# Biz Stone: angel investments and portfolio > Biz Stone is an angel based in United States. 9 investments on record, 1 in the last 12 months, latest Jun 2026. Portfolio, stages, co-investors and team. Source: https://millionrounds.com/fund/biz-stone (Millionrounds; every figure on the page links to its filing or article) United States · [Investor](https://millionrounds.com/investors) # Biz Stone Last cheque observed Jun 2026; 9 cheques on record. Email Angel Deploying now Series A Seed Follow Biz Stone and see its new cheques in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Ffund%2Fbiz-stone) Deploying now **100%** of best year **1** **cheques in 12 months**, 9 on record Since the last cheque **156** days **00** hrs **00** min **00** sec Median round **$15M** Rounds led **0 of 9** Sole investor **1 rounds** Mostly in **United States, 63%** Pitch Biz Stone ## Biz Stone highlights - 01 1 cheques in the last 12 months - 02 Mostly Series A and Seed: 100% of its rounds - 03 Sole investor in 1 rounds, median $3.0M ## What they do - **Type:** Angel (from a list, unverified) - **Cheque size:** Not stated - **Based in:** United States - **Cold pitches:** Not stated ## The record Every round we can evidence, newest first **9 appearances** - **2026** 1 round - **Jun** **[Board](https://millionrounds.com/company/board)** Series A · US · TechCrunch **$20M** With 6 others - **2025** 1 round - **Jun** **[Sociability](https://millionrounds.com/company/sociability)** Seed · AU · Startup Daily **$3.5M** With 5 others - **2018** 1 round - **Sept** **[AI Foundation](https://millionrounds.com/company/ai-foundation)** US · VentureBeat **$10M** With 2 others - **2016** 1 round - **Feb** **[Magic Leap](https://millionrounds.com/company/magic-leap)** **$794M** With 17 others - **2015** 2 rounds - **Oct** **[Lookup](https://millionrounds.com/company/lookup)** Series A · IN **$2.5M** With 4 others - **May** **[Lookup](https://millionrounds.com/company/lookup)** Series A · IN **$3.0M** Sole investor - **2012** 1 round - **Jan** **[Intercom](https://millionrounds.com/company/intercom)** Seed · US · techcrunch.com **$1.0M** With 16 others - **2011** 1 round - **Mar** **[Message Bus](https://millionrounds.com/company/message-bus)** Series A · US · techcrunch.com **$3.4M** With 10 others - **2009** 1 round - **Nov** **[Square](https://millionrounds.com/company/square)** Series A · US **$10M** With 18 others An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor. ## The team We hold **1** person at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them. ## The cheque Series A Seed Median round joined **$15M** the round, not its cheque Alone, median **$3.0M** Led 0 of 9 rounds **0%** - **Sole investor:** 1 rounds - **Last cheque:** Jun 2026 Rounds by stage said on their site - Series A *5* - Seed *2* Cheques by month Led Joined Dec 2023 Nov 2026 Often in the room with - [First Round Capital](https://millionrounds.com/fund/first-round-capital) 2 **Pitching Biz Stone?** Put them on your fundraising board with this record on the card, and follow them to hear when they write a new cheque. Add to your CRM *→* ## Who they invest alongside The investors most often in the same rounds as Biz Stone. A count of rooms they were both in, not a relationship either has claimed. [**First Round Capital** VC firm **2** rounds together](https://millionrounds.com/fund/first-round-capital) ## Recently backed The latest companies Biz Stone put money into. [**Board** $20M · Jun 2026](https://millionrounds.com/company/board)[**Sociability** $3.5M · Jun 2025](https://millionrounds.com/company/sociability)[**AI Foundation** $10M · Sept 2018](https://millionrounds.com/company/ai-foundation)[**Magic Leap** $794M · Feb 2016](https://millionrounds.com/company/magic-leap) ## Books by the people here 2 books written by people at Biz Stone: [Biz Stone](https://millionrounds.com/person/biz-stone). - Things a Little Bird Told Me: Confessions of the Creative Mind [Biz Stone](https://millionrounds.com/person/biz-stone) · 2014 3.93 from 3,915 ratings on Goodreads About the book Biz Stone, the co-founder of Twitter, discusses the power of creativity and how to harness it, through stories from his remarkable life and career. Things a Little Bird Told Me From GQ 's "Nerd of the Year" to one of Time 's most influential people in the world, Biz Stone… On AmazonListen on Audible - Who Let the Blogs Out?: A Hyperconnected Peek at the World of Weblogs [Biz Stone](https://millionrounds.com/person/biz-stone) · 2004 3.35 from 49 ratings on Goodreads About the book Blogs--or weblogs--are a huge phenomenon on the internet. From ultra-personal diary entries to specialized information on a wide variety of subjects (teen ranting to presidential campaigns), blogs are the new way to create a virtual community that can effect real-world change.… On AmazonListen on Audible More books for founders and investors on the [Reading List](https://millionrounds.com/reading-list). As an Amazon Associate we earn from qualifying purchases. ## On podcasts 2 episodes naming Biz Stone in the title, and 3 more that mention it. - [The Twenty Minute VC](https://millionrounds.com/podcasts/20vc) 8 Jan 2021 · 36 min 20VC: Twitter Co-Founder Biz Stone on The 3 Stages of Wealth, The Return To Twitter in 2017 and the Associated Missions and Challenges & Why Silicon Valley is not an "Insiders Only" Universe? Mentions [Biz Stone](https://millionrounds.com/fund/biz-stone)[Ev Williams](https://millionrounds.com/person/ev-williams) Apple PodcastsShow page - [Greymatter](https://millionrounds.com/podcasts/greymatter) 22 Sept 2016 · 35 min Biz Stone on “Unpivoting” and the Future of Search | Greymatter Mentions [Biz Stone](https://millionrounds.com/fund/biz-stone)[Josh Elman](https://millionrounds.com/fund/josh-elman) Apple PodcastsShow page ### Mentioned in - [This Week in Startups](https://millionrounds.com/podcasts/this-week-in-startups) 6 Jan 2026 · 55 min 2026 Starts with a bang: META AI Drama and Nvidia's $20B Groq Acquisition | E2230 Apple PodcastsShow page - [Latitud Podcast](https://millionrounds.com/podcasts/latitud) 12 May 2021 · 18 min #29 - Altitud | Gaston Irigoyen from Pomelo and the $9M seed round Apple Podcasts - [The Official SaaStr Podcast](https://millionrounds.com/podcasts/saastr) 26 Nov 2018 · 37 min SaaStr 202: Intercom COO Karen Peacock on Lessons Learned Running A $2.2Bn Line of Business at Intuit, The Most Important Metric You Probably Aren't Tracking & Why, When and How To Hire Your COO Apple PodcastsShow page ## Quick answers about Biz Stone ### What does Biz Stone invest in? Biz Stone invests most often at Series A and Seed (100% of the rounds on record). ### How active is Biz Stone? 9 investments on record, 1 of them in the last 12 months. The most recent was in Jun 2026. ### What has Biz Stone invested in recently? Its most recent investments on record: Board (Series A, Jun 2026), Sociability (Seed, Jun 2025) and AI Foundation (Undisclosed round, Sept 2018). ### How big are Biz Stone's cheques? The median round it joins is $15M. ### Does Biz Stone lead rounds? Rarely, if at all: none of its 9 investments on record names it as the lead. ### Where does Biz Stone invest? Most of the companies it backs are in the United States (63%), India (25%) and Australia (13%). ### Is Biz Stone investing now? Yes: it is actively investing, with 1 investments in the last 12 months. ### Who does Biz Stone invest alongside? Most often First Round Capital (2 rounds together). ## Raising now? Find the investors who back rounds like yours, and keep every conversation on one fundraising board. Find similar investorsOpen your CRM Built from the rounds we watched, its filings and its own website, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections?slug=biz-stone) · [Is this your firm? Claim it](https://millionrounds.com/claim?org=biz-stone)