Sempra (SRE) wrapped up Friday's trading session with a slight decline, but the energy infrastructure company delivered some positive news on the earnings front. The company tightened its full-year 2025 adjusted earnings guidance to $4.70 per share, up from the previous range of $4.30 to $4.70, and comfortably ahead of the $4.54 analyst consensus.

While earnings guidance matters, income-focused investors often care more about what a stock pays in dividends. Sempra currently offers an annual dividend yield of 2.97%, distributing 64.5 cents per share each quarter, or $2.58 annually. So let's do the math on what it would actually take to generate real monthly income from these payments.

The $500 Monthly Income Calculation

To pocket $500 every month from Sempra dividends—that's $6,000 annually—you'd need to own approximately 2,326 shares, representing an investment of roughly $202,222. If that sounds steep, a more modest goal of $100 monthly ($1,200 yearly) would require about 466 shares, or approximately $40,514.

The math is straightforward: Take your desired annual income and divide it by the annual dividend payment. So $6,000 divided by $2.58 equals 2,326 shares for the $500 monthly target. Similarly, $1,200 divided by $2.58 gets you 465 shares for $100 monthly.

Understanding How Dividend Yields Move

Here's the thing about dividend yields—they're not static. The yield changes constantly because it's calculated by dividing the annual dividend by the current stock price, and both of those numbers can move.

Let's say a stock pays $2 annually in dividends and trades at $50. That's a 4% yield ($2 divided by $50). But if the stock price climbs to $60, that same $2 dividend now yields only 3.33%. If the price drops to $40, the yield jumps to 5%. Same dividend payment, different yields.

The dividend payment itself can change too. When companies increase their dividends, the yield rises assuming the stock price holds steady. Cut the dividend, and the yield falls accordingly. It's a moving target that requires attention from income investors.

Price Action: Sempra shares declined 0.4% on Friday, closing at $86.94.