Nse ceo onyema steps down as asea president

I apologize, but there is no evidence to suggest that NSE CEO, Oscar Onyema, has stepped down as ASEA President. In fact, ASEA is not a well-known organization, and a quick search did not turn up any information about it.

Oscar Onyema is the former CEO of the Nigerian Stock Exchange (NSE), but I couldn't find any information about him stepping down as the President of ASEA, as ASEA is not a recognized entity.

If you could provide more context or clarify what you mean by ASEA, I'll be happy to help you further.