AI Coding Opens Quant Bot Access to Retail Investors as Brokerage APIs Expand

*Editor's Note: 'AI PRISM' (Personalized Report & Insight Summarizing Media) is an AI-based customized news recommendation and summarization service developed with support from the Korea Press Foundation. It selects and provides six tailored news items for each reader type.

1. Build an 'AI Trading Bot' in a Day Without Coding Skills...Sleep Soundly While Bots Trade U.S. Stocks

- Key Summary: With the spread of AI vibe coding, cases of retail investors with zero coding knowledge building auto-trading bots in a single day are increasing. Analysts note that investors who accumulated quant know-how in the cryptocurrency market have migrated en masse to the stock market following the crypto slump. Brokerages are expanding REST-based cloud APIs to build 24-hour auto-trading environments. However, server loads and cybersecurity risks could grow if thousands of bots simultaneously flood orders, a factor to consider when choosing a platform.

2. Will Samsung Foundry Win the iPhone Brain Chip?

- Key Summary: Bloomberg reported that Apple executives visited the Taylor, Texas fab to discuss A-series and M-series AP production cooperation. With TSMC currently handling Apple's entire AP volume and its production capacity hitting limits due to surging AI chip demand, expectations for Samsung Electronics benefits are growing. In the fourth quarter of last year, TSMC held a 70.4% share of the foundry market versus Samsung Electronics' 7.1%—a wide gap—but a successful order would be a symbolic milestone for the foundry's revival. Whether Samsung Electronics can restore its technological capabilities, after abandoning its own chip launch in 2023 due to Exynos yield problems, is cited as the key variable determining the order's prospects.

3. Insurance Stocks Left Out of Rally...Rotation Hopes Rising

- Key Summary: While KOSPI surged 60.96% this year, the KRX Insurance Index rose only 25.38%, underperforming KOSPI by about 35 percentage points. As of the 4th, the KRX Insurance Index had a PBR of 0.79x, the third-lowest among KRX sector indices, with a clear gap versus semiconductors (6.32x) and IT (4.62x). Observers say loss ratios could gradually decline if indemnity insurance reform and auto insurance system improvements move into full swing. Samsung Fire & Marine Insurance's (000810.KS) 2028 shareholder return ratio target of 50%, DB Insurance's track record of treasury share cancellation, and Hanwha Life Insurance's overseas business expansion are cited as differentiation points among individual stocks.

4. Credit Rating Downgrade Feared Amid Rights Offering Snags...1.8 Trillion Won Repayment Burden Through 2028 If Realized

- Key Summary: Hanwha Solutions (009830.KS) disclosed in its securities registration statement that borrowings subject to repayment or refinancing obligations through 2028 would reach 1.8002 trillion won if its credit rating is downgraded from 'AA-' to 'A+'. Net debt-to-EBITDA stands at 30.1x and total debt-to-EBITDA at 36.5x, already quantitatively meeting credit rating agencies' downgrade criteria. With the Financial Supervisory Service requesting a second amendment, the originally scheduled June 30 payment date could be pushed back, and the longer the offering is delayed, the harder it becomes to secure grounds for financial improvement within the first half. Amid existing controversy over shareholder value damage from the surprise rights offering, existing investors are advised to continuously monitor the credit rating direction and offering schedule.

5. Amid Vibe Coding Boom...'API Auto-Trading' Approaches 100 Trillion Won

- Key Summary: Combined transaction volume at the three open API brokerages reached 37.41 trillion won last year, and had already surpassed 17 trillion won by mid-April this year, with the industry expecting 60 trillion won within the year to be comfortably achievable. With Meritz Securities' API launch combined with the buoyant stock market, achieving 100 trillion won within the year is also being discussed. As algorithmic trading—once the exclusive domain of institutions and high-net-worth individuals—opens to retail investors through the popularization of AI vibe coding, brokerage platforms are evolving beyond MTS into trading infrastructure. Platform competitiveness of brokerages that seized open APIs first and fintech beneficiary potential are expected to emerge as medium- to long-term investment variables.

6. Money Moves to Stock Market...Fixed Deposit Accounts of 100 Million Won or Less Hit Six-Year Low

- Key Summary: As of the end of last year, the number of fixed-term deposit accounts of 100 million won or less was 21.629 million, the lowest level since the first half of 2019, while total deposits fell 2.2% year-on-year to 299.709 trillion won. Outflows from the cryptocurrency market were also clear, with holdings at end-February this year shrinking to 60.6 trillion won, about half the level at the start of last year. In contrast, fixed deposits exceeding 1 billion won held by high-net-worth individuals rose 6.7% year-on-year on a total deposit basis, showing diverging investment behavior by asset size. The structure of retail funds concentrating in the stock market is cited as a supply-demand indicator worth referencing in judging whether the liquidity-driven market will continue.