It's harmful to the industry overall, since it prevents people from executing trades to help correctly price companies. We should still discourage and ban it.

It's harmful to the industry overall, since it prevents people from executing trades to help correctly price companies. We should still discourage and ban it. Outside of what the market as a whole does, there's still the question of who benefits from it. Insider trading incentivizes some shitty behavior and some pretty major principle-agent problems.