buy side

I am a senior looking to get into trading. Unfortunately I do not have an offer on the sell-side, but know a few people on the buy side that have offered to help out.

How does trading for a large buy-side firm like Fidelity compare to trading for a bank? Sell side trading seems a lot more interesting as you are responsible for producing revenue. At most buy-side firms, do traders take risks or are they just executing for the PMs? Thanks a lot.

I've got a dinner coming up with 5 or 6 other Duke juniors with people from Fidelity. Anyone know anything about Fidelity equity research? How can I turn this into an internship? Any help would be appreciated here.