If the two mega-takeovers were consummated, Gillette's "G" ticker symbol and AT&T's "T" will be free for the first time in decades for other companies interested in the single-letter market moniker.

The treble clef, the top symbol you see in the photo above ... The treble clef is a standardized representation of the letter G, while the bass clef, also known as the F-clef, is a more dramatic ...

They're also referred to as ticker symbols. They can include up to five characters. Stocks listed on the New York Stock Exchange (NYSE) can have four or fewer letters. Nasdaq-listed securities can ...