It's really pretty simply. TD re-rated all their silver stories, across the board from what I understand, to a much lower in the ground silver cost and this affected all silver company valuations that were based on resource in the ground, even ECU.
I suggest Ghandi that you call the company and ask some questions for a change, they won't bite. The fundamentals for ECU have only gotten better recently while the market for precious metals companies has gotten worse at least by COMEX standards and stock prices. Of course in my view the market is dead wrong on precious metals and companies who hold or are developing very large resources like ECU or companies who produce large amount of ounces per year.
BTW, let us know what the company has to say after you call??