On Nimb, the largest public holders of each Polymarket market appear as grey discs on the map, joined to the markets they hold by green lines (Yes) and red lines (No). Open a market to see its top holders in a table, with side, position value and unrealised P&L. Large holders, often called "whales", show where big money sits, not who is right.
Holders are the third part of market reading, after price and flow: they tell you who is positioned and how concentrated the market is. This page explains how to read them, what Nimb leaves out and why, and what the data says about following large wallets. It covers the searches people make for "Polymarket whales", "Polymarket top holders" and "smart money on Polymarket".
What do the lines on the map show?
A holder is a wallet that owns shares of an outcome in a market. Each grey disc on the map is one public wallet that ranks among the top holders of at least one market on screen. Each line runs from a wallet to a market it holds:
| Mark | Means |
|---|---|
| Grey disc | A public wallet; bigger means more value held in markets on the map |
| Green line | The wallet holds Yes in that market |
| Red line | The wallet holds No in that market |
| Line width | The value of that position |
Lines are faint until you focus. Hover over or select a market and its holders' lines come forward; hover over or select a wallet and you see every market it holds on the map. Wallets sit near the categories they hold, so a cluster of discs between Politics and Geopolitics is wallets that hold both.
Not every holder gets a line. Nimb nets out wallets that hold both sides of a market, drops net positions worth less than $500, keeps likely market makers off the map, and draws the largest remaining wallets: up to 60 plus 0.6 per market on screen, about 126 when 110 markets are shown.
Who are the biggest holders of a Polymarket market?
Open any market and look at "Who is positioned" in the market panel. It shows:
- A bar splitting the top holders' value between Yes (green) and No (red), with the count and dollar total on each side, for example "9 hold Yes · $412k" and "6 hold No · $188k".
- One sentence on concentration: "The largest holder has 22% of the value held by these top holders. Positions that hold both sides are netted."
- A table of up to 8 wallets, largest first.
Every market page under /markets carries the same table in plain HTML, titled "Largest public holders".
Nimb's tables are per market. Polymarket also publishes its own leaderboard on polymarket.com, which ranks traders across all markets; it answers a different question (who has done well overall), not who is positioned in the market you are reading.
How do I read a holder table?
| Column | What it shows |
|---|---|
| Wallet | The wallet's Polymarket display name if it set one, otherwise a shortened address such as 0x3f2a…9c1e; "mm" if it looks like a market maker |
| Holds | Yes or No, and the outcome in a multi-outcome market |
| Value | Shares held times the current price of that side |
| Unrealised P&L | Value now minus what the shares cost, on the net position |
Unrealised P&L is the gain or loss on shares still held, at today's price. Click a wallet to open its own panel: every position it holds on the map, with entry → mark (the average price paid, then the current price, for example "38% → 52%") and unrealised P&L. Realised P&L, the gain or loss already locked in by selling or by resolution, is shown for your own positions in Portfolio.
A worked example. A wallet holds 50,000 No shares in a market where Yes trades at 76%, so No is worth 24% (that is, $0.24 a share). Value: 50,000 × $0.24 = $12,000. It bought at an average No price of 31%, paying $15,500. Unrealised P&L: $12,000 − $15,500 = −$3,500. The table reads "No · $12k · −$3.5k".
Nimb computes P&L on the net position itself rather than taking the API figure, because the API's figure can include a hedged leg. Holder data comes from Polymarket's public data API (see docs.polymarket.com); Nimb fetches up to 25 holders per side for each outcome on the map.
How concentrated is a market?
Concentration matters because a market where one wallet holds most of the value can move sharply when that wallet sells. Nimb shows it in two places: the sentence on the largest holder's share in "Who is positioned", and a highlighted check in "Before you trade" when one wallet holds more than 35% of the top holders' value: "A single big seller could move this market." See before you trade checks.
Read the share carefully: it is a share of the value held by the top holders Nimb fetched, not of all money in the market. A market with thousands of small holders can look concentrated among its top 25. A fuller measure would count 200–500 holders and compare them with open interest; Nimb does not compute one.
Should I follow a whale?
A whale is a wallet with a very large position in a market. Seeing one on the map tells you money is committed, not that it is informed. Large holders can be wrong, can be hedged elsewhere (on another market, another venue or off-chain), can be market makers carrying inventory, or can be closing a position you cannot see yet. A wallet that is up on a position may simply have bought early.
Following a holder also means buying after them, at a worse price, often into a book their own order has thinned. If a large holder's position is part of your reading, check the flow and the order book depth too, and size small. Read the risks of prediction markets first.
Is "smart money" on Polymarket real?
"Smart money" is a search term, not a measured fact. It usually means wallets assumed to be better informed. Nimb tested the simplest version of the idea: do wallets in profit lean the way the price later moves?
On the snapshot reviewed, the side held by profitable wallets matched the 30-day price direction in 63% of events. That sounds like signal, but it is circular: a wallet is in profit because the price already moved its way. The test measures the past move, not skill, and is not predictive.
A fair test needs resolved markets and history: a shrunk return on investment or a Brier score per wallet over many resolved markets, and a wallet's lean measured against the price move since its entry. Nimb has no such score, and shows no "smart money" label. A holder can be one input to alpha, an informational edge; most apparent edge from copying large wallets is noise, or is gone once fees and spreads are counted.
Why are some wallets hidden from the map?
Three kinds of wallet are left off the map, and two of them stay in the tables:
| Wallet | On the map | In holder tables | Why |
|---|---|---|---|
| Holds both Yes and No in the same market | Only the net side | Only the net side | A Yes-plus-No set pays $1 whatever happens: it is not a bet |
| Likely market maker | No | Yes, tagged "mm" | Its positions are inventory, not views |
| Net position under $500 | No | No | Too small to read |
Wallets spread over many markets behave like market makers: they quote both sides to earn the spread and end up holding whatever traders sold them. Nimb flags a wallet as "mm" when it holds positions in 12 or more of the markets on the map, keeps it off the map, and still lists it in tables. Nimb's own tests found that an earlier filter of this kind hid 46% of top-holder value, so the rule matters and is imperfect.
Hedged wallets are explained on net exposure and hedged positions.
Are these wallets anonymous?
They are pseudonymous. Polymarket positions are held by wallet addresses on the Polygon blockchain, and anyone can read them. Nimb shows public addresses and the display names users chose on Polymarket, nothing else. It does not try to identify the people behind wallets, does not combine addresses with other data, and does not show a wallet that is not among a market's public top holders. A pseudonymous address can still be linked to a person by other means, so if you trade, assume your positions are visible to everyone, including on Nimb.
What can holders not tell you?
- Why a wallet holds a position, or what it knows.
- Positions held elsewhere: other markets, other venues, other wallets of the same trader.
- Small holders: Nimb shows the top of the list, not everyone.
- The future: P&L is measured at today's price and changes with it.
Read holders alongside money flow and the general method in how to read a market. The map's other marks are on how to read the Nimb map.
From reading to execution
If holders are part of your reading, combine them with price, flow and the "Before you trade" checks, then use the order ticket. Trading is not available in every country; see eligibility and restricted countries.
Last reviewed 2026-11-07 · Data from Polymarket · Not financial advice · Nimb is not affiliated with Polymarket.