Dane Cash from Cycling Tips wrote an article earlier today setting out his view of the winners and losers from the GC shake up in stage 4 of the Giro d'Italia. Here's a chart that summarises his view, compared to the remainder of the peloton. Each of Dane's winners are shown in pink, while his loser nominations are shown in red. This chart contains the enitre peloton so you have a sense of their relative movement in comparison to the whole.
Mouse over each of the lines for more detail.