By Martin Baccardax Netflix shares were on a bit of a comeback Monday following an upgrade to ‘buy’ from analysts at Citigroup and a $20 million purchase from co-CEO Reed Hastings. Netflix (NFLX) – Get Netflix, Inc. Report shares jumped higher Monday after analysts at Citigroup boosted their rating on the stock and details emerged of a $20 million purchase by CEO Reed Hastings. In a note providing updates on Netflix and Spotify (SPOT) – Get Spotify Technology SA Report, Citigroup analyst Jason Bazinet lifted his Netflix rating to ‘buy’, from ‘neutral’, citing the streaming group’s ability to r…