NEW YORK ( TheStreet) -- Several stocks trading near $5 were poised to move on above-average volume during Tuesday's session.

SciClone Pharmaceuticals ( SCLN) rose 8.3% to $3 in the premarket session after the company and partner Sigma-Tau announced positive preliminary results in a clinical study examining Zadaxin to enhance immune response to the H1N1 vaccine. According to investigators, Zadaxin treatment given with the H1N1 vaccine led to a "highly statistically significant increase" in the percentage of subjects who seroconverted at 21 days after vaccination, when compared to those who received the H1N1 vaccine alone. The 50-day average daily volume for SciClone is 320,000, according to Yahoo! Finance.

YRC Worldwide ( YRCW) shares were set to open higher after Standard & Poor's Ratings Services raised its corporate credit rating on the trucking company to CCC- from SD (selective default). Credit analyst Anita Ogbara also raised the senior unsecured issue-level ratings to CC from D on YRC's remaining notes that were subject to its exchange offer, as well as a 6 recovery rating, indicating negligible (zero to 10%) recovery of principal in a payment default scenario. Ogbara said that YRC'w liquidity position remains constrained, due to a $45 million maturity on April 15. The 50-day average daily volume for YRC Worldwide is 13 million shares.

Hersha Hospitality Trust ( HT) shares were indicated to open 11% lower after the company announced a public offering of 35 million common shares. The three-month average daily volume for Hersha Hospitality is 333,000, according to Yahoo! Finance.

Netlist ( NLST) was also set to start Tuesday's session lower after the company filed for a $30 million mixed securities shelf offering. The 50-day average daily volume for is 4.79 million.

KKR Financial ( KFN) should open lower after the company said it expects to record charges in the fourth quarter to total as much as $80 million due to declining value of its residential mortgage-backed securities portfolio and some corporate loans. As a result, KKR Financial said its fourth-quarter results could range from a loss of 5 cents a share to a profit of a penny a share, compared with the Thomson Reuters average estimate for a profit of 27 cents a share. The three-month average daily volume for KKR Financial is 1.69 million shares.

-- Written by Robert Holmes in Boston.

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