Emerging markets stocks, representing companies in developing economies like China and India, offer significant growth potential but come with heightened political and regulatory risks. Key players include Alibaba, Tencent, and Samsung, each facing unique challenges such as competition and regulatory scrutiny. Investors can diversify their portfolios through emerging market-focused ETFs, like the iShares MSCI Emerging Markets ETF, which includes major holdings like Taiwan Semiconductor Manufacturing and Reliance Industries.