Pomegra
Elon Musk's tunnel startup closes a $3B Series D led by UAE investors, valuing it at $23B to fund 150-plus km of underground transport across Dubai and U.S. cities.
- The $23B valuation is roughly four times the $5.7B set in its 2022 Series C round.
- UAE-affiliated Shamal Holding led; Andreessen Horowitz, Sequoia, Temasek, and Valor Equity also participated.
- Capital is earmarked for the Dubai Loop and a broader UAE tunnel network, with U.S. city deployments planned.
Lead
The Boring Company closed a $3 billion Series D on September 10, 2026, lifting its valuation to $23 billion - roughly four times the $5.7 billion mark established in its $675 million raise four years earlier. UAE-affiliated Shamal Holding led the round, joined by Andreessen Horowitz, Sequoia Capital, Temasek, Valor Equity Partners, Human Capital, Vy Capital, and Baron Capital. Proceeds are directed at constructing more than 150 kilometers of underground transport infrastructure across the UAE, with a contracted Dubai project as the anchor, plus continued pursuit of U.S. city deployments.
What Is the Dubai Loop?
The Dubai Loop is The Boring Company's first utility-scale deployment in the Middle East, contracted through a partnership with Dubai's Roads and Transport Authority. The initial phase covers a 6.4-kilometer pilot route connecting the Dubai International Financial Centre and Dubai Mall through four stations. The full alignment extends to 22.5 kilometers and 19 stations, threading through Business Bay, the Dubai World Trade Centre, and the financial district. Tunneling is targeted to begin in the second half of 2026, pending approximately 48 permits across ten regulatory bodies.
Why Is UAE Capital Leading This Round?
Gulf sovereign and family-office money has been moving into hard-infrastructure technology at scale through 2025 and 2026, and Shamal Holding's lead position reflects a strategy among Dubai- and Abu Dhabi-linked investors to hold project-anchored stakes rather than passive limited partner positions in U.S. funds. For The Boring Company, the structure solves two problems simultaneously: a project-finance anchor in its largest active contract and a credibility signal for other city negotiations globally. The alignment of investor and contract geographies is not accidental.
Valuation Math
At $23 billion, The Boring Company is priced at a multiple that its completed revenue base cannot yet support. Its only finished commercial installation remains the Las Vegas Convention Center Loop, a $52.5 million project that ferries passengers between convention halls in Tesla vehicles. The Dubai Loop and a 150-plus km UAE network would represent a step-change in revenue scale - but neither is built. Whether the new capital converts into contracted kilometers on schedule will determine whether the $23 billion holds through any future liquidity event.
What Are the U.S. Expansion Plans?
The company has cited multiple U.S. cities as targets for the new capital, but no domestic contracts have been publicly announced. The Boring Company has a long history of high-profile U.S. proposals - Chicago, Los Angeles, Baltimore - that reached media coverage without reaching ground-breaking. The Series D provides runway to re-engage those conversations from a materially stronger financial position. Signed agreements, not proposals, remain the variable that matters.
Technology Claims Under Real-World Test
The Boring Company bores at 12-foot diameter using proprietary machines it positions as faster and cheaper than conventional metro tunneling. Independent comparisons have consistently found the cost gap narrower than internal presentations indicate. The Dubai work, with defined route, station count, and timeline, will be the most rigorous public test of those claims to date. Cost-per-kilometer data from that project, if disclosed, will carry more weight than any future pitch deck.
Outlook
The Series D puts The Boring Company in a structurally different position than any prior funding round: a contracted multi-kilometer project, an investor base with direct geographic stakes, and a $23 billion valuation that demands meaningful revenue to sustain. The Dubai Loop pilot - its delivery timeline, final cost, and operational reliability - is the near-term scorecard. U.S. city contracts, if secured, would broaden the thesis. Without them, the company's domestic story remains a forecast, not a business.
