South Korea's KOSPI index closed on November 3 at 38% below its June record, even though SK Hynix calls its production capacity sold out through 2029. For investors in chipmakers, this is a clear reminder of a key risk: long-term customer contracts do not guarantee stock gains.
Memory manufacturers are indeed benefiting from fully loaded factories. But what matters more to shareholders is something else — whether orders will turn into actual shipments and how much money will ultimately remain with the companies. These risks also affect holders of shares in the U.S. tech giants that buy chips: after multibillion-dollar investments in AI infrastructure, some companies are left with billions of dollars in free cash, while others slip into the red.
SK Hynix contracts do not guarantee stock growth
SK Hynix's phrasing "sold out through 2029" also includes demand for which the company is still negotiating with customers. The memory manufacturer disclosed on October 28 long-term agreements covering more than 50% of 2027 and 2028 capacity, with prices under them subject to change within agreed limits.
Such contracts make revenue predictable, but they do not lock in every future sale and do not protect share prices. The KOSPI has fallen 38% from its June 22 record. Taiwan's TAIEX has lost 13.1% from its October 6 peak over the same period, and Japan's Nikkei 225 has fallen 12.8% from its June high through November 2 (the Japanese exchange was closed on November 3). China's STAR 50 technology index shed 24.1% in October alone.
U.S. chip buyers vary widely in free cash flow — the funds remaining after investments in equipment and buildings. Alphabet's figure went negative by $9.1 billion in the September quarter, including a $5.2 billion regulatory fine. Microsoft came in positive at $18.6 billion and expects to keep a positive result for the fiscal year ending in June 2027.
Microsoft estimated capital expenditures for the 2026 calendar year at roughly $170 billion, citing delays in bringing capacity online at third-party suppliers. The company stressed that customer demand still exceeds supply. Lower spending may merely reflect a shift in deliveries rather than weakening interest in computing capacity. A fully loaded factory does not by itself make a stock a good buy — what matters is whether signed orders turn into delivered equipment, whether it pays off, and how much money is left for shareholders.
Chip exports are growing, yet chipmaker stocks are getting cheaper
Trade statistics confirm strong demand: South Korea exported $56.4 billion worth of semiconductors in October, 259% more than a year earlier. About $50.1 billion came from memory chips, including HBM for AI accelerators.
At the same time, Korean chipmaker shares have become cheaper than during the 2008 crisis: the KOSPI Semiconductor sector index was valued on October 28 at just 2.8 times expected annual earnings, versus a historical average of about 9.8. Such a low valuation shows that many investors still view memory manufacturing as a cyclical business where a boom is followed by a downturn.
Sharp rebounds do not change the overall picture. The KRX exchange again triggered a sidecar on buying on October 28, when the KOSPI rose more than 4% after SK Hynix's report — this mechanism suspends automated program buying for five minutes. Judging by such jumps, investors react sharply to every company disclosure and are waiting for confirmation that orders will turn into shipments and profit.
Cryptalist analysis: The divergence between record memory exports and historically low multiples for Korean chipmakers reflects a structural shift in how the sector is valued: the market has stopped paying for long-term contracts and demands proof that orders convert into cash flow. Until this gap is closed by confirmed shipments and sustained margins, volatility in memory makers' shares and those of their U.S. customers will remain elevated, and the risk of overheating in AI infrastructure spending will weigh on the entire technology segment.