---
id: "entity-lehman-brothers-d8"
type: "entity"
entityType: "organization"
canonicalName: "Lehman Brothers"
aliases: ["Lehman"]
source_timestamps: ["00:05:50"]
tags: ["wall-street", "2008-crisis", "investment-bank"]
related: ["claim-2008-near-collapse", "concept-counterparty-risk", "prereq-2008-crisis"]
sources: ["wallstlie"]
sourceVaultSlug: "10x-darkside-bitcoin-systemic-collapse-2026Jun25"
originDay: 8
---
# Lehman Brothers

## Profile

Lehman Brothers was a major U.S. investment bank that filed for Chapter 11 bankruptcy on **September 15, 2008** — widely regarded as the tipping point of the Global Financial Crisis.

## Role in This Vault

Lehman is the canonical example used by [[entity-scott-darkside]] to illustrate [[concept-counterparty-risk]] and the near-collapse of 2008 documented in [[claim-2008-near-collapse]]. The bankruptcy exposed the dense web of derivative and funding-market interconnection — institutions did not know whether trades executed Thursday would clear Monday.

## Aftermath

Lehman's failure forced government-coordinated rescues across the financial system (TARP, AIG bailout, Fed liquidity facilities) and prompted the post-crisis reform agenda (Dodd-Frank, Basel III, central clearing mandates).