The Globe and Mail Adam Mayers Published March 5, 2021 Handout At the age of 58, when most people start looking ahead to retirement, Catherine Wood launched an investment management company in New York to capture the potential of a coming wave of technological change. Almost seven years later, Ark Investment Management LLC has grown from a US$15-million venture into one in which the flagship exchange-traded fund (ETF) manages about US$18-billion in assets. Ark Innovation ETF ARKK-A is the largest actively managed ETF on any global exchange. It ranked in the first percentile among 604 funds in its class in 2020, according to Morningstar Research, with a 152.8-per-cent return. The ETF has struggled thus far in 2021, up only 0.5 per cent year-to-date.