By Dan Weil The asset manager bought shares of the graphics-software specialist and the electric-vehicle leader as both stocks have dropped. The prominent asset manager Cathie Wood, chief executive of Ark Investment Management, bought shares of online content services provider Adobe Systems (ADBE) – Get Free Report Jan. 9. That may be Ark’s first trade in the stock for months. She also repeated her Jan. 6 trades of purchasing electric vehicle titan Tesla (TSLA) – Get Free Report and selling semiconductor giant Nvidia (NVDA) – Get Free Report. Ark Next Generation Internet ETF (ARKW) – Get Free …