Beware, stay away from Magnegas, do not hold them for more than 24-48 hours. This looks clearly as a pump and dump scheme (scam).
The company Magnegas ($MNGA) continuously files PR inconcrete and vague which are used to pump and dump the stock price. In addition, 2 Reverse Splits have been executed in 7 months to sustain self issued warrants and own shares are sold afterwards. In addition, the Santilli family was already involved in previous similar schemes:
Here it was explained in 2015 and the company continues operating the same scheme. It should be dellisted as it is a constant loss of money for private investors.
PLEASE READ THIS ARTICLE: (IT is from 2015 but exactly the same is still happening).