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Absolutely nothing. Baltic Dry only covers bulk carriers. Hanjin's fleet of bulk carriers consists of only 22 vessels.

Could look at HARPEX http://www.harperpetersen.com/harpex/harpexRH.do?timePeriod=... which tracks container freight. It does not have as much historical data though

Is there some new internet trend to obsess over the Baltic Dry Index?

Yes, it's what happens when too many people read zerohedge because they think it makes them smart.

It looks like an effortless climb back up to 1000-1500.