When was Arbitrum founded?

Arbitrum was founded in 2018 and raised its 1st funding round 3 years after it was founded.

Where is Arbitrum located?

Arbitrum is headquartered in Princeton, United States.

How many employees does Arbitrum have?

As of Aug 31, 2026, the latest employee count at Arbitrum is 159.

Is Arbitrum a funded company?

Arbitrum is a funded company, having raised a total of $***** in its 1st and only funding round, a Seed round on Oct 08, 2021.

When was the latest funding round of Arbitrum?

Arbitrum's latest funding was a $***** Seed round on Oct 08, 2021, with participation from 1 investor.

Where does Arbitrum rank among its competitors?

Arbitrum ranks 4th amongst 47 active competitors, of which 22 are funded. It stands 9th in terms of total funding among its competitors. The most recent competitor to raise funding was Movement Network, which secured $100M in Jan, 2025.

Who are the top competitors of Arbitrum?

Arbitrum's top competitors include Optimism, Offchain Labs and Metis. Among them, Movement Network secured the most recent funding round in January, 2025.

Arbitrum - 2026 Company Profile, Team, Funding & Competitors

Arbitrum is a seed company based in Princeton (United States), founded in 2018 by Harry Kalodner and Ed Felten. It operates as a Blockchain-enabled application development platform for the fintech industry. Arbitrum has raised an undisclosed amount in funding from Delphi Ventures. The company has 47 active competitors, including 22 that are funded. Its top competitors include companies like Optimism, Offchain Labs and Metis.

Company Details

Blockchain-enabled application development platform for the fintech industry. It is a decentralized public network that allows startups or enterprises to build applications. It provides application development for payments, banking, fraud mitigation, and more.

Website: arbitrum.io
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Key Metrics

Founded Year

2018

Location

Princeton, United States

Stage

Seed

Latest Funding Round

Seed, Oct 08, 2021, $*****

Investors

Delphi Ventures & 8 more

Ranked

4^th among 47 active competitors

Employee Count

159 as on Aug 31, 2026

Investment & Acquisitions

Ethereum Institutional & 4 more

Similar Companies

Optimism & 41 more

View Arbitrum's full profile

Arbitrum has raised funding over 1 round. Its latest funding round was a Seed round on Oct 08, 2021 for $*****. 1 investor participated in its latest round. Arbitrum has 9 institutional investors.

Here is the list of recent funding rounds of Arbitrum:

Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Oct 08, 2021	2638177	Seed	2139826	5693035	9680030	5893448

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View details of Arbitrum's funding rounds and investors

The founders of Arbitrum are Harry Kalodner and Ed Felten.

Here are the details of Arbitrum's key team members:

Harry Kalodner: Co-Founder of Arbitrum.
Ed Felten: Co-Founder of Arbitrum.

View details of Arbitrum's Founder profiles and Board Members

Arbitrum's employee count trend

Arbitrum has 159 employees as of Aug 26. Here is Arbitrum's employee count trend over the years:

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Top competitors of Arbitrum include Optimism, Offchain Labs and Metis. Here is the list of Top 10 competitors of Arbitrum, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Optimism 2019, New York City (United States), Series B	Blockchain-based platform for optimistic rollup and executing smart contracts	$175M	Andreessen Horowitz, Paradigm & 16 others	72/100
2nd	Offchain Labs 2018, Princeton (United States), Series B	Developer of solutions for Ethereum smart contracts	$124M	ventures.coinbase.com, Lightspeed Venture Partners ... & 17 others	65/100
3rd	Metis 2018, Singapore (Singapore), Seed	Blockchain-based application development platform for developers	$4M	PARSIQ, MV Global & 34 others	63/100
4th	Arbitrum 2018, Princeton (United States), Seed	Blockchain-enabled application development platform for the fintech industry	-	Compound, Coinbase & 7 others	59/100
5th	AltLayer 2021, Singapore (Singapore), Series A	Blockchain-based network for hosting web3 applications	$21.6M	Polychain, Breyerlabs & 21 others	58/100
6th	Movement Network 2023, British Virgin Islands, Series B	Developer of modular move-based blockchains	$141M	dao5, Borderless Capital & 31 others	56/100
7th	Morph 2023, Singapore (Singapore), Seed	Provider of a blockchain platform for decentralized finance (DeFi) by utilizing Layer 2 protocols	$20.3M	DRAGONFLY, Pantera Capital & 8 others	54/100
8th	Rome 2024, Solana Beach (United States), Series A	Blockchain platform that modularizes Solana into a set of services so L2s can be decentralized as Solana	$9M	Hack VC, Bankless Ventures & 11 others	54/100
9th	Fuel Labs 2019, Toronto (Canada), Series A	Blockchain scaling and development solutions	$81.5M	CoinFund, Stratos Technologies & 16 others	52/100
10th	ENS 2017, Christchurch (New Zealand), Funding Raised	Blockchain-based platform for decentralized domain name and governance	-	Times Capital & 2 others	49/100

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Arbitrum has not made any acquisitions yet. Arbitrum has made 5 investments.

Here is the list of latest three $investments:

Date of Investment/Acquisition	Type	Company Name	Founded Year	Location
Jul 30, 2026	Investments	Ethereum Institutional	2026	-
Jul 02, 2026	Investments	Ethereum Institutional	2026	-
Oct 21, 2025	Investments	Bluwhale	2017	San Francisco (United States)