Every financial security (e.g. stock, index, warrant, economic indicator, etc) is identified by a unique Bloomberg ticker, followed by the "Yellow" market sector key.
For instance: DJI <INDEX><GO>, where:
DJI = Bloomberg ticker for Dow Jones Industrial Average Index
<INDEX> = Yellow Market Key (F10=Index)
<GO> = The Enter key
Watch this short video: How do I use Bloomberg Ticker Symbols?
There are two ways to find Bloomberg tickers:
Simply enter the company name (e.g. HSBC) or keyword (e.g. US Treasury) will give you the most relevant results, then look for your results by categories such as Functions or Securities.
You can also find Bloomberg Tickers by Mnemonics, i.e. <Market Sector Yellow Key> + TK.
For example, to find all corporate bonds issued by Hutchison Whampoa,
