EMH - under reaction to events

Discussion in 'CM2' started by Min, Apr 12, 2024.

  1. Min

    Min Member

    hi,

    Can someone please explain to me why for an under-reaction:

    - there would be abnormal negative returns following a merger?
    - abnormal excess returns following a de-merger?

    Thanks in advance,
    Min
     
  2. msm

    msm Keen member

    The market over estimates returns due to a merger, so when things actually pan out, its way below their expectations. i.e. the market underreacted to the negative effects of a merger. No merger is a 100% beneficial.
    Similarly, it underreacts to the upsides of a de-merger, and doesn't expect enough return. So returns exceed expectations.
     
  3. Min

    Min Member

    thank you so much, this makes a lot of sense now
     

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