It used to be common sense that investors couldn't simply realize that it's cold outside, buy shares in a "cold weather play" like Canada Goose and make money, CNBC's Jim Cramer said on Friday.
But in this market, Cramer has watched common-sense investing come back into the fold as a winning strategy.
"Now, I'm not saying that stock-picking's back and index funds and ETFs are dead. No, those days are never coming back," the "Mad Money" host said. "But I am saying that it's possible to pick a group of stocks that are better than average by just keeping your eyes open."
For example, investors who bought shares in oil service company Schlumberger after President Donald Trump announced he would open the country's off-shore sites for oil exploration made money. Investors who bought McDonald's after the company announced a new dollar menu made money.
"For almost two decades, picking stocks with no rigor almost always cost you money. I don't know how long the obvious will keep being profitable," Cramer admitted. "But at least for the moment, simple common sense is actually making people money in this market and that's pretty darned wonderful, if you ask me. But enjoy it while it lasts."
Cramer has long dubbed the financials as the market's most important leadership sector. But after the labor report showed a distinct decline in retail jobs — which Cramer attributed to the rise of e-commerce — industrial and transport stocks caught fire.
Cramer said that the industrials likely rose because buyers hoped the Fed would be cautious with its rate hike agenda, and the transports popped because of the online shopping boom.
With that in mind, the "Mad Money" host turned to the stocks and events he'll be watching in the second week of the new year.
After one of the best years for the stock market that Cramer can remember, he wanted to get a better snapshot of the gains (and see what's ahead) by looking at the .
One of Wall Street's most relied-upon indexes, the S&P helps shed light on last year and, if analyzed properly, can make investors money in 2018, the "Mad Money" host said.
So Cramer went over the S&P's top performers for 2017 to see what they reveal about this year's layout, starting with the best of the best.
Cramer knows that looking back on a strong year for the markets shouldn't only include analyzing the best performers.
That's why the "Mad Money" host paired his analysis of the S&P 500's cream of the crop with a look at the index's worst-performing stocks, many of which could still recover in 2018.
"In a bull market, it's not that easy to be a real cellar dweller," Cramer said. "You have to commit some pretty grievous sins to end up on this list. But remember, this is an incredibly forgiving market, so it's important not to get too judgmental lest we miss some real opportunities."
"In the U.S., [marijuana is] not legal at the current time, but obviously numerous states are legalizing it for recreational purposes. Canada is going to legalize it for recreational purposes at the beginning of this coming summer," Sands told Cramer on Friday. "It's clear-cut that it's going to be a big market, and we think that it only makes sense to position ourselves to participate in that in the beverage end of the business."
Sands, who runs a massive alcohol distributor that owns ubiquitous brands like Corona, Modelo and Svedka, said his company wouldn't be able to participate in the U.S. market until cannabis becomes legal on a federal level.
But the CEO had some interesting prospects in his company's liquor segment that he hoped would continue to drive gains in the meantime, he told Cramer.
"Premium rum is a category that we think is ready to take off," Sands said. "We thought that this was a good opportunity to participate in that category with a great brand called The Real McCoy. And I'd say the same thing for high-end brandy."
Cramer loves a good breakup, and the latest one he focused on was Wyndham Worldwide's plan to spin off its hotel business to become a pure play on timeshares and vacation rentals.
The "Mad Money" host likened the breakup to Marriott's move in 2011, when the company spun off its vacation rentals division. Both halves of that split are up big, making Cramer wonder whether Wyndham could see similar results.
"If you don't already own Wyndham Worldwide, you might want to wait for the breakup so that you can add to your position if we get a much-needed post-spin-off pullback in the timeshare division," Cramer said.
"Here's the bottom line: Wyndham Worldwide has been on fire, but with the spin-off of its hotel biz coming up next quarter, I think it's got more room to charge," he continued. "If Wyndham follows in the footsteps of the Marriott breakup, even a little bit, then Chapter 2: The Breakup could be just as good as Chapter 1: The Marriage."
In Cramer's lightning round, he zipped through his take on some callers' favorite stocks:
Kinder Morgan: "What can I say? It's going to do well just because we're out of pipe. It's not my favorite. I like Magellan Midstream Partners, MMP, which somebody initiated with a sell today. That person ought to come see me."
Royal Dutch Shell: "Royal Dutch Shell is not my favorite, but you know what? It's not bad. I mean, I know that sounds like damning or faint praise, but I've just been so impressed with the big-caps [like] Chevron."
Disclosure: Cramer's charitable trust owns shares of Schlumberger, Apple and Magellan Midstream Partners.