HONG KONG/LONDON: Donald Trump’s plans for a US construction boom have set off a chain reaction that’s invigorated commodities prices, hammered bonds, buttressed the dollar and is now ripping into emerging markets.

Copper extended the biggest weekly advance in at least three decades in London. That’s boosting the outlook for inflation, causing the rout in bonds to deepen in Europe after more than $1 trillion was erased from the value of global debt market. Higher Treasury yields are spurring the Bloomberg Dollar Spot Index toward its best week since May 2015, leading to the worst three-day sell-off in five years for developing-world currencies, which caused central banks to intervene. European stocks pared their best weekly jump since July and S&P 500 Index futures fell.

The dollar’s rally since Trump’s surprise win in Tuesday’s vote is causing turmoil in emerging markets, prompting Malaysia’s central bank to say it may act at times of extreme volatility, while India and Indonesia were said to have supported their currencies on Friday. While metals have rallied on pledges to boost construction of roads, airports and bridges, vows to renegotiate the North Atlantic Treaty Agreement and talk of tariffs on China have weighed on the outlook for developing economies.

“It’s a cascade of events,” said Per Hammarlund, the chief emerging-market strategist at SEB SA in Stockholm. “It’s a big risk-off event for emerging markets. The green shoots, primarily faster growth, that we have seen this year are at risk if Trump tears up NAFTA and slaps punitive tariffs on China. Those policies will cause inflation and US interest rates to rise, which in turn will pull capital out of emerging markets.”

Commodities

Traders are buying copper like never before in what Citigroup Inc. says may be a premature rally driven partly by Chinese speculators. The metal is poised for a 19 per cent gain this week, the biggest advance since records begin in 1986. Prices rose 6 per cent to $5,934 a metric ton at 6am in New York. Nickel was on track for a weekly gain of 14 per cent, the biggest in more than seven years.

Gold fell as the dollar rose amid increasing speculation the US economy will improve and interest rates will increase. Bullion for immediate delivery has fallen 3.7 per cent this week to $1,257.19 an ounce, confounding predictions that a Trump presidency would create a powerful rationale for investing in the haven.

Oil was back where it started the week as swings driven by US offset doubts about whether Opec can finalise the Algiers deal to cut production. West Texas Intermediate dropped 0.7 per cent Friday to $44.36 a barrel and Brent lost 0.3 per cent to $45.69.

Bonds

European government bonds extended their sell-off Friday. Benchmark German 10-year bunds declined for a fifth consecutive day, pushing the yield to the highest since February. Italy’s 10-year bond yield climbed above 2 per cent for the first time since September 2015.

The yield on similar-maturity UK gilts climbed to 1.42 per cent, the highest since before the nation’s vote to leave the European Union.

Yields on US 30-year bonds, which are more sensitive than shorter maturities to the outlook for inflation, have jumped almost 40 basis points since last Friday and a $15 billion auction of the tenor on Thursday showed waning appetite for the securities. The Bloomberg Barclays US. Treasury Index slid 1.85 per cent this week, its biggest loss since 2009. Treasury markets are closed today.

The capitalisation of a global bond market index slid by $450 billion Thursday, a fourth day of declines that pushed the week’s total above $1 trillion for only the second time in two decades, Bank of America Merrill Lynch data show. Global stocks gained $1.3 trillion in the same period.

Currencies

The MSCI Emerging Markets Currency Index fell 0.7 per cent and is down 2.5 per cent in three days. Mexico’s peso has led declines, sinking 12 per cent since Tuesday, followed by an 8 per cent drop in South Africa’s rand and 6.6 per cent slide in Brazil’s real.

In Asia, Indonesia’s rupiah and South Korea’s won sank to their weakest levels in more than four months and Malaysia’s ringgit dropped to the lowest level since January.

“Rising US yields will cause volatility in capital flows into emerging markets, and with the Fed still likely to hike rates in December, the risk is for further outflows,” said Khoon Goh, head of Asian research at Australia & New Zealand Banking Group Ltd. in Singapore, referring the Federal Reserve. Trump’s plan to revisit trade agreements “is also a factor,” he said.

On Thursday, Latin American currencies tumbled on concern Trump’s administration could usher in a host of protectionist measures. A trade war would be a blow to economies such as Mexico, which gets 80 per cent of its overseas sales from the US.

Trump’s win produced an unlikely winner in the pound, which has climbed against all 31 of its major peers this week. The euro, meanwhile, has plunged, falling 2.6 per cent against the dollar in its worst week since October 2015.

The Bloomberg Dollar Spot Index climbed 2.5 per cent this week, the best performance since May 2015.

Stocks

The MSCI Emerging Markets Index dropped 2.4 per cent and is down 5.3 per cent in three days. By contrast shares in Europe are poised for their best week since may and US stocks advanced for a fourth day on Thursday in the longest run of gains since July.

“There’s been a big rotation out of emerging markets into US dollar assets,” said Jeffrey Halley, a market strategist at Oanda Asia Pacific Pte in Singapore. “An emerging market is a market you can’t emerge from in an emergency. It’s one of the best lessons I’ve ever learnt in 30 years in the market. When everybody runs for the door at the same time, the door’s very small.”

On Friday, the Stoxx Europe 600 Index slipped 0.3 per cent as metal producers pulled back from the highest level since June 2015. The Stoxx 600 mining gauge’s relative strength index yesterday signalled the shares were the most overbought in 10 years.

S&P 500 Index futures slipped 0.5 per cent after US equities capped their longest run of gains since July. Contracts on the Dow Jones Industrial Average were little changed after the gauge closed at a record.

Walt Disney Co. climbed 1.8 per cent in premarket New York trading after predicting renewed growth next year and beyond after a rare stumble in the fiscal fourth quarter. Nvidia Corp. surged 13 per cent after the biggest maker of graphics chips used by computer gamers forecast quarterly sales that signalled continued strong demand for its signature products and gains in new markets such as data centers.

Chinese shares in Shanghai entered a bull market, with this quarter’s rally led by commodity producers and construction companies as the government boosts spending to bolster growth. Friday is Singles Day, the Chinese e-commerce event that has morphed into the biggest online shopping event in the world.

“Liquidity is abundant and property curbs will prompt more money to flow into stocks, which look undervalued relative to homes in large cities,” said Li Jingyuan, general manager at Shanghai Bingsheng Asset Management.