It just doesn't make sense to me that one can't compare one's alt portfolio with some kind of benchmarks, and if the 2-3 indexes out there have BTC (they do), that comprises the vast majority of index movement. If I can't find an an index, I'll use my own for market direction and portfolio management.
For what it's worth, I have six different index concepts I've been toying with and they are all down 20-30% since last Monday morning. Selection is based on combined cap and volume figures. I've been re-balancing every two weeks, but considering changing that to every week. The one with the least number of coins has 31 coins that are not BTC, and, in that one, no LTC, either. Probably saved that one from oblivion!
Is it consistent with the ~30000 BTC being drained from then for Ethereum, StorJ, Stellar and Syscoin?
Well stellar also went down.. so the downtrend of other alts is not because of stellar.. maybe is because of the price of bitcoin that is going down..
Bitcoin only went down less than 5%. While litecoin went down 20% +. Something else is at played here.