Kioxia Unveils $5B Buyback as Memory Giants Rally

According to Kioxia Holdings’ latest financial report released on July 31, the Japanese NAND flash memory giant announced a massive share buyback plan worth up to ¥800 billion (approximately $5 billion), marking the largest repurchase initiative in the global NAND memory industry to date. The company plans to repurchase up to 30 million shares, representing about 5.5% of its outstanding shares, by October 30, 2026. Kioxia also aims to achieve a shareholder total return ratio of around 50% and will conduct a 1-for-3 stock split effective October 1.

Kioxia’s latest results showed a significant gap between pricing and shipment growth. Revenue reached ¥1.767 trillion, up 415% year over year and 76% quarter over quarter, while non-GAAP operating profit surged 28 times year over year to ¥1.33 trillion, with an operating margin of 75%. Net profit climbed to ¥842.17 billion, compared with only ¥18.28 billion in the same period last year. However, the results still fell slightly short of market expectations, with operating profit and net income below analyst forecasts. NAND average selling prices increased by about 70% quarter over quarter, while bit shipments grew only at a low single-digit rate, reflecting strong pricing power amid tight supply.

The company’s SSD and storage business generated quarterly revenue of ¥1.175 trillion, accounting for 66% of total sales, with more than 60% coming from data center and enterprise applications. Rising demand from AI infrastructure has become a major growth driver, pushing up average selling prices and improving profitability.

At the same time, Kioxia’s largest shareholder, Bain Capital, has fully exited its investment. Since November 2025, Bain gradually reduced its stake from around 44% in December 2025 to about 14% by mid-June 2026 before completing its exit in early July. Driven by the AI investment boom, Kioxia’s stock price has risen more than 4,000% since its listing, allowing Bain Capital to realize estimated gains of about $17 billion. The timing of the shareholder exit alongside Kioxia’s large-scale buyback has drawn market attention.

Kioxia’s move reflects a broader trend among global memory manufacturers. Samsung Electronics announced plans in June 2026 for a buyback program worth nearly KRW 90 trillion (around $58.6 billion), while SK hynix is preparing a shareholder return plan of approximately KRW 100 trillion (around $66.3 billion), including share repurchases and dividends. Micron Technology is also expected to have significant buyback potential after its current restrictions expire, supported by strong future free cash flow projections.

Nomura Securities estimates that South Korean listed companies could execute KRW 116 trillion in share buybacks in 2026, with Samsung Electronics and SK hynix accounting for about 90% of the total. The figure could rise further to KRW 274 trillion in 2027 and KRW 328 trillion in 2028. The market is gradually shifting from a “capital expansion cycle” toward a “shareholder return cycle,” with AI-driven earnings growth and corporate buybacks becoming key investment themes.

The foundation of this buyback wave lies in the unprecedented profitability created by AI demand. Strong growth in AI servers, HBM, and DRAM markets has generated substantial cash flow for memory companies. Unlike previous cycles focused on aggressive capacity expansion and price competition, leading manufacturers are now adopting a more disciplined approach by controlling supply growth and prioritizing shareholder returns. Kioxia has stated that it will expand production only slightly faster than the overall market to avoid oversupply risks.

However, risks remain. Despite strong earnings growth, Kioxia’s results were below some market expectations, and its second-quarter outlook was weaker than certain investors anticipated. Bain Capital’s complete exit after a massive stock rally has also raised questions about valuation sustainability. Future buyback capacity will depend on whether AI-driven memory demand remains strong and whether the industry can avoid renewed oversupply. After memory stocks experienced gains of 120% to 180% in the first half of the year followed by sharp corrections, short-term market volatility remains a concern.

Kioxia’s ¥800 billion buyback plan represents a major shift in the NAND flash industry, signaling a transition from aggressive investment and capacity expansion toward stronger shareholder returns. As AI continues to fuel demand for high-performance memory, major players including Kioxia, Samsung, SK hynix, and Micron are increasingly focusing on profitability, supply discipline, and capital efficiency.