White Mountains tops up buyback programme to $1bn

The board of insurance holding company White Mountains has
authorised an additional share repurchase programme of 1 million
shares, it announced today (26 February).
This is in addition to around 407,000 shares remaining under the
company's current repurchase authorisation, bringing the total
buyback potential to $1.07bn at the current share price.
With common shareholder equity of $3.9bn at year-end 2015, the
buyback authorisation gives management the opportunity to
significantly shrink the com