LONDON (Dow Jones) -- Barclays Capital's European head of collateralised debt obligations, Edward Cahill, resigned this week after high-profile losses at several vehicles his group had arranged, a person familiar with the matter said Thursday.

During the past several days, two structured investment vehicles that Barclays Capital, the investment-banking unit of Barclays, helped put together have collapsed, while two others may have to wind down after having trouble raising short-term funding.