TWITTER_POST

martkiro published a fully unfiltered, high-frequency dump of Polymarket…

2026-02-24 · 16:05 UTC ·martkiro ·1 min read

Brief

martkiro published a fully unfiltered, high-frequency dump of Polymarket order-book data (tweeted 2026-02-24). Snapshots are taken hourly, each containing ~30M rows and stored as Parquet files of ~500MB–1GB; the public release exceeds 2B rows. The collection was motivated by limitations in Dome's historical API and acquisition-driven continuity concerns.

Source evidence

title: @martkiro: I just published a data dump of full order book data from [@Polymarket](https://...
author: martkiro
contenttype: twitterpost
published: 2026-02-24T16:05:17+00:00
source_url: https://x.com/martkiro/status/2026327582627545548

word_count: 128

Tweet by @martkiro

I just published a data dump of full order book data from @Polymarket The data is maximally granular. There is no filtering whatsoever. Every order book change and trade is saved. Across all markets Updates are hourly. Each snapshot contains ~30M rows. Snapshots are downloaded as parquet files. Each file is approx. 500MB-1GB large. The data dump is already 2B+ rows large and growing fast. But this is just part 1/3. Coming soon is a much bigger dump that also includes @Kalshi / @opinionlabsxyz / @trylimitless etc I started collecting this data because I noticed I couldn't get it from Dome API. Their historical order book data was filtered limiting its usefulness. Also now with the acquisition there's a lot of uncertainty about whether they will continue operating

Posted: 2026-02-24T16:05:17.000Z
Engagement: 1254 likes, 125 retweets, 110 replies