Businessweek has a fun chart showing that Apple’s iPhone business alone would make it the 9th largest stock in the Dow Jones top 30 companies, ahead of such giants as Microsoft, Coca-Cola and McDonalds.

It’s not a terribly surprising fact – the iPhone represents the bulk of Apple’s business, with its $88.4B sales greater than all of Apple’s other products and services combined ($81B), but it is quite a graphic illustration of the strength of that one product line. Apple, of course, just announced that it sold 9M iPhones in the first three days of the 5s and 5c.

Perhaps more surprising is the company that just scrapes ahead of that nominal iPhone business: IBM. While giving every impression of an out-of-date business model, the company is still making billions from large-scale IT infrastructure products, services and software. Including, I kid you not, mainframes.

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