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sieve

Pre-SeedFunding signal
www.usesieve.com/B2BNew York, NY, USA
Market index

Market data is refreshed once per day from public sources. Information may be incomplete or outdated — verify independently before making decisions. This is not investment advice.

Investor read

Evidence-bound summary — expand sections for movement, risks, and signals.

Memo snapshot · Jun 29, 2026, 9:56 AM

Worth a meetingEvidence-bound analyst verdict
  • •Funding: Raised $16M across 2 funding rounds. Latest: $16M (May 2020). Investors: Y Combinator.
  • •Named backers in indexed sources: Y Combinator.
  • •Product/news: 11 product/news‑styled row(s); headline risk without filings

What would change this read

  • →Open roles appearing would signal burn capacity and growth intent.

DealFlow OS uses public web data and automated enrichment. Research may be incomplete, outdated, or incorrect. Verify important information before making investment or outreach decisions.

TL;DR

Seed (YC)

About sieve - Y Combinator AI Data Quality Platform About sieve - Y Combinator AI Data Quality Platform | sieve About sieve - Y Combinator AI Data Quality Platform | sieve

Funding

Raised $16M across 2 funding rounds. Latest: $16M (May 2020). Investors: Y Combinator. (High).

Quick read

  • •About sieve - Y Combinator AI Data Quality Platform About sieve - Y Combinator AI Data Quality Platform | sieve About sieve - Y Combinator AI Data Quality Platform | sieve
  • •Reported angle: About Sieve - Y Combinator AI Data Quality Platform

Key signals

Funding

Raised $16M across 2 funding rounds. Latest: $16M (May 2020). Investors: Y Combinator. (High).

Product / news

11 product/news‑styled row(s); headline risk without filings (High).

Traffic / social

1 social/traffic‑styled row(s) (Low).

Evidence summary

Verified facts

  • •About sieve - Y Combinator AI Data Quality Platform About sieve - Y Combinator AI Data Quality Platform | sieve About sieve - Y Combinator AI Data Quality Platform | sieve
  • •Reported angle: About Sieve - Y Combinator AI Data Quality Platform

Recent movers

  • •May 20, 2026 · ycombinator.com — sieve | Y Combinator
  • •May 20, 2026 · usesieve.com — About Sieve - Y Combinator AI Data Quality Platform
  • •May 11, 2026 · Blog / news — Eliminating 3+ hours of daily manual SEC filing verification | sieve Case Study

+5 more in Recent movement below

  • •May 20, 2026 · ycombinator.com — sieve | Y Combinator
  • •May 20, 2026 · usesieve.com — About Sieve - Y Combinator AI Data Quality Platform
  • •May 11, 2026 · Blog / news — Eliminating 3+ hours of daily manual SEC filing verification | sieve Case Study
  • •May 11, 2026 · Blog / news — Unlocking historical time-series data from custom publications | sieve Case Study
  • •May 11, 2026 · Blog / news — Tracking small-cap financials beyond Bloomberg's coverage | sieve Case Study
  • •May 11, 2026 · Blog / news — Eliminating 5:30 AM pagerduty alerts from data pipeline breakages | sieve Case Study
  • •May 11, 2026 · Blog / news — ESG data collection | sieve Case Study
  • •May 11, 2026 · Blog / news — Building global traffic datasets from fragmented port records | sieve Case Study
  • •Y Combinator

Suggested next steps

  • ▸Open a founder conversation this month; validate traction claims against the indexed evidence.
  • ▸Add to the active watchlist so new signals trigger alerts.

Funding & hiring signals

fundingConfidence: medium

KlearNow raises $16 million to bring customs clearance industry into the digital age

KlearNow raises $16 million to bring customs clearance industry into the digital age https://techcrunch.com/2020/05/01/klearnow-raises-16-million-to-bring-customs-clearance-industry-into-the-digital-age/

Affected score: noObserved: Jun 29, 2026Amount: $16 m
funding_articleMay 20, 2026Confidence: high

sieve | Y Combinator

YC S25 AI + human review data cleaning for hedge funds and investors.

Affected score: yesObserved: May 20, 2026Round: Pre-Seed
raisedpre-seed

Open roles (indexed)

No open roles indexed yet.

Public index
158Activity 75/100Elevated public activity signal
7D+2 (+1.3%)
30D+55 (+53.4%)
Needs Review

The index price and activity score are algorithmic estimates based on observed public company-level signals. They may be incomplete, stale, or inaccurate and are not investment, legal, tax, or business advice.

Source health

  • public_page:blogok
    Last checked Thu, Jul 2, 03:27 PM
  • public_page:aboutok
    Last checked Thu, Jul 2, 03:27 PM
  • public_page:homeok
    Last checked Thu, Jul 2, 03:27 PM
  • githubok
    Last checked Mon, Jun 29, 02:53 AM
  • socialok
    Last checked Mon, Jun 29, 02:52 AM

    sieve:reddit_credentials_not_configured

  • fundingok
    Last checked Mon, Jun 29, 02:52 AM

    discovery:google:google_cse_quota_exhausted

  • public_market_enrichmentok
    Last checked Mon, May 11, 09:07 AM
  • public_page:_blog_verifying-filing-dataok
    Last checked Mon, May 11, 09:07 AM
  • public_page:_blog_unlocking-historical-time-series-dataok
    Last checked Mon, May 11, 09:07 AM
  • public_page:_blog_tracking-small-cap-financialsok
    Last checked Mon, May 11, 09:07 AM
  • public_page:_blog_extracting-accurate-commodities-export-dataok
    Last checked Mon, May 11, 09:07 AM
  • public_page:_blog_esg-data-collectionok
    Last checked Mon, May 11, 09:07 AM
  • public_page:_blog_building-global-traffic-datasets-fragmented-port-recordsok
    Last checked Mon, May 11, 09:07 AM
  • public_page:_blog_bitcoin-metric-trackingok
    Last checked Mon, May 11, 09:07 AM
  • public_page:_blogok
    Last checked Mon, May 11, 09:07 AM
  • public_page:_aboutok
    Last checked Mon, May 11, 09:07 AM
  • public_page:_ok
    Last checked Mon, May 11, 09:07 AM

Signal timeline

24 dated public signals · newest on the right

Funding
Code
Press
Social
Company
Other
Feb 1, 2020Jun 2, 2023Sep 30, 2026
Funding (2)Code (5)Press (9)Social (1)Company (5)Other (2)

Signal breakdown

Latest momentum signal per category. Expand a card to inspect raw payloads.

Public source summary

Total evidence rows
24
Latest evidence
Thu, Jul 2, 03:27 PM

Source types found

about_pageblogfundingfunding_articlegithubofficial_siteotherpresssocial

Strongest / recent news-style rows

  • About sieve - Y Combinator AI Data Quality Platform

    About page · Thu, Jul 2, 03:27 PM · confidence 70%high quality

  • sieve | Y Combinator

    Wed, May 20, 05:44 PM · confidence 88%high quality

  • KlearNow raises $16 million to bring customs clearance industry into the digital age

    techcrunch · Mon, Jun 29, 02:52 AM · confidence 78%medium quality

Public signal timeline

Newest first · 24 event(s)

1
Thu, Jul 2, 03:27 PM · blog · 70% · publichigh qualityCase Studies & Blog - AI Data Extraction Success Stories | sieve

Source: Blog

Real-world examples of how hedge funds use sieve to extract and validate data from SEC filings, commodities reports, and financial documents. Learn best practices for AI-powered data extraction, automation strategies, and success stories from investment firms…

Source ↗
2
Thu, Jul 2, 03:27 PM · about_page · 70% · publichigh qualityAbout sieve - Y Combinator AI Data Quality Platform

Source: About page

Meet the ex-MIT, ex-Citadel team building AI-powered data quality agents for hedge funds. Y Combinator-backed startup revolutionizing financial data extraction and validation workflows with human-level accuracy.

Source ↗
3
Thu, Jul 2, 03:26 PM · official_site · 70% · publichigh qualitysieve - AI Scale, Human Quality Data Extraction From Documents and Web

Source: Homepage

Clean, human-validated financial data extraction and validation API for hedge funds. Extract accurate data from SEC filings, commodities reports, and financial documents with human-level accuracy.

Source ↗
4
Mon, Jun 29, 02:52 AM · official_site · 75% · publichigh qualitysieve - AI Scale, Human Quality Data Extraction From Documents and Web

Source: official_site

sieve - AI Scale, Human Quality Data Extraction From Documents and Web

Source ↗
5
Mon, Jun 29, 02:52 AM · official_site · 75% · publichigh qualityAbout sieve - Y Combinator AI Data Quality Platform

Source: official_site

About sieve - Y Combinator AI Data Quality Platform | sieve

Source ↗
6
Mon, Jun 29, 02:52 AM · official_site · 75% · publichigh qualityCase Studies & Blog - AI Data Extraction Success Stories | sieve

Source: official_site

Case Studies & Blog - AI Data Extraction Success Stories | sieve | sieve

Source ↗
7
Wed, May 20, 05:44 PM · funding_article · 88% · verified_publichigh qualitysieve | Y Combinator

YC S25 AI + human review data cleaning for hedge funds and investors.

Source ↗
8
Mon, May 11, 09:07 AM · blog · 70% · publichigh qualityEliminating 3+ hours of daily manual SEC filing verification | sieve Case Study

Source: Blog / news

A team of quant researchers was plagued by missing and incorrect data in an expensive feed of SEC filing data. Learn how sieve saves multiple hours of research work per day

Source ↗
9
Mon, May 11, 09:07 AM · blog · 70% · publichigh qualityUnlocking historical time-series data from custom publications | sieve Case Study

Source: Blog / news

Discover how sieve empowers hedge funds to extract accurate, validated historical time-series data from obscure, periodically published reports, transforming unstructured information into actionable intelligence.

Source ↗
10
Mon, May 11, 09:07 AM · blog · 70% · publichigh qualityTracking small-cap financials beyond Bloomberg's coverage | sieve Case Study

Source: Blog / news

Small companies are often not tracked/covered by Bloomberg. See how sieve made their data available and programmatically usable for one investor

Source ↗
11
Mon, May 11, 09:07 AM · blog · 70% · publichigh qualityEliminating 5:30 AM pagerduty alerts from data pipeline breakages | sieve Case Study

Source: Blog / news

See how sieve addresses data quality issues that previously led to production breakages/stoppages for a group of commodities-focused investors

Source ↗
12
Mon, May 11, 09:07 AM · blog · 70% · publichigh qualityESG data collection | sieve Case Study

Source: Blog / news

See how sieve saved a top ESG investor weeks of work collecting and verifying ESG data pulled from financial filings

Source ↗
13
Mon, May 11, 09:07 AM · blog · 70% · publichigh qualityBuilding global traffic datasets from fragmented port records | sieve Case Study

Source: Blog / news

Discover how sieve empowers hedge funds to build investment-grade trade datasets by sourcing, extracting, and normalizing fragmented data across formats, languages, and source structures.

Source ↗
14
Mon, May 11, 09:07 AM · blog · 70% · publichigh qualityAutomating bitcoin mining metrics from manual PDF transcription | sieve Case Study

Source: Blog / news

See how sieve helped an investor pull reliable, properly-formatted data from sell-side reports

Source ↗
15
Mon, Jun 29, 02:53 AM · github · 55% · publicmedium qualitysieve-ts

Source: npm_registry

Node.js/Typescript types and services for [Biarity/Sieve](https://github.com/Biarity/Sieve).

Source ↗
16
Mon, Jun 29, 02:53 AM · github · 55% · publicmedium qualitysieve-of-eratosthenes

Source: npm_registry

Sieve of Eratosthenes implementation.

Source ↗
17
Mon, Jun 29, 02:53 AM · github · 55% · publicmedium quality@neophi/sieve-cache

Source: npm_registry

Performant Map based cache using the SIEVE algorithm for eviction.

Source ↗
18
Mon, Jun 29, 02:53 AM · github · 55% · publicmedium quality@requisite/sieve-plugin-api

Source: npm_registry

TypeScript types for Sieve plugin development

Source ↗
19
Mon, Jun 29, 02:53 AM · github · 55% · publicmedium qualitysieve

Source: npm_registry

Sieve of Eratosthenes

Source ↗
20
Mon, Jun 29, 02:52 AM · social · 48% · publicmedium qualitySieve – scans Cursor/Claude chat history for leaked API keys

Source: hackernews

Source ↗
21
Mon, Jun 29, 02:52 AM · funding · 78% · publicmedium qualityKlearNow raises $16 million to bring customs clearance industry into the digital age

Source: techcrunch

KlearNow raises $16 million to bring customs clearance industry into the digital age https://techcrunch.com/2020/05/01/klearnow-raises-16-million-to-bring-customs-clearance-industry-into-the-digital-age/

Source ↗
22
Mon, Jun 29, 02:52 AM · other · 50% · publicmedium qualitySieve

Source: wikipedia

Source ↗
23
Mon, Jun 29, 02:52 AM · other · 50% · publicmedium qualitySievert

Source: wikipedia

Source ↗
24
Wed, May 20, 05:44 PM · press · 85% · verified_publicmedium qualityLaunch YC: sieve

YC launch for hedge-fund data extraction.

Source ↗

Official / company site

4 row(s)

The company's own site — the authoritative description of what they sell and to whom. Marketing-controlled, so treat claims as positioning rather than verified traction.

official_site·Thu, Jul 2, 03:26 PM·Confidence 70%high qualitypublic
sieve - AI Scale, Human Quality Data Extraction From Documents and Web

Clean, human-validated financial data extraction and validation API for hedge funds. Extract accurate data from SEC filings, commodities reports, and financial documents with human-level accuracy.

Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.

Open source ↗
official_site·Mon, Jun 29, 02:52 AM·Confidence 75%high qualitypublic
sieve - AI Scale, Human Quality Data Extraction From Documents and Web

sieve - AI Scale, Human Quality Data Extraction From Documents and Web

Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.

Open source ↗
official_site·Mon, Jun 29, 02:52 AM·Confidence 75%high qualitypublic
About sieve - Y Combinator AI Data Quality Platform

About sieve - Y Combinator AI Data Quality Platform | sieve

Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.

Open source ↗
official_site·Mon, Jun 29, 02:52 AM·Confidence 75%high qualitypublic
Case Studies & Blog - AI Data Extraction Success Stories | sieve

Case Studies & Blog - AI Data Extraction Success Stories | sieve | sieve

Why it matters: Primary source — the company's own positioning; best read for what they sell and to whom, not for traction claims.

Open source ↗

News

4 row(s)

Third-party press coverage. Independent reporting corroborates company claims; repeated coverage across outlets is a momentum signal.

about_page·Thu, Jul 2, 03:27 PM·Confidence 70%high qualitypublic
About sieve - Y Combinator AI Data Quality Platform

Meet the ex-MIT, ex-Citadel team building AI-powered data quality agents for hedge funds. Y Combinator-backed startup revolutionizing financial data extraction and validation workflows with human-level accuracy.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
other·Mon, Jun 29, 02:52 AM·Confidence 50%medium qualitypublic
Sieve

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
other·Mon, Jun 29, 02:52 AM·Confidence 50%medium qualitypublic
Sievert

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗
press·Wed, May 20, 05:44 PM·Confidence 85%medium qualityverified_public
Launch YC: sieve

YC launch for hedge-fund data extraction.

Why it matters: Independent coverage — third-party corroboration of company claims; recurring coverage indicates rising visibility.

Open source ↗

Funding / news

2 row(s)

Funding announcements and investor-database records. The strongest public signal of capitalization: round, amount, and syndicate quality when disclosed.

funding_article·Wed, May 20, 05:44 PM·Confidence 88%high qualityverified_public
sieve | Y Combinator

YC S25 AI + human review data cleaning for hedge funds and investors.

Why it matters: Funding signal — Pre-Seed per this source; verify against the linked original before relying on it.

Open source ↗
funding·Mon, Jun 29, 02:52 AM·Confidence 78%medium qualitypublic
KlearNow raises $16 million to bring customs clearance industry into the digital age

KlearNow raises $16 million to bring customs clearance industry into the digital age https://techcrunch.com/2020/05/01/klearnow-raises-16-million-to-bring-customs-clearance-industry-into-the-digital-age/

Why it matters: Funding signal — capitalization evidence; check the linked source for round, amount, and investors.

Open source ↗

GitHub

5 row(s)

Public engineering activity. Sustained commits, releases, and stars indicate real product development and, for dev tools, developer adoption.

github·Mon, Jun 29, 02:53 AM·Confidence 55%medium qualitypublic
sieve-ts

Node.js/Typescript types and services for [Biarity/Sieve](https://github.com/Biarity/Sieve).

Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.

Open source ↗
github·Mon, Jun 29, 02:53 AM·Confidence 55%medium qualitypublic
sieve-of-eratosthenes

Sieve of Eratosthenes implementation.

Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.

Open source ↗
github·Mon, Jun 29, 02:53 AM·Confidence 55%medium qualitypublic
@neophi/sieve-cache

Performant Map based cache using the SIEVE algorithm for eviction.

Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.

Open source ↗
github·Mon, Jun 29, 02:53 AM·Confidence 55%medium qualitypublic
@requisite/sieve-plugin-api

TypeScript types for Sieve plugin development

Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.

Open source ↗
github·Mon, Jun 29, 02:53 AM·Confidence 55%medium qualitypublic
sieve

Sieve of Eratosthenes

Why it matters: Engineering signal — public repo activity evidences active development and possible developer adoption.

Open source ↗

Social

1 row(s)

Social presence and mentions. A soft signal — useful for gauging attention and launch reception, not a substitute for verified traction.

social·Mon, Jun 29, 02:52 AM·Confidence 48%medium qualitypublic
Sieve – scans Cursor/Claude chat history for leaked API keys

Why it matters: Attention signal — social mention or presence; soft signal of market interest.

Open source ↗

Blog

8 row(s)

Company blog and newsletters. Shipping cadence and technical depth of posts hint at product velocity and team quality.

blog·Thu, Jul 2, 03:27 PM·Confidence 70%high qualitypublic
Case Studies & Blog - AI Data Extraction Success Stories | sieve

Real-world examples of how hedge funds use sieve to extract and validate data from SEC filings, commodities reports, and financial documents. Learn best practices for AI-powered data extraction, automation strategies, and success stories from investment firms…

Why it matters: Company publishing — post cadence and depth hint at product velocity.

Open source ↗
blog·Mon, May 11, 09:07 AM·Confidence 70%high qualitypublic
Eliminating 3+ hours of daily manual SEC filing verification | sieve Case Study

A team of quant researchers was plagued by missing and incorrect data in an expensive feed of SEC filing data. Learn how sieve saves multiple hours of research work per day

Why it matters: Company publishing — post cadence and depth hint at product velocity.

Open source ↗
blog·Mon, May 11, 09:07 AM·Confidence 70%high qualitypublic
Unlocking historical time-series data from custom publications | sieve Case Study

Discover how sieve empowers hedge funds to extract accurate, validated historical time-series data from obscure, periodically published reports, transforming unstructured information into actionable intelligence.

Why it matters: Company publishing — post cadence and depth hint at product velocity.

Open source ↗
blog·Mon, May 11, 09:07 AM·Confidence 70%high qualitypublic
Tracking small-cap financials beyond Bloomberg's coverage | sieve Case Study

Small companies are often not tracked/covered by Bloomberg. See how sieve made their data available and programmatically usable for one investor

Why it matters: Company publishing — post cadence and depth hint at product velocity.

Open source ↗
blog·Mon, May 11, 09:07 AM·Confidence 70%high qualitypublic
Eliminating 5:30 AM pagerduty alerts from data pipeline breakages | sieve Case Study

See how sieve addresses data quality issues that previously led to production breakages/stoppages for a group of commodities-focused investors

Why it matters: Company publishing — post cadence and depth hint at product velocity.

Open source ↗
blog·Mon, May 11, 09:07 AM·Confidence 70%high qualitypublic
ESG data collection | sieve Case Study

See how sieve saved a top ESG investor weeks of work collecting and verifying ESG data pulled from financial filings

Why it matters: Company publishing — post cadence and depth hint at product velocity.

Open source ↗
blog·Mon, May 11, 09:07 AM·Confidence 70%high qualitypublic
Building global traffic datasets from fragmented port records | sieve Case Study

Discover how sieve empowers hedge funds to build investment-grade trade datasets by sourcing, extracting, and normalizing fragmented data across formats, languages, and source structures.

Why it matters: Company publishing — post cadence and depth hint at product velocity.

Open source ↗
blog·Mon, May 11, 09:07 AM·Confidence 70%high qualitypublic
Automating bitcoin mining metrics from manual PDF transcription | sieve Case Study

See how sieve helped an investor pull reliable, properly-formatted data from sell-side reports

Why it matters: Company publishing — post cadence and depth hint at product velocity.

Open source ↗

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