- The Boring Company is in talks to raise $4 billion at a $20 billion valuation, according to The Wall Street Journal, nearly quadrupling its $5.7 billion valuation in 2022.
- Elon Musk’s tunnelling startup has never disclosed a lead investor, unlike SpaceX or xAI.
- The raise lands as Musk’s public stocks wobble, as SpaceX shares dropped about 8% over two sessions following its June debt announcement, and venture capital pivots toward physical infrastructure.
Elon Musk’s tunnelling startup The Boring Company is in talks to raise $4B at a $20B valuation, according to The Wall Street Journal. If it closes, the deal would nearly quadruple the company’s $5.7 billion valuation from April 2022 and rank among the largest infrastructure-technology funding rounds of the year.
The financing remains under negotiation, and terms could still change.
Who is funding The Boring Company?
Unlike SpaceX, xAI or Tesla, The Boring Company has never drawn the same public scrutiny over its investor base. Its Series C round closed at $675 million in April 2022, led by Vy Capital and Sequoia Capital, with participation from Valor Equity Partners, Founders Fund, 8VC, Craft Ventures and DFJ Growth, valuing the company at $5.7 billion.
Third-party funding trackers put its earlier rounds at roughly $113 million in 2018 and $120 million in a 2019 Series B, with figures coming from aggregators rather than company statements, so treat them as indicative rather than confirmed.
Investors in the proposed $4B round have not been disclosed. The question the headline poses remains open, and is likely to stay that way until the deal closes.
Can tunnels become the next infrastructure platform?
Musk founded The Boring Company in 2016 after publicly criticising Los Angeles traffic. It aims to cut urban congestion through underground transport networks built more cheaply than traditional tunnelling allows.
Its most visible project, the Las Vegas Convention Center Loop, moves passengers in Tesla vehicles between underground stations. The company has since announced expansion into Nashville and Dubai, and pitched, without breaking ground, tunnel systems beneath Baltimore, Chicago and Los Angeles.
Growth comes with execution risks
The Las Vegas project has drawn regulatory and safety scrutiny. Nevada’s Bureau of Water Pollution Control accused the company of violating environmental regulations nearly 800 times over a two-year period, according to a September 2025 cease-and-desist letter obtained by ProPublica; the state ultimately fined the company $242,800, down from a possible $3 million.
Separately, TechCrunch reported in November 2025 that Clark County firefighters suffered chemical burns during a safety drill at a Boring Company tunnel site, citing a Fortune investigation that also documented a worker’s crushing injury and an electrical shock incident earlier the same year.
Infrastructure businesses face permitting delays, long construction timelines and heavy regulatory oversight that can slow deployment regardless of the technology’s promise. For The Boring Company, execution remains the open question.
This fundraising also lands amid a broader shift in venture investing toward physical infrastructure. The same wave that carried SpaceX to a record $85.7B IPO in June 2026. That confidence hasn’t been unconditional: days after the IPO, SpaceX went back to Wall Street seeking $20B in fresh debt to refinance its xAI acquisition loan, and its shares dropped about 8% over two sessions as investors weighed the scale of that spending.
Whether investors are backing today’s Vegas Loop or Musk’s broader vision for underground mobility will become clearer once the round closes and the names behind it surface.
