Updated from 12:56 p.m. EDT with new stock prices

Small-cap stocks were experiencing modest losses on Tuesday, with investors concerned over energy prices in spite of a positive ISM number. The Russell 2000 was gaining 0.3% at 691.45, and the S&P SmallCap 600 was up 0.1% to 365.36.

Taking on losses was

Mindspeed Technology

( MSPDD), which fell 9.6% to $3.98. The semiconductor solutions supplier, based out of Newport Beach, Calif., completed a 1-for-5 reverse stock split on Monday. On Tuesday, Mindspeed began trading on a split-adjusted basis.

Balchem

(BCPC) - Get Report

was seeing positive trading action, moving 7.4% to $24.85, on Tuesday. The New Hampton, N.Y.-based provider of specialty ingredients and products worldwide was added to the S&P SmallCap 600 GICS Specialty Chemicals Sub-Industry index.

Modine Manufacturing

(MOD) - Get Report

was rocketing 8.4% to $13.41 after it was upgraded to buy from hold by KeyBanc Capital Markets. Analyst Andrew DeAngelis said: "We believe that Modine shares have found a bottom and now represent an attractive investment proposition." Operating out of Racine, Wisc., Modine is an auto parts manufacture specializing in thermal management systems.

SuperGen

( SUPG) was getting mauled during Tuesday's trading session, lowering 14.6% to $1.75. As reported by

TheStreet.com

's Elizabeth Trotta, the Dublin, Calif.-based pharmaceutical company announced a failed drug trial. According to preliminary data from the study, the drug Dacogen did not demonstrate a statistically significant advantage.

Los Angeles technology provider

Rentech

(RTK)

dropped 5.8% to $1.79 in early trading on Tuesday. On Monday, the firm announced Merrick Kerr's resignation from his position as the chief financial officer. Chief operating officer, Douglas Miller, will replace Kerr on an interim basis until a replacement is found.

Shooting up 9.4% to $4.52 was

VeraSun

( VSE). The South Dakota-based producer of ethanol and related products named Duane Gilliam, a VeraSun director, as its nonexecutive board chairman. His predecessor, Gordon Ommen, resigned "to focus on other business opportunities," according to VeraSun.

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