I am looking to switch jobs soon and will probably go into Finance with the intension of trading the European session before work. I believe there are some sort of restrictions for holding outside investment accounts while working for Financial institutions. Can any of you shed some light on this? Is this usually company specific policy or some sort of regulation pertaining to certain types of companies?

Thanks in advance

I think most companies will allow you to as long as you tell them. If you work for a brokerage firm, you need to move your accounts to them. Also, usually your clearinghouse will usually ask for your current employment information if you are not a self employed trader.

Depends on what you're doing. If you're on the trading floor, they won't really want you to (normal policy is you have to okay things, but that's generally for buying shares once in a blue moon, probably be a flat no for day trading).

It's a bit of both for regulation and company policy. Sorry can't be of more help, but might be able to if you're more specific as to what you would be doing.