Investment firm Gerber Kawasaki's co-founder, Ross Gerber, wants Tesla Inc. TSLA CEO Elon Musk to buy more equity in the EV giant after $1 billion stock purchase, which led to the stock surpassing the$420 price mark briefly.Why Take From Shareholders, Asks Ross GerberTaking to the social media platform X on Monday, Gerber shared his thoughts on the stock rally following Musk's purchase in a series of posts."If he can afford to buy the stock why doesn't he just buy the other 12% he wants instead of taking i ...