Editor's Note: Any reference to TheStreet Ratings and its underlying recommendation does not reflect the opinion of TheStreet, Inc. or any of its contributors including Jim Cramer.

Tomorrow, Tuesday, August 04, 2015, 18 U.S. common stocks are scheduled to go ex-dividend. The dividend yields on these stocks range from 0.6% to 14.4%. All of these stocks can be found on our stocks going ex-dividend section of our dividend calendar.

Highlighted Stocks Going Ex-Dividend Tomorrow:

Eagle Rock Energy Partners

Owners of Eagle Rock Energy Partners (NASDAQ: EROC) shares, as of market close today, will be eligible for a dividend of 7 cents per share. At a price of $1.86 as of 9:36 a.m. ET, the dividend yield is 13.8%.

The average volume for Eagle Rock Energy Partners has been 496,400 shares per day over the past 30 days. Eagle Rock Energy Partners has a market cap of $310.6 million and is part of the energy industry. Shares are down 13.2% year-to-date as of the close of trading on Friday.

EXCLUSIVE OFFER: See inside Jim Cramer's multi-million dollar charitable trust portfolio to see the stocks he thinks could be potential winners. Click here to see his holdings for 14-days FREE.

Eagle Rock Energy Partners, L.P., together with its subsidiaries, develops and produces oil and natural gas properties in the United States.

TheStreet Ratings rates Eagle Rock Energy Partners as a sell. The company's weaknesses can be seen in multiple areas, such as its disappointing return on equity, generally disappointing historical performance in the stock itself and feeble growth in its earnings per share. You can view the full Eagle Rock Energy Partners Ratings Report now.

MarketAxess Holdings

Owners of MarketAxess Holdings (NASDAQ: MKTX) shares, as of market close today, will be eligible for a dividend of 20 cents per share. At a price of $98.83 as of 9:36 a.m. ET, the dividend yield is 0.8%.

The average volume for MarketAxess Holdings has been 221,800 shares per day over the past 30 days. MarketAxess Holdings has a market cap of $3.6 billion and is part of the financial services industry. Shares are up 36.4% year-to-date as of the close of trading on Friday.

EXCLUSIVE OFFER: See inside Jim Cramer's multi-million dollar charitable trust portfolio to see the stocks he thinks could be potential winners. Click here to see his holdings for 14-days FREE.

Marketaxess Holdings Inc., together with its subsidiaries, operates an electronic trading platform that enables fixed-income market participants to trade corporate bonds and other types of fixed-income instruments worldwide. The company has a P/E ratio of 41.66.

TheStreet Ratings rates MarketAxess Holdings as a buy. The company's strengths can be seen in multiple areas, such as its robust revenue growth, notable return on equity, reasonable valuation levels, expanding profit margins and solid stock price performance. Although the company may harbor some minor weaknesses, we feel they are unlikely to have a significant impact on results. You can view the full MarketAxess Holdings Ratings Report now.

MarkWest Energy Partners

Owners of MarkWest Energy Partners (NYSE: MWE) shares, as of market close today, will be eligible for a dividend of 92 cents per share. At a price of $65.16 as of 9:36 a.m. ET, the dividend yield is 5.7%.

The average volume for MarkWest Energy Partners has been 1.4 million shares per day over the past 30 days. MarkWest Energy Partners has a market cap of $12.1 billion and is part of the energy industry. Shares are down 2.6% year-to-date as of the close of trading on Friday.

EXCLUSIVE OFFER: See inside Jim Cramer's multi-million dollar charitable trust portfolio to see the stocks he thinks could be potential winners. Click here to see his holdings for 14-days FREE.

MarkWest Energy Partners, L.P. engages in the gathering, processing, and transportation of natural gas. The company is also involved in the gathering, transportation, fractionation, storage, and marketing of natural gas liquids; and the gathering and transportation of crude oil. The company has a P/E ratio of 107.85.

TheStreet Ratings rates MarkWest Energy Partners as a hold. The company's strengths can be seen in multiple areas, such as its good cash flow from operations, expanding profit margins and largely solid financial position with reasonable debt levels by most measures. However, as a counter to these strengths, we also find weaknesses including a generally disappointing performance in the stock itself, unimpressive growth in net income and feeble growth in the company's earnings per share. You can view the full MarkWest Energy Partners Ratings Report now.

More About Dividends:

One benefit of owning a stock is the potential that you will be paid a dividend. The distribution of dividend payments is another way for a company to share its profit with you. A dividend means that the company pays you a certain amount of money, either as a one-time payment or more commonly on a quarterly basis, for each share of stock you own.

Many times, dividends come at the expense of greater price appreciation, because the company is distributing its profits to shareholders rather than reinvesting the profits back into the growth of the company. However, companies that pay dividends can be very attractive to investors when they offer a steady stream of income. There are some important terms and dates an investor should be familiar with before purchasing any dividend-paying companies. Let's work through an example to help better explain some of these terms:

On March 1, ABC Widget Company has decided that because it holds excess cash and lacks investment opportunities, it would like to reward shareholders with a regular quarterly dividend payment. The date for this particular announcement is known as the declaration date. It is on this date that the company announces the specific dividend payment along with the holder-of-record date (aka record date) and the payment date. The company announces that a dividend payment of 25 cents per share will be payable March 31, 2012 (the payment date) to all shareholders of record at the close of business on March 16, 2012 (holder-of-record date). What does this all mean? Well the short story is that the company looks at its records on March 16 and anyone listed on the books as an owner of ABC Widget company will be eligible for the dividend payment (on March 31).

The one other important term to remember is the ex-dividend date. The ex-dividend date (typically two trading days before the holder-of-record date for U.S. securities) is the day in which a company begins trading without the dividend. In order to have a claim on a dividend, shares must be purchased no later than the last business day before the ex-dividend date. A company trading ex-dividend will have the upcoming dividend subtracted from the share price at the start of the trading day. Many times, the price of a stock will increase in anticipation of the upcoming dividend as the ex-dividend date approaches, yet will fall back by the amount of the dividend on the ex-dividend date.