the bank of england said tuesday that it will expand its daily uk bond purchase operations to include indexlinked gilts the second move this week aimed at trying to calm market volatility “these additional operations will act as a further backstop to restore orderly market conditions by temporarily absorbing selling of indexlinked gilts in excess of market intermediation capacity” the boe said in a statement on tuesday adding that it has also consulted with the debt management office the inclusion of those indexlinked bonds will run from oct 11 to 14 alongside its existing daily conventional gilt purchase auctions the boe said but it remained to be seen if a secondday move by the central bank to calm markets will be effective investors are anxiously looking ahead to friday when the central bank’s emergency bondbuying program announced last month are scheduled to end the boe announced additional measures on monday to smooth that path but the yield on the 30year gilt tmbmkgb30y jumped 29 basis points to 468 on monday while that’s still below the 517 peak it indicates concerns about the imminent end to the central bank’s program were causing fear in the market the yield on the 10year gilt tmbmkgb10y  which the central bank has not been buying rose 24 basis points to 447 on monday the boe said it would boost the size of its daily gilt purchases and implement extra measures “to support an orderly end” to its emergency bondbuying plans it now will buy up to £10 billion 11 billion in bonds up from a previous auction limit of £5 billion 55 billion though sticking with its pricing policy that has seen the central bank refuse many of the bonds put up for auction the boe also said monday that it plans to to launch a temporary expanded collateral repo operation for liabilitydriven investment funds through liquidity insurance operations which will run beyond the end of this week ldi funds are a popular product sold by asset managers like blackrock blk  legal  general lgen and schroders sdr to pension funds using derivatives to help them match assets and liabilities so there is no risk of shortfall in money to pay pensioners but those measures failed to stop bond yields from surging amid market fears that the pension fund market is not yet ready for that temporary debt purchase program to end