Movers roundup: Shares of Tetra Technologies jump, Taser stock slides on analyst downgrade

Movers roundup: Tetra Technologies, Taser

Among the stock activity stories for Monday, March 1, from AP Financial News:

COLUMBUS, Ohio (AP) — Shares of Tetra Technologies jumped after an analyst upgraded the oil and gas services company, saying it is one of the cheapest stocks among those in the industry.

NEW YORK (AP) — Shares of Taser International Inc. sank after a JPMorgan analyst downgraded the maker of stun guns and said the stock is trading at fair value.

WASHINGTON (AP) — Shares of AsiaInfo Holdings Inc. rose after Goldman Sachs upgraded the Chinese telecommunications and information technology company, citing a strong growth outlook.

NEW YORK (AP) — Shares of Perrigo Co. jumped to their highest point in a decade after the company said it would buy Orion Laboratories for $48 million in cash, expanding its market in Australia and New Zealand.

NEW YORK (AP) — Shares of online game operator Shanda Games Ltd. and of controlling shareholder Shanda Interactive Entertainment Ltd., dropped after Shanda Games projected disappointing first-quarter sales.