Truth Social. /Courtesy of Reuters Yonhap

As a paid service launches that delivers posts on the social media (SNS) platform "Truth Social," operated by U.S. President Donald Trump, 0.001 seconds faster than the public, five high-frequency trading (HFT) firms have already signed contracts, according to reports.

According to the Wall Street Journal (WSJ) on the 22nd (local time), five high-frequency trading companies have finalized contracts to use the "Truth API" system, which will officially debut on Aug. 1. The service essentially lets users see posts from major accounts with market-moving power—such as President Trump and Vice President JD Vance—earlier than general users.

Trump Media & Technology Group (DJT), which operates Truth Social, set the fee at $100,000 (about 148 million won) per month. For long-term contracts, it is proposing a discounted rate of $60,000 (about 90 million won) per month.

Major Wall Street investment firms already monitor Truth Social's timeline in real time and have built automated systems that execute large-scale stock transactions immediately when certain keywords appear. The artificial intelligence algorithms they run are designed to mechanically recognize not only geopolitical risk terms like "cease-fire" or "Iran," but also the distinctive sentence President Trump habitually uses when making major statements—"Thank you for your attention to this matter"—and to place buy or sell orders at once.

In fact, President Trump's posts have been shown to move financial markets immediately. According to a survey by financial data firm DTN, when President Trump posted about the Middle East situation last month, more than 2 million shares changed hands within one minute. In the process, energy and industrial stocks swung more than 2%.

In particular, when a resolute response was declared on June 9 regarding the attack on a U.S. military helicopter, trading volume and value of defense stocks surged, and when a post two days later, on the 11th, hinted at the possibility of a dramatic peace deal with Iran and said airstrikes were on hold, related share prices collectively plunged.

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