While a weakening economy and a subsequent dip in the stock market are unfortunate, they are inevitabilities. Even booming segments like the biotech sector are not immune to the general trend of recessions that Western economies experienced over the last 40 years or so. These downturns, however, provide opportunities for investors to buy stocks at lower prices. The case is the same for which biotech stocks to buy in a down market. Knowing when to buy a stock during market turmoil can be the difference betwe ...