When Burger King and its wealthy backer 3G Capital acquired Tim Hortons back in 2014, many Canadian investors were heartbroken. Not only was one of Canada’s iconic brands going to be held by a U.S. parent, but Tim Hortons shares had been a terrific investment since the company was spun off of its former parent.

But not all is lost, since the combined company is still available as an investment. Restaurant Brands International Inc. (TSX:QSR)(NYSE:QSR) boasts a pretty impressive shareholder list too, with both Warren Buffett and Bill Ackman owning substantial parts of the company. Buffett owns 8.43 million common shares, while holding $3 billion worth of preferred shares. In total, his investment is worth about $3.5 billion.

While Ackman’s stake isn’t as large as Buffett’s, he still owns nearly 38 million common shares, good enough for a current value of more than $2.1 billion. When Ackman announced his investment back in January, he held out hope that the company’s very generic name meant it would make more acquisitions over time, a strategy he liked.

Many investors, happy to be on the same side as these two heavyweights, would be satisfied to buy shares just on that reason alone. But investing isn’t quite that simple. Let’s take a closer look at both the positive and negative aspects of an investment in the company.

The bull case

As far as I can tell, there are two main parts to the Restaurant Brands’s bull thesis.

The first is the growth potential, as Ackman touched on. The combined company is now the third-largest fast food company in the world, which gives it all sorts of clout. Perhaps a stock like Wendy’s might be a little big for the newly combined entity to swallow, but there are plenty of smaller fast food chains out there that can be acquired.

The other big thing going for Restaurant Brands is 3G’s reputation as managers who are aggressive cost cutters. Buffett knows this firsthand, as he teamed up with 3G in the big Heinz deal of 2013. Under 3G’s leadership, Heinz closed plants, laid off more than a thousand workers, and cut other costs. Those cost savings were a big part of what made the deal successful.

Investors are confident that 3G can do it again with Restaurant Brands. The formula is simple: 3G comes in, cuts a bunch of costs, uses the earnings to pay back some of the debt, and then re-levers the balance sheet to acquire a new prize. It’s the same formula that’s worked a bunch of times in the past.

The bear case

The bearish case surrounding Restaurant Brands is mostly based on valuation. Investors are paying a steep price for 3G’s expertise and the company’s growth potential.

Earnings have been negative over the last 12 months, so let’s look at the price-to-free-cash flow ratio instead. Excluding the effect of Buffett’s large preferred share position, the company still trades at a pretty expensive valuation of 23.6 times trailing 12 month free cash flow. If you include Buffett’s preferred shares as equity, the ratio balloons to close to 30 times trailing free cash flow.

I realize there’s a growth case to be made for the company, but the large debt load means there won’t be any big acquisition anytime soon. It owes more than $12.1 billion in long-term debt compared to total assets of $19 billion. And out of those assets, more than $14 billion worth are of the intangible variety. I’m not sure I’d be lending the company any additional money for a big acquisition without seeing it pay down some debt first.

There’s a lot to like about Restaurant Brands’s business. It can easily scale up, since 99% of its restaurants are owned by franchisees. It has other growth potential. And it has some very influential wealthy investors in its corner. But for my portfolio, I’ll pass. It’s just too expensive.

Want better picks than Restaurant Brands? We've got you covered!

Even though Buffett and Ackman are big investors in the company, we're just not overly bullish on Restaurant Brands International. Instead, we've got some other picks we're pretty excited about. There's enough here to give you a nice head start on building your portfolio.

For a look at five top Canadian companies that won't let you down, click here now to download our special FREE report, "Stop Following Bad Advice. Buy These 5 Companies Instead!"


Let’s not beat around the bush – energy companies performed miserably in 2015. Yet, even though the carnage was widespread, not all energy-related businesses were equally affected.

We've identified an energy company we think offers one of the best growth opportunities around. While this company is largely tied to the production of natural gas, it doesn't actually produce the gas. Instead, it provides the equipment required to get natural gas from the ground to the end user. With diversified operations around the globe, we think it's a rare find in the industry.

We like it so much, we’ve named it as 1 Top Stock for 2016 and Beyond. To find out why, simply enter your email address below to claim your FREE copy of this brand new report, "1 Top Stock for 2016 and Beyond"!

Fool contributor Nelson Smith has no position in any stocks mentioned.