This metric shows how much storage capacity the company sold and is therefore a reflection of demand for Seagate's products. Nearline HDD exabyte capacity shipped — the storage capacity sold to hyperscalers — saw impressive YOY growth of 43% to 195 exabytes, making clear where the demand is coming from. Valued at a market capitalization of $191.9 billion, STX stock has been on a tear this year. Shares of data-storage company Seagate Technology (STX) moved higher following the company's better-than-expected fourth-quarter results reported on July 28. "As AI accelerates data generation and its value, we see durable long-term demand for mass capacity storage," he said.