a new version of Finance-Quote-Yahoo has been uploaded to hackage that breaks an api of the previous version for getting bulk historical quote information. specifically, notice this updated type signature: getHistoricalQuote :: QuoteSymbol -> Day -> Day -> QuoteFrequency -> IO (Maybe [HistoricalQuote]) the QuoteFrequency can be one of Daily, Weekly, Monthly or Dividend old code using this function will break, which is why i am notifying the list explicitly of this upload. since the versioning is still 0.* and the library is listed as experimental, users should expect changes until a 1.* version is released. brad