15 semiconductor investors in California
We list 15 semiconductor investors in California as of November 2026: each has an SEC filing on file, and its rows were last checked between 4 Nov 2026 and 10 Nov 2026. The cities with the most head offices on this list are San Francisco (4), Palo Alto (3) and Los Altos (2).
Top 5 semiconductor investors in California, ranked by our activity score
Among firms with a published profile and dated activity in the last 24 months. The rule: Activity score out of 100: recency of the latest dated activity, which is a fund filing or announcement, a deal or portfolio news (35: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (25; half of that when the sector is stated only), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (15) and completeness of the public record (10). Regional focus is our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns. The same rule orders the whole list; it is repeated in the method box.
Bison Ventures
Type: VC firm · HQ: San Francisco, CA · Stages: Pre-seed, Seed, Series A, Series B · Focus: Semiconductor, AI, Healthtech, Energy · Latest activity: Form D filing, Oct 2026 · Fund size on file: $160M (largest main fund, SEC Form D, 2025)
Latest Form D filing dated Oct 2026; $160M fund on file (SEC Form D, 2025); states semiconductors as a focus; names the US as where it invests; 2 named decision-makers on file.
Matter Venture Partners
Type: VC firm · HQ: Los Altos, CA · Focus: Semiconductor, AI, Robotics, Space · Latest activity: Form D filing, Sep 2026 · Fund size on file: $450M (largest main fund, SEC Form D, 2025)
Latest Form D filing dated Sep 2026; $450M fund on file (SEC Form D, 2025); states semiconductors as a focus; 6 named decision-makers on file.
Julian Capital: Deeptech Seed Fund
Type: VC firm · HQ: San Francisco, CA · Stages: Pre-seed, Seed · Focus: Semiconductor, Energy, Deep Tech, Healthtech · Latest activity: Form D filing, Aug 2026 · Fund size on file: $51M (largest main fund, SEC Form D, 2026)
Latest Form D filing dated Aug 2026; $51M fund on file (SEC Form D, 2026); states semiconductors as a focus; 1 named decision-maker on file.
Mayfield
Type: VC firm · HQ: Menlo Park, CA · Stages: Pre-seed · Focus: Semiconductor, AI, Consumer, Healthtech · Latest activity: Form D filing, Sep 2026
Latest Form D filing dated Sep 2026; states semiconductors as a focus; 2 named decision-makers on file.
FoundersX Ventures
Type: VC firm · HQ: Menlo Park, CA · Focus: Semiconductor, AI, Space, Robotics · Latest activity: Form D filing, Aug 2026 · Fund size on file: $50M (largest main fund, SEC Form D, 2024)
Latest Form D filing dated Aug 2026; $50M fund on file (SEC Form D, 2024); states semiconductors as a focus; 1 named decision-maker on file.
First 10 of 15 semiconductor investors in California
| Investor | Stagesour research | Focusour research | Latest dated activity | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|
| Bison VenturesVC firm · San Francisco, CA | Pre-seedSeedSeries ASeries B | SemiconductorAIHealthtechEnergy | Form D filingOct 2026 | $160Mlargest main fund, SEC Form D, 2025 | 4 Nov 2026 | 2 names, firm email · Unlock |
| Matter Venture PartnersVC firm · Los Altos, CA | SemiconductorAIRoboticsSpace | Form D filingSep 2026 | $450Mlargest main fund, SEC Form D, 2025 | 4 Nov 2026 | 6 names · Unlock | |
| Julian Capital: Deeptech Seed FundVC firm · San Francisco, CA | Pre-seedSeed | SemiconductorEnergyDeep TechHealthtech | Form D filingAug 2026 | $51Mlargest main fund, SEC Form D, 2026 | 4 Nov 2026 | 1 name · Unlock |
| MayfieldVC firm · Menlo Park, CA | Pre-seed | SemiconductorAIConsumerHealthtech | Form D filingSep 2026 | 4 Nov 2026 | 2 names · Unlock | |
| FoundersX VenturesVC firm · Menlo Park, CA | SemiconductorAISpaceRobotics | Form D filingAug 2026 | $50Mlargest main fund, SEC Form D, 2024 | 10 Nov 2026 | 1 name · Unlock | |
| Raisewell VenturesVC firm · Berkeley, CA | Seed | SemiconductorAIHealthtechRobotics | Form D filingJul 2025 | $33Mlargest main fund, SEC Form D, 2024 | 4 Nov 2026 | 1 name · Unlock |
| WI Harper GroupVC firm · San Francisco, CA | SeedSeries A | SemiconductorAIHealthtechBiotech | Portfolio newsMar 2026 | $150Mlargest main fund, SEC Form D, 2020 | 5 Nov 2026 | 8 names · Unlock |
| Clear VenturesVC firm · Palo Alto, CA | Pre-seedSeed | SemiconductorAISaaSCybersecurity | Portfolio newsMay 2026 | $30Mlargest main fund, SEC Form D, 2021 | 5 Nov 2026 | 8 names · Unlock |
| Rock Yard VenturesVC firm · Buena Park, CA | Pre-seedSeed | SemiconductorIndustrial TechRoboticsEnergy | Form D filingDec 2023 | $10Mlargest main fund, SEC Form D, 2023 | 5 Nov 2026 | 2 names · Unlock |
| G Vision CapitalVC firm · Palo Alto, CA | Seed | SemiconductorAIIndustrial TechHealthtech | Form D filingJan 2026 | 4 Nov 2026 | 3 names, firm email · Unlock |
You are seeing 10 of 15. The full list adds 5 more investors and 46 named decision-makers.
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How these 15 break down
By metro area
| Metro area | On this list | Share |
|---|---|---|
| The San Francisco Bay Area | 14 | 93% |
| Silicon Valley | 8 | 53% |
Silicon Valley is counted inside the San Francisco Bay Area as well.
By city
| City | On this list | Share |
|---|---|---|
| San Francisco | 4 | 27% |
| Palo Alto | 3 | 20% |
| Los Altos | 2 | 13% |
| Menlo Park | 2 | 13% |
By stage
| Stage | On this list | Share |
|---|---|---|
| Pre-seed | 5 | 33% |
| Seed | 10 | 67% |
| Series A | 3 | 20% |
Stage is our research. A firm can back more than one stage, and each share is of all 15 rows.
Method and limits
- Source
- All 15 rows carry an SEC filing (Form D or Form ADV). All 15 have a website we checked. Filing date and fund size are SEC data where a filing exists. Stage, sector and check size are our research.
- Inclusion rule
- Organizations that back startups. Individuals, buyout funds and firms we found to be inactive are left out. Sector: the firm states semiconductors as a focus on its own site, or we observed it in the firm's portfolio. Place: head office in California.
- Order
- Firms with a published profile come first. Activity score out of 100: recency of the latest dated activity, which is a fund filing or announcement, a deal or portfolio news (35: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (25; half of that when the sector is stated only), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (15) and completeness of the public record (10). Regional focus is our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns.
- Last refreshed
- November 2026. Rows on this list were checked between 4 Nov 2026 and 10 Nov 2026.
- Fill rates
- Of 15 rows: stage 11, sector 15, fund size 13, website 15. In the paid file: named decision-makers on 14 rows, firm email on 2, LinkedIn page on 4, check size on 3.
- Corrections
- Email [email protected] or use the update form. We act within 5 working days.
Questions
How many semiconductor investors in California are there?
We list 15 as of November 2026. 11 of the 15 have dated activity in the last 12 months. The newest item on the row is a fund filing for 8, a new deal for 1 and portfolio news for 2. The cities with the most are San Francisco (4), Palo Alto (3) and Los Altos (2).
Which semiconductor investors in California have a fund filing dated in the last 12 months?
8 of the 15 have a fund filing dated in the last 12 months, a first Form D notice or the yearly amendment of an older fund. The most recent on this list are Tyche Partners VEIR (Oct 2026), Bison Ventures (Oct 2026) and Mayfield (Sep 2026).
What is the typical fund size of semiconductor investors in California?
The median fund size on file for this list is $51M, across the 11 firms with a size on an SEC Form D. The fund on file is the firm's largest main fund on our record or, where no main fund states a size, its largest side vehicle such as a feeder or an opportunity fund. It is not always the firm's newest. The other 4 have no size on a Form D.
How do I contact semiconductor investors in California?
The paid file holds 46 named decision-makers across 14 of these 15 and a firm email for 2. We publish the address a firm lists itself, never a personal email. Each free row links to a profile with the firm's website.
Where does the data on semiconductor investors in California come from?
All 15 rows have an SEC filing on file (Form D or Form ADV). Filing date and fund size come from the filing. Stage, sector and check size are our research. Rows on this list were checked between 4 Nov 2026 and 10 Nov 2026. The whole file is due a recheck twice a year, and every row shows the date it was last checked.
Broader lists
Semiconductor venture capital firms in the US (43)Venture capital firms in California (1,094)
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