In this series, we take a look at the 25 stocks on the S&P 500 Index (SPX) that have turned in the worst performance during the past decade -- what went wrong, and what happens next.

The suspense is over -- National City Corporation (NYSE: NCC) is the fourth and final Ohio-based regional bank to appear on our list of laggards. Based out of Cleveland, National City appeared to be faring well in the late 1990s. The bank had just completed some key acquisitions, and the stock was locked in a long-term uptrend. However, the next decade would prove considerably more challenging.

What went wrong? At number 6 on our list of SPX underdogs, NCC gave up 87% of its value from June 30, 1998 through June 30, 2008. The stock peaked at $40 in November 2005, and then edged sideways ... until it ran headlong into the subprime tsunami.

The first warning from NCC came in March 2007, when the bank said it would retain $1.6 billion previously set aside for non-conforming loans. In a filing with the Securities and Exchange Commission, NCC said it had recorded $11 million in write-downs through the first two months of the year, and suggested that a further write-down was "likely" before the loans were transferred.

In this series, we take a look at the 25 stocks on the S&P 500 Index (SPX) that have turned in the worst performance during the past decade -- what went wrong, and what happens next.

Is it just me, or were Ohio-based regional banks a particular target of the market's wrath during our focus decade? KeyCorp (NYSE: KEY) of Cleveland and Fifth Third Bancorp (NASDAQ: FITB) of Cincinnati have already made cameos on our list of losers -- and I'm not going to give it away, but there's at least one more Buckeye State banker further down the line-up. And, of course, how could we forget Columbus-based Huntington Bancshares (NASDAQ: HBAN)?

What went wrong? At number 14 on our list of SPX laggards, HBAN shed 77% of its value from June 30, 1998 through June 30, 2008. At the end of June 1998, the shares were perched just narrowly atop $25 -- a region that would later switch roles to provide impenetrable resistance from July 2004 through the end of 2006. Now, in the wake of a precipitous price plunge, HBAN is wallowing some 72% below this formerly critical level.

Unlike some other regional banks, HBAN started to feel the pain of subprime-gone-wrong as soon as July 2007. At the time, the bank warned that its second-quarter earnings would fall 11 cents short of analysts' expectations. CEO Thomas Hoaglin admitted, "These results were below our expectations and resulted primarily from difficult and deteriorating residential real estate markets." This admission paved the way for an all-out plunge; from its July 2007 peak to its July 2008 low, the stock shed 81%.

In this series, we take a look at the 25 stocks on the S&P 500 Index (SPX) that have turned in the worst performance during the past decade -- what went wrong, and what happens next.

First Horizon National Corporation (NYSE: FHN) operates as the holding company for First Tennessee Bank, making it one of many regional banks on our roster. If you're the intelligent, discerning audience that I assume you to be, I probably need only mention that FHN is in the mortgage-lending business for you to guess what might be ailing the stock.

What went wrong? At number 15 on our list of SPX laggards, FHN shed 76% of its value during the 10-year period ending June 30, 2008. The stock peaked at $48.65 in March 2004, but didn't start to plunge in earnest until July 2007. Say it with me, people: subprime.

While the share price didn't plummet immediately in response, FHN first revealed mortgage-related weakness in August 2006. The bank warned that quarterly earnings would be dented by deteriorating mortgage-market conditions, and profits fell during the next two quarters. FHN cited "lower gain on sale margins, further reductions in new mortgages and increased costs to hedge the servicing risks for mortgage loans" for the earnings weakness.

On September 4, 2007, FHN's head of employee services got chatty with The Memphis Daily News. John Daniel admitted that the bank was trimming its headcount gradually in a cost-cutting effort, but reassured the paper that the subprime crisis didn't have too deep an impact. "We don't see any significant reductions in staff as a result of what's happening in the mortgage industry right now," he asserted. Just a week later, on September 13, the Daily News reported that FHN was slashing 50% of its mortgage sales force, about 2,000 total positions.

In this series, we take a look at the 25 stocks on the S&P 500 Index (SPX) that have turned in the worst performance during the past decade -- what went wrong, and what happens next.

If you live or work in Cincinnati, it's impossible to avoid Fifth Third Bancorp (NASDAQ: FITB). Branches and ATMs pop up around nearly every street corner, and, if you're downtown at lunch time, you'll see hundreds of employees from FITB's downtown headquarters flooding the sidewalks. (They're easy enough to pick out, since they're required to wear gold 5/3 insignia pins.) And please, don't get me started on the madness that is Fifth Third Day, which naturally falls on 5/3. Despite its impressive banking dominance over this Midwestern city, FITB -- to paraphrase Chris Farley -- just can't seem to get its share price on the right track.

What went wrong? At number 16 on our list of SPX laggards, FITB shed 76% of its value during the 10-year period ending June 30, 2008. If you're mentally steeling yourself for another subprime sob story, Fifth Third won't deliver. The stock has crumpled steadily since its April 2002 peak at $69.70, defiantly blazing a path lower even as the rest of the broad market enjoyed a stellar bull run.

In the late '90s and through the turn of the century, FITB grew at a pace that cancer cells would envy. From CNB Bancshares to Vanguard Financial to State Savings, the regional bank swallowed up its peers and rivals with a voracious appetite to rival Jabba the Hut's. A fine growth strategy -- if your bean-counters are all on the same page. When FITB took a $54-million charge against earnings after improperly accounting for some mortgage-backed security investments, it drew the attention of the SEC. In the meantime, the Federal Reserve Bank of Cleveland and the Ohio Department of Commerce imposed a moratorium on any further acquisitions.