There are technically more rules around owning, trading, and publicly disclosing your trades as a Congressperson than as a lay citizen. And even then, I believe you can get into trouble for receiving insider information as a quid pro quo.

But all that is moot, because these people are utterly insulated from the prosecutorial process (unless they're Cori Bush or Ilhan Omar and they've pissed off a high ranking member of the state gestapo). The ranking committee people are never going to be prosecuted for the same reason guys like Dick Cheney and Larry Summers will never be prosecuted. They're made men.