2012 ended with the Dow Jones Industrial Average (DJINDICES: ^DJI) up 7.26%. The Index's biggest winner during the year was Bank of America (NYSE:BAC), which was up by more than 100% in the year while the worst performer was Hewlett-Packard (NYSE:HPQ), which lost more than 44% of its value in the year. But now after just three weeks have gone by in 2013, the Dow is up more than 4% so far while the best and worst performers of the prior year have flipped roles.

The Dow's best-to-worst performer so far in 2013 is Bank of America. Shares of the bank are down more than 4% so far in 2013, while the next worst Dow component of the year is Verizon, whose shares are down 1.7% thus far. The bank announced earnings last week and while they weren't terrible, they didn't blow investors' expectations out of the water, either. The biggest downer for the bank were the charges it took during the last quarter because of its involvement in the financial crisis and mortgage practices. The bank posted earnings of $732 million while its two closets rivals, JPMorgan Chase and Wells Fargo, earned $5.7 billion and $5.1 billion, respectively. 

My Fool colleague John Maxfield believes the bank has what it takes and can now make a full recovery because these legal issues will no longer be looming in the back of investors' minds. To read his recap on the bank's most recent earnings report, click here.

The worst-to-best performer is obviously Hewlett-Packard. Shares have risen slightly more than 20% in 2013. The next best Dow performer this year is Caterpillar, whose shares have risen nearly 9%. But as impressive as Caterpillar has performed, that's still less than half Hewlett-Packard's 2013 gains.

This past week alone, shares of the personal computer and printer manufacturer rose 5.9% and led all Dow components. The move higher came after reports indicated that Hewlett-Packard would have buyers for the company's Autonomy and EDS units if it were interested in divesting these assets. An HP representative denied the rumors that the company was looking to sell off these divisions, but many investors still believe breaking up HP would be the best thing for shareholders. Fool analyst Travis Hoium recently noted that while shares have risen more than 50% from their 52-week lows, he still feels the company is not worth the risk at this time. 

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This article represents the opinion of the writer, who may disagree with the “official” recommendation position of a Motley Fool premium advisory service. We’re motley! Questioning an investing thesis -- even one of our own -- helps us all think critically about investing and make decisions that help us become smarter, happier, and richer.