You don't need to buy her picks, but it's worth understanding them. Cathie Wood's commitment to buying shares of businesses working on disruptive innovations, via her ARK Innovation ETF and ARK Genomic Revolution ETF, makes her investing style very much on the riskier side of the spectrum -- especially when she invests in already risky areas like biotech. But if her theses are correct, the upside to investors could be tremendous, assuming they can tolerate what might be a very long and bumpy ride between bu ...