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TrustFinance Global Insights
Feb 06, 2026
2 min read
4

Japanese pharmaceutical stocks experienced a significant decline in Tokyo trading following the launch of a new U.S. government website offering discounted prescription drugs. This move has sparked investor concern over future drug pricing and profitability.
Leading Japanese drugmakers saw their shares fall sharply. Sumitomo Pharma sank 4.5 percent, while Roche affiliate Chugai Pharmaceutical lost 3.1 percent. Takeda Pharmaceutical, the nation's largest drugmaker, declined by 1.5 percent. The pharmaceutical sector overall dropped 1.6 percent, becoming the second-worst performer among the Tokyo Stock Exchange’s 33 industry sub-indexes.
The downturn is a direct reaction to the unveiling of TrumpRx.gov. This initiative follows deals with 16 major global drugmakers to provide most-favoured nation prices to American consumers. The policy is expected to increase pricing pressure on pharmaceutical companies operating in the large U.S. market.
The negative market reaction highlights investor sensitivity to U.S. drug pricing policies. The long-term impact on the earnings of Japanese pharmaceutical companies will be a key factor for investors to monitor closely moving forward.
Q: Why did Japanese drugmaker stocks fall?
A: They fell after the US government launched TrumpRx.gov, a website offering discounted medicines, which raised concerns about lower drug prices and reduced profits.
Q: Which companies were notably affected?
A: Sumitomo Pharma dropped 4.5 percent, Chugai Pharmaceutical lost 3.1 percent, and Takeda Pharmaceutical declined 1.5 percent.
Source: Investing.com

TrustFinance Global Insights
AI-assisted editorial team by TrustFinance curating reliable financial and economic news from verified global sources.
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