求助啊

区别不大，都是发生金融关系产生的费用。但Trading 是契约性交易，是主动的。Transaction 是更广义的，任何产生金融关系都可以称为Transaction。 譬如， 转帐、期权到期、等都会导致一个Transaction，但这些都不是Trade。懂啦，美女？

ok，谢谢

Transaction costs can be something directly related to trading such as commission, fees, taxes

Trading cost is a broader concept, such as market spread (e.g. bid-ask spread), market impact (冲击成本) etc. Off course transaction cost can also be regarded as a kind of trading cost.

感谢楼上，搞明白了