Experienced founder of seven companies and venture capitalist. Will work for great coffee.

Los Angeles, CA
Joined June 2007
Stephen Marcus retweeted
If you’ve never sat on the back of the ramp, feet dangling, and watch the Hogs coming to trough, you haven’t lived. 🤣😎🇺🇸🔥
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Two MASSIVE gets for the Valar exec team in the last week. Get in, we’re making energy 10x cheaper
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Announcing Valar Atomics' $1B series B led by Sequoia, with Valor Equity Partners, Atreides, Point72, Conviction, and others. Alongside the $1B equity, we have closed a $200m credit facility led by Erebor and JPM. I'm excited to welcome Shaun Maguire from Sequoia to our board.
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Valar Atomics CEO Isaiah Taylor: "Over the last 30 years, we became more interested in Powerpoint than in power plants, and it's your leadership that is changing that." 🔥
.@POTUS: "Last year, I signed 4 historic executive orders to reignite a wave of progress in America’s nuclear power production and promote this abundant, affordable, unlimited supply of energy for the American people. As part of this effort, I directed @SecretaryWright to establish a pilot program for advanced reactors and to see at least 3 cutting-edge reactors started up safely by the 4th of July... most believed the goal is impossible, but I’m delighted to say that FOUR companies succeeded in meeting that deadline."
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Stephen Marcus retweeted
Happy 250th America!!!!! 🇺🇸
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Stephen Marcus retweeted
On episode 74 of S3, we visit @valaratomics, the first startup in history to generate nuclear power, all while beating the July 4th deadline. In just 3 years, @isaiah_p_taylor went from pitching the idea on an Apple note to the reactor generating electricity, and now @nvidia is betting on that same reactor to power its next AI data center.
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Atlas Shrugged made simple: 1. Society runs on a small number of highly capable producers – industrialists, inventors, engineers – whose work everyone depends on but takes for granted. 2. The system starts rewarding need over achievement: the more capable you are, the more you’re expected to sacrifice for those who aren’t. 3. Success gets treated like a debt – taxed, regulated, resented – until the most capable start asking why they bother trying at all. 4. One by one, led by a man named John Galt, they simply withdraw – walking away rather than keep propping up a system that punishes them for producing. 5. Without them, the whole structure collapses, revealing that the “automatic” prosperity everyone assumed was actually being generated by specific, irreplaceable people. 6. Atlas is the Titan from Greek myth, condemned to carry the sky on his shoulders forever – Rand’s stand-in for the producer class, holding up civilization while getting blamed for it. 7. “Shrugged” is the whole argument in one word: Atlas doesn’t fight, doesn’t protest – he just quietly sets the weight down. Nobody realized the sky was being held up by anyone in particular, until the day it isn’t. You don’t want us? We just go…🤷🏻‍♂️
The Road to Serfdom made simple: 1. Plan the whole economy: someone must decide what gets made and who gets what, since people don’t naturally agree on one set of priorities. 2. These decisions are too big and detailed for normal democratic debate, so power shifts to a smaller group who can just act – technocrats. 3. Fixed laws everyone can rely on get replaced by case-by-case rulings, because a plan needs flexibility, not predictability. 4. Dissent becomes a problem to manage, not an opinion to vote on – the plan can’t work if people are free to ignore it. 5. Enforcing all that selects for people most willing to be ruthless – Hayek’s “worst get on top” – i.e. negative moral selection. 6. Since economics touches everything (your job, home, speech), controlling the economy ends up controlling your whole life. That’s the "serfdom."
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Stephen Marcus retweeted
This Wednesday at 3PM ET, please join Valar Atomics and NVIDIA for a special livestream on the future of atomic energy and artificial intelligence.
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Today we're announcing Valar Atomics' $130m Series A, led by Doug Philippone at Snowpoint Ventures and co-lead by Day One and Dream. Also joining Team Valar are Balerion, Contrary, DTX, Alumni, Crosscut, Triplepoint, Palmer Luckey, Shyam Sankar, and more great funds and angels.
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Stephen Marcus retweeted
I never thought I’d have a UFO sitting on my lawn. 😂 Shield AI has just unveiled their new AI-piloted fighter jet, the X-BAT. This Thursday, I’m joined by Shield AI’s Co-Founder and former Navy SEAL, Brandon Tseng, who breaks down the X-BAT in full detail. This autonomous fighter jet has a 2,000-mile range, is the world’s first AI-piloted fighter that doesn’t require a runway, and can take off and land vertically. This is one of those moments that makes me proud to be an American. Brandon also shares insight into other autonomous systems Shield AI has developed—systems already in operational use, including supporting the Coast Guard on counter-narcotics missions. @shieldaitech @brandontseng2
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Stephen Marcus retweeted
Earth is our runway. Introducing X-BAT, the world’s first AI-piloted VTOL fighter jet. With vertical takeoff and landing, long range, and full autonomy, X-BAT delivers combat power anywhere, anytime. This is the future of airpower. Watch the video: youtu.be/OnpuNlE3UxU Autonomy for the world. The greatest victory requires no war. #XBAT #Autonomy #NextGenTech #Airpower #Aircraft #Aviation #Defense
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Valar Atomics has broken ground with Kiewit! So grateful to the Valar Team, the State of Utah, and the people and leadership of Emery County for their close partnership to make this happen. Onward!
The Valar Atomics team and Kiewit are proud to announce our groundbreaking at the San Rafael Energy Research Center for Ward250, our first reactor! This is a major step on our mission to answer the President's call for three advanced reactors on American soil by July 4, 2026.
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Stephen Marcus retweeted
A great American.
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Stephen Marcus retweeted
This is what they destroyed today. I am so heartbroken, I can’t speak.
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We are proud to announce our Series A. @GVteam and @davemuni - with all Blue Water insiders joining - have led a $50M round that allows us to deliver for our customers and our country. 🇺🇸 We are not slowing down. We have used the last year to hire the best robotics engineers in Boston, build a team of veteran shipbuilders, and open a third office in Washington D.C. We are testing on the salt water on ship-scale hardware. We are building capability to attack America's shipbuilding crisis at its core. This round allows us to build our first full ship and keep pace with a Navy customer that demands speed. We will double down on our fully autonomous design, deepen relationships with our 50+ suppliers, and deliver mass-producible ships to the U.S. Navy and future customers. Thanks to our incredible employees, their families, and to our investors. All of us know this is only an early chapter in the story of America's maritime industrial renaissance. Much work lies ahead. 🛠️ Damn the torpedoes. @Sethwinterroth @smarcus @rylanhamilton @Turnip #shipbuilding
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Stephen Marcus retweeted
⚓️🤖 @USNavy just revealed4⃣x very important nuggets about the unmanned fleet, captured by @USNINews BUT @samlagrone missed some of the most important context. Here's my summary of the new public info + analysis of what USNI missed: 1⃣ Navy shifting from optionally manned ships to fully unmanned. Optionally manned "creates a lot of other requirements and cost and complications." - CAPT Matt Lewis Matt is right, and this is huge. Six months ago, a senior admiral was on stage at Surface Navy Association saying effectively autonomous = unmanned = attritable = optionally manned. Now Navy is letting companies choose to build fully unmanned. 2⃣ Enlisted Training: The first cohort of Robotics Warfare Specialists completed A-School training at @CarnegieMellon The Navy is developing its own school house, but relying on robotics expertise at CMU, MIT, and other great American institutions for speed in the interim 3⃣ Officer Training: Navy is developing a "SWO-Unmanned" officer pipeline. RADM Trinque N96 compared it to the SWO-Nuke pipeline. "This has to be mainstream" 4⃣ Navy will deploy an unmanned ship next year as part of a carrier strike group. If this isn't proof that unmanned can become mainstream... I don't know what is? 🤔Austin's Analysis: This is a good piece by USNI capturing some recent developments in Navy SWO and Unmanned communities. But, it misses perhaps the lynchpin of the Navy's strategy: 💨⏩ Buy. These. Boats. Fast. If Navy was taking a traditional, slow, COST+ MDAP approach to procuring the unmanned fleet, it would take a decade or more for this fleet to arrive. In an era of tight budgets and urgent geopolitical threats, only the lean, fast, iterative acquisition approach that Navy seems to be taking can buy many unmanned vessels quickly and affordable. Reporters may not like covering acquisition reform because it's not sexy. But it must be said. This is how we fix shipbuilding.
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What is the single greatest obstacle to revitalizing America's Maritime Industrial Base? Supply Chains. Frank Finelli, former A&D lead at The Carlyle Group, gives a masterclass on Supply Chains, highlighting two critical shortfalls: > Lack of vibrant mid-tier suppliers in America > Supply chain risk due to a "Diamond-shaped" supplier base, compounded by China "weaponizing the Periodic Table" If you care about shipbuilding, listen in.
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Information desk at John F. Kennedy Airport, 1956
Readers added context they thought people might want to know
The picture is of the TWA Flight Center, which did not open until 1962, so the photo couldn’t have been taken in 1956. en.wikipedia.org/wiki/TWA_Fligh…
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