SK Hynix' third-quarter revenue hit 104.6 trillion Korean won, surpassing expectations, while its net profit came in at 39.5 trillion Korean won, missing forecasts.

According to a report from The Information, OpenAI plans to purchase Google's artificial intelligence chips.

According to data from Bitget, South Korea’s KOSPI index opened 116.95 points higher on Wednesday, October 28, with a 2.07% gain, at 5755.29 points. Samsung Electronics rose 2.9% and SK Hynix increased by 2%.

Robinhood’s third-quarter earnings missed market expectations, as slowing crypto trading and rising expenses overshadowed strong performance in its options and prediction markets businesses. The company reported earnings per share (EPS) of $0.51, below the $0.55 consensus analyst estimate compiled by LSEG, with shares falling more than 7% in after-hours trading. In the third quarter, Robinhood’s crypto trading revenue dropped 55% year-over-year to $120 million. However, options trading revenue rose 31%, and event contract revenue surged more than sixfold, driving overall trading revenue up around 19% year-over-year to $867 million. Meanwhile, the company’s quarterly operating expenses increased 16% year-over-year to $739 million, driven primarily by higher credit loss provisions, investments in new businesses such as Trump Accounts and Rothera, and rising marketing spending. Robinhood CFO Shiv Verma said prediction markets, which have generated annualized revenue of nearly $500 million in less than two years since launch, are a key growth driver for the firm. Both sports and non-sports event contracts saw strong growth, with non-sports contracts accounting for a larger share of total trading volume. Bill Birmingham, head of research at REX Financial, noted that revenue growth lags behind contract volume growth, indicating that growth is increasingly concentrated in a small number of areas. He added: “Prediction markets are becoming a second trading channel for the same core active traders, rather than an entry point to attract new customers.” Some of the trading volume may stem from shifts in existing trading activities rather than new business.

According to Reuters, citing two sources familiar with the matter, the U.S. Commodity Futures Trading Commission (CFTC) is again investigating Polymarket for potential violations of its 2022 settlement agreement, focusing on whether the platform has taken sufficient measures to block U.S. users from accessing its overseas main platform. The agency previously closed a similar probe in 2025 without filing charges. This latest review is part of a broader investigation launched by the CFTC earlier this year, covering Polymarket’s controls for verifying customer locations and its U.S. advertising campaigns. One source said the review centers on the company’s past controls and processes. The CFTC is also examining Polymarket’s customer onboarding procedures and consumer protection measures for its U.S. platform. Under the 2022 settlement, Polymarket agreed to stop serving U.S. users. In 2024, the CFTC and the U.S. Department of Justice launched separate related probes, and the FBI searched CEO Shayne Coplan’s New York residence that November. In July 2025, Coplan announced both investigations had concluded. Afterward, the company acquired a CFTC-licensed derivatives exchange and gradually rolled out its U.S. platform by the end of that year. Polymarket has previously stated it has improved its controls, explicitly prohibiting users from using tools like VPNs to bypass geographic restrictions, and has mechanisms to monitor misconduct and block restricted users from accessing its overseas platform. In April this year, U.S. prosecutors charged a service member with using insider information to place bets on Polymarket’s overseas platform, profiting $400,000; the indictment alleged he used a VPN to bypass restrictions. The defendant has denied the charges, and Polymarket said at the time it had referred the matter to relevant authorities.

SK Hynix plans to return approximately 100 trillion won to shareholders by 2026. The company intends to offer over 30 trillion won in cash dividends, repurchase and retire more than 60 trillion won worth of its own shares, and distribute a quarterly cash dividend of 20,000 won per share in the third quarter.

According to data from the BIT Stock Platform, U.S. stocks closed on Tuesday (October 27), with the Dow Jones Industrial Average rising 0.03%, the S&P 500 gaining 0.60%, and the Nasdaq Composite advancing 1.18%. Neocloud-related stocks rallied across the board: Nebius (NBIS) jumped 11.22%, Cipher Digital (CIFR) rose 9.99%, Galaxy Digital (GLXY) gained 9.57%, Applied Digital (APLD) climbed 9.42%, CoreWeave (CRWV) advanced 7.94%, and IREN increased 7.90%. Most optical communication concept stocks strengthened: Credo (CRDO) surged 10.77%, Astera Labs (ALAB) rose 10.47%, Applied Optoelectronics (AAOI) gained 6.96%, Coherent (COHR) climbed 6.38%, and Lumentum (LITE) advanced 5.88%. Storage stocks rallied across the board: Western Digital (WDC) rose 6.95%, SanDisk (SNDK) gained 3.92%, Seagate Technology (STX) advanced 3.67%, Micron Technology (MU) climbed 2.77%, and SK Hynix (SKHY) increased 1.92%. Semiconductor stocks also moved higher in tandem: AMD rose 5.45%, Marvell Technology (MRVL) gained 4.19%, Broadcom (AVGO) advanced 4.00%, Intel (INTC) climbed 3.61%, and both TSMC (TSM) and ASML rose 2.94%.