Soaring markets and the rise of shareholder activism have compelled companies to plan spinoffs at a rate unseen since at least 2008. There’s no end in sight for the frenzy as these new stocks keep finding ways to beat the market. More than 100 companies this year have announced plans for spinoffs on U.S. exchanges, a 54 percent increase from the same time last year, according to data compiled by Bloomberg. This momentum could continue regardless of how the broader market performs, according to Jonathan Morgan, a deals analyst at The Edge Consulting Group.