Movers Roundup: Rambus, Cincinnati Bell

Among the stock activity stories for Tuesday, Sept. 1, from AP Financial News:

PHILADELPHIA (AP) — Shares of memory chip designer Rambus Inc. plunged after a California judge delayed a lawsuit brought by the company against rival chip makers.

NEW YORK (AP) — Shares of Cincinnati Bell Inc. lost ground after a Raymond James analyst downgraded the stock, citing the company's rising stock price and a recent promotional deal on Internet and phone service.

NEW YORK (AP) — Shares of clinical lab services company Laboratory Corp. of America Holdings slipped after a Leerink Swann analyst downgraded the stock partly due to valuation.