Source
When this applies
when a smaller acquirer uses leverage and derivatives to accumulate a majority stake in a much larger target whose float shrinks as ownership concentrates
The takeaway
A leveraged position that depends on a shrinking, illiquid market to realize its value is fragile: you can be 'rich on paper' and insolvent in practice if you cannot convert the position to cash without destroying the price that created the paper gain.
Why it works
As acquired shares leave the float, remaining short-sellers must buy back borrowed shares at any price, spiking the price to artificial, unsustainable levels; but the acquirer can't realize that value by selling without crashing the price themselves, while still owing real debt service — leaving them trapped regardless of the paper value of their stake.
One level up
Illiquidity risk can destroy an otherwise sound strategic thesis; being technically 'right' about undervaluation does not protect you from liquidity mismatches, especially when a macro shock (credit crisis) removes your ability to refinance.
Where it stops holding
This stops working as a cautionary lesson only in markets where liquidity remains deep enough that large positions can be unwound without materially moving price, or where financing is not dependent on short-term credit markets.
Detail
situation: Porsche accumulated to just over 50% of VW using $10B of debt and derivatives, shrinking available float; VW briefly became the most valuable company in the world during an October 2008 short squeeze.
decision: Wiedeking's Porsche SE kept buying rather than realizing gains, planning to reach 75% ownership to consolidate VW's financials.
outcome: Lehman Brothers' collapse froze refinancing options; Porsche could neither sell (would crash the artificially high price) nor borrow more; VW/Piëch then declared Porsche financially unviable and VW ended up buying Porsche's operating company for a fraction of its earlier implied value, costing Wiedeking his job.
lesson: Highly leveraged accumulation strategies that depend on continuing access to cheap debt and a liquid exit are vulnerable to credit shocks, even when the core strategic thesis (VW undervalued) is correct.
In their words
So Porsche now is like completely trapped. They can't sell to service the debt because then the share price will crater. They can't buy because they take out any more debt. So they're just kind of like stuck in stasis at this point in time.