@unittempo, the correlation may be because of the similarities in the coin. I know XLM was forked from XRP, but I'm not sure if TRX was. I don't think ADA was cloned from any of them, but I could be wrong. Most of them are all at least closely associated (TRON Labs CEO is a former Ripple rep for China). Anyone who associates these might be in all 4 as a hedge, and thus creating the following trend we see here.
shiva8
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@StargazerRadio, we can use this chart to know the who will raise first of this 4 coins