Even 0.1% would probably be enough to tamp down most HFT.

Unfortunately, this exchange doesn't seem to be aimed at that:

> The LTSE is a bid to build a stock exchange... that appeals to hot startups, particularly those that are money-losing...

> ... giving retail investors a chance to cash in on high-growth startups.

That sounds like a private lottery at best, and a scam at worst. Maybe it wouldn't seem so bad if I read through the full SEC document, but I'll steer clear of this until plenty of other people have tried it out.