Kulveer Taggar
About Kulveer Taggar
Kulveer Taggar is a serial founder and investor based in San Francisco. Crunchbase lists a master's degree from the University of Oxford. He has been through Y Combinator twice as a founder. The first time was in 2007 with Auctomatic, which he co-founded with Harj Taggar, Patrick Collison and John Collison, and which Live Current Media acquired. The second was in 2011 with Zeus Living.
He was co-founder and CEO of Zeus Living, a furnished-housing company. Crunchbase lists him in that role from September 2015 to November 2023. Zeus Living was acquired by Blueground. Press coverage describes the sale as happening in 2023.
After the sale he founded Phosphor Capital in early 2024. It is a venture firm that invests only in companies that have been through Y Combinator. Taggar says he has been to every YC demo day since 2007. This page is about Kulveer Taggar only. Harj Taggar, a YC partner and Initialized Capital co-founder, is a different person.
Before launching Phosphor, Taggar invested as an angel. Phosphor's launch announcement names Mux, Boom and Plenful among his angel investments. It also says he wrote more than 200 checks in the 12 months before July 2025 and received a YC rating of "Best" from dozens of partners and founders.
Crunchbase counts 48 investments for him, with 0 lead investments, 0 exits and 0 companies founded. PitchBook lists 40 investments, and its count is different from Crunchbase's. NFX Signal lists 56 investments on record and describes him as an angel investing since 2010. Counts differ by database, so treat them as approximate.
Phosphor Capital has raised $34M across two funds, according to TechCrunch. TechCrunch reports that YC CEO Garry Tan is among the backers. The firm's press release says its limited partners include an asset manager with over $10B in assets under management, several family offices and Bay Area accredited investors.
Crunchbase shows 40 AI investments since 2023 out of 48 in total. The AI companies it lists include Monumint, DeepNight, Octolane AI, DryMerge, Mastra, Fazeshift, Sim, Hamming AI, Gumloop, Reducto, Trieve and &AI.
Crunchbase shows him as an investor in the seed rounds of Gumloop (July 2024) and Reducto (July 2024). PitchBook records a Mastra deal dated October 2025 and lists Mastra as business and productivity software. Phosphor's press release names Reducto, Delve, Circleback and Gumloop as portfolio companies. A trade report describes Circleback and Gumloop as AI-native.
Crunchbase does not give round sizes or Taggar's own check amounts for most of these deals.
Taggar's stated focus is early-stage startups that have participated in Y Combinator. Phosphor's announcement says he aims to personally meet at least half of the founders in each YC batch. It also says he aims to invest in the top 15 to 20 percent of companies in each batch. TechCrunch quotes him on YC outcomes: "6% of YC companies become unicorns."
The companies he has backed are mostly AI and software, including developer and business tools. Founders who have not been through YC may find that Phosphor's mandate does not fit. His earlier angel investments were not limited to YC companies.
Check size is not stated by Taggar himself. NFX Signal lists an investment range of $100K to $300K for him as an angel. One trade report says Phosphor writes checks of $100K to $500K. Treat both as third-party figures and confirm with him directly. Crunchbase and PitchBook list the companies he has backed as US-based software startups.
- Reducto: AI company where he invested in the seed round in July 2024 per Crunchbase, and a named Phosphor portfolio company.
- Gumloop: AI company where he invested in the seed round in July 2024 per Crunchbase, and a named Phosphor portfolio company.
- Circleback: named as a Phosphor Capital portfolio company and described by a trade report as AI-native.
- Delve: named as a Phosphor Capital portfolio company in the July 2025 announcement.
- Mastra: listed in Crunchbase's AI portfolio, with a PitchBook deal dated October 2025.
- Mux: named in Phosphor's announcement as an earlier angel investment.
- Boom: named in Phosphor's announcement as an earlier angel investment.
- Plenful: named in Phosphor's announcement as an earlier angel investment.
- Monumint, DeepNight, Octolane AI, DryMerge, Fazeshift, Sim, Hamming AI, Trieve and &AI: AI companies in his Crunchbase portfolio since 2023.
- crunchbase.com/person/bcd0b911-4d14-8bba-c64d-dcc0d14d0448
- crunchbase.com/person/kulveer-taggar
- crunchbase.com/person/kulveer-taggar/person_overview_investor/timeline
- crunchbase.com/funding_round/reducto-seed--03e73b33
- crunchbase.com/funding_round/gumloop-seed--3e591e51
- globenewswire.com/news-release/2025/07/02/3109425/0/en/Entrepreneur-an
- techcrunch.com/2025/07/03/y-combinator-alum-launched-a-new-34m-fund-de
- theaiinsider.tech/2025/07/04/phosphor-capital-secures-34m-to-back-y-co
AI portfolio
Investing activity
Kulveer Taggar has made 48 investments according to Crunchbase. 40 of those investments since 2023 were in AI companies, including Monumint, DeepNight, Octolane AI, DryMerge and Mastra.
Deals
Frequently asked questions about Kulveer Taggar
Who is Kulveer Taggar?
Kulveer Taggar is a San Francisco angel investor and the founder of Phosphor Capital. He co-founded Auctomatic and Zeus Living, and both went through Y Combinator.
Does Kulveer Taggar invest in AI startups?
Yes. Crunchbase lists 40 AI investments since 2023 out of 48 in total. They include Gumloop, Reducto, Mastra, Sim, Hamming AI and Trieve.
What is Kulveer Taggar's check size?
He has not published one. NFX Signal lists $100K to $300K for him as an angel, and one trade report says Phosphor Capital writes $100K to $500K checks. Confirm with him directly.
What stage does Kulveer Taggar invest in?
He invests at the early stage, mainly seed and pre-seed. Phosphor Capital focuses on companies that have participated in Y Combinator.
What is Phosphor Capital?
Phosphor Capital is the venture firm Taggar founded in early 2024 to invest in YC companies. TechCrunch reports it has raised $34M across two funds.
Do I need to be in Y Combinator to pitch Kulveer Taggar?
Phosphor Capital invests only in YC companies. His earlier angel investments were broader, so a non-YC founder may still reach him as an angel, but the fund will not apply.
Is Kulveer Taggar an angel investor?
Yes. Kulveer Taggar invests personally as an angel. Crunchbase counts 48 investments.
What AI companies has Kulveer Taggar invested in?
Kulveer Taggar's AI investments include Monumint, DeepNight, Octolane AI, DryMerge, Mastra, Fazeshift, Sim and Hamming AI.
Where is Kulveer Taggar based?
Kulveer Taggar is based in San Francisco, United States.
How can founders reach Kulveer Taggar?
Founders on Lounge can see Kulveer Taggar's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with them under Warm Paths, and add Kulveer Taggar to their Investor Pipeline to track the conversation.