Taiwan Stock Trading Rules Set for Overhaul as FSC Tells Brokers to Bolster System Stability
Taiwan’s stock market faces a sharp increase in system traffic as it prepares for changes to trading rules. The Financial Supervisory Commission has instructed the Taiwan Stock Exchange to convene a meeting and require all securities brokers to strengthen their trading systems, ensuring financial resilience amid high-frequency trading. The move is critical not only to keeping investors’ daily trades running smoothly, but also to aligning Taiwan’s capital markets with international practices and maintaining financial stability. Systems overwhelmed by uneven loads could trigger market panic.
Starting in September 2026, the FSC plans to add three measures—system monitoring, multilayer redundancy and operational drills—to routine cybersecurity inspections of securities brokers. The requirements are intended to prepare for major changes ahead. Odd-lot intraday trading is scheduled to start earlier, at 9 a.m., by the end of 2026. In July 2027, the matching interval for intraday odd-lot trades will be shortened to one second, while the tick size for shares priced above NT$1,000 will be changed to NT$1. The measures are designed to ensure stable system operations.
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The history behind this eventTaiwan Stock Rout Knocks Out Systems at Five Brokerages, Regulator Steps Up Cybersecurity Oversight
Taiwan stocks plunged on the 8th, as panic selling and bargain-hunting orders hit brokerage trading systems simultaneously and caused sudden traffic spikes. Brokerage order services are critical to trade execution and the security of investor funds. Outages can prevent investors from cutting losses or completing trades, posing a major test of financial-market resilience and cybersecurity management.
Five brokerages experienced system crashes, login failures or slow connections that day because of excessive system loads, disrupting investor trading. Reports did not disclose the value of affected transactions. Taiwan’s Financial Supervisory Commission said it would closely monitor the brokerages involved and direct firms to strengthen peak-traffic monitoring, system capacity and information and communications security measures to ensure stable financial services.
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