Tesorb Signal: Tesla, SpaceX, and the Musk Companies

Everyone knows SpaceX for rockets and Starlink internet. But the fastest-growing, most strategic part of the company is a classified defense network you can’t subscribe to, can’t see, and increasingly can’t ignore. This week, we follow the contracts instead of the launch photos. SpaceX has two faces. One is the storefront everyone can walk up ... Read more

For a year, the world watched a trillion-dollar Tesla pay deal billed as the path to the first trillionaire. Then a different company crossed the line first. This week, why the headline number wasn’t the one that mattered, and what a trillion dollars actually is. On Friday, Elon Musk became the first person in history ... Read more

SpaceX soared 19% in its historic debut. Almost every other space stock crashed the same day — some by a third. The untold story of the IPO is who fell while the giant rose, and what the market just said about the future of the space industry. On the day of the biggest stock market ... Read more

The biggest IPO in history hit the market today. Trading apps buckled, the stock jumped past its debut price, and Elon Musk crossed a line no human being has crossed before. Here is what actually happened, and what it really changes. SpaceX went public today — and the market answered the question we asked in ... Read more

For twenty years Elon Musk swore SpaceX would never go public. This week it becomes the biggest stock-market debut in history, worth more than Tesla, and for the first time the market — not Musk — gets to price the dream. SpaceX debuts on Nasdaq today at $135 per share, valued at $1.77 trillion — ... Read more

The AI race is really a power race, and Tesla is selling the shovels. This episode follows the bottleneck almost nobody saw coming — why chips aren’t the limiting factor, power is — and how Tesla’s Megapack quietly became essential infrastructure for every major AI data center. Everyone watches the chip war. But a chip ... Read more

Tesla is famous for cars, robots, and rockets. But its most profitable product is a plain gray battery box almost nobody talks about, and the story starts with a famous 100 day bet in the Australian outback. Everyone watches Tesla’s cars, its robotaxis, and its humanoid robots. Meanwhile the company’s most profitable product just sits ... Read more

A showroom only matters if the product sells somewhere else. Part two asks whether the Boring Company’s tunneling-cost machine can work in a city that isn’t Vegas — and what Baltimore’s one-day reversal reveals about the real bottleneck. Part 2 of 2 — The Boring Company Chapters [00:00] The city that said yes — and ... Read more

Everyone treats The Boring Company as a punchline. They are missing what it actually became. Part one of two on why the Vegas Loop is a showroom, not the product. Part 1 of 2 — The Boring Company Chapters [00:00] A ride that started as a joke [00:48] The Hyperloop that never came, and the ... Read more

The robotaxi race usually gets framed as a coin flip between Tesla and Waymo. The numbers on the board today tell a very different story. We compare the two on scale, safety, and the opposite bets they’re making on how to build a self-driving car. Chapters [00:00] Half a million driverless rides a week — ... Read more

The Model X was Tesla’s own Fabergé egg — beautiful, intricate, and nearly impossible to manufacture. Its falcon wing doors took two extra years and a lawsuit to ship. But the painful lessons from building it became the production discipline that made the Model 3 the best-selling EV in the world. Part 2 of 2 ... Read more

The Model S wasn't just a car. It was a proof point. Before it, electric vehicles were golf carts. After it, they were the best cars on the road. Part 1 of our series on the cars that built Tesla.

For almost sixteen years, Tesla was the only way to invest in Elon Musk's vision. The SpaceX IPO changes that. We break down what happens to Tesla's stock price when the 'Musk premium' has somewhere else to go.

SpaceX is asking investors to pay $1.75 trillion. But what are they actually buying? Not a rocket. A platform. Starship is the only vehicle that can deploy next-generation Starlink satellites, land astronauts on the Moon, and eventually reach Mars. Flight 12 just proved the foundation works. Part 3 of 3.

On Wednesday, SpaceX filed the largest IPO in history. On Thursday, they announced the first human mission to Mars. On Friday, they launched the most redesigned rocket ever built. That's not a coincidence. That's a script. Part 2 of our three-part series on SpaceX's biggest week.

SpaceX launched Starship V3 on Friday, and the headlines can't agree on whether it worked. The booster broke apart, but Ship 39 lost an engine, compensated, deployed all 22 payloads, survived reentry, and landed in the Indian Ocean as planned. Part 1 of a three-part series on SpaceX's biggest week ever.

SpaceX filed its S-1 and the fine print reveals more than the financials. One person holds 85% of the voting power. Shareholders can't file class-action lawsuits. And the company's pitch includes asteroid mining in a legal document filed with the SEC. Part 2 of our S-1 deep dive.

SpaceX just filed its S-1, and for the first time in 24 years we can see the real numbers. One segment made $1.2 billion last quarter. Another lost $2.5 billion. We break down the three businesses hiding inside what could be the largest IPO in history.

In March, the CEOs of AT&T, T-Mobile, and Verizon all said satellite was complementary. Two months later, all three formed an alliance to fight Starlink. We break down the day SpaceX became a wireless carrier and what it means for the telecom industry.

The Musk vs. OpenAI trial lasted three weeks. The jury deliberated for two hours. We break down the verdict, what the trial revealed about OpenAI's founding, and the question that still has no answer.

Tesla's amended 10-K filing reveals $573 million in revenue from Elon Musk's other companies in 2025. SpaceX bought nearly one in five Cybertrucks sold last quarter. xAI purchased $430 million in Megapacks. And a $2 billion investment that shareholders voted down happened anyway, then quietly converted into SpaceX stock. We break down every dollar.

Neuralink's first real market might not be telepathy. It might be giving people their voice back. We look at the VOICE clinical trial, Kenneth Shock's speech demo, and what speech restoration means for Neuralink as a business.

SpaceX targets May 19 for the debut of Starship Version 3, carrying three times the payload of its predecessor. We break down what changed, why it took seven months, and what a two trillion dollar IPO is betting on.

SpaceX just filed paperwork for a $55 billion chip factory in rural Texas, with a full buildout that could reach $119 billion. That's more than the entire CHIPS Act. We break down what the filing says, why the price quintupled from the original announcement, and what it means for Terafab's chances of actually getting built.

SpaceXAI just gave Anthropic access to its Colossus supercomputer — 220,000 GPUs and 300 megawatts of compute. Anthropic immediately doubled Claude Code limits. We break down why Musk is renting compute to a rival, what it means for the SpaceX IPO, and the buried line about orbital AI data centers that nobody's talking about.

Tesla made $573 million selling products to SpaceX and xAI last year. We follow the money trail, shared factories, and converted stock to show why the Tesla-SpaceX merger isn't a future event — it's already underway.

SpaceX just secured a $60 billion option to buy AI coding startup Cursor. We break down the deal structure, why xAI couldn't build this in-house, and what the price tag reveals about the state of Grok.

In June 2012, the first Tesla Model S rolled off the line at Fremont. Fourteen years later, the last one has too. We break down why Tesla is retiring the cars that built its reputation, what's replacing them on the factory floor, and what it tells us about the company Tesla is becoming.

SpaceX's S-1 filing reveals Starlink generated $11.4 billion in revenue last year, making it the financial engine behind everything Elon Musk builds in space. But one uncomfortable number shows where all that money is going.

It costs fifteen cents to move a fully loaded Tesla Semi one mile. A diesel truck? About fifty cents. We break down the math behind the Semi's cost advantage, real-world fleet data, and what it means for the trucking industry.

Every original co-founder of Elon Musk's AI company xAI has left. Now SpaceX operators are running the rebuild, with a $2 trillion IPO on the line. We break down what happened and what it means.

In an Oakland courtroom, the world's richest man took the witness stand and told a jury that artificial intelligence could kill us all. We break down the Musk versus OpenAI trial that just kicked off in federal court — why OpenAI was built as a nonprofit, why that model couldn't survive contact with reality, and what this trial could actually change about who controls AI.

The next-generation Tesla Roadster was unveiled as a prototype in November 2017 with production promised for 2020. Nine years and at least eight broken deadlines later, the car still doesn't exist. We walk through the full timeline of delays, the escalating performance claims, and what the Roadster saga reveals about Tesla's pattern of promising big and delivering late.

Tesla quietly disclosed a $2 billion acquisition of an unnamed AI hardware company, buried in a single sentence in its Q1 2026 10-Q filing. The deal was never mentioned on the earnings call. We break down what the filing actually says, what the deal structure reveals about the target, and why Tesla's AI spending now dwarfs its car profits.

SpaceX just landed a rocket for the six hundredth time. The next day, Blue Origin lost a customer satellite on only its third New Glenn flight. We break down what SpaceX's launch dominance looks like in numbers, what went wrong for Blue Origin, and why the gap keeps getting wider.

On April 10, the Netherlands became the first country in Europe to approve Tesla's Full Self-Driving system. We break down what's different about European FSD, why one small country could unlock the continent, and what it means for Tesla's global autonomy strategy.

Tesla's Q1 2026 earnings beat expectations with a $3 billion cash flow swing. But the real story is what management said next: FSD is now the product, the car is just the delivery mechanism. Plus the Hardware 3 bombshell, robotaxi reality, and a $25 billion spending plan aimed at AI and robotics.

SpaceX filed for an IPO targeting a 1.75 trillion dollar valuation and a 75 billion dollar raise. That would shatter every record in stock market history. We break down what Starlink's revenue actually supports, why Musk is giving retail investors 30 percent of the shares, the xAI merger, the new 60 billion dollar Cursor deal, and the risks nobody in the hype cycle wants to talk about.

Tesla just expanded its robotaxi service to Dallas and Houston, making four cities total. The stock surged 12%. But behind the headlines, the numbers tell a more complicated story. We break down the fleet size gap, the safety data, the pricing war with Waymo, and what it all means for the trillion-dollar race to dominate autonomous rides.

Tesla's Optimus robot is working on factory floors and posing at the Boston Marathon. But the real story isn't the robot. It's Tesla's plan to build a million of them a year.

Tesla, SpaceX, and xAI announced a twenty-five billion dollar chip fab and the semiconductor industry laughed. Then Intel signed on — and announced a gallium-nitride chiplet breakthrough the same day. Lena Ruiz on why Terafab isn't really a bet on chips, but on orbital AI compute.