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New research reveals that prediction markets linked to military and defence developments may reward privileged access rather than collective wisdom, raising security concerns and prompting criminal investigations.
A new analysis has sharpened concerns that prediction markets may be rewarding access to confidential information rather than collective judgement. According to the Financial Times, data from the non-profit Anti-Corruption Data Collective suggests that bets linked to military and defence developments on Polymarket were correct about 52% of the time, far above the platform’s overall rate of roughly 14% and well ahead of political markets at about 25%.
The gap matters because the military contracts studied were not trivial or obscure. The Financial Times said the analysis covered more than 400,000 settled Polymarket transactions between January 2021 and March 2026, while the higher-performing military market slice was based on more than 2,500 dollars in trades with a dividend rate of 35% or less in long positions. The researchers argued this pattern points to a structural advantage for traders with privileged access, rather than a clean reflection of crowd wisdom.
That concern has already moved from theory to criminal cases. AP reported that Gannon Ken Van Dyke, a US special forces soldier, pleaded not guilty in Manhattan federal court after prosecutors accused him of betting on Polymarket using non-public information tied to a mission targeting former Venezuelan leader Nicolás Maduro. Prosecutors allege he placed around 13 bets totalling about $33,000 and made more than $404,000, with charges including theft of non-public government information, commodities fraud, wire fraud and unlawful monetary transaction.
Israeli authorities have also brought cases involving alleged misuse of classified military information on prediction markets. According to The Jerusalem Post, an Israeli civilian and an IDF reservist were indicted over wagers linked to operational details, underscoring how wartime markets can become exposed to security risks. The Anti-Corruption Data Collective has warned that the defence and military segment is especially vulnerable to insider trading because those with access to sensitive information can profit before events are public.
The scale of money flowing into such markets has only intensified scrutiny. Reporting cited by the Financial Times and other outlets shows very large volumes on contracts tied to possible US action against Iran and a potential Chinese move on Taiwan, while separate cases have raised suspicions around bets placed before major cultural and political announcements. Prediction-market operators say they are tightening controls: Polymarket and rivals such as Kalshi have highlighted monitoring partnerships with Solidus Labs, and Kalshi says it bars highly violent outcomes including war and kidnapping. Even so, academics have argued that these platforms often reward a small group of informed traders more than they capture any broad “wisdom of crowds”.
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Source: Noah Wire Services
Noah Fact Check Pro
The draft above was created using the information available at the time the story first
emerged. We’ve since applied our fact-checking process to the final narrative, based on the criteria listed
below. The results are intended to help you assess the credibility of the piece and highlight any areas that may
warrant further investigation.
Freshness check
Score:
7
Notes:
The article references recent events, including the indictment of Gannon Ken Van Dyke on April 23, 2026, and the publication of the Financial Times report on April 29, 2026. However, the article itself was published on May 2, 2026, indicating a delay of several days. Additionally, the article appears to be a translation of content from the Maeil Business Newspaper, which may affect its originality. The presence of translated content raises concerns about freshness and potential recycling of information.
Quotes check
Score:
6
Notes:
The article includes direct quotes attributed to the Financial Times and the Anti-Corruption Data Collective. However, these quotes are not independently verifiable through the provided sources, as they are based on a translated version of the original article. This lack of direct access to the original sources raises concerns about the accuracy and authenticity of the quotes.
Source reliability
Score:
5
Notes:
The article originates from the Maeil Business Newspaper, a South Korean publication. While it references reputable sources like the Financial Times and the Anti-Corruption Data Collective, the reliance on a translated version of the original article may introduce inaccuracies or misinterpretations. The lack of direct access to the original sources further diminishes the reliability of the information presented.
Plausibility check
Score:
8
Notes:
The claims regarding insider trading on Polymarket, particularly involving military and defense-related markets, are plausible and align with recent reports. The indictment of Gannon Ken Van Dyke and the analysis by the Anti-Corruption Data Collective support the narrative. However, the reliance on a translated version of the original article raises concerns about the accuracy of specific details.
Overall assessment
Verdict (FAIL, OPEN, PASS): FAIL
Confidence (LOW, MEDIUM, HIGH): MEDIUM
Summary:
The article presents plausible claims regarding insider trading on Polymarket, supported by recent events and analyses. However, the reliance on a translated version of content from the Maeil Business Newspaper, which references other sources, raises significant concerns about the freshness, originality, and independence of the information. The lack of direct access to the original sources further diminishes the reliability of the content.
