While I like to play mostly with small & micro caps, I bought some SWC today. The stock bottomed a month ago along with the rest of the market, and had a positive response to an earnings report 3 days ago. I was planning on buying it last week, but it took off without me. With this week's market selloff, I had another chance - so I took it.
I think platinum is undervalued right now because it's cheaper than gold. And the stock has been beaten up badly, so it has room to run.