Among the stock activity stories for Tuesday, June 9, from AP Financial News:

NEW YORK (AP) ¿ Shares of Rigel Pharmaceuticals Inc. jumped after a Rodman & Renshaw analyst gave the stock a positive rating, citing the potential for a developing rheumatoid arthritis drug to compete in the market.

NEW YORK (AP) ¿ Shares of Mueller Water Products Inc., which makes flow control products, rose after an analyst upgraded the shares on a recent decline in price, prospects for favorable changes to the company's loan agreement and the likelihood that product demand is set to climb.

PORTLAND, Ore. (AP) ¿ Shares of regional grocer Spartan Stores Inc. jumped in trading following an upgrade by a Jeffries & Co. analyst.

NEW YORK (AP) ¿ Shares of SEI Investments Co. advanced after an analyst upgraded the investment manager and processor, citing improving sales and recent strength in the equity market.

Copyright 2009 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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