With the addition of Qwest, the only single-letter symbols remaining are I, M and V.
12.
Symbols are sometimes reused, in the US the single-letter symbols are particularly sought after as vanity symbols.
13.
Temporary symbols assigned to newly or not-yet synthesized elements use 3-letter symbols based on their atomic numbers.
14.
After the letter symbol it can contain either letter or numbers up to a total of eight characters.
15.
It was a prominent corporation and industry leader using the single-letter symbol "'B "'on the New York Stock Exchange.
16.
The letter symbols are common in countries using IEC standards, but North American practices rarely refer to the IEC symbols.
17.
In unified international braille, the braille pattern dots-2 is used to represent a comma or other non-letter symbol or semi-letter.
18.
This block of characters should be used only for setting mathematical text, as mathematical texts use black-letter symbols contrastively to other letter styles.
19.
How to specify the symbols used on each, since a three-letter symbol in one exchange might stand for a different company in another?
20.
CA, Inc ., which trades under the symbol CA, moved from the NYSE to the Nasdaq in April 2008 and kept its two-letter symbol.