Points of Focus

• A small cluster of wallets made outsized gains betting on a Polymarket contract tied to a ZachXBT investigation into Axiom.
• On-chain analysts flagged early, concentrated positions that paid out before the report went public.
• The episode raises new questions about information leakage and how prediction markets price non-public signals.

Days before ZachXBT published his investigation into alleged misconduct at Axiom Exchange, a prediction market was already leaning toward the outcome. When the report dropped, a handful of bettors walked away with large profits. The timing and concentration of those bets now sit at the center of a fresh debate about who knew what, and when.

Early bets clustered on Polymarket

The contract asked a simple question: which company would ZachXBT name in his insider-trading probe. Trading volume swelled to nearly $40 million before publication, according to on-chain data reviewed by multiple analytics groups. While other candidates led the odds for much of the week, positions backing Axiom built quietly and then paid out in full once the investigation went live.

One account, known as predictorxyz, accumulated hundreds of thousands of “Yes” shares at prices near $0.14. When the market resolved, the position reflected about $411,000 in profit on a stake under $70,000.

Trader predictorxyz (possibly an insider) bet $65.8K that Axiom would be accused of insider trading by @zachxbt when the odds were only 13.8%.

He won and made a profit of $411.4K!https://t.co/HqhvH1BRpJ pic.twitter.com/6ZFY5xOZ3B

— Lookonchain (@lookonchain) February 26, 2026

ZachXBT traces funding, flags an active user

ZachXBT didn’t dismiss the pattern. After the payout, he examined the source of funds used by predictorxyz, calling the timing of a freshly funded account “suspicious.” Using transaction-timing analysis, he traced the USDC through instant exchanges to a Solana address he says belongs to an active Axiom user with the handle “JustADegen” on Fomo. He also noted recent token-bundling activity linked to that wallet.

I investigated the source of funds for ‘predictorxyz’ as I agree $70K USDC funded on a newly created prediction markets account is suspicious.

I used timing analysis and traced it back through instant exchanges to the following Solana address:… pic.twitter.com/3mgMhLsgoC

— ZachXBT (@zachxbt) February 26, 2026

The finding doesn’t prove insider trading. It does, though, tighten the window between knowledge of a pending report and profitable positioning in a related market.

On-chain analysts see a broader pattern

Other researchers report similar clustering. Data compiled on Dune shows the eight most profitable wallets on the contract earned roughly $1.2 million combined. By contrast, more than 50 wallets posted losses totaling about the same amount, with two wallets alone down roughly $366,000.

Onchain researcher Defioasis said eight of the top ten profit-making wallets appeared “insider-like” based on behavior, pointing to addresses that traded only this single market and exited immediately after resolution. Those claims rely on pattern analysis rather than identity, and attribution remains uncertain without exchange cooperation.

一共有超过 3,630 个 Polymarket 地址在 ZachXBT 内幕调查事件中押注“Axiom”，其中 56.2% 的地址获得正向盈利

– Top10 大额获利地址中有 8 个均可被视为是内幕地址，合计盈利超过 120 万美元，基本特点是交易的市场次数极少甚至只有唯一一个

– 有 3 个地址获得超过 10… pic.twitter.com/mOJ4jEKoS4

— defioasis.eth (@defioasis) February 27, 2026

Where leaks can happen

ZachXBT has acknowledged a practical risk: he contacted Axiom for comment and interviewed multiple people before publishing. That outreach means several individuals knew a report was imminent. Any informed party could’ve placed a bet or tipped someone else. Polymarket operates offshore and doesn’t require identity checks, which makes firm conclusions difficult.

I think a leak is probably inevitable given a few people had to be interviewed for the case.

— ZachXBT (@zachxbt) February 25, 2026

Why prediction markets feel exposed

This isn’t the first time a prediction market has rewarded early information. In January 2026, a Polymarket bet on the removal of Venezuela’s president paid out roughly $400,000 shortly before a real-world event. Since then, lawmakers in the US have floated limits on political prediction markets, and several countries have blocked Polymarket over gambling concerns.

For you as a reader, the takeaway isn’t that prediction markets “fail.” It’s that they price information fast, including signals that never reach the public. When investigations move markets, the line between research and tradable knowledge becomes thin.