Marvell, Memory Crunch, and Palantir's 51% August Run

Three separate threads dominated AI investing headlines on September 7: Marvell posted a blowout AI quarter and signaled photonics as its next move, South Korean memory giants are running dangerously lean on inventory, and Palantir quietly put up one of the best single-month performances in large-cap tech this year.

Key points

• Marvell’s AI business accelerated sharply in Q2, with the company now positioning optical photonics as a potential next leg of growth for moving data faster inside AI infrastructure.
• Samsung and SK Hynix have semiconductor inventory below 10 days, a level analysts describe as a significant supply shortage.
• South Korean equities surged nearly 3% on Monday, led by Samsung and SK Hynix, as foreign investors turned net buyers on AI demand optimism.
• Palantir shares rose 51.45% in August, against a roughly 6% gain for the broader tech sector.
• A head-to-head analysis of Broadcom vs. Marvell concludes both posted blowout AI chip quarters, but argues the choice between them comes down to risk tolerance, not just revenue size.

Marvell’s photonics bet: what it means for AI infrastructure

Marvell is already benefiting from the AI buildout through its custom silicon and networking chips. The new angle flagged in this week’s analysis is optical photonics, the technology that governs how fast data moves between chips and servers. As AI clusters scale up, interconnect bandwidth becomes a bottleneck just as serious as raw compute. Marvell’s existing footprint in data center networking puts it in a plausible position to capture photonics revenue if that market matures.

The Broadcom vs. Marvell comparison published today reinforces that both companies are legitimate AI chip beneficiaries, but frames the decision as a risk question. Broadcom carries more scale and diversification; Marvell offers a potentially higher-growth, higher-volatility profile. Investors comparing the two should weigh that tradeoff carefully. Nothing here is investment advice.

Memory supply crunch: a tighter market for AI hardware buyers

The inventory figures coming out of South Korea deserve attention. Samsung and SK Hynix are sitting on less than 10 days of semiconductor supply, which analysts flag as a meaningful shortage. For AI hardware buyers, tighter memory supply typically means upward price pressure, which could affect the economics of building and expanding GPU clusters.

Markets responded positively rather than with alarm. Korean equities jumped close to 3%, with foreign investors reading the inventory squeeze as a demand signal rather than a structural problem. Strong exports and a firmer won added to the tailwind. Whether that optimism holds depends on how quickly capacity can respond.

Taiwan’s role in the broader picture also came back into focus. A report from the Economic Times describes Taiwan, home to TSMC, using its semiconductor leverage as a form of diplomacy under growing pressure from allies wanting access to AI chip production. The geopolitical layer around chip supply chains remains active.

Palantir’s August: what drove the 51% gain?

Palantir’s 51.45% August return is a striking number even by the standards of a sector that has seen dramatic moves this year. The broader tech index gained roughly 6% in the same period, making the gap roughly 45 percentage points. The sources do not detail a single catalyst behind the move, pointing instead to sustained momentum around Palantir’s AI software positioning. Investors should note that a 51% monthly gain compresses future return expectations and raises questions about valuation at current levels. That is an observation, not a recommendation.

SpaceX: orbital data centers and a valuation fight

Coverage of SpaceX continues to develop, though much of the core story was covered in recent editions. The item with genuinely new information: Elon Musk has again moved up the timeline for SpaceX’s orbital data center project, with the first AI satellites, powered by Nvidia’s Vera Rubin NVL72 chips, now targeted for a Q4 2027 launch and “significant scale” in 2028. That Nvidia-SpaceX hardware partnership is a concrete detail that extends the Nvidia infrastructure platform story flagged in earlier editions. Meanwhile, professor Scott Galloway has put a $10 to $30 fair value on SPCX shares, citing mounting losses and heavy AI-related debt, against a current price near $148. The bull and bear cases for SpaceX remain sharply divided, and investors are essentially choosing between two very different reads of the same balance sheet.