The latestFilingForInstanceFlag is used when there are multiple records in the ciqFinInstance table that have the same financialPeriodId and the same filingDate.This would occur, for example, when a company filed its press release and its 10-Q on the same day. The latestFilingForInstanceFlag flag shows you the best instance to use if you are trying to select between these two instances. A flag indicating that this instance is the latest one for the financial period. If there are multiple instances, 1=the latest filing that exists for the financial period and 0= other instances. instanceTypeId=4 (Backward column of a press release) are excluded from consideration if instanceTypeIds of 2 or 3 exist (Original Instance or Encore) for that financial period, as this would be replacing a complete source (e.g., an SEC filing) with an incomplete source (e.g., a press release), To view the latestbest source for a company, always screen for latestForFinancialPeriodFlag=1