I am trying to get data for TRIN and advancing/decliningissues through Yahoo finance. I have found the symbol for TRIN (^TRIN) but does anyone know the symbols for advancing/declining issues (If they are even available)?

Thanks

Try out this single-purpose data provider:

Market Sentiment static data provider - install Extension
Market Sentiment data provider - online guide in the Wiki

Perfect Eugene! Thanks a lot!!!

The Market Sentiment provider is depreciated. Effective 02/20/2020 you can get the most frequently used market sentiment data using our Wealth-Data provider - the advancing, declining and unchanged issues for AMEX, NASDAQ and NYSE! Here are the symbols:

$AMEX_ADVN (AMEX Advancing Issues)
$AMEX_DECLN (AMEX Declining Issues)
$AMEX_UNCHN (AMEX Unchanged Issues)
$NASDAQ_ADVN (NASDAQ Advancing Issues)
$NASDAQ_DECLN (NASDAQ Declining Issues)
$NASDAQ_UNCHN (NASDAQ Unchanged Issues)
$NYSE_ADVN (NYSE Advancing Issues)
$NYSE_DECLN (NYSE Declining Issues)
$NYSE_UNCHN (NYSE Unchanged Issues)

You can create a W-D DataSet by copying/pasting the symbols or by simply choosing them from "Market Sentiment" Classification Group in the New DataSet Wizard > Wealth-Data.

UPDATE:

Effective 03/09/2020, get more market sentiment data using our Wealth-Data provider - the new highs and lows for AMEX, NASDAQ and NYSE! The new symbols are:

$AMEX_newhi (AMEX New Highs)
$AMEX_newlo (AMEX New Lows)
$NYSE_newhi (NYSE New Highs)
$NYSE_newlo (NYSE New Lows)
$NASDAQ_newhi (NASDAQ New Highs)
$NASDAQ_newlo (NASDAQ New Lows)