Angry Netflix investors upset that they did not receive advance warning the online and DVD rental movie service was facing the expiration of several important content contracts and would have to pay substantially more to renew them have launched a class action lawsuit against the company.

The City of Royal Oak Retirement System, which holds a substantial number of shares in the company, hired Robbins, Geller, Rudman & Dowd LLP, who filed the suit in U.S. District Court Friday on behalf of the pension fund and similarly situated investors.

The suit claims Netflix management misled investors with plans to grow the business while the company was actually preparing to significantly increase prices to cope with the increased licensing costs to stream content.

Netflix management in July announced it was effectively separating its streaming and DVD-by-mail businesses by charging individual subscription rates for each, resulting in a 60 percent rate hike for some subscribers.  Then it suggested it would spinoff its DVD rental business to its own division, to be called Qwikster.  Neither plan impressed customers, and led many to downgrade or discontinue service.  It did nothing for Netflix’s stock price either.  The stock tumbled from a July price of $291.27 to $94.79 last week.

The suit charges:

“At the beginning of the class period, Netflix was facing increasing competition for streaming business, and content providers were exploring new ways to distribute their content and/or maximize their licensing fees. Rather than fully disclose the devastating cost increases which were then threatening Netflix’s entire business, the defendants talked about [their] ability to grow.”

Several Netflix executives’ personal portfolios have grown as a result of selling their personal shares in the company, netting more than $90 million before the rate increase was announced, a fact the lawsuit also prominently mentions.