leki
Equity Investor, Multibagger Research, Technical & Fundamental Analysis
Sono-Tek's sales are mostly one-time customer purchases in a fairly niche market, which makes the business hard to scale. A post the author replies to says its technology is solid and has fended off Chinese competition well, but that its market may be smaller than management thinks. x.comÂ
Sono-Tek has three real AI infrastructure options, but its management has never scaled a business past $45M in revenue. Fuel cell coating, a 300mm photoresist platform and a Diamond Quanta thermal deal are real, and it is profitable with no debt. Yet its disclosed fuel cell customer is small PaxiTech, H1 solar orders are unlikely to repeat, and electronics fell 9%. At ~$86M market cap and ~50x earnings on 1% growth, it needs a $5M+ 300mm order or a senior semi-equipment hire. x.comÂ
Aehr Test Systems' very lumpy machine sales typically make for a poor business model. x.comÂ
SUSS MicroTec is in a far stronger position with TSMC than Sono-Tek, as the established back-end spin-coating incumbent in CoWoS that is positioning for TSMC's CoPoS panel packaging with AltaSpray and inkjet. The CoPoS pilot line finishes in June 2026, with a volume ramp in 2028-29, when larger panels and higher aspect ratios could make spin coating insufficient and favor spray. At about 10x EV/gross profit and 25x EV/EBIT, SUSS looks more attractive than Sono-Tek at 6.6x and 37x. x.comÂ
