Scraping
One of my hobbies is collecting data. I gather it on a Raspberry-Pi that I maintain running at home. Since there's tons of data (on the order of terabytes), it's all stored locally on hard-disks. If you want access, reach out to me and I'll see what I can do!
Apple App Store Top Charts
I scrape the top app1
Prediction Market Orderbooks
Prediction markets are derivatives exchanges where participants trade contracts tied to real-world events. The prices of these contracts correspond the probability of an event occurring. While platforms like Kalshi and Polymarket share historical aggregated execution data, they don't provide historical orderbook data. I address this gap by collecting real-time orderbook data for all active markets on both platforms.