Michael Burry, the hedge fund manager who became a household name after predicting the 2008 housing crisis, is making a bold new wager. This time it’s not about mortgage-backed securities. It’s about the Nasdaq 100, SpaceX, and the potential demotion of Tesla.
According to Business Insider, Burry’s Scion Asset Management has purchased put options on the Invesco QQQ Trust, the ETF that tracks the Nasdaq 100 index. His thesis: if SpaceX goes public and gets added to the Nasdaq 100, the resulting index rebalancing could trigger forced selling of existing constituents — most notably Tesla — as passive funds scramble to make room for what would likely be one of the largest entrants in the index’s history.
It’s a characteristically contrarian trade. And it hinges on a chain of events that, while not guaranteed, are increasingly plausible.
SpaceX has been valued at roughly $350 billion in recent secondary-market transactions, making it the most valuable private company in the world. Elon Musk has historically resisted taking SpaceX public, but pressure has been mounting. Employees want liquidity. Investors want exits. And Musk himself hinted in late 2024 that a Starlink spinoff IPO could come in the next couple of years, though he’s been vague on timing for SpaceX as a whole.
If SpaceX were to list on the Nasdaq and eventually qualify for the Nasdaq 100 — which requires meeting specific criteria around market cap, trading volume, and listing tenure — its sheer size would force a massive reshuffling of index weights. The Nasdaq 100 is a modified market-cap-weighted index, meaning the biggest companies get the biggest allocations. A $350 billion entrant doesn’t just slide in quietly.
Here’s where it gets interesting for Tesla. The Nasdaq 100 has concentration rules. No single company can exceed a certain weight, and the aggregate weight of companies above 4.5% is capped at 48%. Tesla currently sits as a top-ten holding in the QQQ. But if SpaceX enters at a massive valuation, something has to give. Index funds tracking the Nasdaq 100 — which collectively manage hundreds of billions of dollars — would be forced to sell shares of existing holdings to buy SpaceX stock. Tesla, already volatile and trading at elevated multiples, could face significant downward pressure from this mechanical rebalancing alone.
Burry’s bet isn’t really about whether SpaceX is a good company. It’s about the plumbing of passive investing.
The rise of index funds has created a world where additions and deletions from major indices trigger enormous, predictable capital flows. When Tesla itself was added to the S&P 500 in December 2020, index funds had to buy roughly $80 billion worth of shares in a single day. The reverse — forced selling due to rebalancing — can be equally violent. Burry appears to be positioning for that kind of structural dislocation.
There’s a timing question, of course. SpaceX hasn’t filed for an IPO. Even if it did, Nasdaq 100 inclusion wouldn’t happen overnight. The index reconstitutes annually in December, with eligibility requirements that include being listed for at least three months. So the earliest a 2025 IPO could lead to inclusion would be December 2025 or, more realistically, December 2026. Burry’s puts would need to be structured with enough runway to capture that event — or he’s betting that the market starts pricing in the disruption well before it happens.
Not everyone agrees with Burry’s read. Some analysts point out that the Nasdaq 100 has absorbed large new entrants before without catastrophic effects on existing members. Meta was added in 2013. Tesla joined in 2020 after its S&P inclusion. The index adjusted. But neither of those entrants arrived at a $350 billion valuation on day one of trading.
There’s also the Musk factor. He controls both SpaceX and Tesla. A scenario where his own company’s IPO tanks his other company’s stock is the kind of irony markets love to trade around. And Burry, who has a complicated history of betting against Musk’s companies — he shorted Tesla in 2021, took profits, then re-entered bearish positions — seems to relish the asymmetry.
The broader point Burry is making resonates beyond one trade. Passive investing now accounts for more than half of all U.S. equity fund assets, according to Morningstar. That concentration creates fragility. When a new giant enters an index, the selling isn’t discretionary — it’s mechanical. Fund managers don’t get to decide whether they think Tesla is overvalued. They just sell to match the new weights. That’s the vulnerability Burry is targeting.
So what should industry professionals take away from this? First, watch the SpaceX IPO timeline closely. Any SEC filing or concrete signal from Musk will immediately reprice options on QQQ and Tesla. Second, understand that index rebalancing events are becoming increasingly significant market-moving catalysts as passive flows dominate. And third, remember that Burry has been wrong before — spectacularly, in some cases — but his structural reasoning here is sound even if his timing proves off.
The trade is elegant in its simplicity. A massive private company goes public, enters a major index, and the mechanical consequences ripple through every fund that tracks it. Whether it plays out exactly as Burry envisions depends on variables he can’t control. But the logic? Hard to argue with.
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