Soros had been building a huge position in pounds sterling for months leading up to September 1992. Soros had recognized the unfavorable position of the United Kingdom in the European Exchange Rate Mechanism. About the book: https://www.amazon.com/gp/product/1586482785/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=1586482785&linkCode=as2&tag=tra0c7-20&linkId=3754bcbc6cdc5b55feb8f21a6b662402
For Soros, the rate at which the United Kingdom was brought into the European Exchange Rate Mechanism was too high, their inflation was also much too high (triple the German rate), and British interest rates were hurting their asset prices.
On September 16, 1992, Black Wednesday, Soros's fund sold short more than $10 billion in pounds, profiting from the UK government's reluctance to either raise its interest rates to levels comparable to those of other European Exchange Rate Mechanism countries or to float its currency.
Finally, the UK withdrew from the European Exchange Rate Mechanism, devaluing the pound. Soros's profit on the bet was estimated at over $1 billion. He was dubbed "the man who broke the Bank of England". The estimated cost of Black Wednesday to the UK Treasury was £3.4 billion.
On October 26, 1992, The Times quoted Soros as saying: "Our total position by Black Wednesday had to be worth almost $10 billion. We planned to sell more than that. In fact, when Norman Lamont said just before the devaluation that he would borrow nearly $15 billion to defend sterling, we were amused because that was about how much we wanted to sell."
Stanley Druckenmiller, who traded under Soros, originally saw the weakness in the pound. "Soros's contribution was pushing him to take a gigantic position."
In 1997, during the Asian financial crisis, the prime minister of Malaysia, Mahathir bin Mohamad, accused Soros of using the wealth under his control to punish the Association of Southeast Asian Nations (ASEAN) for welcoming Myanmar as a member. Following on a history of antisemitic remarks, Mahathir made specific reference to Soros's Jewish background ("It is a Jew who triggered the currency plunge") and implied Soros was orchestrating the crash as part of a larger Jewish conspiracy. Nine years later, in 2006, Mahathir met with Soros and afterward stated that he accepted that Soros had not been responsible for the crisis. In 1998's The Crisis of Global Capitalism: Open Society Endangered Soros explained his role in the crisis as follows:
The financial crisis that originated in Thailand in 1997 was particularly unnerving because of its scope and severity.... By the beginning of 1997, it was clear to Soros Fund Management that the discrepancy between the trade account and the capital account was becoming untenable. We sold short the Thai baht and the Malaysian ringgit early in 1997 with maturities ranging from six months to a year. (That is, we entered into contracts to deliver at future dates Thai baht and Malaysian ringgit that we did not currently hold.) Subsequently Prime Minister Mahathir of Malaysia accused me of causing the crisis, a wholly unfounded accusation. We were not sellers of the currency during or several months before the crisis; on the contrary, we were buyers when the currencies began to decline—we were purchasing ringgits to realize the profits on our earlier speculation. (Much too soon, as it turned out. We left most of the potential gain on the table because we were afraid that Mahathir would impose capital controls. He did so, but much later.)
In 1999, economist Paul Krugman was critical of Soros's effect on financial markets.
"[N]obody who has read a business magazine in the last few years can be unaware that these days there really are investors who not only move money in anticipation of a currency crisis, but actually do their best to trigger that crisis for fun and profit. These new actors on the scene do not yet have a standard name; my proposed term is 'Soroi'."
In an interview regarding the late-2000s recession, Soros referred to it as the most serious crisis since the 1930s. According to Soros, market fundamentalism with its assumption that markets will correct themselves with no need for government intervention in financial affairs has been "some kind of an ideological excess". In Soros's view, the markets' moods—a "mood" of the markets being a prevailing bias or optimism/pessimism with which the markets look at reality—"actually can reinforce themselves so that there are these initially self-reinforcing but eventually unsustainable and self-defeating boom/bust sequences or bubbles."
In reaction to the late-2000s recession, he founded the Institute for New Economic Thinking in October 2009. This is a think tank composed of international economic, business, and financial experts, mandated to investigate radical new approaches to organizing the international economic and financial system.