Just a moment ago would have answered that obviously no, because why would they do that? It's literally SEC's job to define them. That's why they hired experts in there.
Imagine some ignorant randos in congress who wouldn't have a clue what are even the ramifications of such change.

But with latest court’s Chevron ruling i am guessing they don't need to hear scientists, economists and other specialists for changing regulations. So i guess they can do freaking anything now wihtout consulting experts about the ramifications of it.

Even still, i don't know whom it would benefit. Even if that would be changed to security, reason would be because of protection of investors. But that Chevron ruling, which is wet dream of republicans, is signaling that they want to diminish customer and worker protection, and lower standards and responsibility for safety of the food, medical products, enviroment and especially recuirements for financial sector, so i can't see any reason why they suddenly would change it.