Custom Indices
Thematic, categorical, and return-based indices that group related event contracts together to benchmark broader political, economic, or cultural trends.
Adjacent News
Prediction Market Indices & Data
Adjacent News is a data and media platform that consolidates fragmented prediction market data into unified APIs and custom thematic indices.
Data & Analytics
PolymarketKalshiManifoldMetaculus
What is Adjacent News?
Indexing and benchmarking event contracts
Adjacent News (also known as Adjacent Indices) is a data and media platform focused entirely on the prediction market and event contract ecosystem. It solves the fragmentation problem by aggregating and normalizing data from major venues like Polymarket, Kalshi, Manifold, and Metaculus into a single, unified API. Beyond raw data, Adjacent builds custom thematic indices to track specific real-world trends and publishes contextual newsletters and opinion pieces based on shifting market probabilities.
Key Features
Data aggregation and analysis
Unified API
A normalized REST API providing access to historical price data, trade activity, volume, and liquidity across 40,000+ prediction markets.
Data Normalization
Standardizes the disparate data formats across decentralized (Polymarket) and regulated (Kalshi) venues for easy cross-platform comparison.
Contextual News
Daily newsletters and analytical content that interpret prediction market odds to provide "in-context" reporting on real-world events.
How It Works
Underlying data engine
1
Data Ingestion
Adjacent continuously scrapes and ingests real-time and historical data from top prediction markets and polling sites.
2
Normalization
The engine standardizes contract formats, timestamps, and pricing structures to make data comparable across venues.
3
Index Calculation
Thoughtfully weighted indices are calculated by aggregating probabilities of related events (e.g., aggregating all Senate race odds to predict overall control).
4
Distribution
Data is distributed via their Developer API, visual charting interfaces, and integrated into their daily media coverage.
Pricing & Access
Data and API access
Public Media
Free
- Access to daily newsletters
- View public indices
- Read opinion and context pieces
Developer API / Custom
Contact Sales
- Full REST API access
- Historical data downloads
- Custom index creation
- Enterprise SLA
Pros & Cons
Evaluating the data platform
Pros
- One of the only platforms offering true normalization across disparate Web2 and Web3 prediction markets.
- Indices provide a much better macro view of events than tracking individual, isolated contracts.
- Excellent resource for journalists who want to cite prediction odds without dealing with raw blockchain data.
Cons
- Primarily a data and media layer; you cannot execute trades directly on Adjacent.
- API access might be restricted or require contacting the team for heavy commercial use.
Primary Use Cases
Who uses Adjacent?
Quantitative Research
Researchers and quants using the historical API to backtest trading strategies across multiple prediction markets simultaneously.
Journalism & Media
Newsrooms embedding Adjacent Indices to show real-time, aggregated probabilities of political outcomes.
Arbitrage Identification
Developers building cross-venue arbitrage bots using the normalized API data.
Alternatives
Other data aggregators
ElectionBettingOdds
A simpler, classic aggregator focused specifically on political elections.
Visit WebsiteRealClearPolitics
Aggregates traditional polling data, serving as the traditional media equivalent to Adjacent's prediction market aggregation.
Visit WebsiteFrequently Asked Questions
Common questions
No, Adjacent is strictly a data, indexing, and media platform. You must execute trades on the underlying venues like Polymarket or Kalshi.
They track major platforms including Polymarket, Kalshi, Manifold, and Metaculus.
An index is a weighted aggregate of multiple related prediction contracts, designed to track a broader theme (like "Tech Policy Outlook") rather than a single specific event.
Conclusion
Final directory verdict
Adjacent News is a crucial infrastructure piece for the maturing prediction market ecosystem. By normalizing data across fragmented, siloed platforms and structuring it into easily digestible thematic indices and APIs, Adjacent bridges the gap between complex event contracts and mainstream media consumption.
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