The number of ETFs available in the market may be confusing, but there are so many choices that investors can customize their portfolios according to their personal preferences and strategy. The ultimate goal is usually the same (to make money), there are two primary categories investors fall into: those who use a fundamental strategy and those who prefer a sector strategy, explains Don Dion for TheStreet. We throw in a third strategy below, too.

Fundamental Strategy: Fundamental ETF portfolios are suitable for investors looking to take advantage of the cost efficiency and tax efficiency of ETFs over an extended time period. These portfolios are usually not traded very often and provide exposure to the broad market while meeting their needs for income.

Investors who find this strategy appealing often cite taxes as the primary lure.

• iShares Dow Jones Select Dividend Index (NYSEArca:DVY): up 4.8% year-to-date

• PowerShares QQQ (NYSEArca: QQQQ): up 42.9% year-to-date

Sector Strategy: A sector ETF strategy is designed to actively capture market trends. Some prefer  a momentum-based strategy to indicate the best times to enter and exit funds. ( The strategy you choose is just as important as the approach). These portfolios are considered active, as they are traded and monitored constantly.

• iShares iBoxx $ High Yield (NYSEArca: HYG): up 23.8% year-to-date

• PowerShares DB U.S. Dollar Bullish (NYSEArca: UDN): up 8.1% year-to-date

A Blend Strategy. We use trend following by monitoring the 200-day moving average in order to find those areas that are moving. By getting in and out of the market at set signals, you give yourself the opportunity to be in the markets for any potential long-term uptrend. The stop loss enables you to put a cap on your losses. The benefit of relying on market signals to determine where and when you invest also removes the “noise” that emotions can generate and cloud your judgment. Any ETF works with this strategy, whether it’s a broad-based, plain-vanilla fund or a more exotic, niche ETF. (How to get in on the rebound).

Always do some research on what you are implementing and consider the liquidity, underlying stocks and pricing taking place in the ETFs you choose.

For more stories about trend following, visit our trend following category.

After the fund ran out of available shares, trading in PowerShares DB U.S. Dollar Bullish (NYSEArca: UUP) was halted today at 1:23 p.m. ET until a filing with the SEC could be made.

An application for 100 million additional shares was filed and the fund began trading again at 1:51 p.m. ET. As long as no new creation baskets can be issued, UUP runs the risk of trading at a premium to its net asset value (NAV). Investors who want to monitor the intraday indicative value of the fund can visit the ticker page on Yahoo Finance.

UUP is trading at four or five times normal volume today, and until new shares are granted, the fund could continue to trade at a premium. Investors who aren’t comfortable with the premiums should wait until new shares are issued if they plan to buy the fund. Today, UUP is trading at roughly a 1.7% premium.

UUP has been seeing trading volume with moves valued at hundreds of thousands of dollars. Hours before the Federal Reserve announced plans to keep the federal fund target lending rate at current levels, options traders poured into UUP, reports Tennille Tracy for The Wall Street Journal. (ETFs to play the Fed’s move).

UUP tracks the moves of the U.S. dollar against other major currencies. The bulk of the action in the PowerShares fund appears to have been driven by professional investors who emerged to buy options in batches of 10,000 or more, and many of the transactions cost $150,000 and up.

Nguyen Ahn Thu, Darcy Crowe, and Will Conners for The Wall Street Journal report that although the U.S. dollar has lost value, it’s still king on the black market in foreign countries. It’s estimated that as much as 75% of U.S. notes in circulation are held outside the United States, and most of that is in the underground economy.

Residents of poorer countries, such as Venezuela, prize the dollar for its inflation-protection ability against weaker local currencies. (Other reasons foreign countries like a strong U.S. dollar).

For more stories about the U.S. dollar, visit our U.S. dollar category.

The Central Bank will keep rates unchanged, but the widening yield spreads between mortgage-backed securities (MBS) and federal agency debt against Treasuries may be an essential factor in determining the Fed’s stance on the direction of interest rates, reports Julie Haviv for Reuters. The Fed will buy $1.25 trillion allotted for its MBS program by the end of the first quarter of 2010. (ETFs to shelter against a weak dollar).

Purchase programs have inflated some securities to the point that investors are beginning to turn to the risk/reward of alternative spread products like corporate bonds. For instance, the yield spread on the 30-year Fannie Mae 4.5% current coupon stood at 1.47% over the 5- and 10-year Treasury blend, says Arthur Frank, director and head of MBS research at Deutsche Bank Securities.

The Fed’s decision ultimately could keep the dollar weak for the time being. To capitalize on continued weakness in our currency, consider some of the following ETFs:

• PowerShares DB U.S. Dollar Bearish (NYSEArca: UDN). UDN is up 7.2% year-to-date. This ETF seeks to reflect the performance of the short side of U.S. dollar – basically, the dollar goes down the fund goes up. (More on UDN and a weaker dollar).

• CurrencyShares Euro Trust (NYSEArca: FXE). FXE is up 5.4% year-to-date. A straight forex play on the appreciating euro. As the dollar depreciates against the euro, the euro gains in strength. FXE tries to reflect those gains. (More on FXE and the euro)

• iShares MSCI Emerging Markets Index Fund (NYSEArca: EEM). EEM is up 54.1 % year-to-date. By holding non-dollar-denominated assets, such as emerging market equities, investors  can hedge against weakness. Emerging market investments get the benefit of the “dollar kicker” since assets denominated in foreign currencies are eventually converted back to weaker U.S. dollars. (More on EEM and emerging markets).

• iShares S&P GSCI Commodity-Indexed Trust (NYSEArca: GSG). GSG is up 12.5% for the year. This fund, like other commodity funds, can be a weak dollar hedge. GSG owns futures for 24 different commodities. (More on GSG and commodities).

• SPDR Gold Shares (NYSEArca: GLD). GLD is up 23.1% year-to-date. Gold is another weak dollar hedge because it’s considered a store of value. The current high supply of the dollar in the economy can result in high inflation and many investors have turned to gold as a way to protect against inflation. (More on GLD and gold).

For full disclosure, Tom Lydon’s clients own shares of EEM and GLD.

Read the disclaimer, as Tom Lydon is a board member of Rydex Funds.

Max Chen contributed to this article.

Copper started the week with a new year high and brokers are uncertain as to the cause, reports Andrea Hotter for The Wall Street Journal. Market fundamentals aren’t supporting any strong price gains at the moment. Copper did receive a boost yesterday after the factory orders report. (Where’s copper going?)

• iPath DJ AIG Copper TR Sub-Idx ETN (NYSEArca: JJC): up 107.8% year-to-date

The U.S. Commodity Futures Trading Commission Commitments of Traders report revealed that speculative long positions have hit a high last seen in the beginning of 2006, which means downside risk is accumulating, and the current commodities market is still bullish. Experts and analysts are divided as to how prices will pan out.

• iShares S&P GSCI Commodity-Indexed Trust (NYSEArca: GSG): up 10% year-to-date

China is the largest holder of U.S. debt, with around $1 trillion, and experts are urging China to diversify its currency holdings unless the country enjoys watching its dollar holdings depreciate in value, remarks Andrew Snyder for Today’s Finance News. Another option for China is to exchange some dollars for commodity holdings as a better way to hold value – also, better for commodities investors gazing at those price upticks.

• PowerShares DB U.S. Dollar Index Bearish (NYSEArca: UDN): up 7.4% year-to-date

Natural gas inventories are almost topped off  with a little more than 3.7 trillion cubic feet – the total country storage space is 3.9 trillion cubic feet. Snyder believes the natural gas market has ridden the commodities bubble and a correction may soon take place as the spot market corrects for the excess inventory. (How to avoid a bubble).

• United States Natural Gas (NYSEArca: UNG): down 57% year-to-date

Keep in mind that these are just predictions. Watch the markets for what really happens, and act accordingly. When investing in commodities, it’s wise to have an exit strategy that involves a stop-loss points that you can execute when the time comes. (How to protect yourself with a trend-following plan).

For more information on commodities, visit our commodity category.

Max Chen contributed to this article.

A weak U.S. dollar helps U.S. manufacturers, U.S. exporters and U.S. multinationals, writes Gary Gordon for ETF Expert. But a weak dollar means foreign exporters and foreign manufacturers are hurting as they try to sell to the U.S. market. (What’s so great about a weak dollar?)

For example, the strong euro is bad for business in the Eurozone. In August, exports dropped 6% from the previous month because of an appreciating euro. (More on the eurozone).

• CurrencyShares Euro Trust (NYSEArca: FXE): up 5.1% year-to-date

Japan is another country watching its currency appreciate. The Japanese yen is likely to stay stable since the island nation is heavily export dependent.

• CurrencyShares Japanese Yen Trust (NYSEArca: FXY): up 0.2% year-to-date

Both FXE and FXY are in an uptrend, tracking above their 50-day and 200-day moving averages.

As it stands, Europe and Japan don’t have much room to further decrease the value of their currencies through monetary policies since interest rates are already so low. Still, the U.S. dollar can’t go on depreciating forever.

For more information on world currencies, visit our currency category.

Read the disclaimer, as Tom Lydon is a board member of Rydex Funds.

Max Chen contributed to this article.

Oil had been above $80 a barrel for much of the morning, but dropped back below that mark as the dollar continued to gain against the euro, report Donna Kardos Yesalavish and Geoffrey Rogow for The Wall Street Journal. PowerShares DB U.S. Dollar Bullish (NYSEArca: UUP) is up about 0.5% this morning. (Read our currency report for more on currencies and ETFs).

The market’s dip is also being attributed to analyst downgrades of banks and concerns that Bank of America (NYSE: BAC) will have to sell shares in order to payback bailout money it received from the government, reports Rita Nazareth for Bloomberg. The Financial Select Sector SPDR (NYSEArca: XLF) is down more than 2% this morning.

Verizon Communication (NYSE: VZ) reported this morning that its third-quarter profit fell less than expected, by 9%. Gains in the company’s wireless division helped offset slower-than-expected growth in its FiOS television service, says Sinead Carew for Reuters. Vanguard Telecom Services (NYSEArca: VOX) is down more than 2.5% this morning; Verizon is 20.3%.

For more stories on telecommunications, visit our telecommunications page.

Governments of the European Union will need to reduce deficits and public debts that were incurred during the revitalization process of their economies, or the European Central Bank will raise interest rates, hampering the region’s economic recovery, reports Paul Taylor for The New York Times.

The Bruegel research group proposed that the E.U. should recapitalize and restructure banks, cut budget deficits and tighten monetary policy – in that order. (Four reasons Europe could make a comeback).

Meanwhile, the recovery could be uneven and various countries tackle their problems in their own way:

• E.U.’s Monetary Affairs Commissioner Joaquin Almunia stated that Germany’s unbalanced economic strategy failed to raise domestic demand and caused problems for the whole region.
• France and other countries were unable to consolidate their budgets and went into the crisis with high deficits.
• The current situation shows individual countries in the eurozone striving for their own well-being, and in Germany’s case, at the expense of others. (Watch Tom talk about Europe on CNBC).

Instead of picking individual countries if recovery will be uneven, a better way to invest in Europe may be through an ETF covering the region – this helps mitigate your risk.

• iShares S&P Europe 350 Index Fund (NYSEArca: IEV): up 32.9% year-to-date

• Vanguard European Stock (NYSEArca: VGK): up 36.2% year-to-date

• BLDRs Europe 100 ADR Index Fund (NYSEArca: ADRU): up 33.9% year-to-date

Countries that use the euro sent their finance ministers to meet as the euro appreciated against the dollar, reducing gains that would have aided the region’s economic recovery, writes Aoife White for The Associated Press. The eurozone’s foreign exports dropped 23% in August year-over-year, the quickest drop this year.

The eurozone is projected to pull out of the recession in the third quarter. Rising unemployment is still a problem for the region. (Our definitive guide to currency ETF investing).

For more information on Europe, visit our Europe category.

• CurrencyShares Euro Trust (NYSEArca: FXE): up 7.7% year-to-date

Read the disclaimer, Tom Lydon is a board member of Rydex Funds.

Max Chen contributed to this article.

To understand the implications of the new tax, it’s important to understand how iShares MSCI Brazil (NYSEArca: EWZ) works.

EWZ is a “cash create” product, unlike most ETFs where delivery is taken in the form of securities. Regulations in Brazil don’t allow in-kind share creations. Cash is taken in lieu of actual shares, and the money is taken and invested in Brazil.

When a market participant (MP) wants to create more shares of EWZ, there’s a fee associated with this creation that’s already built in. This new tax may eventually become a part of the fund expenses in the event that an increase in demand for EWZ leads to the creation of more shares.

According to its prospectus, Market Vectors Brazil Small-Cap (NYSEArca: BRF) also issues and redeems creation units primarily for cash.

Anything already issued in any fund is not impacted because it’s already in the local currency.

Meanwhile, money is flooding into Brazil. About $31 billion in foreign direct investment is expected this year. In turn, this news has upped their stock market and increased the value of the currency. The risk Brazil runs is the real getting too strong, which is a new problem for a country that has usually had to deal with inflation, reports Carl Mortished for Times Online.

This is what led to the tax: the country feared losing its foreign customers and exporters raised a ruckus, hence the 2% tax. While investors and the International Monetary Fund (IMF) initially balked, for the most part investors seem to feel the positives of growth prospects in Brazil outweigh the negatives of the tax.

For more stories about Brazil, visit our Brazil category.

• iShares MSCI Brazil Index (NYSEArca: EWZ): up 116.3% year-to-date

• Market Vectors Brazil Small-Cap (NYSEArca: BRF): up 86.7% year-to-date

• WisdomTree Dreyfus Brazilian Real (NYSEArca: BZF): up 34% year-to-date

Growth prospects for the next year are looking ripe for Russia, but the country must overcome the rouble’s highs against the euro. Darya Korsunskaya and Yelena Fabrichnaya for Reuters report that the appreciation of the rouble does allow for lower inflation and more trust in the banking system, despite the dangerous levels. (How to play Russia and China’s gas deal).

On the plus side, next year’s growth could top 2% if oil prices stay high. Greater revenues from taxes on energy companies could also ensure this year’s budget deficit is smaller than expected, according to the Finance Minister. Itar Tass forBusiness Standard reports that serious work is needed at the business and state level. Even if negative aspects of oil’s growth take over, Russia’s economy still stands in a good position, analysts note. (Four things going for Russia).

For more stories about Russia, visit our Russia category.

• Market Vectors Russia (NYSEArca: RSX): up 144.1% year-to-date

• CurrencyShares Russian Rouble (NYSEArca: XRU): up 6.2% year-to-date

Read the disclaimer, as Tom Lydon is a board member of Rydex Funds.

The WisdomTree Dreyfus Emerging Currency (NYSEArca: CEW) accesses “non-deliverable” forward (NDF) exchange contracts, and the fund captures the broad and sudden shifts of investor sentiments in the emerging currencies market, writes Rakesh Saxena for Seeking Alpha.

CEW fund provides access to the short-term money market in the emerging markets without encumbering investors with possible settlement risks. It is noted that only those comfortable with foreign exchange risks should be investing in this type of fund. (More on currency investing in our special report).

Potential traders should also note that NDF contracts incorporate interest rate differentials and speculative orders, which means that during stressful times in the financial markets, the exchange rates available in the NDF market are more accurate than the official quotes from emerging market banks.

NDF contracts are essentially outright forward exchange contracts with profits and losses adjusted between two counterparties based on the difference between the contracted and spot rate on the contract maturity date. (More on forward contracts can be found here).

Why is a basket of currencies beneficial?

• Emerging markets can be volatile; currency basket ETFs can give you broad exposure to a range of currencies and mitigate your overall risk. (More on emerging markets here).
• They are lower-correlating assets. The currencies in emerging markets generally move independently  of other domestic investments and alternative asset classes, such as commodities.
• They’re another way to access the overall growth of a currency category; in this case, emerging markets.

For more information on world currencies, visit our currency category. Or take a look at our ETF currency guide for currency ETF selections.

• WisdomTree Dreyfus Emerging Currency (NYSEArca: CEW): up 5.9% since inception; currencies include Mexican peso, Brazilian real, Chilean peso, South African rand, Polish zloty, Israeli shekel, Turkish new lira, Chinese yuan, South Korean won, Taiwanese dollar, Indian rupee

Max Chen contributed to this article.