There's a "simple" two-step process to increase one's wealth by investing in the stock market. The first is to buy shares of quality companies. The second is to wait patiently while your money grows. Of course, this process isn't quite as easy as all that. Being patient is tough amid market volatility, and quality companies can be hard to find among hundreds of choices in the stock market.

If you need inspiration, let's consider two biotech stocks with excellent prospects that could deliver solid returns: Sanofi (NASDAQ: SNY) and (NASDAQ: MRNA).

Sanofi is a French biotech company that is perhaps best known for being one of the leaders in the insulin market. However, the drugmaker's portfolio extends far beyond this area, and its most important growth drivers arguably lie outside its insulin expertise. Financial results haven't been great for Sanofi over the past few quarters, as its revenue growth has stalled -- at best.

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Source Fool.com