Derivatives

Contract Specifications For Hang Seng Index (HSI) Options _____________________________________________________________________ The following Contract Specifications shall apply to the Hang Seng Index (“HSI”) Option Contract**:Underlying Index/Index Hang Seng Index (the share price index of that name compiled, computed and disseminated by Hang Seng Indexes Company Limited).* HK$50 per Index point.* (For Short-dated Options) Spot Month, the next two calendar months, the next three calendar quarter months (i.e. quarter months are March, June, September and December) and (for Longdated Options) the next five months of June and December (see Note 1). (For Flexible Options) Any calendar month up to the most distant month specified for Long-dated Options (see Note 2).

Trading Hours 9:15 a.m. – 12:00 noon and 1:30 p.m. – 4:15 p.m. (Hong Kong time) (prior to 5 March 2012) 1:00 p.m. – 4:15 p.m. (Hong Kong time) (on or after 5 March 2012) There is no afternoon trading session on the eves of Christmas, New Year and Lunar New Year. Trading Hours on Expiry Day 9:15 a.m. – 12:00 noon and 1:30 p.m. – 4:00 p.m. (Hong Kong time) (prior to 5 March 2012) 1:00 p.m. – 4:00 p.m. (Hong Kong time) (on or after 5 March 2012) There shall be no afternoon trading session if the Expiry Day falls on Christmas Eve, New Year’s Eve or Lunar New Year’s Eve

Contract Multiplier Contract Months

Trading Method

The Exchange’s Automated Trading System (HKATS). The Business Day immediately preceding the last Business Day of the Contract Month. Option Premium is quoted in whole Index points.

Expiry Day

Option Premium

SIO - S - 1

Contracted Value

Option Premium multiplied by the Contract Multiplier. Strike Prices shall be set as follows: HSI (Index points) Short-dated Options Below 2,000 At or above 2,000 but below 8,000 At or above 8,000 Long-dated Options Below 4,000 At or above 4,000 but below 8,000 At or above 8,000 but below 12,000 At or above 12,000 but below 15,000 At or...