Barclays shares dropped more than 3% on Monday, dragging the FTSE 100 below the 10,800 handle, after the Financial Times reported that the Bank of England's Prudential Regulation Authority was investigating how the bank classified total return swaps tied to illiquid private-credit loans.
The inquiry, which the PRA opened after an internal complaint, centres on whether Barclays assigned those derivatives to its trading book in a way that understated risk and reduced the capital it must hold against potential losses. Barclays said it takes regulatory obligations seriously and declined to comment on discussions with supervisors. The Bank of England declined to comment on the report.
What regulators are testing
Under PRA rules, banks face stricter capital treatment when derivatives reference collateral that cannot be traded quickly. The FT said complainants alleged Barclays treated exposure linked to private-credit loans as tradable because positions were hedged with matching swaps at another counterparty, even though the underlying loans were illiquid.
If supervisors conclude the bank breached rule requirements, the consequences could range from mandated remediation and higher capital buffers to fines, depending on severity and cooperation. Investors reacted before any finding by selling not only Barclays but also HSBC, Lloyds Banking Group, NatWest Group and Standard Chartered, which each fell between 2% and 3%.
Private credit meets public markets
The episode lands as private credit has become a favoured financing channel for mid-market companies that no longer access syndicated loan markets as easily as a decade ago. Banks often structure total return swaps so clients gain economic exposure without holding loans on balance sheet, but supervisors worry that complexity can mask concentration risk.
For UK shareholders, Monday's slide interrupted a short winning streak for the FTSE 100 and revived talk of a potential bank surcharge in Chancellor John Healey's 28 October budget. Treasury officials have not confirmed tax plans, but media reports that ministers are weighing higher levies on lenders added to the sector's sensitivity.
Trading desk implications
Market participants said the probe could prompt other European banks to review how they book similar swaps ahead of year-end reporting. Risk officers typically distinguish between genuine trading intent and structural positions that remain on the book for accounting benefits; regulators increasingly demand documentation proving the distinction.
Barclays closed down 3.26% in London, according to exchange data, while the broader FTSE 100 index finished 1.07% lower. Mining names including Anglo American and Glencore also declined as commodity prices eased from recent highs, compounding the drag from financials.
Analysts cautioned that the investigation may take months and that no charges have been brought. Still, the share reaction shows how quickly UK bank valuations can move when capital-rule questions surface, particularly with inflation and labour-market data due later this week.
Comparison with past trading-book cases
Regulatory lawyers compared the Barclays headlines with earlier episodes where supervisors questioned whether banks parked illiquid assets in trading books to benefit from lower risk weights. None of those historical files predict outcomes here, but they explain why equity investors sell first and read consent decrees later.
Fixed-income desks said secondary markets in private-credit swaps remained open on Monday, suggesting the probe had not frozen broader liquidity. Still, compliance teams at rival lenders were said to be running internal checks on similar structures by the close of the London session.
Credit analysts said Monday's move widened subordinated bank debt spreads slightly, though senior bonds were steadier as investors distinguished between idiosyncratic conduct risk and systemic capital shortfalls. Rating agencies made no immediate changes to outlook statements.
FTSE 100 futures traded slightly higher in early Tuesday indications as miners steadied, but bank contracts remained soft until investors see whether the PRA comments publicly. Treasury select committee members may request a closed briefing if the story persists through budget week, linking trading-book governance with wider questions about risk taking in the City.