The key domestic benchmarks are likely to open lower today tracking a weak trend across Asia as investors stayed on the sidelines ahead of the policy meet of the Bank of Japan (BOJ) and the European Central Bank (ECB) today, with the ECB tipped to take further action to stem deflation and revive the 18-member Euro area economy. China’s Shanghai Composite and Hang Seng were trading in the red amid caution ahead of key global monetary policy decisions. Japan’s Nikkei 225 fell ahead of the BOJ decision.