While it was a good month overall for mortgage technology stocks, which have seen continuous declines since last year, online home buying aggregator sites were the clear winners after announcing lucrative first quarters. Online home buying/aggregators saw across-the-board increases between April 4 and May 4. Homestore had the greatest increase among all stocks tracked by Inside Mortgage Technology. Its price went up 67.0 percent, from $21.50 to $35.90.