptions or exemptions from registration as a clearing agency, however a possible point of intersection may be a specific exclusion within the Volcker Rule's definition of 'proprietary trading.' The Volcker Rule explicitly excludes certain activities related to clearing from being classified as prohibited proprietary trading. Specifically, purchases and sales of financial instruments by a banking entity that is a member of a clearing agency, derivatives clearing organization (DCO), or financial market utility are excluded if they are:
- Critical to the orderly operation of the clearing agency/DCO.
- Made to manage risks arising from the entity's clearing activities.
- Made as a result of the entity acting as a derivatives clearing organization or financial market utility.
Key Distinction: This exclusion means a bank performing necessary clearing functions isn't violating the Volcker Rule. It does not mean the Volcker Rule grants exemptions from the requirement to register as a clearing agency. An entity performing clearing functions must still file Form CA-1 to register or seek exemption under Section 17A, regardless of the Volcker Rule.
Bloomberg STP LLC is a wholly-owned subsidiary of Bloomberg L.P., which is not a bank, not a bank holding company, nor an affiliate thereof. SS&C Technologies, Inc is a provider of financial software and services, but is not a bank nor a bank holding company. The Volcker Rule does not apply to either of them.
So anyway, this does not seem relevant, but it's interest to glance back at Volcker Rule things, and previous relevances to larger scale of what's happening.
(End of Part 1 of 2)