<prompt> Translate the following text to EnglishLakini ikiwa muundo wa soko umebadilika sana, kwa hivyo sasa unajumuisha zaidi ya watoto wa boomers wanaowekeza na upeo wa miaka 20 au zaidi, hii haiwezi kubadilisha thamani ya hisa, kuongeza bei zao, na kupunguza malipo ya hisa?  <response>: But if the composition of the market has changed considerably, so that it is now composed largely of baby boomers investing with a 20-year--or greater--horizon, might this not change the valuation of stocks, bid up their prices, and lower the equity premium? 