Either that or implement it at the exchange level. Eg. if accredited investors sell a stock in <3 months, you pay X% as a tax at the moment of sale - or maybe d

Either that or implement it at the exchange level. Eg. if accredited investors sell a stock in <3 months, you pay X% as a tax at the moment of sale - or maybe different fees for <1 hour, <1 month, <1 year