| Alexion Pharmaceuticals is a biopharmaceutical company serving patients and families affected by rare diseases through the discovery, development and commercialization of therapies. Co. has developed and commercialized two complement inhibitors to treat patients with paroxysmal nocturnal hemoglobinuria and atypical hemolytic uremic syndrome, as well as the complement inhibitor to treat anti-acetylcholine receptor antibody-positive generalized myasthenia gravis and neuromyelitis optica spectrum disorder in patients who are anti-aquaporin-4 antibody positive. In addition, Co. has two enzyme replacement therapies for metabolic disorders, hypophosphatasia and lysosomal acid lipase deficiency. The ALXN YTD return is shown above.
The YTD Return on the ALXN YTD return page and across the coverage universe of our site,
is a measure of the total return for a given investment year-to-date for the current calendar year
(up to the end of prior trading session). Arguably, choosing the current calendar year for a measurement
period is on the one hand completely arbitrary, but on the other hand a year-to-date look can be extremely
useful in the context of our country's tax system which taxes gains and income on a calendar year basis.
Thus, researching Year-To-Date Returns is good practice for investors — whether ALXN YTD return or other benchmarks/peers
— and when doing so it is also important to factor in dividends, because a financial instrument's YTD return is
more than just the change in price if that instrument pays a dividend or coupon. Our website aims to empower investors
by performing the ALXN YTD return calculation (with any dividends reinvested as applicable), and to provide a
coverage universe of many stocks and ETFs to be able to compare YTD returns.