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Re:With 61 Seconds in a Minute, Markets Brace for Trouble by kasey_junk on Monday June 29, 2015 @09:48AM (#9798011)
> High enough that the firms are at least receiving a normal profit.

As did the system of pit traders that it replaced. The margins and accompanied spreads are lower now than previously.

> no doubt that the extraction of this normal profit has non-neglible deleterious effects on the economy

As with any market activity, it needs to be compared with the benefits it provides.

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