The Horizons’ Marijuana Life Sciences ETF (HMMJ) (HMLSF) is the largest and most representative marijuana exchange traded fund in the markets. The fund strives to duplicate, to an extent, the performance of the North American Marijuana Index (NAMI). The NAMI was designed to track the performance of a basket of North American life sciences companies with a focus of their operations in the marijuana industry. Marijuana stocks, for the most part, have started the year off on a strong note as this marijuana ETF has risen 45% year to date. As lawmakers advocate for legislative changes in favor of marijuana legalization and the adoption of marijuana for medical purposes rises, the sector has responded favorably. Investors seeking opportunities in th budding marijuana sector may benefit from keeping tabs on several marijuana stocks.Click Here for the Top Cannabis Stocks In Focus This Week