Axiom

Axiom is a Polymarket builder categorized as a trading terminal, routing order flow into the exchange under its own builder code and ranked #44 by all-time attributed volume. It has been live since 2026-05-28, putting 110 behind it as of the data through 2026-09-14. Over the trailing week it moved $115K across 1.4K fills, with 29 wallets active on an average day and 515 wallets counted in the thirty-day cohort.

Its heaviest exposure over the last thirty days sits in up-or-down, led by Will Pablo Marçal win the 2026 Brazilian presidential election, and an average fill size of $205 points to a retail-scale user base rather than desks moving four-figure clips. A buy share of 73% shows the flow leans toward opening positions more than closing them, and the week-over-week move of -54.4% is the number to watch for whether that activity is building or fading.

A builder code is what Axiom attaches to the orders it routes into Polymarket, and Polymarket's own central limit order book does the matching and settlement from there. That code is the mechanism our index uses to attribute $115K over the trailing week and $13.2M since 2026-05-28 specifically to Axiom rather than to the exchange in general.

The wallets that place those orders keep their own positions and their own profit and loss. 515 wallets made up the thirty-day cohort routing through Axiom, and what any of them gained or lost belongs to that wallet's broader Polymarket activity, not to the terminal that routed the order. Fill count is a better read on how busy the venue is day to day: 1.4K fills landed over the last seven days against 64.5K since launch, and 29 wallets traded through it on an average day last week.

Most of that flow opens rather than closes: a buy share of 73% means Axiom is used more to enter positions than to exit them, which is worth knowing before treating its volume as a read on sentiment in either direction.

• Up or down market focus

  Thirty-day flow concentrates in up-or-down markets, so traders working outside that format will find less of a track record here to lean on.

• Single election market weight

  The single largest thirty-day market is Will Pablo Marçal win the 2026 Brazilian presidential election, meaning a meaningful slice of routed volume tracks one contest rather than a broad market spread.

• Retail scale fill sizing

  Average fill size of $205 fits traders sizing individual positions rather than desks splitting size across many fills.

Retail traders sizing single positions

Average fill size of $205 suits placing one or two positions at a time rather than splitting large orders across many fills.

Traders following up-or-down markets

With up-or-down as the largest thirty-day category, traders already active in that market type will find the deepest history here.

Traders opening new positions

A buy share of 73% shows the flow skews toward entries, fitting traders who use the terminal to build positions rather than unwind them.

Traders tracking one election market

Will Pablo Marçal win the 2026 Brazilian presidential election accounted for the largest share of thirty-day volume, so anyone following that contest specifically has activity to watch here.

Traders wary of thin history

At 110 since the first attributed fill, Axiom has not yet run through a full market cycle, something cautious traders should weigh.

Axiom does not publish a fee schedule; the operator states no rate for what it charges to route an order through its code. Polymarket's own trading fee is set per market and applies the same no matter which builder routes the order, so it says nothing about Axiom specifically and gives no basis for comparing this terminal against another. Before routing size through it, a trader should confirm directly with Axiom what, if anything, it charges beyond that market fee, since nothing in the public record settles the question.

• Its track record spans 110, long enough to show more than a launch-week spike.
• Weekly fill volume of 1.4K across 29 wallets a day points to a real crowd rather than one or two accounts driving the numbers.
• All-time attributed volume of $13.2M across 64.5K fills gives a large enough sample to judge the terminal's behavior, not just a few days of data.
• A buy share of 73% shows real position-opening demand moving through it, not merely traders passing through on their way out.
• Average fill size of $205 keeps it accessible to traders sizing ordinary positions rather than requiring desk-scale size to matter.

• Axiom publishes no fee schedule, leaving traders to find out what routing through it costs only after committing money.
• Recent momentum is a moving target: -54.4% against the prior week means the current trend can flip before this page updates again.
• Its 110 track record does not yet span a full market cycle, so how it holds up under stress is untested.
• Thirty-day flow concentrates heavily in up-or-down and specifically in Will Pablo Marçal win the 2026 Brazilian presidential election, so its numbers may not represent activity outside that niche.
• Mean traders per day of 29 against a thirty-day cohort of 515 wallets means most cohort members are not daily users.

Axiom does not state whether it takes custody of trader funds or leaves positions sitting in the trader's own wallet while an order is open, a detail worth confirming with the operator before committing size. What is measurable is attribution, not control: $13.2M and 64.5K show how much has moved through its builder code, not who holds anything while a trade is live. Any profit or loss recorded by the 515 wallets in its thirty-day cohort belongs to those wallets' own broader Polymarket activity rather than to Axiom, so trading outcomes and the terminal's own operational risk are separate questions.

Axiom's case rests on volume and history rather than any published pricing: 110 of attributed fills and 64.5K fills all-time give a trader something to judge before routing money through it, even though the operator states no fee rate anywhere. The flow skews toward opening positions, concentrates in up-or-down, and leans on an average fill of $205, a profile that fits a retail trader entering positions in that niche more than a desk needing broad market coverage. Anyone who needs a stated fee before committing size, or who trades outside up-or-down, should look elsewhere first and confirm costs with Axiom directly before routing volume through it.

• Is Axiom safe to route Polymarket orders through?

  Axiom does not state whether it holds trader funds or custody while an order is open, so confirm that directly with the operator. What the record shows is attributed volume and fill activity, not custody terms.

• What does Axiom charge to trade on Polymarket?

  Axiom publishes no fee schedule of its own, and Polymarket's per-market trading fee applies the same regardless of which builder routes the order, so ask Axiom directly what, if anything, it adds on top.

• How does Axiom rank among Polymarket builders?

  Our index places Axiom at #44 by all-time attributed volume, with $115K moved over the trailing week and 29 distinct wallets trading through it on an average day.

• What kind of trader uses Axiom?

  Average fill size of $205 and a buy share of 73% point to individual traders opening positions in up-or-down markets, rather than desks splitting size across many separate fills.

• How long has Axiom been active on Polymarket?

  Axiom's first attributed fill landed on 2026-05-28, putting 110 behind it as of data through 2026-09-14, not yet long enough to have run through a full market cycle.

• What are alternatives to Axiom for trading Polymarket?

  Predicts.guru ranks Polymarket builders by attributed volume and trader activity, so compare Axiom's $13.2M and its undisclosed fee against other ranked terminals before deciding where to route an order.

• Is Axiom's Polymarket volume trending up or down?

  The week-over-week change sits at -54.4% against the prior seven days, a number that shifts often enough that last week's direction should not be assumed to still apply.