Probe paved way for broker to bolt: Knall’s exit from McDonald a boon for Stifel
The Indiana University graduate who runs St. Louis-based Stifel Nicolaus & Co. has known David Knall for years. So his mind began to whir late last year after an insider-trading probe sidelined Knall, one of the nation’s top-producing stockbrokers, from his post at McDonald Investments. By late January, Knall’s leave of absence from McDonald had run nearly two months, and it wasn’t expected to end until r eg u l a t o r s wrapped up their probe, a…