Investors interested in Medical stocks should always be looking to find the best-performing companies in the group. Has Adverum Biotechnologies (ADVM) been one of those stocks this year? By taking a look at the stock's year-to-date performance in comparison to its Medical peers, we might be able to answer that question.Adverum Biotechnologies is one of 1051 individual stocks in the Medical sector. Collectively, these companies sit at #4 in the Zacks Sector Rank. The Zacks Sector Rank includes 16 different g ...