Mid American Energy is owned by Berkshire Hathaway, which trades under the symbols BRK.A on the NYSE.
ZFFA on NYSE
MNST
There is no ticker symbol for Bloom Energy. They are currently a privately held company.
direct energy is owned by centrica
HUML.PK is the symbol for Humble Energy.
The stock symbol for TD Ameritrade is AMTD and it trades on the NASDAQ. 'AMTD' - Ameritrade is now TD Ameritrade (after merging with TD Waterhouse), but kept the same stock symbol.
The ticker symbol for Laboratory Corporation of America Holding is LH and it is traded on the New York Stock Exchange.
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The NYSE common stock ticker symbol for Suncor Energy Inc., is SU.
Tenaska Energy is a privately-held company and as such has no publicly-traded stock.
The stock ticker symbol for NV represents NV Energy Inc. NV Energy is a utility company that provides services for both energy and natural gas.
It's a private company. No stock symbol yet until the company goes to public.