If you're waiting for proof that the economy is turning itself around, then you'll miss most of the move, Jim Cramer told his Mad Money viewers Wednesday. Investors cannot wait for the all-clear to sound, they need to start buying now, before the end of the bad news.

The stock market is, after all, a forecasting machine. So while the semiconductor companies are reporting abysmal results this quarter, the markets are sending shares higher on the promise that the second half of the year will be far better than the first.

Semiconductors are the building blocks of the new economy, Cramer said, and that's why we're seeing big gains. Shares of Skyworks Solutions (SWKS) - Get Report were up 3.8%, Broadcom (AVGO) - Get Report rose 4.3% and Nvidia (NVDA) - Get Report gained 1.9% by the close. If you wait for the companies to tell you things are better, you'll have already missed the move.

Cramer also recommended Lam Research (LRCX) - Get Report , which soared 5.1%, as this semiconductor equipment maker is always among the first to bottom.

The same concept applies to housing, Cramer told viewers. Shares of Lennar (LEN) - Get Report skyrocketed 7.9% Wednesday after the company said it's seeing an increase in foot traffic on its properties. That means now is the time to buy, not six months from now when the earnings actually begin to rise.

Cramer and the AAP team trimming a few positions into market strength. 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.

Valuing Apple Shares 

How should investors value shares of Apple (AAPL) - Get Report after reports the company has slashed its iPhone production by 10% due to weakening demand? Cramer said investors have a choice. They can view Apple as simply a hardware maker, or they can view it for what it could become.

In Tuesday night's interview, Apple CEO Tim Cook told Cramer that Apple's biggest contribution to mankind is likely to be in healthcare technology, as its devices and services are revolutionizing how people view their health. From the Apple Watch with a built-in EKG to platforms for medical research and health records, Apple is leading in health innovations.

So while many Wall Street analysts are mired in the 60% of Apple's revenues that are iPhone related, Cramer said he'd rather view Apple for its future potential in healthcare and beyond. 

Executive Decision: Constellation Brands 

In his first "Executive Decision" segment, Cramer spoke with Rob Sands and Bill Newlands, the outgoing and incoming CEOs of Constellation Brands (STZ) - Get Report , the wine and spirits maker that saw its shares plunge 12.4% after the company slashed its full-year guidance on weakening wine sales.

Sands explained that all of the weakness they're seeing is in the low end of the wine market, a segment they've previously announced. Newlands added that they are especially pleased with their beer business. He said they have a strong brand family in beer.

But while wine may be lagging, Sands noted that cannabis in Canada, which was legalized in October, is now a $6 billion a year business and Constellation's stake in Canopy Growth (CGC) - Get Report gives them 20% to 30% market share in that country. Canopy should achieve $1 billion in annual revenues in the next 12 to 18 months, he added.

Finally, Sands said that he, and his brother, are so confident in the outlook at Constellation that they've purchased a combined one million shares over the past week. Cramer said if you're buying your own stock, that "says it all."

TheStreet Recommends

Over on Real Money, Cramer is sharing his unique perspective on the markets and on the companies and CEOs he knows best. Get more of his insights with a free trial subscription to Real Money.

Executive Decision: Canopy Growth

In his second "Executive Decision" segment, Cramer sat down with Bruce Linton, chairman and co-CEO of Canopy Growth Corp., the leading cannabis provider in Canada.

Linton said this was the first year that Canopy has been invited to the JPMorgan Chase (JPM) - Get Report healthcare conference, as the pharma industry is finally beginning to see the potential for cannabis to disrupt the status quo for pain management, mood disorders, sleep therapies, animal health and more. He added that recreational use of cannabis is bolstered by science and good science creates protectable intellectual property. That's why Canopy is actively filing patents in both the U.S. and Canada.

Linton said there are currently over 85,000 patients buying cannabis products to treat sleep and anxiety issues, as no one is excited about the current standard of care. Canopy is currently studying how cannabis could be used in pain management to reduce dependence on opioids.

Linton was also upbeat about legalization efforts for both medicinal and recreational use around the globe.

Executive Decision: DexCom

In his final "Executive Decision" segment, Cramer sat down with Kevin Sayer, president and executive chairman of DexCom (DXCM) - Get Report , the glucose monitoring company.

Sayer said DexCom's strong results stem from their superior products. He said every generation is better than the one that came before it and customers have spoken, they want the latest and greatest technology.

DexCom's latest sixth generation monitor is the first to be labeled as "no finger sticks", which means patients can rely on the technology under normal circumstances and only prick their fingers in special situations. DexCom has also partnered with Apple, allowing data from DexCom's monitors to flow directly to a patient's iPhone and soon directly to their Apple Watch, as well as to physicians and loved ones as desired.

Sayer concluded by saying that DexCom is the most gratifying place to work, as they're saving lives every single day. 

Lightning Round

In the Lightning Round, Cramer was bullish on Turtle Beach (HEAR) - Get Report , Logitech International (LOGI) - Get Report , Chevron (CVX) - Get Report , BP (BP) - Get Report , Centene (CNC) - Get Report , Viacom (VIAB) - Get Report , CBS Corp (CBS) - Get Report , Churchill Downs (CHDN) - Get Report , AutoZone (AZO) - Get Report and Boyd Gaming (BYD) - Get Report .

Search Jim Cramer's "Mad Money" trading recommendations using our exclusive "Mad Money" Stock Screener.

To watch replays of Cramer's video segments, visit the Mad Money page on CNBC.

To sign up for Jim Cramer's free Booyah! newsletter with all of his latest articles and videos please click here.

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