Since May 5, the broad market has swooned lower twice - including a massive intraday 1000 point decline on the Dow Industrials - and climbed dramatically once. Overall, the Dow, as measured by the SPDR Dow Jones Industrial Average ETF (NYSE:DIA), is still off a few percentage points from last week's drop. But that hasn't stopped several big names from tacking on big gains since that time. Below, we list the three best performing large-cap U.S. names since May 5th's notorious plunge.

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Tying Up Gains
Two of the best three performers on the S&P 500 this last week are from the materials sector. Titanium Metals Corporation (NYSE:TIE) leads the pack with a 16% gain since the "May 5th Massacre," and nearly 50% in the last three months. The company pays no dividend and trades with a one-year, trailing P/E of 96.1.

With facilities in Europe and North America, TIE is in the business of producing titanium metal products for a variety of industries. A quarter of the company's shares are held by institutional investors, who were likely pleased with the firm's quarterly sales numbers, up from $203 million in Q1 2009 to $217 million in the same quarter this year.

A Mountain of a Rise
Alleghany Technologies, Inc. (NYSE:ATI) is the second big gainer from the metals group. The company is a specialty metals producer whose business is also strongly reliant upon titanium and titanium alloy demand. Since May 5, ATI stock is up approximately 7.5%, and for the last six months it has gained more than 65%. That compares favourably with the broad materials sector, which is up less than two percent in the previous six months, as measured by the Materials SPDR ETF (NYSE:XLB).

Payroll Profits
The second biggest gainer on the S&P this last week was Fidelity National Information Services (NYSE:FIS), a company that offers back office and online tech service and support to the financial services industry. FIS has 14,000 clients in over 100 countries globally.

The company's shares offer shareholders a 0.68% annual dividend yield and trade with a P/E of 67.83. More than 80% of Fidelity's shares are institutionally owned.

The Wrap
The market has a way of frightening even the staunchest stockholders out of their most dearly held positions. But under cover of such steep falls, there are still issues that continue to climb tenaciously. (For further related reading, check out Dow's Biggest Losers When It Tanked.)

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