The key points from the document are: 1) Indian stock markets ended lower for the second consecutive session led by losses in realty, banking and oil & gas stocks, closing down 1% at a one-month low on the September futures and options expiry day. 2) The Nifty futures contract found support around 7950 in the early session but saw a sharp fall later in the day, closing around the 7900 level. 3) This suggests the correction in markets may continue in the upcoming October series with support seen between 7940-7900 and immediate resistance at 8040 and 8090.