NEW YORK, Aug 24 (Reuters) - The two main hedge fund trade groups have joined a growing chorus of stock market participants asking U.S. regulators to reign in “unreasonable” data fees charged by some exchanges, which they said restrict trading and harm competition. The Managed Funds Association and the Alternative Investment Management Association, in a petition dated Aug. 22, asked the U.S. Securities and Exchange Commission to conduct a full review of market data costs and to require exchanges to be more transparent about the fees they charge.