Retym Funding, Investors & Competitors

Retym has raised $115M across 2 funding rounds, most recently a $75M Series D in March 2025.

See full Retym profile

Last Retym funding round

$75M

Series D · Mar 2025

Cumulative funding Retym raised

$115M

across 2 funding rounds

Key investors in Retym

  • Kleiner Perkins
  • Spark Capital
  • Fidelity
  • Mayfield Fund

Retym Overview

About Retym

Retym is a semiconductor startup developing silicon photonics for data centers and telecommunications. Tel Aviv-headquartered, the company designs ASICs integrating optical engines for high-speed, low-power interconnects. Retym's team combines expertise from optical communications and chip design to address bandwidth demands. Founded in 2023, it targets hyperscalers and telcos with scalable transceivers reducing energy consumption.


Founded

2020

HQ

United StatesSan Jose, CA

Website

retym.com

Status

Privately held

Customer focus

B2B

Revenue model

Product sales

Retym Funding History

Retym has raised a total of $115M across 2 funding rounds.

Retym's first fundraising round was a $40M undisclosed-stage round in May 2023. The most recent completed round was a $75M Series D in March 2025.

Retym funding rounds

Retym funding rounds
DateStageInvestorsRaisedDeal Summary
Mar 2025Series DSpark Capital (lead); Kleiner Perkins; Fidelity; Mayfield Fund$75MRetym, a semiconductor startup founded in 2021 and based in Cupertino, CA, emerged from stealth on March 31, 2025, specializing in programmable coherent digital signal processor (DSP) solutions for cloud and AI infrastructure. These DSPs enable faster and more efficient data transmission within and between AI data centers, addressing critical connectivity bottlenecks as AI workloads scale exponentially. The company targets distances of 10-120 kilometers, optimized for 30-40 km, using advanced modulation to prevent data corruption, and is producing its first chip on TSMC's 5nm process with samples in testing. On March 31, 2025, Retym announced a $75 million Series D funding round led by Spark Capital, with participation from existing investors Kleiner Perkins, Mayfield, and Fidelity Investments, bringing total funding raised across multiple rounds to over $180 million. Spark Capital's James Kuklinski joined Retym's board of directors. The round supports scaling to production, continued product development, and a multi-generation roadmap to meet surging AI-driven network bandwidth demands. Retym positions itself against incumbents like Marvell Technology in the coherent DSP market, emphasizing power-efficient, high-performance chips for blurring boundaries between intra-datacenter and datacenter interconnect needs. Co-founder and CEO Sachin Gandhi and CTO Dr. Roni El-Bahar lead a team with expertise in analog design, DSP, VLSI, and optical communications. The company plans its first product launch in 2025, aiming to integrate DSPs into high-speed transceiver designs and foster a competitive ecosystem for AI infrastructure. Investors highlighted Retym's potential to unlock the next wave of AI innovation amid intensifying infrastructure demands.
May 2023Undisclosed stage-$40MRetym is a semiconductor startup specializing in programmable coherent DSP (digital signal processing) solutions for cloud and AI infrastructure, enabling faster and more efficient data transmission within and between AI data centers. The company emerged from stealth in March 2025 after raising over $180 million across multiple rounds, including a Series C on May 24, 2023, and a $75 million Series D on March 31, 2025, led by Spark Capital with participation from Kleiner Perkins, Mayfield, and Fidelity Investments. Retym's chips address AI-driven network bandwidth demands, targeting distances of 10-120 kilometers optimized for 30-40 kilometers using TSMC's 5nm process, with samples in testing as of 2025. The market is dominated by Marvell Technology, and Retym aims to solve connectivity bottlenecks in large-scale AI computing requiring thousands of interconnected chips. The Series D funds scaling to production and multi-generation product development, with CEO Sachin Gandhi emphasizing next-generation AI infrastructure. Investors like Mayfield highlight Retym's expertise in redefining AI interconnect technologies for future data centers.

Who has invested in Retym?

4 investors have backed Retym across its funding rounds, including Kleiner Perkins, Spark Capital, Fidelity and Mayfield Fund.

Lead investors include Spark Capital.


Retym Investors

Investors in Retym by funding rounds participated
InvestorHQRoundsRoleFirst check
Kleiner PerkinsUnited StatesSan Francisco, CA1ParticipantMar 2025
FidelityUnited StatesBoston, MA1ParticipantMar 2025

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Benchmark 350K+ Funding Rounds and Disclosed VC Valuation Multiples

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Retym Competitors

Retym competitors include listed companies like Foxconn Industrial Internet, Ciena and Yangtze Optical Fibre, and private ones like Helium, Xinsheng Semiconductor and Morse Micro.

Public and private companies comparable to Retym
CompanyHQStatusRevenueEBITDAValuationRevenue Multiple
Foxconn Industrial InternetChinaChinaPublicly listed$135B$7.7B$181B0.9x
CienaUnited StatesUnited StatesPublicly listed$4.8B$333M$49B7.9x
Yangtze Optical FibreChinaChinaPublicly listed$2.1B$247M$38B11.1x
HeliumUnited StatesSan Francisco, CAPrivate--$1.2B-
Xinsheng SemiconductorChinaShenzhenPrivate--$456M-
Morse MicroAustraliaSydneyPrivate--$331M-

Retym Public Comps

Retym 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 Retym

When was Retym founded?Retym was founded in 2020.
Where is Retym headquartered?Retym is headquartered in San Jose, CA, United States.
Is Retym publicly listed?No, Retym is a private, VC-backed company.
How much funding has Retym raised?Retym has raised $115M across 2 funding rounds.
What was Retym's last funding round?Retym's last funding round was a $75M Series D in March 2025, led by Spark Capital.
Who are Retym's investors?Retym's investors include Kleiner Perkins, Fidelity, Spark Capital and Mayfield Fund.
Which companies are comparable to Retym?Companies comparable to Retym include Foxconn Industrial Internet, Ciena, Yangtze Optical Fibre, Helium, Xinsheng Semiconductor and Morse Micro.

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