Investors interested in Medical stocks should always be looking to find the best-performing companies in the group. Has Addex Therapeutics Ltd. Sponsored ADR (ADXN) been one of those stocks this year? A quick glance at the company's year-to-date performance in comparison to the rest of the Medical sector should help us answer this question.Addex Therapeutics Ltd. Sponsored ADR is one of 1019 individual stocks in the Medical sector. Collectively, these companies sit at #4 in the Zacks Sector Rank. The Zacks ...