Emergency Resolution of Credit Suisse: AT1 Bond Wipe-out and UBS Takeover Mechanics

When systemic risk is extreme, regulators will override normal market processes and shareholder rights.

Swiss authorities convened Credit Suisse and UBS on Wednesday, mandated a merger before Monday market open, threatened to remove the Credit Suisse board, and prepared emergency legislation to strip shareholders of voting rights.

Why: Regulators feared that without immediate action the bank would not open Monday, triggering global contagion.

"This was not optional, a person briefed on the conversation told the Financial Times."

AT1 (Additional Tier 1) bonds are explicitly designed to absorb losses before equity under regulatory resolution.

The bond prospectus stated that regulators may cancel the notes prior to equity; the Swiss authorities exercised this clause, writing off $17.3 billion of AT1s while equity holders received UBS stock.

Why: The bonds’ high 9.75% coupon compensated investors for precisely this tail risk.

"It's right there in their name. 7% CET1 trigger write-down AT1 bonds."

Protecting bondholders from losses eliminates the economic justification for credit spreads.

Post-2008 regulators wanted risk transferred from taxpayers to bondholders; the Credit Suisse case marks the first large-scale test of this principle.

Why: If losses are socialized, investors have no incentive to price risk correctly.

"If bondholders can never be allowed to lose, it leads to the question, why do they get paid a credit spread if there is no actual risk of loss?"

Regulatory actions in one jurisdiction instantly reprice similar instruments globally.

European AT1 bonds sold off 2–10 points after the Swiss write-down, and the ECB, EBA, BoE all issued statements that they would not follow the Swiss model.

Why: Investors reassess the probability of comparable interventions elsewhere.

"81 bonds issued by other European banks sold off sharply after the announcement."

Deposit flight accelerates exponentially once confidence is lost.

Credit Suisse suffered more than $10 billion of daily withdrawals last week, compounding outflows that began in Q4 2022 after social-media bankruptcy rumors.

Why: Modern bank runs are driven by instantaneous digital transfers and social amplification.

"More than $10 billion of wealthy clients' money was being pulled out of Credit Suisse every day."

In crisis mergers, the acquirer dictates terms and extracts maximum indemnities.

UBS insisted the deal be cheaply priced, demanded a CHF 100 billion liquidity line, a CHF 9 billion government loss guarantee, and indemnity from Credit Suisse’s legal liabilities.

Why: Regulators’ urgency to close before Monday eliminated competition and bargaining power of the target.

"UBS was clear from the very start that they would only participate in the deal if it was cheaply priced and if UBS could be indemnified from any of the legal issues that Credit Suisse was potentially facing."

AT1 instruments align employee incentives with long-term solvency by paying bonuses in loss-absorbing bonds.

Credit Suisse paid a significant portion of banker bonuses in AT1 bonds that vested over several years, exposing staff to the same wipe-out risk as external investors.

Why: Reduces excessive risk-taking by making insiders bear downside.

"Credit Suisse paid a significant portion of bankers' bonuses in this type of bond, tying the money up for a number of years before it vested."

A merged entity can dwarf the host economy, creating new too-big-to-fail dynamics.

The combined UBS-Credit Suisse balance sheet equals roughly twice Swiss GDP, granting the new bank even greater systemic importance.

Why: Domestic regulators may struggle to resolve a bank whose failure would bankrupt the sovereign.

"The combined bank that will result from this transaction will be huge for Switzerland. Its assets come to roughly twice the size of the Swiss economy."