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- Retym
Retym Funding, Investors & Competitors
Retym has raised $115M across 2 funding rounds, most recently a $75M Series D in March 2025.
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
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
Website
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
| Date | Stage | Investors | Raised | Deal Summary |
|---|---|---|---|---|
| Mar 2025 | Series D | Spark Capital (lead); Kleiner Perkins; Fidelity; Mayfield Fund | $75M | Retym, 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 2023 | Undisclosed stage | - | $40M | Retym 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
| Investor | HQ | Rounds | Role | First check |
|---|---|---|---|---|
| 1 | Participant | Mar 2025 | ||
| 1 | Participant | Mar 2025 | ||
This data is available for Pro users. Sign up to see all 4 Retym investors. Start Free Trial | ||||
Benchmark 350K+ Funding Rounds and Disclosed VC Valuation Multiples
Sign up to see data on 350K+ funding rounds and disclosed revenue and EBITDA valuation multiples, from seed, through growth stage, to pre-IPO.
Start Free TrialRetym 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.
| Company | HQ | Status | Revenue | EBITDA | Valuation | Revenue Multiple |
|---|---|---|---|---|---|---|
| Publicly listed | $135B | $7.7B | $181B | 0.9x | ||
| Publicly listed | $4.8B | $333M | $49B | 7.9x | ||
| Publicly listed | $2.1B | $247M | $38B | 11.1x | ||
| Private | - | - | $1.2B | - | ||
| Private | - | - | $456M | - | ||
| Private | - | - | $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 FY | EV/Revenue | EV/EBITDA | ||||||
|---|---|---|---|---|---|---|---|---|
| Revenue | EBITDA | Last FY | LTM | 2027E | Last FY | LTM | 2027E | |
| $216B | $142B | 24.4x | 15.6x | 37.1x | 23.8x | |||
| $120B | $83B | 15.9x | 12.1x | 22.9x | 16.6x | |||
| $64B | $34B | 26.5x | 16.8x | 49.3x | 24.7x | |||
| $243B | $67B | 4.4x | 2.4x | 15.8x | 4.4x | |||
| $37B | $18B | 29.0x | 8.0x | 60.3x | 9.6x | |||
| $71B | $47B | 12.1x | 4.3x | 18.1x | 5.3x | |||
| $35B | $7.1B | 25.4x | 19.0x | 124.8x | 75.6x | |||
| $38B | $14B | 16.5x | 13.3x | 43.7x | 31.7x | |||
This data is available for Pro users. Sign up to see all Retym competitors and their valuation data. Start Free Trial | ||||||||
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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