Small-cap stocks as well as the broader market experienced an up-and-down Tuesday session before falling slightly around midday. The

Russell 2000 Index

was down 1% to 675.83, while the

S&P 500

fell 0.5% to 1,266.92.

Shares of

Circor International

(CIR) - Get Report

jumped 20% to $60.30 after the Burlington, Mass., maker of fluid control products forecast second-quarter earnings of $1.10, up from previous projections of 74 cents to 83 cents a share.

FX Energy

(FXEN)

was up 19% to $5.89. The Salt Lake City oil and gas concern reported that one of their primary wells is currently drilling and doing better than expected.

Also rising was

A-Power Energy Generation Systems

( APWR), the San Diego-based maker of power generation systems. Shares were up 15% to $26.40 after the company announced Wednesday it had finished phase one construction of the largest wind turbine production facility in China.

Atlanta-based museum exhibitions company

Premier Exhibitions

(PRXI)

fell 17% to $3.28 a day after posting a first-quarter loss that missed analysts' expectations. On Wednesday, Dougherty downgraded the stock to neutral, voicing concern about the company's ability to "generate meaningful profitability with an expense structure that appears to be spiraling out of control."

Arris Group

(ARRS) - Get Report

fell 16% to $7.44 after the company forecasted weaker-than-expected second-quarter EPS of 13 cents to 17 cents. Analysts polled by Thompson Financial had been looking for EPS of 16 cents.

This article was written by a staff member of TheStreet.com.