# Polymarket copy-trading, done properly

**The theory of copying a Polymarket whale is easy. The practice is where most guides fall apart. Here is how the Polyterminus copy-trading engine actually works.**

Category: Strategy · Reading time: 6 min · Published: 2026-07-28
Tags: copy-trading, whales, polymarket, leaderboard

---

"Copy the whales" is one of those pieces of advice that sounds smart and turns out to be almost impossible without the right tooling. Here's the honest version.

## The five hard problems

  - **Which wallet is actually a whale?** Big portfolio value doesn't mean skilled — it might mean "held one 60¢ bet that resolved YES." You need P&L, not portfolio value.
  - **What is the wallet's style?** Someone with 40 trades a day is a scalper — copying their tape gets you 40 trades a day too. Someone with 3 holdings and 0 recent trades is a conviction holder — you copy one trade a month.
  - **What are they good at?** A politics specialist has no edge on sports. You want to filter by vertical.
  - **When do they enter?** Reading a wallet's positions AFTER the market moved is worthless. You need low-latency signal on the ENTRY.
  - **How much should you copy?** Copying a $10M wallet's $50k position with your $500 balance breaks portfolio construction badly. You need proportional sizing.

## What Polyterminus does

### Leaderboard (top 120)

We fetch the top 35 markets by 24h volume from Polymarket, pull the top 15 holders of each, then enrich every wallet with: rolling 30-trade P&L, position count, portfolio value, dominant vertical, trader-type label (scalper / swing / holder / diversifier / specialist), and the 5 most recent trades. Cached for an hour so we're not hammering the data-api.

### Filters that work

Vertical filters match on any exposure ≥ 20% (not just dominant ≥ 50%) — so a 30% crypto / 30% politics / 40% sports whale correctly appears under the Crypto chip. Combined with trader-type, activity, and sort options, you can quickly narrow 120 whales down to "the 8 crypto scalpers with recent trades > $5k."

### Follow modes

  - _Read-only_: notifications when the whale opens a position. You decide whether to mirror.
  - _Autopilot (Pro)_: proportional mirror based on your % allocation. Per-whale allowlist so you can follow "only crypto trades from wallet X".

### Sanity ceilings

Even in autopilot, hard caps on: per-trade $ (defaults to your daily-loss-limit / 5), per-whale monthly spend, minimum ticket size (skips their sub-$10 dust trades).

## What we don't promise

Copying whales won't beat holding index-like exposure to Polymarket volume. The best whales beat the average by picking their spots — copying them mechanically means also copying their bad picks. Use the leaderboard as an _idea generator_, not an autopilot for retirement.

## Try it

Copy Trading tab is in every plan, free included. Autopilot lands with the Pro plan. Open the app at [app.polyterminus.com](https://app.polyterminus.com).