Tomorrow, Tuesday, December 08, 2015, 27 U.S. common stocks are scheduled to go ex-dividend. The dividend yields on these stocks range from 0.6% to 15.7%. All of these stocks can be found on our

stocks going ex-dividend

section of our

dividend calendar

.

Highlighted Stocks Going Ex-Dividend Tomorrow:

Calamos Convertible & High Income Fund

Owners of

Calamos Convertible & High Income Fund

(NASDAQ:

CHY

) shares, as of market close today, will be eligible for a dividend of 10 cents per share. At a price of $10.87 as of 9:36 a.m. ET, the dividend yield is 11%.

The average volume for Calamos Convertible & High Income Fund has been 227,600 shares per day over the past 30 days. Calamos Convertible & High Income Fund has a market cap of $790.8 million and is part of the financial services industry. Shares are down 21% year-to-date as of the close of trading on Friday.

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The company has a P/E ratio of 7.32.

Medical Properties

Owners of

Medical Properties

(NYSE:

MPW

) shares, as of market close today, will be eligible for a dividend of 22 cents per share. At a price of $11.70 as of 9:36 a.m. ET, the dividend yield is 7.5%.

The average volume for Medical Properties has been 2.2 million shares per day over the past 30 days. Medical Properties has a market cap of $2.8 billion and is part of the real estate industry. Shares are down 14.9% year-to-date as of the close of trading on Friday.

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Medical Properties Trust, Inc. operates as a real estate investment trust (REIT) in the United States. It acquires, develops, and invests in healthcare facilities; and leases healthcare facilities to healthcare operating companies and healthcare providers. The company has a P/E ratio of 25.43.

TheStreet Ratings rates

Medical Properties

as a

hold

. The company's strengths can be seen in multiple areas, such as its robust revenue growth, reasonable valuation levels and expanding profit margins. However, as a counter to these strengths, we also find weaknesses including unimpressive growth in net income, weak operating cash flow and a generally disappointing performance in the stock itself. You can view the full

Medical Properties Ratings Report

now.

Canadian National Railway

Owners of

Canadian National Railway

(NYSE:

CNI

) shares, as of market close today, will be eligible for a dividend of 24 cents per share. At a price of $56.32 as of 9:36 a.m. ET, the dividend yield is 1.6%.

The average volume for Canadian National Railway has been 1.2 million shares per day over the past 30 days. Canadian National Railway has a market cap of $45.5 billion and is part of the transportation industry. Shares are down 17.4% year-to-date as of the close of trading on Friday.

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Canadian National Railway Company, together with its subsidiaries, engages in rail and related transportation business in North America. The company has a P/E ratio of 18.02.

TheStreet Ratings rates

Canadian National Railway

as a

buy

. The company's strengths can be seen in multiple areas, such as its revenue growth, impressive record of earnings per share growth, compelling growth in net income, expanding profit margins and good cash flow from operations. We feel its strengths outweigh the fact that the company has had lackluster performance in the stock itself. You can view the full

Canadian National Railway 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.