Shares of Netflix were briefly under pressure as investors digested the streaming giant's blockbuster agreement to acquire pieces of Warner Bros. Discovery , a move some say could weigh on the stock for some time despite long-term strategic upside. Netflix shares fluctuated between small gains and losses Friday after it announced a deal to buy WBD's film studio and streaming service, HBO Max, bringing an end to a dramatic bidding process that saw Paramount Skydance and Comcast also vying for the legacy assets. Rich Greenfield, LightShed Partners co-founder, believes the economics of the transaction are likely to weigh on Netflix before they help in the long term. "Look, the math is going to hurt Netflix for a while. There's no doubt," Greenfield said Friday on CNBC's "Squawk Box." "This is

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