After the AGS window closes (27 days) the only way to get a stake in Bitshares will be via PTS.
The AGS donation rate will probably increase substantially in the last 10-15 days, driving up demand for PTS too.
DPOS & BitsharesX are currently in medium to advanced testing, I think once products are released (even though Bitshares X has already been snap-shotted) that the valuation of BitShares will increase siginificantly too.
Except for PTS/CNY the PTS demand is unbelievably low at the moment yet the price has achieved relative stability so any increased demand from will drastically effect price imo.
Downside: The PTS price has been pretty stable, the likelihood of the PTS price being below $4 and definitely $3.5 in the next 45 days in very low.
So limited downside and great upside potential.
I already have PTS & AGS which I've invested for the long term. However I think this is a good trade for some short term gains.