Shares of ASML Holding (NASDAQ: ASML) charged sharply higher on Tuesday, jumping as much as 5%. The catalyst that sent the chipmaking equipment provider higher was robust sales from one of the company's biggest customers. Taiwan Semiconductor Manufacturing (NYSE: TSM), commonly known as TSMC, is one of ASML's biggest customers, as the premier manufacturer of the world's most advanced AI chips. However, ASML's near-monopoly on the EUV lithography systems that produce the most advanced AI chips -- and its track record of execution -- illustrate why it deserves a premium. This Rare Signal Is Flashing AgainIn 2009, a "Double Down" signal flashed for a little-known chipmaker called Nvidia.