S28 Capital (formerly Spectrum 28) is an early-stage venture capital firm based in San Francisco. Founded in 2016 by Kent Ho and Lyon Wong, the firm invests in startups disrupting long-standing industries across finance, genomics/digital health, real estate/construction, and emerging technology.
They made 2 investments in the last 12 months. Average disclosed round size is $29.2M (across 38 rounds with reported amounts).
Portfolio
29
Fund Size
$170M
Top Stage
Series A
Last 12 Mo
2
Team
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
42 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Precede Bio | Series B | $63.5M | Jan 2026 |
 RudderStack | Series C | $56M | Oct 2025 |
 Lightup Data | Series A | $9M | Aug 2023 |
 Tenzo | Series A | $5M | May 2023 |
 Clerk | Seed | $6.2M | Nov 2022 |
 Coefficient | Series A | $18M | Nov 2022 |
 Teleport | Series C | $110M | May 2022 |
| RudderStack | Series B | $56M | Feb 2022 |
 Teleport | Series C | $110M | Jan 2022 |
 OpsLevel | Series A | $15M | Jan 2022 |
 Panther | Series B | $120M | Dec 2021 |
| Coefficient | Seed | $6.7M | Oct 2021 |
| RRhumbix Com | Series B | $14.3M | Sep 2021 |
 CaptivateIQ | Series B | $46M | Apr 2021 |
 slapdash | Seed | $3.7M | Mar 2021 |
| PPanther Labs | Series B | $120M | Jan 2021 |
| Panther | Series A | $15M | Sep 2020 |
| PPanther Labs | Series A | $15M | Sep 2020 |
| PPanther Labs | Series A | $15M | Jan 2020 |
| AAcquire.io | Unknown | $5.4M | Nov 2019 |
 Freedom Robotics | Seed | $6.6M | Jul 2019 |
 Mattermost | Series B | $50M | Jun 2019 |
 Aurora Solar | Series A | $20M | Feb 2019 |
| Mattermost | Series B | $50M | Jan 2019 |
 Rhumbix | Series B | $14.3M | Jan 2019 |
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Top Co-Investors
Y Combinator11 shared
Innovation Endeavors6 shared
Lightspeed Venture Partners6 shared
Battery Ventures6 shared
Kleiner Perkins4 shared
Insight Partners4 shared
Redpoint Ventures4 shared
Shasta Ventures3 shared
Foundation Capital3 shared
HPS Investment Partners, LLC2 shared
Bessemer Venture Partners2 shared
Illumina Ventures2 shared
Coatue Management LLC2 shared
Snowflake Ventures2 shared
Webb Investment Network2 shared
Threshold Ventures2 shared
Union Labs2 shared
Greylock Partners2 shared
Blackhorn Ventures2 shared
Glynn Capital2 shared
Last updated: 7 October 2026