Small-Cap Winners & Losers: Standard Pacific

Updated from 1:24 p.m. EDT with new stock prices

Small-cap stocks posted hesitant gains on Tuesday as investors returned from an extended holiday weekend.

Among the gainers, Standard Pacific (SPF Quote), an Irvine, Calif.-based homebuilder, saw shares rise 49.1% to $3.31. The company announced it had secured $530 million in equity funding from MatlinPatterson. Standard Pacific said the move will strengthen its balance sheet and enhance financial flexibility.

Meanwhile, Quantum Fuel Systems (QTWW Quote), an alternative energy company also headquartered in Irvine, said its German solar partner Asola got a $17 million deal to supply Sunworx with photovoltaic modules. Shares gained 16.3% to $2.36.

Austin, Texas' Guaranty Financial (GFG Quote) jumped 16.2% to $6.31 on news that it had gotten $38 million in capital from Robert Rowling, acting through TRT Financial Holdings.

Jamba Juice (JMBA Quote) added 13.6% to $2.50 ahead of its earnigns report after the market close. The Emeryville, Calif., juicer announced a joint venture with Nestle to launch a ready-to-drink line of beverages.

On the losing side, Flotek Industries (FTK Quote), a Houston, Texas-based provider of products and services to the energy and mining industries, took a 10.3% tumble to $17.20. The company lowered its 2008 EPS guidance to $1.12 to $1.22 from a previous look of $1.50 to $1.60. The Street is looking for $1.24 a share.

Finally, United Community Banks (UCBI Quote), a multibank holding company, fell 13.5% to $11.50 on a Sterne Agee downgrade to sell from hold.

More broadly, the Russell 2000 was up 1.4% to 734.23, and the S&P SmallCap 600 gained 1.3% to 388.04.