Several colorful credit cards piled atop one another

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MasterCard (MA -1.20%) announced its first and only stock split on Dec. 10, 2013, splitting shares 10-for-1 on Jan. 21, 2014. Visa followed MasterCard's move a year later, announcing a 4-for-1 stock split in January 2015, which was completed on March 18, 2015.

Company

Stock split

Date of Split

Pre-Split Dividend

Post-Split Dividend

MasterCard

10-for-1

Jan. 21, 2014

$0.60 per share

$0.11 per share

Visa

4-for-1

March 18, 2015

$0.48 per share

$0.12 per share

Data source: Company SEC filings. 

MasterCard's stock split somewhat obscured a substantial dividend increase in 2014. The company declared a $0.11 per share dividend, which, adjusted for the 10-to-1 split, represented an 83% increase over the company's $0.60 per share dividend paid before the stock split.

Does the stock split matter?

Stock splits are truly superficial corporate events. When a company splits its shares, the number of shares each shareholder owns increases, and the value of each share falls proportionately. Thus, by splitting its stock, MasterCard shareholders owned 10 times more stock after the split, each valued at one-tenth of the pre-split value per share.

One can conceptualize the effects of a stock split by thinking about a pizza. Whether cut into 4 slices or 8 slices, the size of the whole pizza does not change. The only thing that does change is the size of each slice.

Warren Buffett's Berkshire Hathaway is infamous for having never split its class A shares. As a result, the company's Class A shares trade for more than $222,000 each at the time of writing. Class B shares, which have been split multiple times, trade for a much more affordable price of $148. There is no real difference between what the two stocks offer, except that Class B shares have 1/1500th of the ownership as a Class A share.

Why would MasterCard split?

Theoretically, a lower share price allows more investors to buy a company's stock. If MasterCard had never split its shares, a single share would trade for about $970 today compared to the current price of roughly $97 per share. 

It is generally better to buy and sell stocks in lots of 100 shares, as these so-called "round lots" of stock are given preference to "odd lots" of 99 shares or fewer by brokers and stock exchanges. By splitting its shares 10-for-1, a round lot of 100 shares of MasterCard stock is worth just $9,700 today vs. the $97,000 price if its shares had not been split. Though the difference might be negligible for billion-dollar funds and institutions, it's very important for individual investors. 

What is MasterCard's split-adjusted IPO price?

MasterCard went public at a price of $39, and rose to $46 in its first day of trading. Adjusted for the stock split, its IPO price was $3.90 per share, and its stock closed at a split-adjusted price of $4.60 on the first day of trading. Incredibly, its per-share dividends of $0.19 in 2016 amount to a total annual payout of $0.76, or nearly 20% of the split-adjusted IPO price!

Will MasterCard stock split again?

Possibly. Recall that on the day of the stock-split announcement, MasterCard shares traded for $783 each. Currently, shares trade for about $95. One would surmise that MasterCard has a long way to go before the company feels obligated to split its shares once again. To reach the price of the last stock split, MasterCard's value would have to increase 724%, which would value the company at more than $856 billion compared to its current market capitalization of approximately $105 billion.