The structures failed their own test.
Start with Chewco, because it is the purest specimen. To stay off Enron's books, Chewco needed 3% genuinely independent equity at risk. Instead, its $383 million purchase of the JEDI stake was funded by a $240 million Barclays loan guaranteed by Enron, a $132 million advance from JEDI itself, and about $11.5 million of "equity" from vehicles controlled by Michael Kopper — an Enron employee who reported to Fastow — part of it propped up by cash collateral. Strip out what wasn't independent and wasn't at risk, and Chewco never met the 3% threshold from day one. Which meant Chewco should have been consolidated. Which meant JEDI should have been consolidated. Four years of reported earnings rested on an entity that flunked the only test it was built to pass.
The Raptors were stranger still: SPEs capitalized with Enron's own shares, standing behind hedges that protected Enron's income statement from losses on its investments. When both the investments and Enron's stock fell together in 2001, the "hedges" were claims on a counterparty whose only asset was the sponsor's own falling equity. Enron was insuring itself with itself. Booking the related notes receivable as an asset rather than a reduction of equity overstated shareholders' equity by $1.2 billion — an error corrected, abruptly, in October 2001.
These weren't business ventures that happened to be off balance sheet. They were consolidation tests reverse-engineered into legal entities — and the flagship structure failed even the test it was reverse-engineered to pass.
On November 8, 2001, Enron filed an 8-K conceding that Chewco, JEDI, and an LJM1 subsidiary "did not meet certain accounting requirements and should have been consolidated." The restatement cut reported net income by roughly $586 million across 1997–2001 — including 28% of 1999's profit — and revealed that reported debt had been understated by $561 million to $711 million in every year from 1997 through 2000. Restated 1997 earnings: $9 million, down from $105 million. Credit ratings, trading counterparties, and a rescue merger all depended on numbers that had just been declared unreliable. The end came in 24 days.
November 1997
Chewco buys CalPERS' $383M stake in JEDI — financed almost entirely with Enron-guaranteed debt, short of independent 3% equity from inception.
1999–2000
LJM1 and LJM2 formed with CFO Fastow as general partner; the four Raptor SPEs follow, capitalized with Enron's own stock.
August 23, 2000
Stock peaks at $90.75. The structures are carrying hundreds of millions in losses the market cannot see.
October 16, 2001
Enron reports a $618 million Q3 loss — including a $710 million pre-tax charge to terminate the Raptors — and discloses a $1.2 billion reduction in shareholders' equity. The SEC begins investigating.
November 8, 2001
Restatement 8-K: Chewco, JEDI, and an LJM1 subsidiary should have been consolidated. Net income restated down ~$586 million for 1997–2001; prior-year financials "should not be relied upon."
Late November 2001
Ratings collapse to junk; Dynegy abandons its rescue merger.
December 2, 2001
Chapter 11. $63.4 billion in assets — the largest US corporate bankruptcy ever at that point.
February 1, 2002
The board's Powers Report documents how the SPEs were used to misrepresent Enron's financial condition — and how its own controls over Fastow's conflicts were never enforced.