addendum: The above is based on a current market evaluation of AM at 10% of mining revenue, giving AM a valuation of 800,000 btc. That makes the current AM shares rather cheap... I recommend loading up on them up to a point which you're comfortable with... (based on the ratio above)
Jutarul, last time I was listening your recommendation : "for new investors it's great entry point to pay 2.50btc/share" ... i lost about 90% of my BTCs (100+) valuation ... so yeah

Please provide a reference and a context. I never give out advise like that because investment decisions are highly subjective.
Also please distinguish between share market based valuation and other means to arrive at a company value. The share market right now values AM at 120,000 BTC. I assume that this discounts for operational expenses, development risks and uncertainty on how much market share AM can claim. The logic for the mixed portfolio I provided above can be applied to different valuation schemes. Obviously you need to tweak the numbers in way you're comfortable with. The point I was trying to make is that with increasing purchasing power of the bitcoin the company valuation has to shrink in terms of bitcoin for the reason I outlined.
What did you do with your shares? Did you sell them at a lower price or are you currently in a hold position?