On 1/3/17 I bought 1000 shares at $3.21, it went up 10% to $3.55, and on 1/5/17 I bought another 1,000 shares, bringing my safety cushion down to 5%, but with 2,000 shares. Today 1/17/17 I see MUX up 10.5%, making my net safety cushion or profit net 17% on the 2k shares.
Ladder up they call it. Now, with 17% “room”, I can double the 2000 shares to 4000 shares, and still have 8.5% for a cushion if for some unforeseen problem knocks it down. I do last in first out.