Significantly overvalued Proto Labs, Inc. (PRLB), a mid-sized prototyping and low-volume production industry player with promising long-term expansion prospects, had seen its revenue growth decelerate last year. After a vertiginous rush to a new high in 2018, sales plateaued around $458.7 million in 2019, before going a bit higher to $460.3 million in the last twelve months. In 2018, impressed by the future growth prospects, investors rushed to buy the stock, thus pushing Price/Earnings to the utterly insane ~70x touched in September 2018. Understanding that the bar was set too high and that