Why These Marijuana Penny Stocks Cost Investors $23.3 Billion in 2014

Criminals have taken full advantage of the burgeoning marijuana industry - which grew from $1.5 billion in 2013 to $2.7 billion in 2014.

Investors in marijuana penny stocks lost a whopping $23.3 billion in 2014 alone.

That was despite an SEC crackdown.

In May 2014, the agency warned the public that "fraudsters often exploit the latest growth industry to lure investors with the promise of high returns." It issued temporary trading suspensions of five different marijuana penny stocks (FusionPharm Inc., Cannabusiness Group Inc., GrowLife Inc., Advanced Cannabis Solutions Inc., and Petrotech Oil and Gas Inc.).

The SEC said it questioned "the accuracy of publicly available information about these companies' operations." Then in November, the agency formally charged four men with marijuana penny stock manipulation.

Here's how scammers used pot stocks to swindle investors out of billions - and which three cost investors most...

How Scams Using Marijuana Penny Stocks Work

Two factors make penny stocks more risky than other stocks.

First, they do not meet rigorous requirements of the New York Stock Exchange or other large exchanges. Instead, they're listed on dealer networks like OTC Markets - which have fewer listing standards.

Second, penny stocks trade for less than five dollars. The low price makes penny stocks extremely volatile.

Stock manipulators use this volatility to their advantage in "pump and dump" schemes. They buy a large chunk of shares in a company. Then they convince a mass of investors to buy those shares as well, which shoots up stock value ("pump"). The fraudsters then sell off their own shares ("dump"), which leaves investors with deflated stock price.

According to investment community Openfolio's data, marijuana penny stocks had the most drastic highs and lows of any industry penny stocks in 2014 - they have fallen 88% from their peak in the last year, compared to a 45.2% average decline of penny stocks across other industries.

"The volatility is mostly due to the novice investors who are flooding into the stocks on the promise that they'll find riches with the decriminalization/legalization of marijuana," Openfolio representative Simon Burns told Motherboard in an email. "In reality, few public marijuana companies are well positioned to capture this growth."​

Of all the marijuana penny stocks' dramatic falls, these three contributed most to the $23.3 billion investors lost in 2014...

Three of the Most Costly Marijuana Penny Stocks of 2014