Key Takeaways Cannabis leveraged ETFs surged last week on optimism over potential U.S. marijuana reclassification.Space & defense-linked leveraged ETFs gained on contracts and IPO-driven sector buzz. Inverse natural gas ETFs jumped as mild weather and strong supply pressured prices.Wall Street was upbeat last week. The S&P 500 lost 0.6%, the Dow Jones advanced 1.1% and the Nasdaq retreated about 1.6% last week. The tech stocks were beaten down, taking a toll on the Nasdaq-100 as well as the S&P 500. Roundhi ...