Endeavour International ( END) shares were climbing 6.6% to $1.93 on Tuesday. The Houston-based developer of energy reserves announced that is was no longer pursuing an offer for Ithaca Energy after Ithaca declined. NGAS Resources ( NGAS) was taking on 5.5% of losses, dropping shares to $7.67 Tuesday. Based out of Lexington, Ky., NGAS specializes in the exploration and production on natural gas. Today, the company provided a midyear update saying that production was on target with expectations.