A specialist trader works at the post where BlackRock is traded on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., July 21, 2022. REUTERS/Brendan McDermid 

A man walks past an exchange bureau advertisement showing images of the U.S dollar in Cairo, Egypt, Feburary 21, 2016. The Egyptian pound held steady against the dollar at an official foreign currency auction on Sunday and on the black market, with traders limiting their transactions to regular clients after the central bank began cracking down on unofficial trading. REUTERS/Mohamed Abd El Ghany 

A boy walks past an exchange bureau advertisement showing images of the U.S dollar in Cairo, Egypt, Feburary 21, 2016. The Egyptian pound held steady against the dollar at an official foreign currency auction on Sunday and on the black market, with traders limiting their transactions to regular clients after the central bank began cracking down on unofficial trading. REUTERS/Mohamed Abd El Ghany 

A man walks past an exchange bureau advertisement showing images of the U.S dollar in Cairo, Egypt, Feburary 21, 2016. The Egyptian pound held steady against the dollar at an official foreign currency auction on Sunday and on the black market, with traders limiting their transactions to regular clients after the central bank began cracking down on unofficial trading. REUTERS/Mohamed Abd El Ghany 

A currency dealer works at a dealing room of a bank in Seoul, South Korea, August 25, 2015. China stocks slumped about 4 percent on Tuesday, touching eight-month lows, as investors dumped shares after a grim "Black Monday" that battered global markets but failed to prompt fresh rescue measures from Beijing. REUTERS/Kim Hong-Ji 

A currency dealer works in front of electronic boards showing the Korea Composite Stock Price Index (KOSPI) (R), and the exchange rates between the Chinese yuan and South Korean won (L), at a dealing room of a bank in Seoul, South Korea, August 25, 2015. China stocks slumped about 4 percent on Tuesday, touching eight-month lows, as investors dumped shares after a grim "Black Monday" that battered global markets but failed to prompt fresh rescue measures from Beijing. REUTERS/Kim Hong-Ji 

A currency dealer works in front of electronic boards showing the Korea Composite Stock Price Index (KOSPI) (C), the exchange rates between the Chinese yuan and South Korean won (L), and tthe exchange rate between U.S. dollar and South Korean won (R), at a dealing room of a bank in Seoul, South Korea, August 25, 2015. China stocks slumped about 4 percent on Tuesday, touching eight-month lows, as investors dumped shares after a grim "Black Monday" that battered global markets but failed to prompt fresh rescue measures from Beijing. REUTERS/Kim Hong-Ji 

Traders gather for the IPO of Black Knight Financial Services, Inc. on the floor of the New York Stock Exchange May 20, 2015. Shares of Black Knight Financial Services Inc, a provider of software and services to the mortgage industry, rose as much as 8.7 percent in their market debut, valuing the company at about $4 billion. REUTERS/Brendan McDermid

Traders gather for the IPO of Black Knight Financial Services, Inc. on the floor of the New York Stock Exchange May 20, 2015. Shares of Black Knight Financial Services Inc, a provider of software and services to the mortgage industry, rose as much as 8.7 percent in their market debut, valuing the company at about $4 billion. REUTERS/Brendan McDermid

Traders gather for the IPO of Black Knight Financial Services, Inc. on the floor of the New York Stock Exchange May 20, 2015. Shares of Black Knight Financial Services Inc, a provider of software and services to the mortgage industry, rose as much as 8.7 percent in their market debut, valuing the company at about $4 billion. REUTERS/Brendan McDermid

Traders gather for the IPO of Black Knight Financial Services, Inc. on the floor of the New York Stock Exchange May 20, 2015. Shares of Black Knight Financial Services Inc, a provider of software and services to the mortgage industry, rose as much as 8.7 percent in their market debut, valuing the company at about $4 billion. REUTERS/Brendan McDermid

Traders work at the Egyptian stock exchange in Cairo, November 19, 2014. The Egyptian pound was flat at a central bank dollar sale on Wednesday but weakened significantly on the black market as Egypt's plans to repay a $2.5 billion Qatari deposit raised concerns of a looming dollar shortage, traders said. REUTERS/Mohamed Abd El Ghany (EGYPT - Tags: BUSINESS) 

Traders work at the Egyptian stock exchange in Cairo, November 19, 2014. The Egyptian pound was flat at a central bank dollar sale on Wednesday but weakened significantly on the black market as Egypt's plans to repay a $2.5 billion Qatari deposit raised concerns of a looming dollar shortage, traders said. REUTERS/Mohamed Abd El Ghany (EGYPT - Tags: BUSINESS) 

Traders work at the Egyptian stock exchange in Cairo, November 19, 2014. The Egyptian pound was flat at a central bank dollar sale on Wednesday but weakened significantly on the black market as Egypt's plans to repay a $2.5 billion Qatari deposit raised concerns of a looming dollar shortage, traders said. REUTERS/Mohamed Abd El Ghany (EGYPT - Tags: BUSINESS) 

A trader works at the Egyptian stock exchange in Cairo November 19, 2014. The Egyptian pound was flat at a central bank dollar sale on Wednesday but weakened significantly on the black market as Egypt's plans to repay a $2.5 billion Qatari deposit raised concerns of a looming dollar shortage, traders said. REUTERS/Mohamed Abd El Ghany (EGYPT - Tags: BUSINESS) 

A trader works at the Egyptian stock exchange in Cairo, November 19, 2014. The Egyptian pound was flat at a central bank dollar sale on Wednesday but weakened significantly on the black market as Egypt's plans to repay a $2.5 billion Qatari deposit raised concerns of a looming dollar shortage, traders said. REUTERS/Mohamed Abd El Ghany (EGYPT - Tags: BUSINESS) 

Traders work at the Egyptian stock exchange in Cairo, November 19, 2014. The Egyptian pound was flat at a central bank dollar sale on Wednesday but weakened significantly on the black market as Egypt's plans to repay a $2.5 billion Qatari deposit raised concerns of a looming dollar shortage, traders said. REUTERS/Mohamed Abd El Ghany (EGYPT - Tags: BUSINESS) 

A man (R) counts banknotes to purchase the newly released iPhone 6, outside an Apple store in Hong Kong September 19, 2014. According to the people buying the phones outside the store, they are planning to sell their newly purchased phones in mainland China. REUTERS/Tyrone Siu (CHINA - Tags: BUSINESS SOCIETY SCIENCE TECHNOLOGY TELECOMS) 

A man (L) who has just bought an iPhone 6 from an Apple store, resells the newly released smart phone to another man outside the store in Hong Kong September 19, 2014. According to the people buying the phones outside the store, they are planning to sell their newly purchased phones in mainland China. REUTERS/Tyrone Siu (CHINA - Tags: BUSINESS SOCIETY SCIENCE TECHNOLOGY TELECOMS) 

An Argentine 100 pesos bank (above) note, featuring an image of former first lady Eva Peron, is displayed next to a U.S. 100 dollar note in Buenos Aires September 17, 2014. Argentina's peso tumbled 1.87 percent on the black market to hit a record low of 15 per dollar on Wednesday in light trading, traders said. The peso has tanked more than 15 percent since the government defaulted on its debt on July 31, crashing through a succession of historic lows as Argentine businesses and savers seek refuge in dollars. REUTERS/Enrique Marcarian (ARGENTINA - Tags: BUSINESS POLITICS) 

A trader works on the floor of the stock exchange in Cairo, May 29, 2014. Abdel Fattah al-Sisi, the general who toppled Egypt's first freely elected leader, took more than 90 percent of the vote in a presidential election, provisional results showed on Thursday, joining a long line of leaders drawn from the military. The stock market, which fell 2.3 percent on Wednesday as some players said the turnout was a disappointment, was down two percent by midday on Thursday. On the black market, the Egyptian pound weakened slightly. REUTERS/Amr Abdallah Dalsh (EGYPT - Tags: POLITICS ELECTIONS CIVIL UNREST BUSINESS) 

Traders works on the floor of the stock exchange in Cairo, May 29, 2014. Abdel Fattah al-Sisi, the general who toppled Egypt's first freely elected leader, took more than 90 percent of the vote in a presidential election, provisional results showed on Thursday, joining a long line of leaders drawn from the military. The stock market, which fell 2.3 percent on Wednesday as some players said the turnout was a disappointment, was down two percent by midday on Thursday. On the black market, the Egyptian pound weakened slightly. REUTERS/Amr Abdallah Dalsh (EGYPT - Tags: POLITICS ELECTIONS CIVIL UNREST BUSINESS) 

A trader works on the floor of the stock exchange in Cairo, May 29, 2014. Abdel Fattah al-Sisi, the general who toppled Egypt's first freely elected leader, took more than 90 percent of the vote in a presidential election, provisional results showed on Thursday, joining a long line of leaders drawn from the military. The stock market, which fell 2.3 percent on Wednesday as some players said the turnout was a disappointment, was down two percent by midday on Thursday. On the black market, the Egyptian pound weakened slightly. REUTERS/Amr Abdallah Dalsh (EGYPT - Tags: POLITICS ELECTIONS CIVIL UNREST BUSINESS) 

Traders talk on the floor of the stock exchange in Cairo, May 29, 2014. Abdel Fattah al-Sisi, the general who toppled Egypt's first freely elected leader, took more than 90 percent of the vote in a presidential election, provisional results showed on Thursday, joining a long line of leaders drawn from the military. The stock market, which fell 2.3 percent on Wednesday as some players said the turnout was a disappointment, was down two percent by midday on Thursday. On the black market, the Egyptian pound weakened slightly. REUTERS/Amr Abdallah Dalsh (EGYPT - Tags: CIVIL UNREST POLITICS ELECTIONS BUSINESS) 

North Korean leader Kim Il-sung is seen on this 5000 North Korea won banknote in this photo illustration taken in Shanghai May 23, 2013. Chinese currency and U.S. dollars are being used more widely than ever in North Korea instead of the country's own money. The use of dollars and Chinese yuan, or renminbi, has accelerated since a revaluation of the North Korean won in 2009 wiped out the savings of millions of people, said experts on the country, defectors and Chinese border traders. The black market exchange rate for this 5000 North Korean won banknote is equivalent to $0.65, while the official North Korean exchange rate stands at more than $65. To match Insight KOREA-NORTH/MONEY REUTERS/Carlos Barria (CHINA - Tags: POLITICS BUSINESS) 

North Korean leader Kim Il-sung is seen on this 5000 North Korea won banknote in this photo illustration taken in Shanghai May 23, 2013. Chinese currency and U.S. dollars are being used more widely than ever in North Korea instead of the country's own money. The use of dollars and Chinese yuan, or renminbi, has accelerated since a revaluation of the North Korean won in 2009 wiped out the savings of millions of people, said experts on the country, defectors and Chinese border traders. The black market exchange rate for this 5000 North Korean won banknote is equivalent to $0.65, while the official North Korean exchange rate stands at more than $65. To match Insight KOREA-NORTH/MONEY REUTERS/Carlos Barria (CHINA - Tags: POLITICS BUSINESS) 

A trader with mock chains around his wrists and a gag tied around his mouth attends a protest in New Delhi September 27, 2012. Dozens of traders protested on Thursday against the Indian government's decision to allow foreign direct investment (FDI) in the retail sector, according to a press release. REUTERS/Adnan Abidi (INDIA - Tags: CIVIL UNREST POLITICS BUSINESS) 

Weekend shoppers walk through the central vegetable and fish market in Honiara March 4, 2011. An agricultural economy and a subsistence lifestyle still persists in the Solomon Islands 33 years after independence from Britain. Women cook yellow fish and burnt-black potatoes smouldering in roadside umu pits; men weighed down with coconuts and pineapples trek to village markets. Picture taken March 4. To match Feature SOLOMONISLANDS-MINING/ REUTERS/James Regan (SOLOMON ISLANDS - Tags: BUSINESS) 

African grey parrots rescued from an illegal trader by Ugandan officials at the Uganda-Democratic Republic of Congo border crossing are seen at the Uganda Wildlife Education Centre in Entebbe, southwest of the capital Kampala January 12, 2011. Illegal trade in the parrots, which are valued between $300 and $700, has increased in recent years, according a spokeswoman for centre. Picture taken January 12, 2011 REUTERS/James Akena (UGANDA - Tags: ANIMALS CRIME LAW BUSINESS) 

An illegal gold seller examines gold stones to determine its value at a black market near Tumeremo in Venezuela's southern Bolivar state July 14, 2010. Similar to the gold rush to California in the middle of the 19th century, the zone known as the Shield of Guyana that encompasses southern Venezuela, eastern Colombia, northern Brazil and all of Guyana, Surinam and French Guyana has turned into a center for gold mining. Picture taken July 14, 2010. REUTERS/Carlos Garcia Rawlins (VENEZUELA - Tags: ENVIRONMENT SOCIETY BUSINESS) 

A vendor sells items from a U.S. military base at a junk market in Baghdad June 16, 2010. The remaining 85,000 U.S. soldiers in Iraq are pulling out over the next 18 months, and the Pentagon is getting rid of the fixtures and fittings of the bases they live in, some of it at auction, some bound for the black market. Picture taken June 16. REUTERS/Saad Shalash (IRAQ - Tags: CONFLICT) 

A woman trader holds a gas cylinder as others shout during a protest against the black marketing of cooking gas and recent price hikes in essential commodities in the northern Indian city of Allahabad August 29, 2008. REUTERS/Jitendra Prakash (INDIA) 

A man shops inside a clothing shop in central Harare May 13, 2008. Traders in Zimbabwe--which has the highest inflation rate in the world above 165,000 percent, are now selling clothes in millions and billions of Zimbabwe dollars. The Zimbabwe dollar, which had been officially pegged at 30,000 to the United States dollar before the rules were changed, traded at an average Z$165 million to the greenback. The interbank exchange rate was significantly lower than black market rates, which hovered around Z$130 million to the United States dollar. REUTERS/Philimon Bulawayo (ZIMBABWE) 

A trader ties a bundle of unprocessed tobacco in Bulawayo October 25, 2007. Zimbabwe was once the second-largest tobacco exporter in the world after Brazil, but cigarettes have now disappeared from shops, and cost at least 10 times the government's fixed price on the thriving black market, the official daily newspaper, The Herald, reported this week. REUTERS/Emmanuel Chitate (ZIMBABWE) 

Black market currency traders exchange U.S. and Zimbabwean bank notes in the capital Harare June 23, 2007. The Zimbabwe dollar, which is pegged to the U.S dollar and was effectively devalued by the central bank to 15,000 to the greenback in April, was trading in the 170,000-200,000 range on the thriving black market on Friday. REUTERS/Philimon Bulawayo (ZIMBABWE) 

A black market currency trader shows off U.S. and Zimbabwean bank notes in the capital Harare June 23, 2007. Zimbabwe's currency plunged to new depths on Friday as the U.S. ambassador to Harare predicted galloping inflation will force President Robert Mugabe from office before the end of the year. REUTERS/Philimon Bulawayo (ZIMBABWE) 

Nigerian petrol traders sail on a pirogue loaded with jerry-cans filled with petrol through the grass on Lake Chad January 27, 2007. Petrol coming from Nigeria is sold on the black market in Chad. The lake is partly covered with grass, which makes movement on the lake difficult for the pirogues and leads to congestion on this trading route between Nigeria and Chad. Picture taken January 27, 2007. REUTERS/Emmanuel Braun (CHAD) 

Nigerian petrol trader sail on a pirogue loaded with jerry-cans filled with petrol through the grass on Lake Chad January 27, 2007. Petrol coming from Nigeria is sold on the black market in Chad. The lake is partly covered with grass, which makes movement on the lake difficult for the pirogues and leads to congestion on this trading route between Nigeria and Chad. Picture taken January 27, 2007. REUTERS/Emmanuel Braun (CHAD) 

- PHOTO TAKEN 15MAY06 - A typical Black Forest Gammon is sliced by a trader in Stuttgart's famous market hall May 15, 2006. [The FIFA soccer World Cup 2006 will be held in Germany from June 9 - July 9.] 

A typical Black Forest Gammon is sliced by a trader in Stuttgart's famous market hall May 15, 2006. The FIFA soccer World Cup 2006 will be held in Germany from June 9 - July 9. WORLD CUP 2006 PREVIEW REUTERS/Michaela Rehle (GERMANY) 

A Vietnamese black pepper saleswoman waits for customers at a market in
Hanoi October 4, 2003. While traders express concern that the world's pepper
prices may fall if Vietnam, the world's largest black pepper producer and
exporter, further expands its crop, industry officials in the Southeast
Asian country say that is not its policy. The world's top producer of
robusta coffee Vietnam has been partly blamed for causing prices to drop to
30-year lows in 2002. REUTERS/Kham

CTP/FA 

A trader speaks on the phone as he sits in front of black screens in Moscow's Interbank Currency Exchange (MICEX) August 28. The shock waves from Moscow reverberated through global financial markets, fearful that a Russian meltdown will unleash a global economic downturn.

CVI/CLH/ 

An Indonesian driver collects fares from traders who used his vehicle to transport vegetables to local markets in Jakarta December 12. The man said that the traders are paying less than usual to use his service due to the economic crisis. The Indonesian rupiah crept perilously close to the 5,000-per-dollar mark on Friday, falling to a record low in the wake of another black day for regional markets. The rupiah crumbled to 4,950 to the dollar as nerves from South Korea's unfolding financial disaster spread, and dealers said there was still no bottom in sight for the currency.

INDONESIA 

A trader shouts orders in a telephone on the derivative market at the Paris stock exchange, October 28. The French blue-chip share index fell by more than 9 per cent which is the second biggest one-day fall since 1987 black monday. 

A trader holds his head as one of his colleague shouts orders on the derivative market at the Paris stock exchange, October 28. The French blue-chip share index fell by more than 9 per cent which is the second biggest one-day fall since 1987 black monday. 

A trader holds his head as he sits near a computer screen on the derivative market at the Paris stock exchange, October 28. The French blue-chip share index fell by more than 9 per cent which is the second biggest one-day fall since 1987 black monday. 

A trader gestures on the derivative market at the Paris stock exchange, October 28. The French blue-chip share index fell by more than 9 per cent which is the second biggest one-day fall since 1987 black monday. 

Traders gesture on the derivative market at the Paris stock exchange, October 28. The French blue-chip share index fell by more than 9 per cent which is the second biggest one-day fall since 1987 black monday. 

A trader holds his head as he reads a note on the derivative market at the Paris stock exchange, October 28. The French blue-chip share index fell by more than 9 per cent which is the second biggest one-day fall since 1987 black monday. 

Traders react after the Sydney Futures Exchange finished 155 points down at close of trade October 28. The Stock Exchange lost 7.2 percent of it's value, carving A$29.5 billion (US$20.6 billion) from the bourse's value. The fall was the worst ever percentage point fall since the last `Black Tuesday', October 20, 1987 when the All Ordinaries lost 25 percent. Panic selling from small investors and foreign funds was triggered by the New York stock exchange's biggest ever single-day points loss. 

A trader holds his head in his hands at the Sydney Futures Exchange October 28 after the futures market finished 155 points down at close of trade. The Stock Exchange lost 7.2 percent of it's value, carving A$29.5 billion (US$20.6 billion) from the bourse's value. The fall was the worst ever percentage point fall since the last `Black Tuesday', October 20, 1987 when the All Ordinaries lost 25 percent. Panic selling from small investors and foreign funds was triggered by the New York stock exchange's biggest ever single-day points loss. 

A trader holds his head in his hands at the Sydney Futures Exchange October 28 after the futures market finished 155 points down at close of trade. The Stock Exchange lost 7.2 percent of it's value, carving A$29.5 billion (US$20.6 billion) from the bourse's value. The fall was the worst ever percentage point fall since the last `Black Tuesday', October 20, 1987 when the All Ordinaries lost 25 percent. Panic selling from small investors and foreign funds was triggered by the New York stock exchange's biggest ever single-day points loss. 

A trader holds his head as one of his colleague shouts orders on the derivative market at the Paris stock exchange, October 28. The French blue-chip share index fell by more than 9 per cent which is the second biggest one-day fall since 1987 Black Monday.

FRANCE STOCK 

A trader holds his head as he sits near a computer screen on the derivative market at the Paris stock exchange, October 28. The French blue-chip share index fell by more than 9 per cent which is the second biggest one-day fall since 1987 Black Monday.

MARKETS 

A Trader gestures on the derivative market at the Paris stock exchange, October 28. The French blue-chip share index fell by more than 9 per cent which is the second biggest one-day fall since 1987 black monday.

FRANCE STOCK 

A trader holds his head as he reads a note on the derivative market at the Paris stock exchange, October 28. The French blue-chip share index fell by more than 9 per cent which is the second biggest one-day fall since 1987 black monday.

FRANCE STOCK 

Traders react after the Sydney Futures Exchange finished 155 points down at close of trade October 28. The Stock Exchange lost 7.2 percent of it's value, carving A$29.5 billion (US$20.6 billion) from the bourse's value. The fall was the worst ever percentage point fall since the last `Black Tuesday', October 20, 1987 when the All Ordinaries lost 25 percent. Panic selling from small investors and foreign funds was triggered by the New York stock exchange's biggest ever single-day points loss.

Have changed date to 1997 as a description of another stock exchange photo says that this fall in stock exchange happened 10 years after "Black Tuesday" Oct 20th 1987

MARKETS AUSTRALIA 

A trader holds his head in his hands at the Sydney Futures Exchange October 28 after the futures market finished 155 points down at close of trade. The Stock Exchange lost 7.2 percent of it's value, carving A$29.5 billion (US$20.6 billion) from the bourse's value. The fall was the worst ever percentage point fall since the last `Black Tuesday', October 20, 1987 when the All Ordinaries lost 25 percent. Panic selling from small investors and foreign funds was triggered by the New York stock exchange's biggest ever single-day points loss.

Have changed date to 1997 as a description of another stock exchange photo says that this fall in stock exchange happened 10 years after "Black Tuesday" Oct 20th 1987

MARKETS AUSTRALIA 

A trader holds his head in his hands at the Sydney Futures Exchange October 28 after the futures market finished 155 points down at close of trade. The Stock Exchange lost 7.2 percent of it's value, carving A$29.5 billion (US$20.6 billion) from the bourse's value. The fall was the worst ever percentage point fall since the last `Black Tuesday', October 20, 1987 when the All Ordinaries lost 25 percent. Panic selling from small investors and foreign funds was triggered by the New York stock exchange's biggest ever single-day points loss.

MARKETS AUSTRALIA 

Traders at work on the floor of the New York Stock Exchange in New York October 20 shortly before the opening bell. The Dow Jones industrial average closed down 91.85 points October 17 at 7,847.03. October 19 was the tenth anniversary of the stock market crash known as "Black Monday.

STOCKS