The Top 25

A stunning 37 of this year's fast-growers come from the energy sector, and metals companies make a strong showing, too, thanks to high commodities prices. Meanwhile, other seemingly fleeting trends - like energy drinks - proved to have surprising staying power. We evaluate each company based on three years of revenue and profit growth as well as total return.

Intuitive Surgical <span class='quoteLink'>(<a href='/quote/quote.html?symb=ISRG'>ISRG</a>)</span>
4. Intuitive Surgical (ISRG)
Sunnyvale, CA

Earnings-per-share growth*: 123%
Revenue growth*: 62%
Total return*: 94%

Surgical-robot maker's products let doctors operate through tiny incisions.

See more Fastest-Growing data for Intuitive Surgical

*3-year annual rate
Source: Zacks Investment Research

NutriSystem

Hansen Natural

Arena Resources

Intuitive Surgical

Titanium Metals

Apple

RTI International Metals

Dynamic Materials

Southern Copper

Global Industries

Frontier Oil

Allegheny Technologies

Ceradyne

VASCO Data Security International

Perficient

Holly

SEACOR Holdings

Pioneer Drilling

Freeport-
McMoRan Copper & Gold

Kansas City Southern

Ladish

Grey Wolf

Allscripts Healthcare Solutions

XTO Energy

Grant Prideco
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NutriSystem's fat growth Americans' bulging waistlines have helped push this 35-year-old diet company to the top of Fortune's list this year. (more) video