This Sept looks doing great so far. In history, September looks terrible for all major indexes. Jan and Dec are usually great. To find out how bad or how good a month of year is, see the attached doc. Which month is the best/worst of the year for major indexes in history? ----------------------------------------------------------------------- I did not find satisfying information anywhere. I tried to do it myself using program aq. Here just share my results with anyone here interested. The results are based on data I currently have, Nasdaq from 1985 to current, Dow from 1960 and S&P500 from 1960. I use 5 criteria to rank months from Jan (1) to Dec (12). These criteria are average percentage change, best case percentage change, worst case percentage change, median percentage change, and winning rate. A short summary here. By average percentage change, the best month for Nasdaq is Jan (3.93%) following by Dec (2.77%). The worst month for Nasdaq is Sept (-1.17%), July (-0.25). For Dow, the best April (1.67%), Jan (1.61%). The worst month for Dow is Sept (-1.22%), June (-0.28%). The best month for S&P 500 is Jan (1.59%), following by Nov/Dec (1.54%). The worst month for S&P 500 is Sept (-0.85%), June (0.07%). ........ aqtrader