There really is no reason to buy and thankfully no reason to sell at this point, although if this silence from PTK lasts much longer that may change.. I had 35 K dollars sitting in the bank doing nothing , normally I would give it to my investment guy and he would invest it in low risk dividend paying investments .. I thought I might buy 70 K or so PTK "if" these milestones would have come through but instead I bought a index fund that pays a monthly dividend of .0655 cents per month .. If PTK ever gives me a reason to buy more I could dump the index fund and buy more PTK but so far there is absolutely no reason to buy,, so if a shareholder like me feels like that ,why would any one else want to buy PTK??