Analyst Action: New Stock Ratings

Among the new equity ratings issued Wednesday by Wall Street analysts:

* Du Pont (ticker: DD; close and change: $69.94, down 81 cents) was rated “sell” in new coverage by ING Baring Furman Selz.

* Irvine-based Diedrich Coffee Inc. (DDRX; $6.06, down 13 cents) was rated “buy” by BancBoston Robertson Stephens.