{"changes":[{"companyHref":"/c/bun-sh","date":"2026-09-24","documentUrl":"https://www.ycombinator.com/companies/bun","domain":"bun.sh","fact":"provenance:existence","name":"Bun","new":{"publisher":"Y Combinator","status":"sourced","url":"https://www.ycombinator.com/companies/bun"},"old":{"publisher":"bun.sh","status":"self-reported","url":"https://bun.sh"},"publisher":"Y Combinator","reason":null,"retrievedAt":"2026-09-17","slug":"bun-sh","status":"sourced","url":"https://whoraisedwhat.com/c/bun-sh"}],"country":"US","description":"Bun is a JavaScript and TypeScript runtime plus toolkit that bundles a fast runtime with a package manager, test runner, and bundler, with native TypeScript and JSX execution. It targets developers building backend services, full-stack apps, CLIs, and tooling who want shorter builds and faster startup. The package manager runs roughly 30x faster than npm and the runtime starts about 3x faster than Node.js with built-in PostgreSQL, Redis, S3, and WebSocket APIs.","domain":"bun.sh","employees":null,"founded":2018,"fundingTotalQuarantined":false,"githubOrg":"oven-sh","githubStars":null,"industry":"b2b","investors":["yc"],"lat":37.787936,"lng":-122.40752,"location":"San Francisco","name":"Bun","rounds":[{"amountQuarantined":false,"amountUsd":5000000,"currency":"USD","date":"2024-09-15","investors":["yc"],"leadInvestor":"yc","source":{"fact":"round","publisher":"yc","retrievedAt":"2026-05-07","status":"attributed","url":null},"status":"attributed","type":"series-a","url":null}],"slug":"bun-sh","sources":[{"fact":"round","publisher":"yc","retrievedAt":"2026-05-07","status":"attributed","url":null},{"fact":"existence","publisher":"Y Combinator","retrievedAt":"2026-09-17","status":"sourced","url":"https://www.ycombinator.com/companies/bun"},{"fact":"description","publisher":"bun.sh","retrievedAt":"2026-05-07","status":"self-reported","url":"https://bun.sh"}],"stage":"series-a","techStack":["Cloudflare","Vercel","Algolia","Google Analytics","Google Tag Manager","jsDelivr","DoubleClick Floodlight","WordPress","PHP","MySQL","React"],"totalRaisedUsd":5000000,"updatedAt":"2026-05-07"}