John Hancock Mortgage-Backed Securities ETF (NYSEARCA:JHMB – Get Free Report) was the target of a significant increase in short interest during the month of July. John Hancock Mortgage-Backed Securities ETF Stock Up 0.2%JHMB stock traded up $0.05 during midday trading on Tuesday, hitting $21.80. Get John Hancock Mortgage-Backed Securities ETF alerts:Hedge Funds Weigh In On John Hancock Mortgage-Backed Securities ETFSeveral hedge funds and other institutional investors have recently made changes to their positions in the business. About John Hancock Mortgage-Backed Securities ETFThe John Hancock Mortgage Backed Securities ETF (JHMB) is an exchange-traded fund that is based on the Bloomberg U.S. MBS index. Featured ArticlesReceive News & Ratings for John Hancock Mortgage-Backed Securities ETF Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for John Hancock Mortgage-Backed Securities ETF and related companies with MarketBeat.com's FREE daily email newsletter.