benefits and stocks

Hello.

I have some questions if someone would be kind to answer.

I get ESA and DLA due to mental health problems.

If I invest my personal money in stocks will this affect my benefits?

I am talking about any aspect of stocks - buying and selling - also if a company happens to pay a dividend will this count as income and affect my ESA? I don't think it affects DLA because this is help for any disabled person regardless of their assets or employment status.

Thank you