Complex sentence: Dillon, Read & Co. was a prominent American investment bank from the 1920s into the 1960s, it was purchased by Swiss Bank Corporation (SBC) in 1997 and merged with London investment bank S.G. Warburg & Co. to become Warburg Dillon Read.
Split into simpler sentences: Dillon, Read & Co. was a prominent American investment bank from the 1920s into the 1960s. It was purchased by Swiss Bank Corporation (SBC) in 1997 and merged with London investment bank S.G. Warburg & Co. to become Warburg Dillon Read.