Bloomberg Shares of AstraZeneca Plc, the UK’s biggest drugmaker, started trading on the New York Stock Exchange on Monday following a listing upgrade to replace its American Depositary Receipts that were on Nasdaq. The drug and vaccine maker is seeking to attract more investors by tilting further toward the US, where it makes almost half of its revenue. It has said the move will give equal weight to its UK, Swedish and US listings. AstraZeneca shares opened at $187.50 apiece in New York, rising in early ...