Firstrade (FT) 全面零佣金... - 理財
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By Victoria
at 2018-08-24T11:44
at 2018-08-24T11:44
Table of Contents
推 Oalnenya: 同請教ast2大,同股票同交易所難道bid/ask spread在不同 08/24 01:52
→ Oalnenya: 券商會不同嗎? 08/24 01:53
推 sean2449: Link? 法規應該有規定券商提供NBBO 08/24 02:06
SEC規定券商要保證客戶至少能在NBBO成交
但有些方法可以取得比NBBO更好的價格,而券商不一定要提供
比如odd lot order(少於100股的order)不見得會被送進交易所
從而NBBO的BID/ASK spread間往往會有些你看不到的order
券商可以設法撮合這些order,使客戶獲得更好的成交價
也可以從中賺取價差,只給客戶NBBO的價格
券商賣資料流給高頻交易業者也早就不是新聞了
另外,要追蹤券商在NBBO上,是否有遵循SEC的規範,也是很困難的。
--
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Here’s good luck to the man in the sky,
Here’s a toast to the dead already,
Three cheers for the next man to die.
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