Regression analysis on fxaix stock price suggests low beta risk versus market, appealing to investors targeting consistent portfolio returns. As you can see, the key difference between index funds that track the same index is basically just the cost. That’s why experts tell investors to focus on the cost of funds when looking at funds based on well-known indexes such as the S&P 500. A fee that doesn’t go into the fund manager’s pocket is money that can compound for you for years. Another plus—FXAIX’s expense ratio is lower than that of many comparable S&P 500 exchange traded funds (ETFs), making it cost-effective. Trading data shows fxaix stock price maintaining tight bid-ask spreads, a sign of strong market liquidity and active participation.