Stock Market Circuit Breaker Triggered During Huang Renxun's Visit to South Korea, with the Latter's Itinerary Drawing Much Attention, Retail Investors Launch Self-built Tracking Website
**June 5 (Friday) – South Korea’s stock market plunged steeply Friday, tumbling over 5% amid sharp declines in SK Hynix and Samsung Electronics that triggered a midday trading halt. By press time, the Korea Composite Stock Price Index (Kospi) had widened its drop to more than 6%, with SK Hynix sinking 9%. The sell-off appears tied to two key factors: Broadcom’s AI performance guidance falling short of expectations, and a prominent research report projecting a significant reduction in Nvidia’s memory chip allocations.**
**Notably, Jensen Huang, Nvidia’s CEO and widely known as the "AI Master," is scheduled to arrive in South Korea on the afternoon of June 5. Given his recent recommendation of MRVL that boosted its stock price, the market had widely anticipated his visit would lift South Korean equities. As a result, local investors have launched websites to track Huang’s itinerary and analyze how his comments might impact stock prices.**
**Huang’s planned activities in South Korea are
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Fidelity Lowers SpaceX IPO Minimum Account Requirement from $500,000 to $2,000
June 5 – Fidelity confirmed via its official website that it has significantly lowered the participation threshold for SpaceX’s IPO (ticker: SPCX). Customers now only need to hold at least $2,000 in assets in their retail brokerage accounts to submit a subscription intent for the offering.
The firm’s special move to slash the threshold to $2,000 for SpaceX stems from the space company’s plan to allocate up to 30% of its IPO shares to retail investors—far higher than the roughly 10% allocation typical for most IPOs. This larger pool of shares available to public investors has made the offering more accessible, prompting Fidelity to ease the entry requirement.
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Zcash Founder Retrospects on Critical Network Vulnerability, ZEC Plunges Over 30%
On the morning of June 5, Zcash founder Zooko released a post-mortem on the critical Orchard vulnerability. The announcement sent ZEC—Zcash’s native token—plummeting more than 30% to a current trading price of $431.64.
Security researcher Taylor Hornby unearthed the critical inflation bug in Zcash’s Orchard pool on May 29, notifying the Zcash Open Development Lab (ZODL) immediately. ZODL then led an emergency coordination effort across the broader Zcash ecosystem, and the fix was finalized on June 2.
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Prominent Research Firm Predicts NVIDIA's Rubin to Drastically Reduce Memory Allocation, Potentially Triggering Sharp Declines for Micron and SK Hynix
June 5 – Leading research firm SemiAnalysis published a report yesterday revealing that NVIDIA’s next-generation AI server cluster, codenamed Rubin NVL72, is undergoing a major adjustment to its memory configuration. To address supply chain bottlenecks and ensure the Rubin racks are delivered on schedule, the total capacity per individual rack has been abruptly cut from the original 55TB to 28TB. Additionally, most Rubin systems will now use 96GB SOCAMM modules instead of the initially planned 192GB units.
Though SemiAnalysis founder, CEO, and Chief Analyst Dylan Patel later clarified that “this is not a disaster” and emphasized the report was never meant to stoke fear, the market reacted sharply. Micron’s shares plummeted 7.7% in yesterday’s trading, and South Korea’s SK Hynix opened down 8.32% today.
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「Stock Market Wizard」 Serenity: Doubling Down on AAOI Since $28, Poised for Another Two- to Threefold Increase
On June 5th, AAOI posted a contrarian 10% price gain yesterday. Dubbed “The Stock God,” trader Serenity commented that AAOI has been one of his go-to dip-buy positions since the stock hit $28. Driven by robust demand for its 800G and 1.6T optical transceivers, AAOI could see its stock price double—or even triple—if the company delivers on its execution goals. Additionally, should the rumored partnership with AMD and NVIDIA (NVDA) pan out, supply chain bottlenecks could push average selling prices (ASP) higher and drive margin expansion—two factors the market has not yet fully priced into AAOI’s current valuation.
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