Companies:
 

There are now hundreds of companies in the marijuana business.  Most are very new, with questionable prospects.  The following is a list of the largest companies in the marijuana sector, who have been on the GreenUSA index for at least one year, and, are rated a "BUY":

 

Company                                                                    Symbol

Homeland Security                                                    HSCC

CannaVest Corp.                                                       CANV

Medical Marijuana Inc.                                              MJNA

Nuvilex, Inc.                                                               NVLX

TerraTech Corp.                                                         TRTC

Cannabis Science                                                      CBIS

American Green                                                         ERBB

Hemp, Inc.                                                                  HEMP

GreenGro Technologies                                           GRNH

Mentor Capital                                                           MNTR

Neutra Corp.                                                              NTRR

Plandai Tech                                                              PLPL
Endexx Corp.                                                             EDXC

GrowLife                                                                     PHOT

 

 

The algorithm GreenUSA uses to select these stocks are weighted towards companies with low prices (most under $1), companies which have been on our radar for awhile, and companies with a strong media prescence.