A top Kalshi trader's suspicions about bot-driven streaming manipulation have been validated by Spotify, highlighting the vulnerability of digital platforms to fraud that can distort prediction markets. The incident underscores the need for robust detection systems in data-driven industries.
The Trader's Suspicion
Caleb Davies, a Minneapolis-based IT worker and top Kalshi trader, estimates he has made $1.2 million overall across prediction platforms, with $414,000 from Kalshi's culture markets alone. He told WIRED he analyzes Spotify data daily to inform his bets. This summer, he became convinced that botting was manipulating Spotify-related markets on Kalshi and Polymarket. He compiled evidence and contacted Spotify, Kalshi, and Polymarket.
Davies zeroed in on the song "Earrings" by Malcolm Todd, which surged to number one on a Spotify chart. He argued that prediction market traders were using bots to inflate streaming numbers. "Looking at the dataset of Sunday to Monday changes, it was a 11.24 sigma event, or a roughly 1 in 77 octillion chance of happening randomly," Davies wrote on X.
Spotify's Confirmation and Actions
Spotify confirmed to WIRED that it investigated the suspected manipulation and found evidence of artificial streaming. "All streaming services face ever-changing stream manipulation. Spotify has best in class detection and mitigation practices for manipulated streams, and we don't pay out associated royalties," said spokesperson Laura Batey. The company did not confirm whether the manipulation was directly tied to prediction markets, leaving that as Davies' theory.
Spotify adjusted its charts by culling over 500,000 artificial streams, which dropped Todd's song from first to fourth place. The correction was not immediate, however. By the time Spotify acted, Kalshi had already resolved its market, awarding traders who selected Todd's song.
Impact on Prediction Markets
Kalshi spokesperson Elisabeth Diana told WIRED: "We're in touch with Spotify and are actively investigating this matter." As a result of conversations with Spotify, Kalshi removed Spotify's logo from its markets and adjusted language that suggested Spotify had verified chart results.
Earlier, when Davies first raised concerns, Kalshi's head of enforcement Robert DeNault told him that only Spotify could definitively confirm botting, and suggested there could be non-suspicious reasons for the spike. DeNault also floated the idea that Kalshi traders might be copying bets from Polymarket. Davies countered: "Nobody from Polymarket profited from the fraud, that's what undermines Kalshi's argument, because they didn't have a Malcom Todd bracket."
Polymarket spokesperson Annabel Walsh refuted the theory: "It's actually not plausible since we didn't even have Malcolm Todd as an option on this Spotify market." Polymarket confirmed it is reviewing streaming manipulation but hasn't identified immediate manipulation.
| Metric | Before Correction | After Correction |
|---|---|---|
| Chart position of "Earrings" | #1 | #4 |
| Artificial streams removed | — | 500,000+ |
Implications for Data Integrity
The incident reveals how fraud in one digital platform (Spotify) can cascade into financial markets (prediction platforms). While Spotify has detection and mitigation practices, the lag between detection and correction allowed Kalshi to settle a market based on manipulated data. This highlights the importance of real-time integrity mechanisms and cross-platform communication. The motivations behind the streaming manipulation remain unknown, as no person or group has claimed responsibility. Malcolm Todd did not respond to requests for comment.
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