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A comment on Index Investing Makes Markets and Economies More Efficient (2016). Parent comment

Re:Index Investing Makes Markets and Economies More Efficien... by jopsen on Tuesday September 19, 2017 @12:35PM (#15286157)
Robinhood let's you trade for free, and quantopian.com provides a python based platform for automated trading with support for robinhood.

Have fun,

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Re:Index Investing Makes Markets and Economies More Efficien... by digikata on Tuesday September 19, 2017 @02:15PM (#15287284)
How are they sustaining that free trading? If it's on VC money, then I worry what exactly happens to shares if the firm shuts down. Who is actually holding the shares becomes a critical question in that circumstance.

Edit: I see a $110M Series C in April '17 reported for Robinhood.

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Re:Index Investing Makes Markets and Economies More Efficien... by mi100hael on Tuesday September 19, 2017 @02:38PM (#15287543)
You can pay like $10 a month for their "Gold" offering. Gets you margin (which also nets them some money) & after-hours trading.
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Re:Index Investing Makes Markets and Economies More Efficien... by paulpauper on Tuesday September 19, 2017 @02:53PM (#15287692)
Except for margin trading, robinhood is a great deal. Many of these regular discount brokers are committing high way robbery in terms of the fees. TC Ameritrade is the worst in this regard. I hope robbinhood puts them out of business or at least takes away a large chunk of their market share.
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Re:Index Investing Makes Markets and Economies More Efficien... by olau on Tuesday September 19, 2017 @12:40PM (#15286217)
It does sound fun, but apparently I'm still in the wrong country for Robinhood. And to be honest, in this case I would trade some fun for something with a GUI. :)
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Re:Index Investing Makes Markets and Economies More Efficien... by kbutler on Tuesday September 19, 2017 @03:57PM (#15288239)
Robinhood's primary interface is a mobile app with a GUI.

Not great for research, but functional to buy/sell.

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