The S&P/ASX 200 Index (ASX: XJO) is having another day to forget on Thursday. At the time of writing, the benchmark index is down 1.5% to 7,813 points.

Four ASX shares that are falling more than most today are listed below. Here's why they are dropping:

ANZ Group Holdings Ltd (ASX: ANZ)

The ANZ Group share price is down 2.5% to $28.91. The catalyst for this is news that the big four bank has entered into a court-enforceable undertaking (EU) with the Australian Prudential Regulation Authority (APRA). This is in relation to shortcomings in its non-financial risk management practices and culture. As part of the undertaking, ANZ will carry an additional $250 million operational risk capital overlay. This is the equivalent to 5 basis points of its Common Equity Tier 1 capital. ANZ Chairman Paul O'Sullivan said: "We are disappointed that we have not met APRA's expectations about how the bank manages non-financial risk and its non-financial risk culture. A strong non-financial risk regime is critical to protecting our bank and our customers."

Breville Group Ltd (ASX: BRG)

The Breville share price is down 6% to $29.79. Investors have been selling the appliance manufacturer's shares after US President Donald Trump unveiled his tariffs on imports. There may be concerns that Breville will have to increase prices to maintain its margins, which could put pressure on sales in the US market.

Cettire Ltd (ASX: CTT)

The Cettire share price is down 12% to 70 cents. This has also been driven by Donald Trump's tariff announcement. Cettire looks set to be among the most impacted ASX shares from the changes. It notes that approximately 41% of its total gross sales in the first half of FY 2025 related to goods manufactured in the European Union and sold to customers located in the United States. It advised: "The Company notes that changes to US tariffs on overseas imports will likely impact the majority of online and bricks and mortar luxury retailers, as a significant proportion of luxury items are manufactured in the EU."

Treasury Wine Estates Ltd (ASX: TWE)

The Treasury Wine share price is down 1.5% to $8.95. This appears to have been driven by a broker note out of Citi this morning. According to the note, the broker has downgraded the wine giant's shares to a neutral rating with a reduced price target of $10.50. This follows the release of wine sales data that in the Americas which was below expectations. Though, it concedes that this could be offset by better than expected synergies from the DAOU acquisition.