Yellowtail

For accelerators & studios

A live investor map for every company in the cohort.

Stop maintaining the investor spreadsheet. Yellowtail gives each of your companies a shortlist matched to its stage and sector, with warm paths through your programme’s own network.

See the API →
CohortTop investors this week
  • Thermal RowClimate hardware
    • Northwind CapitalDeploying
    • Helios VenturesDeploying
    • Arclight FundSlowing
  • LedgerpostFintech infrastructure
    • Saltmarsh PartnersDeploying
    • Fjordline CapitalRaising
    • Arclight FundSlowing
  • Clinic OSVertical SaaS
    • Saltmarsh PartnersDeploying
    • Northwind CapitalDeploying
    • Amara DialloDeploying
  • Kiln & CoClimate hardware
    • Helios VenturesDeploying
    • Fjordline CapitalRaising
    • Amara DialloDeploying
Illustrative example

Your investor list is the most-used document in the programme. It's also out of date.

  • One list, twenty very different companies

    A climate hardware company and a fintech API company shouldn't get the same investor PDF.

  • Your network is your edge, but it's in people's heads

    Which partners have backed your alumni, and who's co-invested with them, is rarely written down.

  • Demo day invites are guesswork

    Half the room isn't deploying, and the right people weren't invited.

How Yellowtail helps.

  1. 01

    A personalised shortlist per company.

    Set each company’s profile once, and each gets its own ranked list that updates as investors move.

    Signals →
  2. 02

    Your programme's network, mapped.

    Alumni investors, mentors and co-investors become warm paths available to every company in the cohort, under your control.

    Network →
    Intro pathsMaya Chen · Northwind Capital
    • Amara Diallo(your angel)Strong
      YouADMaya Chen

      co-invested with Northwind twice in 2025

    • Leo Brandt(Arclight Fund scout)Medium
      YouLBMaya Chen

      shared a seed deal in 2024

    • A teammateWeak
      YouATMaya Chen

      connected, no shared deals or companies

    Illustrative example
  3. 03

    Demo day, planned on evidence.

    Build the invite list from investors who are deploying in your cohort's sectors, and see who's been active since last time.

  4. 04

    Built into your own portal.

    Use the API to put shortlists and signals inside the platform your founders already log into.

    API →
    curl https://api.yellowtail.ai/v1/signals \
  -H "Authorization: Bearer $YELLOWTAIL_API_KEY" \
  -G \
  --data-urlencode "sector=climate-hardware" \
  --data-urlencode "stage=seed" \
  --data-urlencode "region=uk" \
  --data-urlencode "since=14d"
    Illustrative example. Fictional investor.

One team, a whole cohort, no spreadsheet.

Template examples

  • A fund in a cohort company's sector closes → notify that company's partner lead.
  • Weekly → send each founder their own investor digest.
  • An alumni investor posts about a sector → match to current companies and suggest intros.
WorkflowOn
  1. Ran
    WhenA fund in your space closes

    Climate hardware · Pre-seed to Series A · UK & Nordics

  2. Ran
    IfReadiness is Deploying

    and the firm is not already on a list

  3. Ran
    ThenAdd to “Watch”

    with the filing as the source

  4. Ran
    ThenPost in #fundraising

    to the founder and the chief of staff

Illustrative example

FAQ

Is it one workspace per company, or one for the programme?

Both work: a programme workspace with a project per company, and access controls for founders. {{CONFIRM model}}

Can founders keep access after the programme?

{{CONFIRM}}

Platform or API plan?

Platform if your team and founders use Yellowtail directly. API if you want the data inside your own portal. Compare plans

Give the whole cohort the unfair advantage.

Vetted founders only · We reply within 48h

Read next