Down 28% in a year, should you buy CSL shares now?

CSL Ltd (ASX: CSL) shares are edging lower today.

Shares in the S&P/ASX 200 Index (ASX: XJO) biotech stock closed on Friday trading for $218.50. In early afternoon trade on Monday, shares are changing hands for $218.14 apiece, down 0.2%.

For some context, the ASX 200…