This is just something i was wondering about, but here goes anyway. If a trader was dealing with single stocks( not futures ), are there any stocks that mirror the index they are in, maybe not exactly but to a degree where if there was a significant change in the futures price then it would probably direct the actual stock in the same general direction. I know that there are a lot of other factors involved in single stock trading but i would be interested to see if this was a viable part of any strategy. This may be 'old hat', but i'm asking the question as a matter of interest and not for arguments sake. PeeDee.