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Zephyr Fusion

Pre-Seed
www.zephyrfusion.com/IndustrialsSan Diego, CA, USA
Market index

Market data is refreshed once per day from public sources. Information may be incomplete or outdated — verify independently before making decisions. This is not investment advice.

Beta

DealFlow OS uses public web data and automated enrichment. Research may be incomplete, outdated, or incorrect. Verify important information before making investment or outreach decisions.

Investor read

Evidence-bound summary — expand sections for movement, risks, and signals.

Memo snapshot · May 20, 2026, 6:12 PM

Beta

DealFlow OS uses public web data and automated enrichment. Research may be incomplete, outdated, or incorrect. Verify important information before making investment or outreach decisions.

What they do

Zephyr Fusion

Funding

Raised $500K across 1 funding round. Latest: $500K Pre-seed (Sep 2025). Investors: Y Combinator. (High).

Quick read

  • •Zephyr Fusion
  • •Reported angle: Launch YC: Zephyr Fusion
  • •Indexed activity snapshot: 1 funding‑related row(s), 0 hiring‑related, 0 GitHub‑tagged, 1 product/news‑style — scoring reflects corpus coverage only.

Stage

Seed (YC)

Evidence summary

Verified facts

  • •Zephyr Fusion
  • •Reported angle: Launch YC: Zephyr Fusion
  • •Indexed activity snapshot: 1 funding‑related row(s), 0 hiring‑related, 0 GitHub‑tagged, 1 product/news‑style — scoring reflects corpus coverage only.

Recent movers

  • •May 20, 2026 · ycombinator.com — Zephyr Fusion | Y Combinator
  • •May 20, 2026 · ycombinator.com — Launch YC: Zephyr Fusion
  • •May 20, 2026 · ycombinator.com — Zephyr Fusion | Y Combinator
  • •May 20, 2026 · ycombinator.com — Launch YC: Zephyr Fusion
  • •Y Combinator

Funding

Raised $500K across 1 funding round. Latest: $500K Pre-seed (Sep 2025). Investors: Y Combinator. (High).

Hiring

No hiring/careers evidence indexed (Low).

GitHub

No GitHub‑linked evidence indexed (Low).

Product / news

1 product/news‑styled row(s); headline risk without filings (High).

Traffic / social

No traffic/social evidence indexed (Low).

Funding & hiring signals

funding_articleMay 20, 2026Confidence: high

Zephyr Fusion | Y Combinator

Fall 2025 batch; in-orbit megawatt-class fusion power for space industry.

Affected score: yesObserved: May 20, 2026Round: Pre-Seed
raisedpre-seed

Open roles (indexed)

No open roles indexed yet.

Failed or blocked links

  • public_page:_pressnot_found
    Last checked Mon, May 11, 04:38 AM

    HTTP 404

  • public_page:_newsnot_found
    Last checked Mon, May 11, 04:38 AM

    HTTP 404

  • public_page:_jobsnot_found
    Last checked Mon, May 11, 04:38 AM

    HTTP 404

  • public_page:_companynot_found
    Last checked Mon, May 11, 04:38 AM

    HTTP 404

  • public_page:_careersnot_found
    Last checked Mon, May 11, 04:38 AM

    HTTP 404

  • public_page:_blognot_found
    Last checked Mon, May 11, 04:38 AM

    HTTP 404

  • public_page:_aboutnot_found
    Last checked Mon, May 11, 04:38 AM

    HTTP 404

  • public_page:customersnot_found
    Last checked Sun, May 10, 11:00 PM

    HTTP 404

  • public_page:pricingnot_found
    Last checked Sun, May 10, 11:00 PM

    HTTP 404

  • public_page:pressnot_found
    Last checked Sun, May 10, 11:00 PM

    HTTP 404

  • public_page:newsnot_found
    Last checked Sun, May 10, 11:00 PM

    HTTP 404

  • public_page:blognot_found
    Last checked Sun, May 10, 11:00 PM

    HTTP 404

DealFlow growth score
42.0Limited recent public signal
7D-12%
30D+0%
Needs Review

The score is an algorithmic estimate based on observed public company-level signals. It may be incomplete, stale, or inaccurate and is not investment, legal, tax, or business advice.

Source health

  • public_market_enrichmentok
    Last checked Mon, May 11, 04:38 AM
  • public_page:_ok
    Last checked Mon, May 11, 04:38 AM
  • public_page:homeok
    Last checked Mon, May 11, 04:38 AM

DealFlow score momentum

427D -1230D +0
100500
2026-05-20: 42

More runs will build history.

The score is an algorithmic estimate based on observed public company-level signals. It may be incomplete, stale, or inaccurate and is not investment, legal, tax, or business advice.

Signal breakdown

Latest momentum signal per category. Expand a card to inspect raw payloads.

Public source summary

Total evidence rows
4
Latest evidence
Wed, May 20, 06:12 PM

Source types found

company_sitefunding_articleofficial_sitepress

Strongest / recent news-style rows

  • Zephyr Fusion | Y Combinator

    Wed, May 20, 06:12 PM · confidence 88%high quality

    https://www.ycombinator.com/companies/zephyr-fusion

  • Launch YC: Zephyr Fusion

    Wed, May 20, 06:12 PM · confidence 85%medium quality

    https://www.ycombinator.com/launches/Oox-zephyr-fusion-in-orbit-fusion-power

Public signal timeline

Newest first · 4 event(s)

1
Wed, May 20, 06:12 PM · funding_article · 88% · verified_publichigh quality

Zephyr Fusion | Y Combinator

Fall 2025 batch; in-orbit megawatt-class fusion power for space industry.

Source ↗
2
Wed, May 20, 06:12 PM · company_site · 85% · verified_publichigh quality

Zephyr Fusion

Megawatt-class in-orbit fusion power; backed by YC.

Source ↗
3
Mon, May 11, 04:38 AM · official_site · 90% · publichigh quality

Zephyr Fusion

Source: Homepage

Fusion power for tomorrow's industrial revolution in space

Source ↗
4
Wed, May 20, 06:12 PM · press · 85% · verified_publicmedium quality

Launch YC: Zephyr Fusion

Founders with 35+ years combined fusion research experience.

Source ↗

Official / company site

2 row(s)

company_site·Wed, May 20, 06:12 PM·Confidence 85%high qualityverified_public

Zephyr Fusion

Megawatt-class in-orbit fusion power; backed by YC.

https://www.zephyrfusion.com/
official_site·Mon, May 11, 04:38 AM·Confidence 90%high qualitypublic

Zephyr Fusion

Source name: Homepage

Fusion power for tomorrow's industrial revolution in space

https://zephyrfusion.com/

News

1 row(s)

press·Wed, May 20, 06:12 PM·Confidence 85%medium qualityverified_public

Launch YC: Zephyr Fusion

Founders with 35+ years combined fusion research experience.

https://www.ycombinator.com/launches/Oox-zephyr-fusion-in-orbit-fusion-power

Funding / news

1 row(s)

funding_article·Wed, May 20, 06:12 PM·Confidence 88%high qualityverified_public

Zephyr Fusion | Y Combinator

Fall 2025 batch; in-orbit megawatt-class fusion power for space industry.

https://www.ycombinator.com/companies/zephyr-fusion

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