Algos put on notice by UK regulator

The FCA did not propose new rules but will "proactively" supervise and monitor algorithmic trading.

Some firms using computers to trade at ultra-fast speeds are not applying safeguards required to avert market meltdowns, Britain's Financial Conduct Authority said.

To be sure, it'd be premature to say the fallout from the low-vol trade's blowup is over.

Is volatility normalising?

The market frenzy that put an unprecedented jolt in volatility measures has claimed its first victims. That might be a positive.

Making money from lemons

More investors are learning how to make a profit from struggling stocks as online platforms make it easier to take short positions.