These days, the Dollar and the Yen are veritable proxies for investor confidence/risk tolerance. As a result, on days when US stocks rise, the Dollar (somewhat ironically) will typically experience a decline. Over the last couple weeks, it should therefore come as no surprise that the tremendous rise in US stock prices was matched by a proportional fall in both the Dollar and the Yen. If only for technical reasons (i.e. that the scale tipped too much in the other direction), it seems investors have regained some of their comfort with investing in emerging markets, leading some of the hardest-hit currencies (Korean Won, Brazilian Real, Mexican Peso) to recover some of their gains. Call it wishful thinking, but some investors now believe that the US recession will be milder than originally forecast, which would certainly exert a positive impact on such emerging market economies. In addition, there were monetary factors underlying the currency reversal, reports The Washington Post:

There were more specific reasons for some of the fluctuations. A news report that the Bank of Japan might cut rates in the near future was a factor in driving down the yen.

Read More: Currency Swings Reverse Course

The British Pound is perhaps one of the worst victims of the credit crunch, having fallen 25% against the USD in the year-to-date. According to analysts, hedge funds deserve much of the blame. Apparently, most hedge funds, including those that are based in the UK, denominate their portfolios in terms of Dollars. As a result of the exodus away from emerging markets, such funds have found themselves awash in cash, which they have promptly converted into Dollars. The reasoning behind this investment strategy is twofold: first, as the incredible strength of the Dollar has illustrated, the prevailing wisdom among investors is that the US is currently the least risky place to invest. Second, the interest rate gap between the US and the rest of the world looks set to narrow, which means the yields on US security will become relatively attractive. The Telegraph reports:

Worldwide interest rate forecasts are being revised downward, which has increased interest in the US where rates have already been slashed.

Read More: Sterling caught up in 'currency market tsunami'

Volatility in forex markets has surged to unprecedented levels. In the words of one analyst, "Moves in the currency markets witnessed during just a few hours of trading...'are typically what we see in a quarter.' " The currencies of both emerging market countries and industrialized nations have been battered indiscriminately, as investors have fled to locations perceived as less risky, namely the US and Japan. On the one hand, a stronger Dollar has almost completely alleviated inflation in the US and will hence make it easier for the Fed to continue cutting interest rates. On the other hand, US exports, previously one of the few bright spots in the sagging economy, will become less competitive. Then there is deflation, long since relegated to history textbooks, but now once again considered a threat. Countries whose currencies have declined, meanwhile, are finding it difficult to convince investors to stay put, and have taken to deploying their forex reserves as a stopgap measure to stabilize their respective economies. The Wall Street Journal reports:

To combat these sharp moves, Brazil, Mexico, Russia, and India collectively have drawn down their reserves by more than $75 billion since the end of September, selling dollars to protect their currencies, according to Win Thin of Brown Brothers Harriman.

Read More: Currency-Price Swings Disrupt Global Markets

In a bold but perhaps necessary move, the Central Bank of Brazil recently announced an injection of $50 Billion into forex markets intended to stem the 30% fall in the value of the Brazilian Real that has taken place so far this year. Unfortunately for Brazil, the forces tugging on emerging market currencies far exceed the potential counter-efforts that such a country is capable of waging. Call it a lack of confidence, or a sudden aversion to risk. Either way, investors are fleeing regions that only months ago, they were still flocking to in droves. High interest rates, strong economic fundamentals, even capital injections and liquidity initiatives are no match for the financial tsunami. In addition, it's not as if the Brazilian economy is necessarily in a good position to emerge from the crisis unscathed, as its neighbor Argentina could soon default on its debt...again. Bloomberg News reports:

The real has sunk 31 percent from a nine-year high of 1.5545 reached on Aug. 1 as the global crisis has driven down prices on the country's commodity exports and eroded demand for higher- yielding, emerging-market assets. Only the South African rand, down 35 percent, has fallen more over that time.

Read More: Brazil to Pump $50 Billion in Currency Market to Shore Up Real

The Australian Dollar has lost nearly 1/3 of its value (relative to the USD) over the last few months, as the credit crisis continues to drive investors away from areas perceived as risky. In other words, the best (and perhaps the only reasonable) explanation for its fall has very little to do with Australian economic fundamentals. Then again, the rise in the currency that took place over the last decade was also rooted in technical and financial trends, although rising commodity prices were also a factor. The Australian Dollar (as well as the New Zealand Kiwi) was one of the prime beneficiaries of carry-trades, due to unusually "generous" interest rate levels. Now that investors are chasing stability/capital preservation instead of yield, however, the currency has seriously fallen out of favor. The Australian reports:

Equity markets would continue to drive currency markets, while being influenced by the ongoing financial crisis. "These are unprecedented times in volatility for the Australian dollar and currencies," said [one analyst].

Read More: Dollar crashes to five-year low

While the Dollar rally may ultimately prove beneficial to US consumers (due to cheaper imports), it is certainly not helping US-based multinational corporations. Companies that earn a significant portion of their revenue abroad would normally be considered stable investments during times of economic uncertainty, since their exposure to individual economies is minimal. In the context of the current crisis, however, such companies have struggled; since they must report earnings in terms of USD, a strong Dollar is equivalent to lower earnings on foreign sales. Some companies have turned to hedging their exposure, while others have opted to either ride out the fluctuations and/or hope that they cancel each other out, banking on the notion that forex is ultimately a zero-sum game. Dow Jones reports:

To be sure, such global currency fluctuations are hard to manage and even those companies that do have hedges in place may only be able to limit and not completely offset the pressures of a strengthening greenback and oscillating exchange rates.

Read More: Multinationals Turn To Hedging To Manage Rising Dollar

The G7 Industrialized Nations met today in Tokyo to discuss the credit crisis, with a focus on its impact on forex markets. The Japanese Yen, specifically, has exploded in recent weeks, as nervous investors have fled emerging markets and other risky sectors, and have unwound carry trades (funded with Yen) in the process. Evidently, this is wrecking havoc on the Japanese economy, which has a notoriously frail domestic sector and is heavily reliant on exports to drive growth. The Central Bank of Japan has recently threatened intervention, and now that the G7 is presumably on board, it may do just that. The New York Times reports:

The statement, which said the G-7 would "monitor the markets closely and cooperate as appropriate," came as countries in Asia, spooked by the relentless sell-offs in the stock markets, scrambled to support their economies.

Read More: Group of 7 Meeting in Tokyo Tackles Yen’s Rise

One can usually assume that any talk of the carry trade is in reference to the Japanese Yen. In this case, however, it is the Dollar that is being driven by a shift away from the popular strategy of borrowing in one currency and investing the proceeds in assets dominated in another. In explaining the recent Dollar rally, analysts have tended to focus on the pall of risk aversion that has descended upon global capital markets, coupled with the spread of the credit crisis from the US to the rest of the world. While these are certainly contributing factors, perhaps they should also look at the repatriation of Dollars that were initially sent abroad over the last decade in search of loftier returns. Hedge funds and other institutions, including those based outside of the US, took advantage of record-low interest rates to borrow Trillions of Dollars and invest them abroad. Due to a combination of margin calls and client "withdrawals," however, such investors have been forced to not only unwind such positions, but return the proceeds of the US. The Guardian UK reports:

Data collected by the Bank for International Settlements shows that European and UK banks have five times as much exposure to emerging markets as US and Japans banks, with surprisingly big bets in Latin America and emerging Asia - where they rely on dollar funding rather than euros.

Read More: Dollar roars back as global debts are called in

Emerging Market currencies are becoming the latest victims of financial derivatives, proving Warren Buffet's claim that such contracts represent "financial weapons of mass destruction." Apparently, companies throughout the developing world (although predominantly in Latin America) had used derivatives to bet on the strength of their home currencies, relative to the US Dollar. Given their record appreciation over the preceding few years, such bets probably appeared risk-less. As investors have fled emerging markets en masse, however, such currencies have tumbled. This has forced companies that had bet against the Dollar to rapidly unwind their derivative positions, which only caused their currencies to decline further. The Mexican Peso and Brazilian Real, to name the most prominent examples, are now in a virtual tailspin. Another "short squeeze" is probably not far away. The Wall Street Journal reports:

[Investors] had begun pulling money out of Mexico and other emerging markets. Since Aug. 1, the peso has dropped 24% against the dollar, and in October careened through its biggest daily drops since a 1994 currency crisis.

Read More: Big Currency Bets Backfire

Last week, China revealed that in the most recent quarter, its economy grew at the slowest pace in nearly five years. It also revealed that its foreign exchange reserves crossed $1.9 Trillion, due to a record monthly trade surplus. How can this seeming contradiction in economic peformance be reconciled? In my opinion, the Chinese economy will continue to slow as a result of a generalized post-olympics slowdown and falling export demand brought on by the global economic crisis. The consequent collapse in risk appetite will bear negatively on investing in Chinese assets. Its stock market has already lost 50% of its value this year, and foreign direct investment (which is more difficult to monitor) is certainly sliding. In other words, there will be less foreign capital for the Central Bank to soak up, and less pressure on the RMB to appreciate. AFP reports:

The various factors at play could actually be causing some capital outflows as troubled foreign firms and investors may need the money overseas.

Read More: China's forex reserves pass 1.9 trillion dlrs: central bank