The Singapore Exchange (SGX) will lower the minimum bid size for securities on July 4, 2011 and lower trading costs for investors, ACN Newswire reports. The move may lead to a tightening of bid-ask spreads by nearly 80%, resulting in around $1.4 billion in annual savings for Singapore.

SGX will expand the Forced Order Range for all securities to +/- 20 bids from +/- 10 bids across all price ranges. The changes will be applicable to all securities traded on the SGX except exchange-traded funds, loan stocks and bonds.

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