While NAB is the big fish in business banking, Vacy-Lyle says CBA is also keen to cut Macquarie down to size, by sharpening its focus on the real estate market. While NAB is the big fish in business banking, Vacy-Lyle says CBA is also keen to cut Macquarie down to size, by sharpening its focus on the real estate market. Business / Banking & finance Sydney Morning Herald – Latest News