NYSE:
$trin - General market sentiment
A Trin reading below 1.0 is ""healthy"" i.e. the bias is up.
A Trin reading above 1.0 is ""sickly"" and the bias is down.
In general a range between 0.75 and 1.25 is flat or neutral.
$tick - TICK is a very simple indicator measuring the number of NYSE stocks currently trading on an uptick vs those trading on a downtick. It provides a very nice snapshop view of who is in control in the battle between the Bulls and the Bears.
Nice, short but pretty thorough.
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NASDAQ:
$TICT TICK Indicator <----
does not work on TS
You can find all of them for all indicies here:
Index Symbols