德美利證券(TDA)的執行效率比羅賓遜證券好上一倍
https://www.wsj.com/articles/sec-favors-midpoint-prices-on-investor-stock-trades-in-rules-overhaul-11666922028Still, brokerages are uneven in their ability to deliver midpoint prices, according to an academic study released in August based on 85,000 stock trades executed at a half-dozen popular brokerages over six months.
The study’s authors found that at Schwab’s TD Ameritrade, they got midpoint prices or better on 69% of their trades, while at Robinhood the comparable rate was 31%, according to data from Christopher Schwarz, a finance professor at the University of California, Irvine, and the lead author of the study.
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