, an Internet infrastructure company, was up 2.5% at midday after three analysts began coverage. The stock earlier had slipped to a 52-week low of $6.69.
Morgan Stanley Dean Witter
started Riverstone with an outperform and a price target of $17.
J.P. Morgan Chase
gave it a buy rating and a target of $16.
Salomon Smith Barney
assigned it an outperform rating.
Riverstone was spun off in February from