if you are an invester in a wholesale/supplier/manufacturing company, you need to follow the retail market that applies to your product. Lots and lots of easy examples out there. CAT and HD both follow IYR since they are both related to the housing sector. DELL often follows BBY since Best Buy sells their products. A lot of electronic products stocks took a hit after Compaq went down. Since CTDH is a manufacturer of cyclodextrin, it's important that they are contracted with the company that will be distrubuting the medication. Take note, CTDH does not hold a monopoly on cyclodextrin. There are many distrubuters of it.
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