KULR Technology (KULR -2.92%), a provider of energy storage solutions, saw its stock rally about 1,610% over the past two months. It had been languishing as a penny stock since early 2023, but it abruptly skyrocketed and transformed into a hypergrowth stock after it secured new contracts, regained compliance with the NYSE American's listing standards, and made a big Bitcoin purchase to launch its own Bitcoin treasury.But should you buy, sell, or hold KULR's stock after that breathtaking rally? Let's review ...