Bond purchases are commonly related to quantitative easing (QE), in which central banks freely create reserves on their balance sheet and use those new reserves to buy securities on the open market, injecting money into the system.
The BOE has made it clear that the action is only temporary and primarily intended to restore orderly conditions, even though its most recent promise to buy unlimited long-duration bonds appears to be a new round of QE. Once the market has stabilized, it has committed to reverse the purchases.
The Dollar Index (DXY) fell last week after reaching a new 20-year high over 114.50 as a result of a robust rebound in the euro and pound. Given that the euro accounts for over 55% and the pound for over 10% of the DXY weighted, any further recovery in either currency could have a short-term impact on the index’s direction.