However, if a user wanted to replay every transaction on the Hong Kong stock exchange, he would have to reprogram the application to run it in parallel across multiple processing cores.

FORBES: Software Programmers Lag Behind Hardware Developments

In the past, the fees were bundled into the exchange rate on each transaction and not explicitly shown on statements.

BBC: Paying the price for foreign transactions

Thain, a former banker at Goldman Sachs Group (nyse: GS - news - people ) (which incidentally advised the two parties in the transaction), has been studying ways to boost electronic trading on the exchange without stepping on the toes of its floor traders.

FORBES: Magazine Article

Nasdaq charges a transaction fee of about 30 cents for each contract that is executed on its exchange.

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