The markets opened weak on the back of negative Asian cues. At 9:58 am, the Sensex was trading at 12844 down 61 points and the Nifty was trading at 3728 down 11 points.

Top losers on the indices were Suzlon Energy and SBI
Asian stocks were trading lower, Japan's Nikkei fell 1.35%, South Korea's Seoul Composite was down 0.92%, Singapore's Straits Times plunged 1.06%, Taiwan's Taiwan Weighted tumbled 1.24% and Hong Kong's Hang Seng was down 0.31%.

Market cues:

FIIs net buy USD 107 million in equity on October 26

NSE F&O Open Interest up by Rs 3,596 crore (Rs 35.96 billion) at Rs 36,129 crore (Rs 361.29 billion)

Highest ever single day Open Interest build-up

F&O cues:

Futures Open Interest up by Rs 2,103 crore (Rs 21.03 billion); Options Open Interest up by Rs 1493 crore (Rs 14.93 billion)

Nifty Futures add 17.5 lakh shares in Open Interest

Nifty Futures at 9-point premium

Nifty Open Interest Put-Call ratio down a tad to 1.45 from 1.46

Nifty Calls add 12 lakh shares in Open Interest; Puts add 17 lakh shares

Nifty 3700 Put adds 7.6 lakh shares in Open Interest

Nifty 3800 Call adds 5 lakh shares in Open Interest

Nifty 3700 Call adds 3.7 lakh shares in Open Interest

Nifty 3750 Put adds 2 lakh shares in Open Interest

Chat with market expert Pranav Sanghavi every Tuesday

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