Polymarket User Makes $400,000 on ZachXBT’s Axiom Insider-Trading Investigation

Polymarket allows traders to use crypto assets to wager on outcomes ranging from elections to economic events, with contract prices often treated as real-time measures of collective expectations. The decentralized prediction market relies heavily on transparent blockchain records and wallet activity to establish credibility, making signs of trading on nonpublic information or coordinated bets a significant test of market integrity and a potential focus for regulators.

A Bloomberg Businessweek analysis flagged about $200 million of Polymarket trading during the first half as potentially linked to insider activity. The top 1% of profitable accounts captured more than half of all gains, while over 50% of winning wallets were created within 24 hours before placing their bets. Some traders also appeared to split positions across multiple related wallets before withdrawing proceeds through Coinbase, intensifying scrutiny of the platform’s fairness.

ZachXBT has long used onchain fund flows to investigate crypto fraud and insider trading, with his public findings often affecting the reputations of projects involved and their token prices. Although the subject of this investigation has not been disclosed, it has already attracted heavy wagering on prediction market Polymarket. The betting has also raised fairness concerns over whether some participants possess nonpublic information.

ZachXBT is expected to release a major insider-trading investigation on February 26. Nearly $3 million has been wagered on Polymarket contracts speculating about which organization will be exposed, with Solana ecosystem project Meteora currently carrying the highest odds. Recent reporting also said suspected insider wallets had wagered that Axiom would be the subject of the investigation, building positions worth $1.2 million.

Polymarket allows users to wager crypto assets on event outcomes. Although its onchain transactions are publicly visible, the offshore platform does not require identity verification. After onchain investigator ZachXBT said he would expose insider trading at a crypto company, a market opened for users to guess the company’s identity. Ironically, advance information may itself have leaked in the market betting on an insider-trading investigation.

On Feb. 26, 2026, ZachXBT identified Axiom as the subject of the investigation, alleging that its employees may have misused internal tools to track users’ wallets. The prediction market had recorded about $40 million in trading volume since Feb. 23. Lookonchain found that at least 12 newly created wallets had bet on Axiom in advance, earning more than $1 million in total, including $411,000 for one wallet. Axiom has revoked the relevant access and is investigating a possible leak.

Axiom is an on-chain crypto trading platform whose employees may have access to users' wallet and transaction data. ZachXBT alleged that employee Broox Bauer abused internal tools to track the private wallets of key opinion leaders, or KOLs, in an attempt to trade ahead of them for profit. The case highlights risks involving platform access controls and user privacy. The investigation did not disclose the amount of any realized profit.

As of July 19, 2026, ZachXBT had published his findings, alleging that Broox Bauer exploited an information advantage to engage in suspected insider trading. After the allegations surfaced, Axiom revoked his access to the relevant tools and launched an in-depth investigation. It has not disclosed the value of the transactions involved, the number of affected users, whether Bauer has been suspended or dismissed, or when the investigation will be completed.

Axiom Exchange is a cryptocurrency trading platform whose employees can access sensitive data, including users’ transactions and wallet information. Blockchain investigator ZachXBT alleged that senior employee Broox Bauer abused internal privileges to track users’ private wallets and trade memecoins. If substantiated, the conduct would undermine the platform’s data governance and market fairness.

The Protocol recently reported the allegations, but the available material did not specify the publication date, tokens involved, transaction amounts or profits. It also did not include responses from Axiom or Bauer. The same weekly edition covered the Ethereum Foundation’s new roadmap and EVMbench, OpenAI’s benchmark for testing AI systems’ ability to maintain smart-contract security.

Axiom is a Solana-focused onchain trading platform founded in 2024 and a member of Y Combinator’s Winter 2025 batch. It has generated more than $390 million in cumulative revenue. Employees’ ability to use customer-support tools to link users’ undisclosed wallets to their trading identities could create an informational advantage in memecoin trading. It also highlights risks involving the platform’s internal controls and user privacy.

On February 26, 2026, ZachXBT released recordings and screenshots accusing Broox Bauer, a senior business development employee at Axiom in New York, of tracking 10 to 20 wallets. Bauer allegedly said he could use internal data to help a friend make $200,000. The data screenshots date to April and August 2025. Axiom has revoked the employee’s access to its tools and said it would continue investigating and pursue legal accountability.

Axiom Exchange is a non-custodial onchain trading platform founded in 2024 and selected for Y Combinator's Winter 2025 batch. According to ZachXBT, it has generated more than $390 million in cumulative revenue. The case raises questions about whether the platform adequately restricted employee access to users' wallet data, with implications for trading fairness and privacy.

ZachXBT alleged on February 26, 2026, that Broox Bauer, a senior business development employee at Axiom, had used internal tools to track private wallets since early 2025, initially targeting about 10 to 20 addresses. The evidence cited included backend screenshots from April and August 2025. Axiom has revoked access to the tools and launched an investigation. The allegations have not been independently verified.

Axiom Exchange is a decentralized trading platform with $390 million in cumulative revenue. Onchain investigator ZachXBT accused employees of using their internal access over an extended period to obtain sensitive user data for insider trading and front-running. The allegations underscore the internal-control and data-security risks facing DeFi platforms despite their use of onchain mechanisms.

As of July 20, 2026, ZachXBT's latest report had focused scrutiny on Axiom Exchange employees, alleging that they misused user data for profit and plunged the platform into a crisis of confidence. Available information did not specify the report's publication date, the amount involved or the outcome of any Axiom investigation. The allegations await a response from the platform and further verification.