The BDI is not a great measure for the stock if you ask me. I used to think it was but DRYS goes inversely sometimes, with it sometimes.
The BDI is just the summation of some shippers pricing views on Capsize..DRYS has more Panamax than Capsize vessels-
DRYS
Click on Fleet Deployment..you will see that they have 5 Capsize and MANY more pana's..so the better gauge is the BPI, but most people dont understand that so they look at the weighted index versus the pana index.
What moves DRYS is its low float, beta and the fact that people dont like how George handles things business wise. In liklihood because of that fact the stock is probably 50% undervalued based on industry matricies.