AttoTude Funding, Investors & Competitors

AttoTude has raised $142M across 4 funding rounds, most recently a $52M Series C in June 2026.

Last AttoTude funding round

$52M

Series C · Jun 2026

Cumulative funding AttoTude raised

$142M

across 4 funding rounds

Key investors in AttoTude

  • Canaan Partners
  • Wing Venture Capital
  • Sutter Hill Ventures
  • Mayfield Fund
  • The Westly Group
  • DNX Ventures
  • Allegis Capital
  • Keysight

AttoTude Overview

About AttoTude

AttoTude develops optical interconnect technologies for AI data centers and hyperscale computing. Santa Clara, California-based, its silicon photonics platforms deliver 1.6 terabits per second per fiber with reduced power consumption compared to copper links. The solutions address bandwidth bottlenecks in GPU clusters, partnering with chipmakers for co-packaged optics integration.


Founded

2024

HQ

United StatesSan Francisco, CA

Status

Privately held

Customer focus

B2B

Revenue model

Product sales

AttoTude Funding History

AttoTude has raised a total of $142M across 4 funding rounds.

AttoTude's first fundraising round was a $11M seed round in March 2024. The most recent completed round was a $52M Series C in June 2026.

AttoTude funding rounds

AttoTude funding rounds
DateStageInvestorsRaisedDeal Summary
Jun 2026Series CThe Westly Group (lead); Canaan Partners; Sutter Hill Ventures; DNX Ventures; Keysight; Allegis Capital; Mayfield Fund; Wing Venture Capital$52M-
Apr 2025Series BMayfield Fund (lead); Canaan Partners; Sutter Hill Ventures; The Westly Group; Wing Venture Capital$50MAttoTude, a Menlo Park, California-based startup founded in 2024, develops a THz interconnect platform to address AI data center bottlenecks, offering high-speed, low-power communication technology that supports data throughput up to 40 meters with improved energy efficiency and reliability compared to conventional optics. The company combines THz radio design with traditional chip manufacturing to provide scalable interconnects for hyperscale and AI infrastructure at competitive costs. Led by serial entrepreneur Dave Welch, co-founder of Infinera and former CTO of SDL, and Joy Laskar, a Georgia Tech professor and founder of five RF and semiconductor startups, AttoTude is working with leading hyperscale and AI companies testing its technology. AttoTude raised $50 million in Series B funding in April 2025, led by Mayfield with participation from Canaan Partners, Sutter Hill Ventures, and Wing Venture Capital, bringing total funding to $91 million after a $30 million Series A and $11 million seed in 2024. The new capital will ramp up manufacturing, accelerate product development for volume production, deepen engagements with partners, and support commercial deployment at scale. The funding positions AttoTude to capitalize on AI-driven demand for advanced interconnects amid a concentrated VC market where AI captured 65% of 2025 deal value.
Sep 2024Series ACanaan Partners; Sutter Hill Ventures; Wing Venture Capital$29MAttoTude is a pioneer of terahertz (THz) interconnect technology designed for AI and hyperscale data center applications. The company's revolutionary platform leverages THz radios over wire technology to improve bandwidth, reliability, and energy efficiency compared to conventional interconnect solutions. Founded by Dave Welch, former co-founder of Infinera and CTO/VP of Corporate Development at SDL, and Joy Laskar, founder of five startup companies and former professor at Georgia Institute of Technology, AttoTude is headquartered in Menlo Park, California. AttoTude raised $29 million in Series A funding in September 2024, following an $11 million Seed round in March 2024. The Series A was led by investors including Canaan Partners, Sutter Hill Ventures, and Wing Venture Capital. In April 2025, the company announced a $50 million Series B funding round led by Mayfield, with participation from The Westly Group and existing investors Sutter Hill Ventures, Canaan Partners, and Wing Venture Capital, bringing total funding to $91 million. The company's founder and CEO Dave Welch emphasized that the THz platform addresses critical bandwidth, power, and reliability challenges in data center infrastructure powering AI workloads, positioning the technology as a paradigm shift that meets the explosive demand from AI and hyperscale data center providers.
Mar 2024Seed-$11MAttoTude raised $50 million in a Series B funding round led by Mayfield, with participation from Sutter Hill Ventures, Canaan Partners, and Wing Venture Capital. This brought the company's total funding to $91 million, following a $30 million Series A and $11 million seed round in 2024. The funding supports ramping up manufacturing, accelerating product development, and preparing for volume production of its THz interconnect technology. AttoTude develops high-speed, low-power communication solutions for AI and hyperscale data centers, addressing interconnect limitations with scalable tech offering up to 40 meters of data throughput, better energy efficiency, and reliability at competitive costs. Headquartered in Menlo Park, California, the company combines THz radio design with chip manufacturing to avoid costly optics in high-speed connections and is working with hyperscale and AI infrastructure firms testing its technology.

Who has invested in AttoTude?

8 investors have backed AttoTude across its funding rounds, including Canaan Partners, Wing Venture Capital, Sutter Hill Ventures, Mayfield Fund, The Westly Group and DNX Ventures.

Lead investors include The Westly Group and Mayfield Fund.


AttoTude Investors

Investors in AttoTude by funding rounds participated
InvestorHQRoundsRoleFirst check
Canaan PartnersUnited StatesUnited States3ParticipantSep 2024
Sutter Hill VenturesUnited StatesSan Francisco, CA3ParticipantSep 2024
Wing Venture CapitalUnited StatesSan Francisco, CA3ParticipantSep 2024
The Westly GroupUnited StatesSan Francisco, CA2LeadApr 2025
Mayfield FundUnited StatesUnited States2LeadApr 2025
DNX VenturesUnited StatesSan Francisco, CA1ParticipantJun 2026

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AttoTude Competitors

AttoTude competitors include listed companies like NVIDIA, Micron, SK Hynix and AMD, and private ones like Etched and PsiQuantum.

Public and private companies comparable to AttoTude
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
NVIDIAUnited StatesUnited StatesPublicly listed$216B$142B$5.3T15.6x
MicronUnited StatesUnited StatesPublicly listed$37B$18B$1.1T8.0x
SK HynixSouth KoreaSouth KoreaPublicly listed$71B$47B$902B4.3x
AMDUnited StatesUnited StatesPublicly listed$35B$7.1B$890B19.0x
EtchedUnited StatesCupertino, CAPrivate--$21B-
PsiQuantumUnited StatesSan Francisco, CAPrivate--$7B-

AttoTude Public Comps

AttoTude is still privately-owned, but its public comps include NVIDIA, TSMC, Broadcom, Samsung, Micron, SK Hynix, AMD, ASML, Intel and CXMT.

Last FYEV/RevenueEV/EBITDA
RevenueEBITDALast FYLTM2027ELast FYLTM2027E
NVIDIA$216B$142B24.4x15.6x37.1x23.8x
TSMC$120B$83B15.9x12.1x22.9x16.6x
Broadcom$64B$34B26.5x16.8x49.3x24.7x
Samsung$243B$67B4.4x2.4x15.8x4.4x
Micron$37B$18B29.0x8.0x60.3x9.6x
SK Hynix$71B$47B12.1x4.3x18.1x5.3x
AMD$35B$7.1B25.4x19.0x124.8x75.6x
ASML$38B$14B16.5x13.3x43.7x31.7x

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Common questions about AttoTude

When was AttoTude founded?AttoTude was founded in 2024.
Where is AttoTude headquartered?AttoTude is headquartered in San Francisco, CA, United States.
Is AttoTude publicly listed?No, AttoTude is a private, VC-backed company.
How much funding has AttoTude raised?AttoTude has raised $142M across 4 funding rounds.
What was AttoTude's last funding round?AttoTude's last funding round was a $52M Series C in June 2026, led by The Westly Group.
Who are AttoTude's investors?AttoTude's investors include Canaan Partners, Sutter Hill Ventures, Wing Venture Capital, The Westly Group, Mayfield Fund, DNX Ventures, Keysight and Allegis Capital.
Which companies are comparable to AttoTude?Companies comparable to AttoTude include NVIDIA, Micron, SK Hynix, AMD, Etched and PsiQuantum.

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