Apple and Google are now valued higher than the GDP of all but America's two largest cities, according to a new BofA Merrill Lynch Global Research report.

What it means: There is a growing concentration of wealth among a small number of tech companies that are mostly based in the same geographic regions (Silicon Valley and the Pacific Northwest). And that could ultimately lead to social unrest, particularly when juxtaposed against Trump-era economic nationalist. From the BAML report, which is titled Occupy Silicon Valley:

What it doesn't mean: Amazon is not, for example, actually more valuable than its home base of Seattle, as metropolitan GDP doesn't account for broader economic or security values (let alone real estate, infrastructure, etc.).