The initiation of coverage by Jefferies with a Buy rating and a price target of $20 suggests a positive outlook for Janus Intl Gr's stock. This recommendation is likely to influence investor sentiment positively in the short term, as analyst ratings from reputable financial institutions can significantly impact stock prices. The specific mention of a $20 price target indicates a substantial potential upside from current levels, assuming the stock is trading below this target at the time of the report.