The 2012 Sports Illustrated issue was revealed Monday, featuring 19-year-old American model and actress, Kate Upton, on this year's magazine cover.
Could the cover of the most profitable single-issue magazine franchise in the world be a barometer for the stock market? CNBC.com looked at the market performance in years when the magazine cover featured a blonde versus a brunette.
The models' hair color was gauged from the Sports Illustrated website, dating back to 1964.
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