Marijuana stocks in the United States have taken a substantial hit since Donald Trump became president.

On November 7th, the day before the presidential election, the U.S. Marijuana Index was at 108.76. As of March 26th, that number has dropped 35% to 69.96. This is slightly higher than the 3-month low of 66.84 which came on March 14th.

The high for the U.S. Marijuana Index over the past two years came on October 31st, 2016, when it was at 110.

The U.S. Marijuana Index “tracks the leading cannabis stocks operating in the United States.” Constituents “must have a business strategy focused on the marijuana or hemp industry”, and are required to meet a minimum trading criteria. The Index is “equal-weighted and rebalanced quarterly.”