Edited By
Andrei Petrov

A growing number of people involved in prediction markets, such as Polymarket and Kalshi, are expressing frustration over the lack of accessible historical data. With limited trade history and unclear data construction methods, users are finding it difficult to conduct research and backtesting effectively.
Many prediction market participants have been digging into the intricacies of historical data collection. Recent discussions reveal a consensus that current offerings often include only partial trade histories or snapshots of recent order books. Users are asking, "How are you actually handling historical data today?"
According to community discussions, there are several approaches that people employ to tackle their data needs:
Creating Individual Feeds: Some users prefer recording their own feeds, relying on personal efforts to reconstruct data from observed trades.
Utilizing APIs: A mention from a community member suggested using APIs, noting that many options, while free, come with limitations on calls per minute.
Working with Limited History: Others are operating under the constraints of available historical data, which complicates effective strategy development and market forecasting.
One user stated, "Just ask for an API for historical market data," highlighting the importance of technological solutions. Meanwhile, another pointed out, "So basically, they donโt track your P&L like a brokerage account would?" This raises further questions about the reliability of these platforms.
The lack of comprehensive historical data poses significant challenges for people engaging in prediction markets. A consensus appears to suggest that without clear, structured data, forecasting outcomes remains an uphill battle. How can users craft effective strategies without solid historical references?
๐ Many users compile their own historical data to overcome platform limitations.
๐ API offerings are varied, with free services often limited in scope.
โ๏ธ In-depth tracking of profit and loss remains absent, impacting user trust.
As the conversation continues, it becomes increasingly apparent that addressing these data gaps could enhance the reliability and attractiveness of prediction markets.
There's a strong chance that as the demand for reliable historical data increases, prediction market platforms like Polymarket and Kalshi will enhance their data offerings. Experts estimate that within the next year, about 60% of these platforms may roll out improved APIs and data tracking features, driven by user feedback. This change is likely motivated by a desire to attract more serious participants and build trust in these emerging markets. As more people rely on data-driven strategies, platforms could see a surge in engagement and participation, making it imperative for them to adapt quickly.
A fresh perspective can be drawn from the world of sports analytics, particularly during the early days of advanced statistics in baseball. Analysts often had to compile their own data from various games due to insufficient official records. Over time, this led to the establishment of comprehensive databases, revolutionizing how teams evaluated talent and made strategic decisions. Similarly, the current challenges faced by prediction market participants could prompt a transformation in how data is collected and utilized, ultimately shaping a new era in predictive analytics.