Billionaire rank: 1,999
Firm name: Pershing Square
Biggest buy: United Technologies (UTX)
Biggest sell: Starbucks (SBUX)
Top-3 holdings:
Restaurant Brands International (QSR), Chipotle (CMG), Lowes (LOW)
Source: WalletHub
Billionaire rank: 3
Firm name: Greenlight Capital
Biggest buy: CNX Resources (CNX)
Biggest sell: General Motors (GM)
General Motors (GM), Green Brick Partners (GRBK), AerCap Holdings (AER)
Billionaire rank: 1,399
Firm name: Tiger Management
Biggest buy: Facebook (FB)
Biggest sell: NXP Semiconductors (NXPI)
Microsoft (MSFT), Apollo Global Management (APO), Facebook (FB)
Billionaire rank: 1,394
Biggest buy: Trian Partners
Biggest buy: NVT (nVent Electric)
Biggest sell: SYSCO Corporation (SYY)
Proctor & Gamble (PG), SYSCO Corporation (SYY), Mondelez International (MDLZ)
Billionaire rank: 729
Firm name: Third Point Capital
Biggest sell: Merck & Co. (MRK)
Baxter International (BAX), United Technologies (UTX), Campbell Soup (CPB)
Billionaire rank: 261
Firm name: Paulson & Co.
Biggest buy: Celgene (CELG)
Bausch Health Companies (BHC), Celgene (CELG), Discovery Inc (DISCK)
Billionaire rank: 190
Firm name: Soros Fund Management
Biggest buy: Ceridian (CDAY)
Biggest sell: Caesars Entertainment (CZR)
Liberty Broadband (LBRDK), VICI Properties (VICI), Caesars Entertainment (CZR)
Billionaire rank: 138
Firm name: Appaloosa Management
Biggest buy: PG&E Corp. (PCG)
Biggest sell: Allstate (ALL)
Micron Technology (MU), PG&E Corp. (PCG), Allergan (ALL)
Billionaire rank: 73
Biggest buy: Caesars Entertainment (CZR)
Biggest sell: Dell Computers (DELL)
CVR Energy (CVR), Herbalife Nutrition (HLF), Cheniere Energy (LNG)
Billionaire rank: 67
Firm name: Bridgewater
Biggest buy: Biogen (BIIB)
Biggest sell: Celgene (CELG)
Biogen (BIIB), Bristol-Myers Squibb (BMY), United Rentals (URI)
Billionaire rank: 52
Firm name: Renaissance
Biggest buy: Starbucks (SBUX)
Biggest sell: Apple (AAPL)
Verisign (VRSN), Palo Alto Networks (PANW), Chipotle (CMG)
Firm name: Berkshire Hathaway
Biggest buy: JPMorgan (JPM)
Biggest sell: Wells Fargo (WFC)
Top-3 holdings: Apple (AAPL), Bank of America (BAC), Coca-Cola (KO)