symbol,start,end,rows,raw_sorted,raw_duplicate_dates,invalid_ohlc_rows,abs_daily_return_gt_50pct,max_calendar_gap_days,zero_or_missing_volume_rows,total_return_available,pit_fundamentals_available,corporate_action_table_available SPY,2007-01-03,2026-03-20,4834,False,0,6,0,5,0,False,False,False AAPL,2007-01-03,2026-03-20,4832,True,0,0,0,5,0,False,False,False AMZN,2007-01-03,2026-03-20,4832,True,0,0,0,5,0,False,False,False NVDA,2007-01-03,2026-03-20,4832,True,0,0,0,5,0,False,False,False TSLA,2010-06-29,2026-03-20,3956,False,0,0,0,5,1,False,False,False AIG,2007-01-03,2026-03-20,4832,True,0,0,3,5,0,False,False,False AAMRQ,2012-01-05,2013-12-06,484,True,0,0,1,5,0,False,False,False