Why Is Zillow Group ( $Z) Stock Down -5.31% Today? The primary catalyst was a KeyBanc downgrade to Sector Weight from Overweight, which followed Zillow's weake

Why Is Zillow Group ( $Z) Stock Down -5.31% Today? The primary catalyst was a KeyBanc downgrade to Sector Weight from Overweight, which followed Zillow's weaker-than-expected third-quarter results and a "significant reset to the forward outlook."