Volume Weighted Moving Average of HLC3's, spread over a wide range of periods to get an overall feel of any market.
The 15 periods used are exponentially increasing to provide somewhat even spacings in moving markets, which can be useful for progressive stop-buys (dollar cost averaging in) or progressive stop-losses (dollar cost averaging out):
4
7
12
20
33
54
87
140
226
365
590
955
1545
2500
5000