Investor Co-investors

Introduction

Returns the other investors that a given investor has co-invested with - that is, the firms that have appeared in the same deals.

Each row is a minimal investor reference plus a count of shared deals, the first and last dates on which both investors participated together, and the list of those shared deals.

Use it to map an investor's syndicate, surface frequent collaborators, or rank co-investment relationships by recency and volume.

Set up

Endpoint

GET https://multiples.vc/api/private/v1/investors/{id}/co_investors

Request - the investor id is a path parameter. Pagination is controlled by the page and limit query parameters; results are ordered by shared-deal volume (most shared deals first).

field	type	description
`id`	string (uuid)	Path parameter. The investor whose co-investors you want. Required.
`page`	integer	1-indexed page number (offset pagination). Default `1`, minimum `1`.
`limit`	integer	Page size. Default `100`, maximum `1000`.

All / minimal call - first page of co-investors for an investor:

GET /api/private/v1/investors/9918f9bb-0d74-434d-9029-a44cbee87637/co_investors

Paged call - second page, 50 rows per page:

GET /api/private/v1/investors/9918f9bb-0d74-434d-9029-a44cbee87637/co_investors?page=2&limit=50

Response - a data array of co-investors with shared-deal stats, plus a meta pagination block.

{
  "data": [
    {
      "id": "8433767b-a7ba-48a0-b509-49131878380b",
      "name": "Andreessen Horowitz",
      "short_name": "Andreessen Horowitz",
      "website": "http://www.a16z.com",
      "country": "USA",
      "shared_deals": 112,
      "first_shared_date": "2011-03-28",
      "last_shared_date": "2026-09-14",
      "deals": [
        {
          "id": "5cd03a1e-593a-4d1e-b1c9-752d37b95d6e",
          "target": {
            "id": "ab266acc-a2ca-45bf-851c-f62decb3138b",
            "name": "Temporal Technologies"
          }
        },
        {
          "id": "5204e32b-a9f1-498e-b883-8f7b0a4cc331",
          "target": {
            "id": "4b72fecb-6a54-4307-a750-85a518a90b84",
            "name": "Harvey"
          }
        }
      ]
    },
    {
      "id": "9bb61098-8ecf-4af2-ba5d-92126ea73faa",
      "name": "Lightspeed Venture Partners",
      "short_name": "Lightspeed Venture Partners",
      "website": "http://lsvp.com",
      "country": "USA",
      "shared_deals": 94,
      "first_shared_date": "2013-02-05",
      "last_shared_date": "2026-10-07",
      "deals": [
        {
          "id": "ae56f1d1-01fd-4029-8a08-d7680b4028c4",
          "target": {
            "id": "68d05e66-8089-44e8-83ba-ffa4be4df756",
            "name": "Gardens"
          }
        },
        {
          "id": "fc51bac6-0889-4622-892a-9cbd6d479bdb",
          "target": {
            "id": "29c27836-11d1-4677-935b-aa1c33aa0133",
            "name": "Profound"
          }
        }
      ]
    },
    {
      "id": "30b551ba-b70d-454a-978d-ea872df9a935",
      "name": "Y Combinator",
      "short_name": "Y Combinator",
      "website": "http://www.ycombinator.com",
      "country": "USA",
      "shared_deals": 79,
      "first_shared_date": "2014-03-25",
      "last_shared_date": "2026-10-21",
      "deals": [
        {
          "id": "e0ffdb5b-045e-4d4b-bf18-b096055518a1",
          "target": {
            "id": "caa0ad0a-5968-4524-98d8-2036c6f385f2",
            "name": "Blacksmith"
          }
        },
        {
          "id": "db8c4470-99be-49a7-8f24-ef0e3d7b35f6",
          "target": {
            "id": "a60ed06f-ceca-4ad2-acdc-d33963adccdb",
            "name": "Bunkerhill Health"
          }
        }
      ]
    }
  ],
  "meta": {
    "page": 1,
    "limit": 3,
    "returned": 3,
    "total": 2771,
    "has_more": true
  }
}

Notes on the example: each deals array is cut to its two newest entries here; live rows list every shared deal, so deals.length equals shared_deals. Deleted deals are left out of shared_deals, the dates and deals, the same as on /investors/{id}/investments and /investors/{id}/portfolio.

Each co-investor costs one record. The deals in deals are references and are not charged - see What each request is charged. For a deal's full record, pass its id to GET /transactions/{id}, or several ids to POST /transactions as filters.id.

Fields

Each item in data is a minimal investor reference plus shared-deal statistics.

Investor reference

field	type	description
`id`	string (uuid)	The co-investor's unique identifier.
`name`	string \| null	Investor display name.
`short_name`	string \| null	Short / display name.
`website`	string	Investor website URL. May be `null`.
`country`	string	ISO 3166-1 alpha-3 country code. May be `null`.

Shared deal activity

field	type	description
`shared_deals`	integer	Number of deals both investors participated in.
`first_shared_date`	string (date)	Date of the earliest deal the two investors shared. May be `null`.
`last_shared_date`	string (date)	Date of the most recent deal the two investors shared. May be `null`.
`deals`	array	The shared deals counted in `shared_deals`, newest first (undated deals last). See below.

Shared deal (`deals[]`)

field	type	description
`id`	string (uuid)	Deal ID. Use it with `/transactions/{id}` for the full record.
`target`	object \| null	The company that was funded or acquired: `id` and `name` only. May be `null`.
`target.id`	string (uuid)	Target company ID.
`target.name`	string \| null	Target company display name.

`meta` (pagination)

field	type	description
`page`	integer	1-indexed page number echoed back.
`limit`	integer	Page size used.
`returned`	integer	Rows in this response.
`total`	integer	Total co-investors matching the query.
`has_more`	boolean	True when further pages remain.
`usage`	object	Records this call used from the monthly quota. See Rate Limits.

Introduction

Set up

Investor reference

Shared deal activity

Shared deal (deals[])

meta (pagination)

On this page

Shared deal (`deals[]`)

`meta` (pagination)