A good way to treat the risk: If, instead of the stock, you had been given the equivalent cash value (at today's prices) - would you choose to invest all of it

A good way to treat the risk: If, instead of the stock, you had been given the equivalent cash value (at today's prices) - would you choose to invest all of it in GOOG stock? I would use that way of thinking to determine what amount of stock I wished to hold.