In a market filled with cross-currents, investors need to look for a sign they can count on before making a purchase, Jim Cramer told his Mad Money viewers Monday. Fortunately, there is one of those signs, and it's called insider buying.

Company directors and executives sell stock for all sorts of reasons, Cramer reminded viewers. But they only buy stock for one reason, to make money. That's why when investors see insiders buying up stock, they need to take notice.

That was the case Monday with IBM (IBM) , a stock that's plunged from $153 to $115 as investors panned the Red Hat (RHT) acquisition. But today, no less than five board members, including IBM's CEO, all made big stock purchases as a sign of confidence in their company and in the acquisition. Cramer said he remains a huge fan of Red Hat and of IBM.

General Electric (GE) CEO Larry Culp also made a big stock buy today, but here Cramer was less excited, as former CEO Jeff Immelt also made similar buys, all of them ill-timed. In this case, Cramer said we know more about the problems than we did a few months ago, but there are a LOT of problems.

Bold stock buys from executives reminded Cramer of JPMorgan Chase (JPM) CEO Jamie Dimon making similar moves in the depths of the recession. Dimon purchased 1.5 million shares back then, shares that have since tripled.

Insider buying isn't the only catalyst, there are also company buyback programs, like the one Berkshire Hathaway (BRK.B) announced today, the company's first in six years. Apple (AAPL) , an Action Alerts PLUS holding, also has a monster buyback program, one that purchased $19.4 billion in shares last quarter alone. Cramer said investors need to take these signs of confidence seriously.

Oil Slick

If you're bullish on the oil stocks, you're making a bad call, Cramer warned viewers. Despite a strong showing this quarter from major oil producers like ExxonMobil (XOM) and Chevron (CVX) , all signs point to a big decline ahead.

Cramer's thesis was simple. If oil was truly headed higher, big oil would be leaning heavily on the oil service sector to help them grow. But instead, stocks like Schlumberger (SLB) , Halliburton (HAL) and Weatherford (WFT) are all trading near multi-year lows, lows that we haven't been seen since oil prices were half of what they are today.

Oil prices are a global market that depend on many factors, Cramer added. But with the U.S. surpassing production of 11 million barrels a day for the first time and Saudi Arabia keeping prices low, there simply aren't any catalysts to keep prices higher. The major oil companies appear to agree, he said, because if they felt otherwise, they'd be spending big to keep growing.

Digital Times

The New York Times (NYT) has finally got its act together by embracing its digital future, Cramer told viewers, and that's why shares have rallied 47% over the past 15 months.

Put simply, President Trump's constant attacks on this venerable news outlet have only helped bolster subscriptions. The paper now fully embraces its digital first strategy, which helped it deliver a four-cent-a-share earnings beat when it last reported, along with an 8.2% rise in revenues.

After a slow start to the company's digital paywall in 2011, the New York Times now boasts over three million subscribers. Cramer said even with a market that loves subscriptions, he'd still wait for a pullback in the stock, which now trades at 28 times earnings.

Cybersecurity Laggard

Cramer's been a big fan of the cybersecurity stocks, but there is one name that's been left behind, Symantec (SYMC) .

Symantec shares are off 29% for the year, and for good reason. Early this year, the company announced an investigation into its financials, news that sent shares plunging by 33%. Making matters worse, exactly what the investigation was about remained a mystery.

Enter Starboard Value, an activist investor which aimed to shake up the Symantec's board of directors and push for much needed operational changes. Cramer said Starboard has an excellent track track record and became a catalyst for owning the stock.

Flash forward to this quarter, when the company announced the investigation was complete and no material changes needed to be made to the company's financial reports. Cramer said with the weight now lifted, and Starboard involved, the stock of Symantec, which now trades at just 11 times earnings, now looks attractive.

Lightning Round

In the Lightning Round, Cramer was bullish on World Wrestling Entertainment (WWE) .

Cramer was bearish on Nokia (NOK) , Johnson Controls (JCI) , The GEO Group (GEO) and Stamps.com (STMP) .

Homework

In his "Homework" segment, Cramer followed up on a few stocks that stumped him during earlier shows. He said that Fox Factory Holdings (FOXF) , the aspirational auto parts maker, is seeing strong demand for its products and has shares up 61% for the year. He blessed owning the stock.

Next, he said that Allscripts Healthcare (MDRX) has a sub-par track record and it's crazy to bet on this company after so many disappointments.

Finally, Cramer said that Eros International (EROS) , the Indian media streaming giant is wildly speculative that's likely to always be a boom or bust situation. He blessed it for speculation only. 

Cramer and the AAP team say if you value Apple as a consumer-packaged goods company like they do, then shares are still significantly undervalued. Find out what they're telling their investment club members and get in on the conversation with a free trial subscription to Action Alerts PLUS.

JPMorgan, Schlumberger and Apple are holdings in Jim Cramer's Action Alerts PLUS member club. Want to be alerted before Jim Cramer buys or sells JPM, SLB or AAPL? Learn more now.

Over on Real Money, Cramer says it's worth remembering why the FANG stocks have been so great, and how they'll come back. Get more of his insights with a free trial subscription to Real Money.

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At the time of publication, Cramer's Action Alerts PLUS had a position in AAPL.

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