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Resonant was a pioneer in new methods for designing radio frequency filters, which demonstrated software doing so in roughly half the time, often with simpler designs.  Though its fate was not as dire as that of its sister company, Superconductor Technologies, it gradually became clear that new management were slick talkers with little regard for ordinary shareholders.  Furthermore Akoustis, which I still cover privately, was making better headway in WiFi 6 and 5G with a completely different business model.  Thus, it was no surprise when Resonant wound up being sold to Murata at the rather disappointing price of $4.50 per share.  Nonetheless, my valuation analysis on RESN through the years lead to profitable trades, and this section stands as an example of how such analysis can help keep investors from getting hurt even in speculative technologies.