Tuesday's Small-Cap Winners & Losers

Small-cap stocks pulled upward with the rest of the market Tuesday amid climbing names like Simulations Plus (SLP Quote), which jumped 13% on positive results for the quarter ended May 31.

The Lancaster, Calif., company, which makes software for pharmaceutical research and education, posted a profit of $782,000, or 9 cents a share -- 4 cents higher per share than last year -- on revenue that leapt 47.1% to $2.6 million. The analyst who follows the company was looking for just 7 cents a share on sales of $2.3 million, as per Thomson Financial. Shares closed up $1.30 at $11.30.

Oil-and-gas driller Penn Virginia (PVA Quote) was also in the green after closing two property acquisitions valued together at $32.5 million. One, located in east Texas, contains estimated proved reserves of 19.5 billion cubic feet of natural gas equivalent; the other, in Mississippi, has 11.2 Bcfe. Penn has a roughly 76% average net revenue interest in the former property, and about 80% in the latter. ...