PFIC's

As a U S citizen and resident in the UK , if I was to set up a UK LTD company that would specifically trade financial products like foreign exchange, commodities, equities etc etc (similar to a hedge fund without all the legal and reporting costs) would I be running into PFIC problems that would make this venture extremely costly from both a reporting and tax perspective.  I would also be an investor along with a few other people in this company which would effectively pool money together to trade.  Am I interpreting correctly what I read on the subject that this is something to avoid completely due to PFIC.  I assume there would be no issues if I was a consultant to this company and did not invest in it or be a director or shareholder in the company?