YFI has been one of the greatest story nowaday in the crypto space. Basically a asset management company with alot of flexibility (e.g. insurance, additional investment strategies) as well. Due to the very limited supplies and the high APY, the price has been kept going higher and higher and higher and even past the price of BTC and trading at 15000+ now. Who knowes how much it may go up as it is still discovering, But for a short swing, maybe be very smart to buy now but to wait for consolidation and break out.
Stay safe and healthy~