Having an enormous stake in a company can be a blessing or a curse—especially if the stock is volatile during the year. With that baseline, 2014 proved kinder to some notable corporate titans than others.
CNBC calculated 2014's biggest winners and losers of 2014 based on the stock's 12-month performance and the individual's stock ownership. Some of the richest got even richer, while others suffered some punishing results they'd probably rather forget.
What follows are some of the biggest 2014 movers among the holdings of notable company founders and executives.
A nearly 30 percent climb for Buffett's Berkshire Hathaway Class A in 2014 cemented his status as one of the world's wealthiest men. With his gain from the stock, Buffett became the world's second-richest person in December, CNBC reported.
As Buffett controls more than 38 percent of outstanding shares, his haul from the stock's jump topped $15 billion. Berkshire Hathaway A closed 2014 at $226,000 a share.
The uncertainty facing Oracle in the crowded enterprise computing sphere hasn't hurt its stock. Oracle shares rose more than 17 percent in 2014, ending at nearly $45 per share.
Founder Larry Ellison, who owns more than 25 percent of outstanding shares, gained about $7.5 billion from Oracle's rise.
The value of Ballmer's return from his Microsoft holdings trumped his $2 billion purchase of the NBA's Los Angeles Clippers. Microsoft shares rose nearly 25 percent, ending 2014 above $46 a share.
The company's former CEO retains 4 percent of its outstanding shares. The climb lined Ballmer's pockets with more than $3 billion.
Tesla's stock endured a rough patch through the end of 2014 as oil prices plummeted, stoking fears that alternative energy might suffer from the sudden bounty of cheap fossil fuels. However, the electric car company still surged nearly 50 percent in 2014, though, ending December above $222 a share.
Founder and CEO Musk's gain topped $2 billion on the move.
The former Carnival CEO still holds nearly a quarter of the company's outstanding shares. Arison's gains topped $700 million as the stock rose more than 12 percent in 2014.
Twitter faced slowing user growth in 2014, which partly contributed to its stock plummeting more than 43 percent to end the year at roughly $36 a share. Co-founder Dorsey owns 3.5 percent of the company's outstanding shares, which translated to a loss of more than $600 million.
Twitter's other co-founder Williams, who owns 8.5 percent of the social media giant's outstanding shares, lost more than $1.5 billion on the company's slide.
The slump in oil prices in 2014 sent the stock of Continental Resources reeling. Shares fell more than 30 percent on the year, closing just above $38 a share.
Continental CEO Hamm holds 68 percent of the company's outstanding shares—translating to a loss of nearly $5 billion. Yikes!
Amazon founder Bezos took a huge hit in what turned out to be a dismal year for the company's stock. His losses topped $7 billion as shares swooned by more than 20 percent.
Amazon stock closed 2014 just above $310 a share.