Nairobi, Feb. 15 -- The Nairobi bourse has notched up the biggest one-week gain on record, capping off a period that left investors Sh220.24 billion richer.

Market capitalisation-the measure of investor wealth-rose by 6.9 percent to a new all-time high of Sh3.419 trillion, largely driven by large counters such as Safaricom, Equity Group, KCB Group and Stanbic Holdings.

Safaricom added Sh78 billion or 6.1 percent in valuation to Sh1.36 trillion last week, at a share price of Sh33.95.

Equity's valuation rose 13 percent or Sh33 billion, while KCB and Stanbic added 11.9 percent or Sh25.7 billion and 16.8 percent or Sh13.7 billion respectively.

This has placed the Nairobi Securities Exchange (NSE) on course to repeat last year's performanc...