UPDATE 1-South African stocks in demand after Zuma quits

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JOHANNESBURG, Feb 15 (Reuters) - South African main stock market index jumped nearly 4 percent on Thursday, putting it on track for its biggest one-day gain in more than two years as investors welcomed the resignation Jacob Zuma as president.

Zuma quit late on Wednesday, reluctantly heeding orders by the ruling African National Congress (ANC) to bring an end to a nine-year tenure punctuated by scandals, stagnant economic growth and policy uncertainty.

The blue chip Top-40 index surged 3.6 percent, on course for its biggest one-day gain since September 2015. The broader All-share index was up 3.3 percent at 59,317.

"The big news is that Zuma has now resigned and that has created a lot of euphoria... South African incorporated, banks, retailers and the like are all looking sharply better as a result," said Independent Securities' trader Ryan Woods.

Deputy president Cyril Ramaphosa is expected to replace Zuma as president later on Thursday.

Ramaphosa, a former chairman of Africa's biggest telecoms operator MTN Group, is seen by business leaders and investors as well placed to turn around an economy. South Africas GDP is estimated to grow by less than one percent this year.

The rand currency also advanced, extending gains for a second straight day to levels last seen nearly three years ago.

The currency has been rising since December on signs that Zuma - under whose tenure Africa's most advanced economy has hardly expanded - could be ousted.

At 0951 GMT, the rand was at 11.6225 against the dollar, 0.8 percent stronger that its New York overnight close and at levels last seen in March 2015.

"The removal of President Zuma is the end of the beginning, not the beginning of the end," NKC African Economics said in a note.

"Financial markets, investors and business owners are not going to be distracted by the early removal of yet another sitting president for much longer and the attention will turn to what the new order intends to do and when it will do it." (Reporting by Tiisetso Motsoeneng; Editing by Biju Dwarakanath/Keith Weir)