Artificial intelligence (AI), big tech, and cryptocurrencies all have their fans among investors, and with good reason. All can add to a well-balanced portfolio that will help make you richer over time. But you shouldn't forget about income investing -- buying stocks that reward you for holding them by paying a nice, sizable dividend on a regular basis.

Rather than trying to pick one or two (or 12) dividend stocks, many investors turn to exchange-traded funds (ETFs) to do the heavy lifting. Dividend ETFs are popular go-to options for investors who are seeking a passive income flow. One of the most popular is the iShares Core High Dividend ETF (HDV 0.18%), a fund that has more than $11 billion in assets and trades roughly 400,000 shares per day.

A roll of money and a blue note reading dividends.

Image source: Getty Images.

About the HDV ETF

HDV tracks the Morningstar Dividend Yield Focus Index, which screens for companies with strong balance sheets and a wide economic moat -- exactly what a passive income investor is looking for. It holds 76 stocks, with top holdings including ExxonMobil, Johnson & Johnson, AbbVie, Chevron, AT&T, and Coca-Cola.

Those are important names to know, because fully 50% of the fund is weighed in its top 10 holdings -- that means the fund can be a little overweight toward top names, but those companies are also some of the best dividend stocks you can buy. HDV offers a dividend yield of 3.7% and has a minuscule expense ratio of 0.08, or $8 annually for each $10,000 invested.

But HDV isn't your only option. There are several quality ETFs in the market that offer investors the opportunity to bring in regular income and provide instant diversification. Let's take a look at some of the alternatives:

Statistic HDV SCHD VYM SPYD
Price-to-earnings ratio 16.2 13.6 16.1 14.3
Price-to-sales ratio 2.3 1.4 1.7 1.3
Number of equity holdings 76 99 585 77
Dividend yield 3.7% 3.9% 2.9% 4.5%
Expense ratio 0.08 0.06 0.06 0.07

Data sources: Morningstar, author research.

Schwab U.S. Dividend Equity ETF (SCHD 0.07%): This fund focuses on stable dividend-paying stocks by tracking the Dow Jones U.S. Dividend 100 Index. With 99 equities in its portfolio, SCHD has a lot of blue chip names, including Chevron, ConocoPhillips, Merck, Texas Instruments, and Cisco Systems. SCHD pays a dividend yield of 3.9%, and its expense ratio is a bit lower than HDV at 0.06.

Vanguard High Dividend Yield Index Fund ETF Shares (VYM 0.59%): Vanguard index funds are always popular picks, and they typically do a great job. VYM tracks the FTSE High Dividend Yield Index and is the most diversified on this list, holding 585 stocks. Top names include Broadcom, JPMorgan Chase, ExxonMobil, Walmart, and Procter & Gamble. While the expense ratio is slightly lower than HDV at 0.06, VYM also provides a lower yield at 2.9%.

SPDR Portfolio S&P 500 High Dividend ETF (SPYD 0.18%): This ETF tracks the S&P 500 High Dividend Index, which is an equal-weighted index of the 80 highest-yielding stocks in the S&P 500. Top names here include Philip Morris International, Hasbro, AT&T, CVS Health, and Crown Castle. SPYD has the best yield of the ETFs that we're considering, coming in at 4.5%, and the expense ratio is 0.07.

Picking a winner

Honestly, there's no cut-and-dried answer here. SCHD has great blue chip names; VYM provides the best diversification; and SPYD has the advantage of an outstanding dividend yield.

VYM Year to Date Total Returns (Daily) Chart

VYM Year to Date Total Returns (Daily) data by YCharts

If I have to make a choice for a high-yield ETF, I'm going with the HDV ETF by a nose, for two simple reasons. First, it's outperformed the other ETFs on this list year to date, providing nearly a 5% gain. And second, the HDV provides the best dividend on a dollar-and-cents basis, paying out $0.91 during the past year. That's an important distinction when you think about holding on to a passive income ETF for a long time.

To reiterate, this is a strong group of dividend ETFs. The best choice usually rests with the individual investor. But for me, HDV is the call.