# OpenDoor Trading funding: rounds and investors

> OpenDoor Trading has raised $10M across 1 round since 2016. Investors include John Brynjolfsson & Hartfield and Titus & Donnelly. Every round with its source.

Source: https://millionrounds.com/company/opendoor-trading (Millionrounds; every figure on the page links to its filing or article)

United States · [Funded startup](https://millionrounds.com/companies)

# Who invested in *OpenDoor Trading*

One round we have observed, with the 2 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Fintech

Funding summary Updated 26 Oct 2026

**$10M** raised across 1 round since 2016, from 1 source

- **Latest round:** Round, $10M Jul 2016
- **Investors:** 2

See who backed them

## The rounds

- **Jul 2016** Round **$10M** John Brynjolfsson & Hartfield Titus & Donnelly Reported by FinSMEs

## Everyone who backed them

John Brynjolfsson & Hartfield no record of our own yet **1** round

Titus & Donnelly no record of our own yet **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=opendoor-trading).

## Quick answers about OpenDoor Trading

### Who invested in OpenDoor Trading?

OpenDoor Trading's investors include John Brynjolfsson & Hartfield and Titus & Donnelly.

### How much has OpenDoor Trading raised?

OpenDoor Trading has raised $10M across 1 round since 2016.

### When did OpenDoor Trading last raise?

OpenDoor Trading's most recent round was an Undisclosed round of $10M in Jul 2016.

### What was OpenDoor Trading's biggest round?

Its most recent round, $10M in Jul 2016, is also its largest on record.

### Who backed OpenDoor Trading first?

OpenDoor Trading's first round on record, in Jul 2016, was backed by John Brynjolfsson & Hartfield and Titus & Donnelly.

### What stage is OpenDoor Trading at?

OpenDoor Trading's latest named round is an Undisclosed round, in Jul 2016.

### Where is OpenDoor Trading based?

OpenDoor Trading is based in the United States.

## Companies like OpenDoor Trading

In the same sector, and raised in the last eighteen months.

[**Kalshi** $2.7B · Oct 2026](https://millionrounds.com/company/kalshi)[**xPay** $1.5M · Oct 2026](https://millionrounds.com/company/xpay)[**Coast** $77M · Oct 2026](https://millionrounds.com/company/coast)[**Whop** $400M · Oct 2026](https://millionrounds.com/company/whop)[**CapitalOS** $52M · Oct 2026](https://millionrounds.com/company/capitalos)[**Gradient** $24M · Oct 2026](https://millionrounds.com/company/gradient)

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