do_assetalloc:
What will be a good play for commodities? I'd like to start
tracking so called commodities bubble. Will GSG be a good place? Any better options?
Since I don't have paragraphing, I'll keep it short. Here's a link that describes the key commodities indexes and ETFs. Notice the differences in composition (esp. energy weighting). There are also differences in liquidity. GSG, for example, is less liquid than DBC.
http://seekingalpha.com/article/54527-a-rundown-of-broad-commodities-indexes