How do I choose the right brokerage firm?

For most long-term investors, the major full-service brokers — Fidelity, Vanguard, and Schwab — are all excellent and hard to go wrong with. Focus on a few things that matter: $0 stock and ETF commissions (now standard), no account minimums or maintenance fees, a broad menu of low-cost index funds, fractional shares if you invest small amounts, and SIPC membership for protection. Beyond that, consider the cash sweep rate (how much idle cash earns), the quality of the mobile app and research tools, and whether you'll want a one-stop relationship that also offers banking or an HSA. Avoid choosing based on flashy promotions or features you'll never use, like complex options trading. Pick one solid broker and consolidate — fewer accounts means less to track and rebalance.