On September 17, Rambus rose 5.42% in regular trading, trading at $85.69/share, with turnover of $18.74 million. The stock rebounded sharply after falling over 7% in the prior session.

On the news front, storage sector stocks staged a broad-based recovery driven by a bullish outlook from Citi, which projects global memory capital expenditure to surge 46.5% year-over-year to $80.4 billion in 2027. Citi noted that supply-side constraints — including HBM capacity occupation and slower technology migration — are causing expansion to lag far behind demand, leaving the supply-demand gap difficult to close in the near term.

Rambus, a core supplier of memory interface IP and high-speed interconnect chips deeply tied to the storage value chain, had previously declined over 7% after major Silicon Valley AI firms called for slowing frontier AI development, which weighed on AI compute demand expectations. The current move represents a recovery alongside the broader sector. Among semiconductor peers, Intel rose 7.89%, Marvell Technology gained 6.85%, Micron Technology climbed 6.07%, and Advanced Micro Devices advanced 5.25%.

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