Then keep buying.
When would you change your tune? When it's at 60 cents? 50 cents? 30?
I mean, you can talk about the core business fundamentals not changing, but the stock price is part of those fundamentals. If that changes, then frankly you have to weigh that as a factor.
Saying otherwise is poor investing, imo.
My decision will be based on their next 3 months regardless of price.
Leth