Small stocks were mixed and somewhat flat on Tuesday before ratcheting up late in the trading day, and one of the bigger winners was 24/7 Real Media ( TFSM). Shares surged more than 20% after the New York Post reported that Microsoft ( MSFT) is considering a bid "in the $1 billion range" for the New York-based Internet-marketing company. 24/7 shares were up $2.05 to $12. Microsoft was lately rising 1.1% to $30.28. Florida's Syniverse ( SVR), which sells services to the wireless-telecom industry, shot up 18.6% at $12.23 on word first-quarter cash income gained 23.5% on last year to 21 cents a share -- 3 cents higher than the mean Street projection, as per Thomson Financial. Drew Industries ( DW), a White Plains, N.Y., maker of recreational-vehicle components, vaulted 16.6% to $33.55 after blowing away first-quarter estimates, according to Thomson Financial, with earnings of $9.6 million, or 44 cents a share. Also surging on better-than-expected first-quarter results were Wakefield, Mass.-based business-services firm American Dental Partners ( ADPI), gaining 14.3% to $24.44; Connecticut's Arch Chemicals ( ARJ), 12.1% higher at $33.87; and Bentley Pharmaceuticals ( BNT), of Exeter, N.H., up 10.4% to $10.54. Acusphere ( ACUS), on the other hand, was among the biggest small-cap losers. The Watertown, Mass., drugmaker lately tanked nearly some 29% at $2.84 on disappointing results from a late-phase clinical trial of Imagify, which is proposed to detect coronary artery disease. The trial failed to achieve one of its primary endpoints -- specificity -- despite achieving the other primary endpoints of accuracy and sensitivity.