> For the complete documentation index, see [llms.txt](https://www.mica.wtf/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.mica.wtf/mica.wtf/mifir/title-iii-transparency-for-systematic-internalisers-and-investment-firms-trading-otc-and-tick-size-r/21a.md).

# Art. 21a — Designated publishing entities

1. Competent authorities shall grant investment firms the status of designated publishing entity for specific classes of financial instrument, upon the request of those investment firms. The competent authority shall communicate such requests to ESMA.
2. Where only one party to a transaction is a designated publishing entity pursuant to paragraph 1 of this Article, that party shall be responsible for making transactions public through an APA in accordance with [Article 20(1)](/mica.wtf/mifir/title-iii-transparency-for-systematic-internalisers-and-investment-firms-trading-otc-and-tick-size-r/20.md) or [Article 21(1)](/mica.wtf/mifir/title-iii-transparency-for-systematic-internalisers-and-investment-firms-trading-otc-and-tick-size-r/21.md).
3. Where neither of the parties to a transaction, or both of the parties to a transaction, are designated publishing entities pursuant to paragraph 1 of this Article, only the entity that sells the financial instrument concerned shall be responsible for making the transaction public through an APA in accordance with [Article 20(1)](/mica.wtf/mifir/title-iii-transparency-for-systematic-internalisers-and-investment-firms-trading-otc-and-tick-size-r/20.md) or [Article 21(1)](/mica.wtf/mifir/title-iii-transparency-for-systematic-internalisers-and-investment-firms-trading-otc-and-tick-size-r/21.md).
4. ESMA shall by 29 September 2024 establish and shall regularly update a register of all designated publishing entities, specifying their identity and the classes of financial instrument for which they are designated publishing entities. ESMA shall publish that register on its website.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://www.mica.wtf/mica.wtf/mifir/title-iii-transparency-for-systematic-internalisers-and-investment-firms-trading-otc-and-tick-size-r/21a.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
