sieve was founded by Nicole Lu in 2025.

Who are sieve's investors?

sieve's investors include Clocktower Ventures, Financial Venture Studio, Restive Ventures, Y Combinator, SBXi.

Where is sieve headquartered?

sieve is headquartered in New York City, US.

sieve

YC X25

New York City, US · Founded 2025 · 2 employees · 5 known investors

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Sieve provides a data quality platform that combines AI and human validation to clean and verify financial datasets for investment teams. The company serves asset managers, hedge funds, investment banks, family offices, and other financial institutions seeking to reduce time and cost spent on data validation and remediation.

Also known as Sieve Data Inc.

AI & Machine Learning Data & Infrastructure Enterprise Software Fintech Investing Data Engineering APIsUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (X25)

sieve was founded in 2025 by Nicole Lu.

Nicole Lu Co-Founder, CEONicole Lu worked at Citadel in research, trading, and data science roles, served as a management consultant at McKinsey, and developed cancer detection algorithms at the Broad Institute. She is co-founder and CEO of sieve, a company focused on data cleaning for financial firms.

Savannah Tynan

Investors · 5

Clocktower Ventureslisted by Clocktower VenturesSanta Monica · $100K – $20M

How we know: Clocktower Ventures's portfolio page · Y Combinator's founder network · Not right? Tell us

Financial Venture Studiolisted by Financial Venture StudioSan Jose

Restive Ventureslisted by Restive VenturesSan Jose · $50K – $2.5M

How we know: the VCSheet dataset · Y Combinator's founder network · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · Not right? Tell us

SBXireportedCambridge · $10K – $1M

How we know: Y Combinator's founder network · Not right? Tell us

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Companies working in the same space as sieve.

Legal entities · 1

corporate structure

Sieve Data Inc.

In the news

sieve helps hedge funds extract and clean data from any source directly into their existing toolsycombinator.com · May 2025

Frequently asked questions

What does sieve do?: Sieve provides a data quality platform that combines AI and human validation to clean and verify financial datasets for investment teams. The company serves asset managers, hedge funds, investment banks, family offices, and other financial institutions seeking to reduce time and cost spent on data validation and remediation.
Who founded sieve?: sieve was founded by Nicole Lu in 2025.
Who are sieve's investors?: sieve's investors include Clocktower Ventures, Financial Venture Studio, Restive Ventures, Y Combinator, SBXi.
Where is sieve headquartered?: sieve is headquartered in New York City, US.