If you're considering pot stocks for your portfolio, you could be on to something. The marijuana market is worth $150 billion per year worldwide, and the potential to create new cannabis-derived products, including beverages and edibles, has beer and wine giant Constellation Brands (NYSE: STZ) thinking legal marijuana sales could eclipse $200 billion in 15 years.

The hype in the cannabis sector picked up from where the excitement in the most popular cryptocurrency ended. Both the cryptos and cannabis created bandwagon effects. Bitcoin’s glow as an emerging investment opportunity faded. Will the pre-ordained largest cannabis producer suffer the same fate?

Aurora Cannabis Inc. (TSX:ACB)(NYSE:ACB) can be the representative of cannabis in the same breath as Bitcoin is in the cryptocurrency world. That could happen in the event the company’s annual production jumps by 36.84% from 570,000 kilograms to 780,000 kilograms not later than 2022.

Ontario's government-run cannabis distributor has cancelled its tender for couriers to make same-day pot deliveries.

The provincial corporation tasked with the online sale and distribution of recreational cannabis posted a cancellation notice on Friday via the Ontario government's tender portal.

The Ontario Cannabis Retail Corporation, which conducts e-commerce as the Ontario Cannabis Store, did not cite a specific reason for why it decided not to proceed, and the OCS was not immediately available for comment.

The corporation first posted the tender in January, calling for "expedited same-day delivery" for OCS orders. The project was set to begin as early as March in the Greater Toronto Area.

Interest in the marijuana industry is heating up among investors, and for good reason. Since the year began, the very first tradable cannabis exchange-traded fund, the Horizons Marijuana Life Sciences ETF, has practically tripled the returns of the broad-based S&P 500, which is having a stellar year of its own.

Speculation continues in the cannabis sector. Investor preference can change in a day or a week as no weed stock has exhibited momentum that could sustain or last longer than seven days. You can’t blame investors for being flaky given the repeated price spikes and dips.

Aphria Inc. (TSX:APHA)(NYSE:APHA) and Hexo Corp. (TSX:HEXO) are not the industry leaders, but are major players in the cannabis space. The pair belongs in the lower rung based on market capitalization ($2 billion to $3 billion bracket). Canopy Growth’s market cap (TSX:WEED)(NYSE:CGC) is 10 times more.

“It’s been a pretty tough, long winter for us. We both have families and we’ve had to make financial sacrifices,” said Breault, whose shop “Green Easy” remains shuttered as they await approval from Alberta Gaming, Liquor and Cannabis, the provincial agency overseeing Alberta’s cannabis industry.

Last week, the AGLC said an improving supply of marijuana allowed them to begin issuing 26 more retail licences, a slight easing on a moratorium bringing the number of Alberta retailers to 101.

But the slight increase in cannabis availability is still not enough to completely lift the moratorium, leaving an estimated 600 prospective pot retailers stuck in limbo.

No. 2. Runner-up. Second fiddle. All these terms have applied to Aurora Cannabis (NYSE:ACB) over the past couple of years. Even as the Canadian marijuana producer made one acquisition after another to fuel growth, it seemed to still always trail behind one other company. That company, of course, is Canopy Growth (NYSE:CGC).

The battle for supremacy in the marijuana industry is intensifying.

While Canopy Growth and Aurora Cannabis have managed to capture about 50% of the Canadian market, other pot companies are attempting to improve their positions. Some firms are successful at doing so, and others, not so much.

Let’s look at two marijuana companies to watch this coming May: Hexo (TSX:HEXO) and Cronos Group (TSX:CRON)(NASDAQ:CRON). One of these firms is currently flying high, and the other recently posted disappointing financial results.

Already the first country in the world to legalize recreational use of marijuana, Uruguay now aims to go further by becoming the first in Latin America to export it for medicinal purposes.

It's taken a year to get to this point but in Nueva Helvecia -- 120 kilometers (75 miles) west of the capital Montevideo -- the first harvest is ready to be sent abroad.

Employees of the U.S. company Fotmer -- the only one currently licenced to export -- are cutting and drying the plant before it is exported to Europe, Canada and Australia.

In taking this step, Uruguay is joining the ranks of medicinal marijuana exporters dominated by the United Kingdom, which according to United Nations data from 2016 had cornered more than two thirds of the market.

The world needs weed — and for marijuana products manufacturer Tilray (TLRY), that’s both a problem and a source of potential profit.