KARACHI/NEW YORK -  Pakistan Stock Exchange (PSX) Monday joined other major markets that have fallen after President Donald Trump's controversial ban on people from seven predominantly Muslim countries entering the United States.

The PSX on first trading day of the week tumbled below the psychological level of 49,000 points after in reaction to Trump's controversial travel ban.

The bench mark shares index fell by 991 points or (2%) to close at 48,972.24 points. Investors weigh US sanctions on Pakistan on failing to declare defunct banned outfits, brokers said. Furthermore, there were unconfirmed reports that local investors were selling due to heavy leverage positions.

Panic among market participants was further compounded following reports that local investors started to shelve down their investments due to heavy leverage positions. Fauji Fertilser Bin Qasim (FFBL) announced EPS of Re0.24/share for 2016, where the reported results remained below market expectations. As a result, the script closed at its lower price limit of 5 percent, said dealers at Topline brokerage.

Overall, volumes decreased by 35 percent to 389 million shares, while value declined by 20 percent to Rs20.3 billion/$241 million. K-Electric emerged volume leader with 54.7 million shares. Brokers said that besides the show-cause notices, the Pakistan Stock Exchange also reacted to US President Trump’s measures which caused jitters in markets across the world.

Equity markets fell across the world and the dollar slipped against the safe-haven yen after immigration curbs introduced by Trump stirred concerns about the impact of the US president's policies on global trade and the economy.

Stocks fell about 1 percent on Wall Street and Europe after Trump's executive orders on Friday to bar Syrian refugees and suspend travel to the United States from seven countries put the spotlight back on his protectionist bent.

The dollar fell against the yen as investors sought the traditional security of the Japanese currency and gold edged higher amid the heightened political uncertainty. Spot gold rose 0.73 percent to $1,197.10 an ounce, while the dollar slipped 1.03 percent to 113.87 yen.

The negative reaction to Trump's orders put Wall Street's main indexes on course for their worst day in more than three months. The CBOE Volatility index rose 16.4 percent from multi-year lows though the index, known as Wall Street's "fear gauge," only rose to a one-week high.

Investor enthusiasm over expectations of a pro-business Trump agenda, especially tax and regulatory reform, had spurred a rally on equity markets, said Rick Meckler, president of hedge fund LibertyView Capital Management LLC in Jersey City, New Jersey.

"Those two things were most important," Meckler said. "We seem totally caught up now in immigration reform and travel restrictions. Those are not things the business community is necessarily excited about."

MSCI's all-country world stock index fell 1.14 percent, while the FTSEurofirst 300 Index of leading pan-European stocks fell 0.99 percent. In Japan, the Nikkei fell 0.5 percent and Australian shares slid 0.9 percent. On Wall Street, the Dow Jones Industrial Average fell 208.23 points, or 1.04 percent, to 19,885.55. The S&P 500 lost 25.28 points, or 1.10 percent, to 2,269.41 and the Nasdaq Composite dropped 78.07 points, or 1.38 percent, to 5,582.71.

The euro slipped to an 11-day low against the dollar after German inflation data came in slightly weaker than expected and took some pressure off the European Central Bank to wind down its stimulus program. The euro fell 0.05 percent to $1.0689.

US Treasuries were little changed ahead of policy meetings of the US Federal Reserve on Tuesday and Wednesday and a heavy week of data that culminates with Friday's jobs report for January.

The Benchmark 10-year US Treasury note gained 2/32 in price to yield 2.4715 percent. Germany's 10-year yields dipped to 0.44 percent after inflation hit a 3 1/2-year high but, at 1.9 percent on the year, slightly undershot forecasts.

Oil prices fell as news of another weekly increase in US drilling activity spread concern over rising output just as many of the world's oil producers are trying to comply with a deal to pump less to try to prop up prices.

The number of active US oil rigs rose to the highest since November 2015 last week, according to Baker Hughes data, showing drillers are taking advantage of oil prices above $50 a barrel. Global benchmark Brent crude oil prices were down 37 cents at $55.15 a barrel, while US crude futures traded down 59 cents at $52.58.