Credit Suisse Collapse: A 167-Year Bank Undone

Key Takeaways

• Credit Suisse, founded in 1856, failed in March 2023 after years of scandals and losses.
• UBS bought it for about CHF 3 billion in stock under Swiss-government brokering.
• The Swiss National Bank pledged liquidity support running into hundreds of billions of francs.
• Regulators wrote about CHF 16 billion of AT1 bonds to zero while shareholders kept value.

Background

Schweizerische Kreditanstalt, later Credit Suisse, was founded by industrialist and politician Alfred Escher in Zurich in 1856 to finance Switzerland's railways and industrial growth. For more than a century and a half it grew into one of roughly 30 banks the regulators class as global systemically important, a pillar of Swiss finance and a fixture in global wealth management and investment banking.

By the early 2020s, though, the bank had become a serial source of bad headlines. A 2019 corporate spying scandal, in which the bank hired private investigators to tail a departing executive, cost Credit Suisse its chief operating officer and, in February 2020, its chief executive Tidjane Thiam. Chairman Urs Rohner publicly called the surveillance "inexcusable." Leadership turned over repeatedly in the years that followed.

The reputational damage was matched by financial damage. In 2021 the bank absorbed two large blows in quick succession: the collapse of the family office Archegos Capital Management and the failure of supply-chain finance firm Greensill Capital, whose paper sat inside Credit Suisse investment funds. In October 2021 it also settled the long-running Mozambique "tuna bonds" corruption case with US, UK, and Swiss authorities.

Each episode chipped away at the franchise. A bank's most fragile asset is trust, and Credit Suisse spent years burning through it. By late 2022 the question was no longer whether the bank had problems but whether clients would keep their money there.

What Happened

The slow erosion turned into a run. In the fourth quarter of 2022, Credit Suisse reported net asset outflows of more than CHF 110 billion as wealthy clients pulled deposits, with roughly two-thirds of the flight concentrated in October after social-media rumors about the bank's health. The bank reported a full-year 2022 net loss of about CHF 7.3 billion.

The acute phase ran over ten days in March 2023:

• March 10, 2023: Silicon Valley Bank fails in the United States, the largest US bank failure since 2008, putting global markets on edge about bank balance sheets.
• March 14, 2023: Credit Suisse discloses "material weaknesses" in its financial reporting controls and says client outflows had not yet reversed.
• March 15, 2023: Ammar Al Khudairy, chairman of top shareholder Saudi National Bank, tells Bloomberg the bank would not add capital, saying "the answer is absolutely not." Credit Suisse shares fall by as much as 30 percent that day.
• March 16, 2023: Credit Suisse announces it will borrow up to CHF 50 billion from the Swiss National Bank under a covered loan facility and a short-term liquidity facility to shore up its position.
• March 19, 2023: Swiss authorities broker an emergency takeover. UBS agrees to acquire Credit Suisse for about CHF 3 billion in an all-share deal. FINMA orders a complete write-down of the bank's Additional Tier 1 bonds.

The CHF 50 billion liquidity line did not stop the bleeding. By the weekend of March 18-19, with deposits still leaving and the share price battered, the Swiss government, FINMA, and the Swiss National Bank pushed UBS and Credit Suisse into a deal before markets reopened. Swiss Finance Minister Karin Keller-Sutter informed Credit Suisse it was to merge with UBS by Sunday evening.

Under the terms, Credit Suisse shareholders received one UBS share for every 22.48 Credit Suisse shares they held, worth about CHF 0.76 per share, for total consideration near CHF 3 billion. UBS Chairman Colm Kelleher described the transaction plainly: "as far as Credit Suisse is concerned, this is an emergency rescue."

Why It Happened

Credit Suisse did not fail from one bad trade. It failed from a steady accumulation of losses, fines, and management chaos that slowly convinced clients the bank could not be trusted with their money. When confidence breaks at a bank that funds itself with deposits, the funding can leave faster than any balance sheet can absorb.

Start with the self-inflicted wounds. The Archegos default in 2021 cost Credit Suisse about $5.5 billion, by far the largest loss any bank took from that blowup, and an independent review blamed a "fundamental failure of management and controls." The same year, the bank had to freeze and wind down about $10 billion of supply-chain finance funds tied to Greensill Capital after Greensill lost its credit insurance and collapsed, leaving Credit Suisse clients facing losses and litigation. The Mozambique tuna-bonds case, settled for about $475 million in October 2021, showed the same pattern of weak controls in a different decade.

These were not isolated accidents. They pointed to a risk culture that repeatedly took on exposures it did not understand or police. Each scandal forced restructurings, executive exits, and capital raises, which in turn unsettled the clients whose deposits funded the bank. The 2019 spying affair and the revolving door of chief executives signaled instability at the top.

By late 2022 the deposit base had become unstable, and a bank with fleeing deposits is one shock away from a liquidity crisis. The shocks arrived in March 2023. The US failure of Silicon Valley Bank made every investor reassess which banks were weak, and the spotlight fell on the most visibly troubled large bank in Europe. The Saudi National Bank chairman's blunt refusal to add capital then removed the last prop of confidence. The FSB later classed it as the failure of a global systemically important bank, the most significant since 2008.

The final twist was structural. To make the rescue work, Swiss regulators relied on a clause in Credit Suisse's Additional Tier 1 (AT1) bonds. AT1 instruments, also called contingent convertible or "CoCo" bonds, are designed to absorb losses and convert to equity or be written down if a bank hits trouble. FINMA judged that the extraordinary government support triggered exactly such a "viability event," letting it write the AT1 bonds to zero.

By the Numbers

• Founded: 1856, making the bank about 167 years old at its 2023 failure. (Bloomberg; contemporaneous reporting)
• Archegos loss (2021): about $5.5 billion, the largest of any bank exposed to the family office. (Contemporaneous reporting)
• Greensill funds frozen (2021): about $10 billion of supply-chain finance funds wound down. (Contemporaneous reporting)
• Mozambique "tuna bonds" settlement (October 2021): about $475 million to US, UK, and Swiss authorities, plus a roughly $200 million debt write-off for Mozambique. (Contemporaneous reporting)
• Q4 2022 net asset outflows: more than CHF 110 billion as clients pulled funds. (Contemporaneous reporting)
• Full-year 2022 net loss: about CHF 7.3 billion. (Contemporaneous reporting)
• March 15, 2023 share drop: as much as 30 percent after the Saudi National Bank comment. (CNBC; Bloomberg)
• SNB liquidity line (March 16): up to CHF 50 billion under a covered loan and short-term facility. (Lenz & Staehelin; contemporaneous reporting)
• Acquisition price (March 19): about CHF 3 billion in stock, at a ratio of 1 UBS share per 22.48 Credit Suisse shares, around CHF 0.76 per share. (UBS news release; FINMA)
• AT1 write-down: about CHF 16 billion of Additional Tier 1 bonds (nominal value later stated as approximately CHF 16.5 billion) written to zero. (FINMA; Swiss Federal Administrative Court)
• SNB and government support: liquidity assistance and federal guarantees together running into the hundreds of billions of francs, including a public liquidity backstop covered by a federal default guarantee and a CHF 9 billion federal loss guarantee to UBS. (SNB press release; Lenz & Staehelin; contemporaneous reporting)

Aftermath

The rescue closed quickly. UBS completed the takeover in June 2023, creating a combined wealth manager with more than $5 trillion in invested assets and ending Credit Suisse as an independent institution after 167 years. By August 2023 UBS announced it was voluntarily ending the federal loss-protection guarantee and the public liquidity backstop, and that Credit Suisse had repaid its emergency liquidity assistance loan to the Swiss National Bank.

The most contested piece was the AT1 wipeout. Writing about CHF 16 billion of AT1 bonds to zero while shareholders still received roughly CHF 3 billion inverted the order investors normally expect, in which bondholders rank ahead of shareholders when a company fails. Bondholders argued the hierarchy had been upended and filed a wave of lawsuits and arbitration claims against Switzerland and FINMA.

Those challenges reached a milestone on October 1, 2025, when the Swiss Federal Administrative Court ruled FINMA's write-off order unlawful. The court found the contractual "viability event" had not been met because Credit Suisse "was sufficiently capitalised and met regulatory capital requirements" at the time, and that the legal basis FINMA cited was too vague to support the order. It revoked the decree on behalf of roughly 3,000 complainants. FINMA said it would appeal to the Federal Supreme Court, so the matter was not finally settled.

The episode also reshaped policy debate. Swiss authorities and international bodies including the FSB and the Basel Committee reviewed why a global systemically important bank could not be wound down through the formal resolution framework built after 2008, and instead needed a state-brokered merger. The collapse became a live example of "too big to fail" rules colliding with a real crisis.

Lessons for Investors

1. Trust is the real balance sheet of a bank. Credit Suisse stayed solvent on paper into March 2023, yet it failed because clients stopped believing in it and pulled more than CHF 110 billion. When you assess any deposit-funded institution, weigh its reputation and the stability of its funding as heavily as its capital ratio.

2. Repeat scandals are a pattern, not bad luck. The Archegos loss, the Greensill freeze, the tuna-bonds case, and the spying affair were different events with the same root: weak risk controls. A long string of "one-off" problems at one firm usually signals a culture issue that will keep producing losses.

3. Know where your claim sits in the hierarchy, and that it can be challenged. AT1 bondholders thought they ranked above shareholders, then watched their bonds go to zero while equity kept value. Even a contractual write-down clause was later ruled unlawful. Read the loss-absorption terms of any hybrid security before you buy it, and price the risk that the rules bend in a crisis.

4. Contagion does not respect borders or business models. A US regional bank failure in March 2023 helped topple a Swiss global bank with a very different balance sheet, because fear spread faster than facts. In a panic, markets sell the weakest visible name, so a firm's own numbers may matter less than the company it keeps in a headline.

5. A rescue is not a reward for holders. UBS shareholders got an institution at a deep discount, but Credit Suisse holders were nearly wiped out and AT1 owners fully so. A government-brokered bailout is designed to protect the financial system, not the existing investors. Never hold a troubled bank on the assumption that a rescue will make you whole.

Frequently Asked Questions

What was the Credit Suisse collapse in simple terms? The Credit Suisse collapse was the March 2023 emergency rescue of a 167-year-old Swiss bank after years of scandals and losses drained client confidence. Swiss authorities pushed rival UBS to buy it for about CHF 3 billion in stock.

Why did Credit Suisse collapse? Repeated scandals and losses, including the $5.5 billion Archegos hit, the Greensill fund freeze, and the Mozambique tuna-bonds case, slowly destroyed trust in the bank. By late 2022 clients were pulling deposits, and in March 2023 the US Silicon Valley Bank failure plus a major shareholder refusing more capital turned that into a fatal run.

How much money was involved in the Credit Suisse collapse? UBS bought Credit Suisse for about CHF 3 billion in stock, the Swiss National Bank pledged liquidity support running into the hundreds of billions of francs, and regulators wrote about CHF 16 billion of Additional Tier 1 bonds down to zero. The bank had also lost about CHF 7.3 billion in 2022 and seen more than CHF 110 billion of client funds leave in a single quarter.

Could a Credit Suisse-style collapse happen again today? Yes. The episode showed that a large, technically solvent bank can still fail in days if confidence breaks and deposits run, and the speed of digital money movement has not slowed. Regulators are reviewing why the formal resolution framework was not used, but the underlying risk of a confidence-driven run remains.

What is the main lesson from the Credit Suisse collapse? A bank lives or dies on trust, and once clients stop believing in it, no capital ratio can save it. Stable funding and a clean risk record matter more to survival than the assets a bank holds at any single moment.

Sources

1. FINMA. Press release: FINMA approves merger of UBS and Credit Suisse. March 19, 2023. https://www.finma.ch/en/news/2023/03/20230319-mm-cs-ubs/
2. Swiss National Bank. Press release: SNB provides substantial liquidity assistance to support UBS takeover of Credit Suisse. March 19, 2023. https://www.snb.ch/en/publications/communication/press-releases/2023/pre_20230319_1
3. UBS Group AG. News release: UBS to acquire Credit Suisse. March 19, 2023. https://www.ubs.com/global/en/media/display-page-ndp/en-20230319-tree.html
4. Swiss Federal Administrative Court (BVGer). Media release: Unlawful write-off of AT1 capital instruments. October 1, 2025. https://www.bvger.ch/en/newsroom/media-releases/unlawful-write-off-of-at1-capital-instruments-2385
5. Financial Stability Board. 2023 Bank Failures: Preliminary lessons learnt for resolution. October 2023. https://www.fsb.org/2023/10/2023-bank-failures-preliminary-lessons-learnt-for-resolution/
6. Lenz & Staehelin. Acquisition of Credit Suisse by UBS (legal analysis). 2023. https://www.lenzstaehelin.com/news-and-insights/browse-thought-leadership-insights/insights-detail/acquisition-of-credit-suisse-by-ubs/
7. CNBC. UBS buys Credit Suisse for $3.2 billion as regulators look to shore up the global banking system. March 19, 2023. https://www.cnbc.com/2023/03/19/ubs-agrees-to-buy-credit-suisse-as-regulators-look-to-shore-up-global-banking-system.html
8. Bloomberg. Saudi National Bank Chairman Al Khudairy Resigns After Credit Suisse Comment. March 27, 2023. https://www.bloomberg.com/news/articles/2023-03-27/saudi-national-bank-chairman-resigns-after-credit-suisse-comment

Disclaimer

This article is educational content only and is not financial advice. Nothing here is a recommendation to buy, sell, or hold any security. Consult a licensed advisor before making investment decisions.