GM, Genworth Financial, Express Scripts Big Movers

NEW YORK (AP) — Stocks that moved substantially or traded heavily Monday on the New York Stock Exchange and Nasdaq Stock Market:

NYSE

General Motors Corp., down 33 cents at $1.71

The Treasury Department has asked it for a bankruptcy plan by June 1. GM has said it would prefer to reorganize without bankruptcy.

Genworth Financial Inc., down 49 cents at $2.26

Shares fell further as an analyst downgraded the insurer after it last week nixed efforts to buy a Minnesota-based bank and failed to qualify for bailout funds.

Seagate Technology, down 31 cents at $6.34

The hard drive maker said third quarter sales will top expectations, but it will stop paying its quarterly dividend.

MEMC Electronic Materials Inc., down $2.76 at $16.18

The stock plunged following the silicon wafer supplier's disappointing sales outlook for the first quarter, announced last week.

Gannett Inc., up 31 cents at $4.06

Fund manager Ariel Investments LLC said in a SEC filing that it had more than doubled its investment in the media company.

Boeing Co., down $2 at $37.15

The airplane maker said it would cut production next year. Analysts responded by slashing profit expectations and stock price targets.

SPX Corp., down $9.72 at $43.91

The industrial equipment maker said the recession is hurting demand for its products and cut its earnings guidance for the year.

NASDAQ

Express Scripts Inc., up $7.64 at $56.81

The prescription benefits manager is buying health insurer WellPoint Inc.'s NextRX subsidies for $4.68 billion in cash-and-stock.