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The S&P Is Up 8% YTD — Private AI Companies Have Ripped 10x

SpaceX, OpenAI, Anthropic, Databricks — these are the names that turned early investors into nine-figure outcomes.

May 18, 2026

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4 min read

Retail is celebrating a 7-8% S&P 500 YTD gain like it's a victory lap.
Meanwhile, behind the curtain in the private market, SpaceX is up 150%+ from its early-2023 valuation, OpenAI has ripped 20x in three years, and Anthropic has more than tripled in under 18 months. The public market is the slowest game on the board. The real wealth — the kind that turns small money into generational money — is being built in the hidden stock market, and almost no retail trader has access.

Quick numbers that tell the entire story:

  • S&P 500 YTD: approx. 7-8%

  • Private market AI giants: 150% to 2,000%+ over comparable windows

  • Companies are staying private 10-15+ years now

  • The highest-growth phase of every modern winner happens before IPO

This is the part nobody on financial TV will say out loud. By the time a name like Anthropic or SpaceX hits a public ticker, the major returns have already been captured by venture funds, family offices, and accredited investors. Retail gets the leftovers — and then wonders why "buy and hold the S&P" feels like it's not building real wealth.

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The Deal Breakdown — Hidden vs Public Returns

Let me put the comparison in raw numbers. Same time windows, same dollar invested, dramatically different outcomes.

A few real comparisons:

  • SpaceX: approx. $137B valuation in early 2023 → approx. $350B+ in 2025. Roughly 155% appreciation in under three years

  • OpenAI: approx. $14B in 2021 → $300B+ this week. Over 20x in roughly four years

  • Anthropic: approx. $4B in 2022 → $60B+ this week. 15x in under three years

  • Databricks: approx. $28B in 2021 → $60B+ this week. More than double

  • xAI (Elon's AI play): Founded 2023 → $50B+ in under two years

Compare that to the S&P 500 over the same windows. The index has compounded at roughly 12% annualized — solid, but nowhere near the private market AI explosion. A $100K investment in the S&P three years ago would be worth around $135-140K. The same $100K in OpenAI (if you could have gotten in) would be worth $1.5-2 million.

That's the entire story of modern wealth creation in one comparison.

How the Mechanics Actually Work

Here's why VCX moves the way it does. It's a closed-end fund, not an ETF. That means it doesn't create or redeem shares constantly. Instead, the price is determined purely by supply and demand for the fund itself.

This creates wild divergences from NAV:

  • The fund is trading at a massive premium to its actual asset value

  • Underlying private companies are only re-marked when new funding rounds happen

  • Retail demand for AI exposure is doing most of the heavy lifting on price

That premium doesn't have to make sense to keep going up. When SpaceX is rumored to be eyeing a $2 trillion IPO and OpenAI keeps raising at higher and higher valuations, the math gets less important than the narrative pulling capital in. The rich know this. That's why they've been positioned in private markets for years.

The Institutional Context

This is exactly how big money has been playing the game while retail buys index funds. Pensions, sovereign wealth funds, and elite endowments allocate enormous chunks of capital to alternatives. They've been quietly compounding at 20-30% per year while everyone else fights over 8-10% S&P returns.

The structural reality:

  • Yale Endowment allocates approx. 40% to private equity/venture

  • Harvard, Stanford, Princeton all run similar allocations

  • Family offices average 25-35% in alternatives

  • High-net-worth individuals route capital through funds like Iconiq, Thrive, Coatue

Retail, meanwhile, has been told "just buy the index." That's the financial industry's polite way of saying "you don't get access to the real returns." The S&P 500 isn't a wealth-building strategy for the 21st century — it's a wealth-preservation strategy. There's a difference.

The Risk Asymmetry

Here's the part that matters. Private market investing isn't risk-free. Many startups fail. Valuations get marked down. Liquidity is limited — you can be locked up for years.

But the asymmetry is real:

  • A single 20x winner like OpenAI offsets dozens of failures

  • The S&P 500 has zero individual upside that compares

  • Private market returns are not correlated with public market noise

  • The wealth-building math fundamentally favors concentration in winners

The S&P 500 over the next decade will probably return 7-9% annualized. That's an okay outcome. But it's not the outcome that builds dynastic wealth. Every billionaire on the Forbes list — every single one — built their wealth through concentrated, illiquid, private-market exposure. Not through index funds.

The good news: vehicles like Fundrise Innovation Fund (VCX), Destiny Tech100 (DXYZ), and other newer wrappers have finally cracked open retail access to private market AI exposure. They're volatile. They trade at premiums to NAV. They're not for the faint of heart. But they exist — for the first time in history.

Stop comparing your returns to your neighbor's S&P portfolio. You're playing the wrong game. The wealth gap between the rich and everyone else isn't widening because the rich are smarter. It's widening because the rich have access to the asset class that compounds the fastest — and most retail traders don't even know it exists.

Here's the philosophy in one line: Public markets are where wealth is preserved. Private markets are where wealth is created. If you only invest in public markets, you've already capped your upside.

The Hidden Stock Market isn't a conspiracy. It's just the part of the market that requires you to look beyond the front page. SpaceX, OpenAI, Anthropic, Databricks — these are the names that turned early investors into nine-figure outcomes. The S&P 500 turned them into vacationers.

The gap between those two outcomes is the entire story of modern wealth. Don't be the trader who only sees the public ticker. The real game is happening one layer deeper.

Disclaimer: This content is for educational purposes only and does not constitute financial advice. Options trading involves risk, and not all trades will be profitable. Always manage risk responsibly.

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Intelligence from inside the $2 trillion pre-IPO market. Where smart money invests before the public knows.

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