Small stocks generally hung on the lower rungs of the broader market Thursday, but several tech names -- among them Vasco Data Security International ( VDSI) -- helped keep things afloat. The Illinois-based security-software company soared 27% to $22.42 after beating first-quarter estimates by 2 cents a share with profits -- 13 cents a share, or $5 million -- that rose 324% year over year. Sales gained 93% on last year to $26.4 million and bested Street targets, according to Thomson Financial. Innodata Isogen ( INOD), another tech stock, said it has procured new projects that should bring in revenue of roughly $10 million in 2007. Shares of the Hackensack, N.J., information-technology firm surged 26% to $3.65. Flat-panel-display maker Innovative Solutions & Support ( ISSC), of Pennsylvania, gained 17% to $28.54 after saying its order backlog had vaulted 51% to $42.7 million from last year, despite widening fiscal second-quarter losses that were far short of Street targets. Meanwhile, Georgia's Pediatric Services of America ( PSAI), a home health-care company for infants and children, bounced 15.6% on word Portfolio Logic -- which already has a 14.9% stake in the company -- will take it private for $16.25 a share in cash. Shares added $2.14 to $15.84. Genesis Energy ( GEL), based in Houston, shot up 20% to $26.64 on word it will buy "the assets of five energy-related businesses" from the Davison family of Ruston, La., for some $560 million in cash and stock.