Module 1: Prediction Markets 101 · 20 min

Polymarket Fundamentals: Markets, Shares, and Resolution

// sabak

Turn this lesson into one checked practice output

By the end, you should be able to explain the core idea behind “Polymarket Fundamentals: Markets, Shares, and Resolution” in your own words, apply it to one small real or sample task, and identify what still needs human review.

  1. 1

    Learn

    Read the 20-minute lesson without copying an output blindly.

  2. 2

    Try

    Use a small, non-sensitive example that you can inspect line by line.

  3. 3

    Review

    Check facts, fit, and risk; save one improvement note for next time.

Understand Polymarket by separating an event, a market, outcome tokens, order-book trading, and resolution. This is a read-only conceptual lesson. Platform architecture, terms, availability, fees, and restrictions can change; verify official documentation on the access date.

Markets and Events

In current Polymarket documentation, a market is a binary question with Yes/No outcomes, while an event can group one or more related markets. Identifiers such as slugs, condition IDs, question IDs, and token IDs serve different technical purposes. Do not join datasets by a display title alone.

The current CLOB documentation describes off-chain order matching and on-chain settlement. That architecture does not remove market, smart-contract, wallet, custody, bridge, stablecoin, operational, legal, or user-error risk. This course does not instruct wallet or order setup.

Resolution Is Part of the Product

Before interpreting a market, save:

  • exact question and description;
  • resolution source and rules;
  • end/close date and timezone;
  • conditions for Yes, No, invalid/other outcomes where applicable;
  • dispute/process information;
  • current active/closed/resolved state;
  • retrieval timestamp and source URL.

Words such as “official,” “announced,” “takes office,” “reaches,” or “by” can control settlement. A forecast about the real-world event can differ from a forecast about how a contract will resolve.

Shares and Prices

Outcome tokens represent conditional claims under the platform’s mechanism. Displayed prices can be read as market-implied probabilities only with caveats. A user who paid a price does not automatically realize the simple difference from a unit payout: fees, spread, slippage, timing, invalidation, and other costs/risks may apply.

For analysis, avoid calculating hypothetical returns unless the contract, fee, and execution assumptions are explicit. Prefer calibration and market-structure questions over “how much could I make?”

Use Read-Only Data

Public methods can provide markets, order books, prices, and spreads without authenticated trading credentials. Read-only access is still subject to platform terms and rate limits. Cache responsibly, identify your client where required, and never evade geographic restrictions or access controls.

Pin fields because APIs evolve. Store raw response, retrieval time, endpoint/version information, and a normalized table. Treat status transitions and resolution changes as events rather than overwriting history.

Worked Example

An event page groups four candidate markets. A researcher mistakenly treats each Yes price as exclusive probabilities summing to one. The contract structure may not support that shortcut. The corrected note reads each market/rules, observes individual order books, and labels any sum only as an exploratory diagnostic.

Failure Cases

  • Treating an event container as one binary market.
  • Joining by title instead of stable identifiers.
  • Ignoring resolution source and contract wording.
  • Presenting gross payout arithmetic as guaranteed return.
  • Assuming on-chain settlement eliminates operational/legal risk.
  • Using authenticated order endpoints in a research lesson.
  • Circumventing availability or rate limits.

🇵🇰 Pakistan Angle

Polymarket’s current geographic page should be checked, but absence from a restricted list is not legal advice or a regulator approval. Pakistan’s PVARA framework and SECP warnings should be checked on the research date. Do not fund, promote, intermediate, or advise on a virtual-asset service without qualified compliance review.

Learners can complete the full lesson using public documentation and a spreadsheet. No real funds, identity documents, wallet, VPN, or geoblock check is required.

Hands-On Exercise

Choose one event and map event ID/slug, child markets, questions, token/outcome labels, dates, resolution rules/source, status, and read-only price fields. Save a sanitized raw response or screenshot and a normalized table. Do not authenticate or place an order.

Completion Rubric

  • Complete: event/market/token/resolution concepts and stable identifiers are correctly mapped with timestamps.
  • Needs revision: the market is understood but structure, status, or resolution details are incomplete.
  • Not complete: real trading credentials, circumvention, or guaranteed-return language appears.

Sources

Key takeaway: Analyze a market only after mapping its identifiers, order-book metric, status, and exact resolution mechanism.

Self-check

Before you mark Lesson 1.2 complete

  • Can I explain “Polymarket Fundamentals: Markets, Shares, and Resolution” without reading the lesson back word for word?
  • Did I complete the lesson’s practice step on a real or clearly labelled sample task?
  • Did I check the result for invented facts, private data, unsafe actions, and mismatch with the brief?