As of Oct 15, 2026, Lightmatter's estimated valuation is $4.73B; its last round was a Series D on Oct 11, 2024, raising $415M at a $4.4B valuation.
Estimated Valuation$4.73B
Valuation As OfOct 15, 2026
Latest Raise$415M
Latest RoundSeries D
Latest Funding Valuation$4.4B
Latest Funding DateOct 11, 2024
About Lightmatter
Lightmatter is a photonic computing company using light instead of electricity to move data between AI chips, building optical interconnects that speed up and reduce power consumption in AI data centers.
Funding rounds
| Round | |||
|---|---|---|---|
| Oct 11, 2024 | Series D | $415M | $4.4B |
| Dec 18, 2023 | Series C | $170M | $1.2B |
| May 18, 2023 | Series C | $153.28M | $678.75M |
| Apr 20, 2021 | Series B | $80.81M | $245.51M |
| Feb 25, 2019 | Series A-1 | $22.29M | $92.15M |
| Feb 8, 2019 | Series A-1 | $22.29M | - |
| Dec 21, 2017 | Series A | $11.1M | $31.71M |
Perpetual markets
No perpetual markets available.
Token issuers
No token issuer markets available.
Frequently asked questions
What is Lightmatter's estimated valuation?
As of Oct 15, 2026, Lightmatter's latest tracked valuation estimate is $4.73B.
When was Lightmatter's last funding round?
Lightmatter's latest tracked funding round was a Series D on Oct 11, 2024, raising $415M at a $4.4B valuation.
Valuation and funding data updated Oct 16, 2026, 8:56 PM UTC.
Market data updated Oct 16, 2026, 8:56 PM UTC.