Investors interested in Finance stocks should always be looking to find the best-performing companies in the group. Has Aviva (AVVIY) been one of those stocks this year? Let's take a closer look at the stock's year-to-date performance to find out.Aviva is a member of our Finance group, which includes 859 different companies and currently sits at #5 in the Zacks Sector Rank. The Zacks Sector Rank considers 16 different sector groups. The average Zacks Rank of the individual stocks within the groups is measur ...