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Is Vest Exchange A-Book? Questions Over Vest Markets Grow

Vest Markets says it never trades against its funded traders. But its own terms, order book data and payout math are raising doubts. Here’s what traders, rival firms and reviewers are asking about Vest’s A-book claim.

October 27, 20263 min read

Is Vest Exchange Really A-Book? Questions Mount Over Its Funded Accounts

Vest Markets has become one of the most talked-about prop firms of 2026, built on one big promise: it does not trade against its funded traders. Now a growing number of traders, rival firm owners and reviewers are asking whether Vest's own documents back that claim up. Over the past few weeks, the debate has moved from scattered replies on X to a full-blown investigation on YouTube, detailed blog breakdowns and pointed questions to Vest's founder. Here is what is being said, what Vest has said in response, and what it means if you trade with the firm.

What Vest claims

Vest is unusual in the prop space because it is an exchange first and a prop firm second. Vest Markets runs perpetual futures on Nasdaq, S&P, stocks, crypto, commodities and forex, and its Vest Capital program funds traders who pass an evaluation or buy an instant account. The company's pitch is that it is a fully A-book firm. In an A-book model, a trader's orders go to a real market and someone outside the firm takes the other side. In a B-book model, trades stay inside the firm (often on a simulated account), so the firm pays winners from its own pocket and keeps the fees of losers. Founder and CEO Justin Ma has repeated the A-book message often on X, telling traders that unlike other prop firms, Vest does "not lose money when our traders win." He has also argued that firms which B-book their traders are the reason payouts get denied across the industry. The message has worked. Vest announced a $13 million seed round on October 7, 2026, led by Portal Ventures, with individual backing from senior executives at Citadel Securities, BlackRock and KKR. The company says about 26% of its 27,000 traders had received a cash payout by late September, and that daily revenue grew from $25,000 to more than $1 million over two weeks in September.

The questions being raised

1. Vest's own terms say funded accounts are simulated

The strongest criticism comes from Vest's own paperwork. Vest Capital's product docs describe live accounts as real Vest capital. But according to a breakdown by prop firm SEO consultant Alex Firdaus, Vest's Prop Terms of Service (updated October 14, 2026) say every account, instant funded accounts included, is simulated, and that users do not place live trades. The same terms reportedly say payouts come from Vest's general corporate funds, which program fees can help cover, and that Vest does "not represent that payouts are funded by profitable live trading." They also allow Vest to hedge trades on outside venues or on Vest Exchange, its affiliated venue, and state that traders cannot rely on marketing, social media or Discord statements. The disclaimer at the bottom of Vest's homepage also says the program uses virtual accounts and that displayed balances and results are virtual. Patrick Wieland's review site, OnlyPropFirms, notes the same point in its Vest coverage: the legal disclosures describe funded program balances and performance as virtual. A popular YouTube investigation into Vest also flagged a clause in the exchange's terms that allows Vest and its affiliates to act as a liquidity provider, market maker or principal, and to take the opposite side of user trades. Vest's own funding announcement adds to the confusion. The press release distributed through The Block says traders pay a one-time fee to trade in a simulated environment, while also saying Vest is not exposed to its traders' wins or losses.

2. Who is on the other side of the trade?

If Vest hedges a funded trade on its own exchange and an affiliate takes the other side, critics argue the group as a whole ends up in the same position as a B-book: the trader's win is the group's loss. Firdaus recorded Vest's public NQ order book on October 22. During the US cash session, he found that most of the top 10 levels on each side held the same block of roughly $100,950, and that the best bid and best ask were the same size about 96% of the time. His reading is that the book looks like a single quoting algorithm on both sides. He is clear that the data cannot show who runs that algorithm. The Tradeify co-founder raised a related point on X: if funded accounts on both sides of a trade are firm capital, trading profit and loss nets to zero, so where does the money for payouts come from?

3. The payout math

Several analysts have run the numbers on Vest's own pricing. Using the published fee and drawdown for a $25,000 Platinum account, Firdaus calculates that the fee only covers an average, no-edge trader if roughly 31% or fewer buyers pass. Trader ESY reached the same 31% figure in a thread on X. The takeaway from both: like most prop firms, Vest's payouts to the average trader appear to depend on evaluation fees, whether the firm A-books or not. The YouTube investigation made a similar argument from Vest's public volume data. It estimated that, at one point on October 5, the volume labelled "live" on NASDAQ was a tiny fraction of the total, which would produce exchange fees far below the payouts being shared on social media. The creator also noted that a wallet Vest support pointed to held roughly $400,000, while open interest on NASDAQ was around $56 million at the time. These are the creator's estimates, and Vest has not publicly addressed them.

4. Affiliates, leaderboards and silence

The same video raised concerns about promotion around Vest. It pointed out that Vest offers affiliates 5% commission, with a VIP tier of up to 20%, and that most of the top names on a third-party Vest payout leaderboard appeared to be Vest affiliates or influencers. The creator said the leaderboard site was only about a month old and was referenced by Vest support before its creator had actively begun posting about it. The creator stressed he was not accusing anyone, but said the overlap stood out. The creator also said he emailed Vest seven questions on October 13, followed up through support, Discord, a DM to the founder and a reply to a lead investor, and received no substantive answer. He said one support reply stated they did not have the information to share, and that his Discord message was deleted within minutes. Others have reported the same pattern. Prop Journalist asked Ma on X how the A-booking actually works on September 30. Ma replied that the questions were valid and that Vest was drafting a proper answer, but that full explanation has not been published. A Vest Discord admin later said the team had been extremely busy and wanted to write something accurate, since competitors were waiting to seize on mistakes in its wording.

What Vest has said

Vest has not published a full technical explanation of its A-book model. In public replies, Ma has said that live and funded trades on Vest always hit a real central limit order book, where prices are set by active market participants. He has argued that B-book firms run traders on simulated environments, and said Vest aims to prove its model through data such as higher pass rates and larger payouts. Support has also told the YouTube creator that Vest's 24-hour volume figure is live market volume, with evaluation trading shown separately, and that the firm has worked this way since the prop program launched in late 2025.

Does Vest actually pay?

On this point, most reviewers agree: traders do report getting paid. Several independent reviewers, including SniperFlow and Damn Prop Firms, say they have received payouts from Vest themselves, and payout certificates are widely shared on X. But reviewers also flag real risks. The prop terms are governed by Panama law with arbitration in Panama, liability is capped, and no financial regulator oversees the program. Vest Exchange also had three pricing incidents in 2026 (April 15, June 8 and June 30), involving wrong liquidations or mispricing, which were rolled back or compensated.

What this means for traders

The debate is less about whether Vest pays and more about whether its central marketing claim is accurate. If Vest's funded accounts are simulated under its own contract, the "we don't make money when you lose" message cannot be the full picture, and the A-book label stops being a reason to choose it over other firms. If you are considering Vest, or any firm making A-book claims: • Read the terms, not the tweets. Search the prop terms for "simulated", "virtual" and "compensation". The contract is what governs your account. • Check where payouts come from. Fees funding payouts is normal in this industry. What matters is whether a firm is upfront about it. • Ask who the counterparty is. A hedge on a firm's own exchange is not the same as an outside counterparty. • Judge by payout record and rules. A firm's cash, its rules and its payout history matter more than the booking label. • Start small and withdraw as you go. Especially with a young, offshore and unregulated firm.

Vest discount code

If you still want to try Vest after reading the terms, use code INSIDER at checkout for 5% off your Vest Capital evaluation or instant account. Disclosure: PropFirmsInsider may earn a commission when you use this code. It does not affect our coverage, and you should read Vest's Prop Terms of Service before you buy.

FAQ

Is Vest Exchange an A-book prop firm?

Vest says it is fully A-book. However, its Prop Terms of Service, as reported by independent reviewers, describe all accounts as simulated and allow Vest to hedge on its own affiliated exchange. Vest has not yet published a detailed explanation that reconciles the two. Are Vest funded accounts real capital? Vest's product docs describe live accounts as real Vest capital, while its terms and website disclaimer describe balances and results as virtual. The terms state that only the written agreement counts, not marketing or social media posts.

Does Vest Markets pay out?

Yes. Vest says 26% of its 27,000 traders had received a payout by late September 2026, and multiple reviewers report receiving payouts themselves. What is the difference between A-book and B-book? In an A-book model, your trades go to a real market and an outside party takes the other side. In a B-book model, trades stay with the firm, which pays winners from its own funds and keeps the fees of losing traders.

Is Vest Markets regulated?

No. The prop program is run under Panama law with arbitration in Panama, and no financial regulator oversees it.

Who founded Vest?

Vest Labs was co-founded by University of Pennsylvania dropouts Justin Ma, Rikuya Takatsu and Maximilian Tsiang. Ma is the CEO.