Monday's Winners & Losers: Standard Pacific

Shares of NS Group(NSS Quote) were among the NYSE's winners Monday, soaring 39% after the maker of oilfield tubular steel products agreed to be acquired by Ipsco(IPS Quote) for $1.46 billion in cash.

Ipsco will pay $66 a share for NS, representing a 43% premium to the stock's closing price of $46.15 on Friday. "We believe the transaction with Ipsco serves the best interests of our shareholders, providing them with significant immediate value," NS said in a press release. The deal is expected to add to Ipsco's earnings in 2007. The companies expect the transaction to close by the end of 2006. Shares of NS Group were trading up $18.12 to $64.27, while shares of Ipsco fell $3.16 to $90.04.

Standard Pacific(SPF Quote) shares declined 3% after the homebuilder warned that third-quarter earnings would be "materially below" its previous guidance. In July, the company forecast earnings of 80 cents to 85 cents a share for the third quarter. Analysts polled by Thomson First Call project earnings of 81 cents a share. Standard Pacific blamed the shortfall on deteriorating market conditions. The company also said it expects to lower its full-year earnings and delivery guidance when it reports its third-quarter results at the end of October. Shares were trading down 69 cents to $22.14. ...