The firm has a $43.price target on the stock. Nomura's analysts noted that the move was a valuation call.
The stock is up 3.64% to $31.62 in pre-market trade.
Zuckerberg calls Musk's doomsday interpretation 'pretty irresponsible.' Musk calls Zuckerberg's understanding 'limited.'
Twitter said that the incident was an accident.
One leading tech analyst says YouTube is worth 'at least' $75 billion.
News site ATTN: and ABC will use ABC News' footage and equipment to produce stories audiences will find appealing.