01Finance & accounting1860–1866
London's largest discount house held other banks' reserves, then gambled them on iron and shipping. It failed on Black Friday 1866. Bagehot wrote the rulebook.
Read the case ↗02Advertising & PR2025
The street-interview ad repeated a slur for Down syndrome, then cut in footage of a person with it. JINS Taiwan deleted the video and apologized.
Read the case ↗03Strategy & management1960–1961
Karl said cigarettes would attract shoplifters. Theo said they would sell. They divided Germany in two. Neither Aldi sells cigarettes today.
Read the case ↗04Finance & accounting1999–2024
AHMSA produced 5.5M tonnes of steel a year and survived two restructurings. A third failed. The tax authority added $3B. The court ordered it sold.
Read the case ↗05Sales & retail2020–2024
Sun Art Retail's revenue fell 13% to ¥72.6B. Twenty hypermarkets shut. The CEO left. Alibaba's bet on bricks-and-mortar grocery was unravelling.
Read the case ↗06Advertising & PR2019–2020
Ryanair ran ads calling itself the greenest airline. The ASA ruled the claims unsubstantiated: 'major airline' has no agreed definition.
Read the case ↗07Strategy & management2011–2024
170 million users, a NYSE IPO, a generation's photo album. Then WeChat arrived, the founder pivoted to used cars, and the site went dark in 2024.
Read the case ↗08Sales & retail2023
A 1990s star of French prêt-à-porter entered receivership in 2023 with ~100 stores. Revenue falling, treasury empty. The court put it up for sale.
Read the case ↗09Advertising & PR2025
An elevator ad said five-nut mooncake tasted bad because you're too young and life hasn't hit you yet. Pulled in one day. The apology blamed 'the leaders'.
Read the case ↗10Advertising & PR2023
好欢螺's WeChat headline read 《女性,是什么味道?》. The article meant 'don't define women.' The title defined them. China Women's Daily called it out by name.
Read the case ↗11Advertising & PR2023
China's biggest menswear brand signed the star of The Knockout. The retouched posters made him look like a wax figure. HLA deleted everything within hours.
Read the case ↗12Strategy & management2020–2021
Founder Zhang Yong bet the pandemic would end in months. It didn't. The stock lost 75% and $43 billion in market value.
Read the case ↗13Advertising & PR2022
After sacking 800 crew without notice, P&O's CEO told MPs it broke the law, said he'd make the decision again, and revealed replacements earned £5.50 an hour.
Read the case ↗14Strategy & management2017–2025
An Indian beauty aggregator raised $342M and bought brands at premiums. When cash ran out, Sirona sold for a third of cost, ScoopWhoop for a fifth.
Read the case ↗15Advertising & PR2019–2024
Byju's bought India's most visible sports sponsorship in 2019 and paid until September 2022. Then BCCI's ₹158 crore unpaid claim became an insolvency petition.
Read the case ↗16Advertising & PR2019
The June 2019 KAWS UT launch in China produced viral videos of brawls, leopard-crawls and mannequin-stripping. The shirts sold out; the brand flinched.
Read the case ↗17Advertising & PR2016
The caption read: 'Here you go, at 4pm est, write the below.' The entire marketing brief went live with the Bootea shake photo.
Read the case ↗18Sales & retail2018–2020
A 47-year-old British fashion chain was already losing money when the pandemic hit. Administration came in June 2020: 35 stores closed, 545 jobs gone.
Read the case ↗19Strategy & management2013–2023
A 93-year-old chain that once outsold B&M fell behind on price, stores and online. The owners took dividends, not action. Administration came in August 2023.
Read the case ↗20Marketing & brand2021–2025
He promised to beat Luckin in 35 months. T97 burned ¥100M in five years on flagship rents, a 150-person team and free site-selection — 11 stores remained.
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