Asking for a friend: I would be curious to see a teshuva explaining under which conditions insider trading is kosher.
This involves explicitly breaking a contract that a person signs and also ensuing hillul Hashem caused by almost inevitable SEC action.
Is one allowed to break a contract for no good reason?
And even if there is some heter for the contract – mybe the teshuva was written before (or was unaware of) SEC deploying algorithmic search for irregularities in trading.