Greg Jensen
About Greg Jensen
Greg Jensen is Co-Chief Investment Officer at Bridgewater Associates and sits on the firm's board of directors. He joined Bridgewater in 1996 after graduating from Dartmouth College with a degree in Economics and Applied Mathematics.
At Bridgewater he oversees investment strategies and research. That includes turning the firm's research into trading strategies and developing its proprietary investment models. He has been a key author of the firm's Daily Observations since 1996. From 2010 to 2016 he also served as Bridgewater's Co-CEO.
Little is public about Jensen's personal investments. Crunchbase lists one, a seed round in Multiplier. The companies below are the ones named in press coverage. They are not a complete list.
According to AI Street, Jensen became an early investor in OpenAI around 2016. The same report says he wrote Anthropic's first outside check after researchers he knew left OpenAI to start the company. The Anthropic claim comes from his own account.
In 2023 Bridgewater created AIA Labs, a unit that builds what the firm calls an artificial investor. Jensen leads that effort. In August 2026 Multiplier announced a $6M seed round led by Lux Capital. Jensen took part as an individual investor, alongside fellow Bridgewater Co-CIO Karen Karniol-Tambour.
The reported investments are in AI, either model developers (OpenAI, Anthropic) or AI tools for investment management (Multiplier). The Multiplier round was seed stage. Jensen has not publicly stated a check size, stage preference or geography for angel investing.
In public interviews he has said that using large language models alone to pick stocks is a poor approach. He has also said that combining them with statistical models could help investors.
- Multiplier: AI agents and infrastructure for asset managers, formerly WithAI. Jensen joined its $6M seed round in August 2026.
- OpenAI: AI research lab and maker of ChatGPT. AI Street reports Jensen was an early investor around 2016.
- Anthropic: AI developer. Jensen says he wrote its first outside check (AI Street). The source does not give a year.
- bridgewater.com/people/greg-jensen
- crunchbase.com/person/greg-jensen-5515
- ai-street.co/p/how-bridgewater-is-building-an-artificial
- fintech.global/2026/08/27/investors-bet-6m-that-multiplier-can-fix-fin
- pulse2.com/multiplier-raises-6-million-seed-funding-to-build-ai-operat
- sloaninvestmentconference.org/jensen
- hedgeweek.com/ai-loving-hedge-fund-cio-not-keen-chatbot-stock-picking
Investing activity
Greg Jensen appears in 1 AI deal tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $6M. The most recent is Multiplier (Seed, $6M, Aug 2026).
Greg Jensen most often invests alongside Lux Capital, Sandeep Nailwal, General Advance and Rebel Fund, and the companies they back on Lounge are mostly in AI.
Deals
Frequently asked questions about Greg Jensen
Is Greg Jensen an angel investor in AI startups?
He has invested personally in AI companies. He is reported as an early OpenAI investor and took part in the 2026 Multiplier seed round. He is best known as Co-CIO of Bridgewater Associates.
What AI startups has Greg Jensen invested in?
Reported investments are OpenAI (early investor, around 2016), Anthropic (he says he wrote its first outside check) and Multiplier (2026 seed round). No complete list of his angel investments is public.
What check size does Greg Jensen write?
He has not publicly stated a check size. His amount in the Multiplier round was not disclosed. That round totaled $6M across many investors.
Does Greg Jensen invest in seed-stage companies?
He took part in Multiplier's $6M seed round in 2026. No public statement describes a general stage preference.
What does Greg Jensen look for in AI investments?
He has not published investment criteria for angel deals. His public comments focus on AI for investing that combines language models with statistical models. He has also said that an artificial investor needs reasoning and ways to work with limited data.
How can founders contact Greg Jensen?
No direct pitch channel is public. The verified public page is his Bridgewater Associates profile, listed under sources.
Is Greg Jensen an angel investor?
Yes. Greg Jensen invests personally as an angel.
What AI companies has Greg Jensen invested in?
Greg Jensen's AI investments include Multiplier. The 1 round on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Greg Jensen invest at?
In the rounds tracked on Lounge, Greg Jensen has invested at Seed, with a median round of $6M.
Who does Greg Jensen co-invest with?
Greg Jensen's most frequent co-investors on Lounge are Lux Capital (1 deal), Sandeep Nailwal (1 deal), General Advance (1 deal), Rebel Fund (1 deal) and Amino Capital (1 deal).