Piper Jaffray analyst Peter Appert says a day with the new management team has piqued his interest in Houghton Mifflin Harcourt's "value story." The company should see a "meaningful rebound" in profitability in the context of expected 2019 revenue growth, Appert tells investors in a research note. The analyst boosted his price target for the shares to $13 from $12 but keeps a Neutral rating on the name. He wants to see evidence of the company's ability to leverage a stronger 2019 industry environment into improved free cash flow before getting more constructive on the shares.