Polymarket study reveals media impact on prediction market prices

Not all news moves markets equally. A new analysis from Crypto Briefing’s prediction-market data desk, published under the Vera research label, tracked 476,000 news-story-to-Polymarket pairings across 618 distinct news sources over a 56-day window ending June 25, 2026. The central question: how often does a news story trigger a price movement in a related prediction market contract within one hour of publication? The answer, on average, is 15.2% of the time. But that average conceals a wide and telling dispersion. The sources that actually move markets The study, titled “Attention Gap,” found that major financial news wires produced move rates below the 15.2% overall benchmark. Meanwhile, some specialist accounts and niche sources consistently exceeded it. Topic matters even more than source A companion report called the “Reflex Map” extended the analysis further, examining 567,033 story-market pairs to measure how different news topics influenced repricing frequency. Certain topic categories triggered market movements at three to five times the rate of others. The reports don’t make claims about which topics produce the most accurate resolutions, just which ones cause the most pri...