The U.S. Dollar Index (USDX, DXY, DX, or, informally, the "Dixie") is an index (or measure) of the value of the United States dollar relative to a basket of foreign currencies, often referred to as a basket of U.S. trade partners' currencies. The Index goes up when the U.S. dollar gains "strength" (value) when compared to other currencies.
It is a weighted geometric mean of the dollar's value relative to following select currencies:
- Euro (EUR), 57.6% weight
- Japanese yen (JPY) 13.6% weight
- Pound sterling (GBP), 11.9% weight
- Canadian dollar (CAD), 9.1% weight
- Swedish krona (SEK), 4.2% weight
- Swiss franc (CHF) 3.6% weight
USDX started in March 1973, soon after the dismantling of the Bretton Woods system. At its start, the value of the U.S. Dollar Index was 100.000. It has since traded as high as 164.7200 in February 1985, and as low as 70.698 on March 16, 2008.
The make up of the "basket" has been altered only once, when several European currencies were subsumed by the euro at the start of 1999. Some commentators have said that the make up of the "basket" is overdue for revision as China, Mexico, South Korea and Brazil are major trading partners presently which are not part of the index whereas Sweden and Switzerland are continuing as part of the index.
|Year (last business day)||DXY close||Factors|
|1967||121.79||Gold standard kept dollar at $35/oz.|
|1969||121.74||Dollar hit 123.82 on 9/30.|
|1971||111.21||President Richard Nixon announces the closing of the gold window and the institution of wage-price controls.|
|1972||110.14||Beginning of stagflation in response to the Nixon shock.|
|1973||102.39||Gold standard ended; 1973 oil crisis takes place. Index created in March.|
|1974||97.29||Nixon resigns as a result of the Watergate scandal; Gerald Ford becomes president.|
|1976||104.56||Jimmy Carter elected president; interest rate lowered.|
|1978||86.50||Fed raised rate to 20% to stop inflation.|
|1979||85.82||1979 oil crisis takes place.|
|1980||90.39||Ronald Reagan elected president after a recession began during Carter's last year as president.|
|1981||104.69||Economic Recovery Tax Act of 1981 passed by Congress; signed into law by President Reagan in August 1981.|
|1983||131.79||Emergency increases in taxes and defense spending are put into place; this was caused by the Tax Equity and Fiscal Responsibility Act of 1982.|
|1985||123.55||Record of 163.83 on March 5.|
|1986||104.24||Consolidated Omnibus Budget Reconciliation Act of 1985 and Tax Reform Act of 1986 signed into law by President Reagan; Internal Revenue Code enacted.|
|1988||92.29||Fed raised rates; Omnibus Foreign Trade and Competitiveness Act passed; George H. W. Bush elected president.|
|1990||83.89||Early 1990s recession begins; Omnibus Budget Reconciliation Act of 1990 passed.|
|1991||84.69||Persian Gulf War takes places during the second year of the recession.|
|1992||93.87||NAFTA approved by H. W. Bush; Bill Clinton elected president.|
|1993||97.63||Balanced Budget Act and Omnibus Budget Reconciliation Act of 1993 both passed.|
|1994||88.69||Marrakesh Agreement signed; United States becomes a founding member of the World Trade Organization.|
|1995||84.83||Fed raised rate.|
|1997||99.57||1997 Asian financial crisis; LTCM reform approved.|
|1998||93.95||1998 Russian financial crisis; Clinton impeached by House of Representatives.|
|1999||101.42||Clinton acquitted by the Senate; Gramm–Leach–Bliley Act passed.|
|2000||109.13||Dot-com bubble collapses; George W. Bush elected President after a Supreme Court battle over the election recount in Florida.|
|2001||117.21||Recession took place from March–November 2001; Economic Growth and Tax Relief Reconciliation Act of 2001 passed; dollar rose to 118.54 on 12/24 after the September 11 attacks.|
|2002||102.26||Euro launched as a hard currency at $.90.|
|2003||87.38||United States invasion of Iraq; Jobs and Growth Tax Relief Reconciliation Act of 2003 passed.|
|2004||81.00||American Jobs Creation Act of 2004 passed.|
|2005||90.96||War on Terror doubled debt; dollar weakened; Hurricane Katrina affects Louisiana.|
|2006||83.43||Tax Relief and Health Care Act of 2006 passed.|
|2007||76.70||Euro rose to $1.47; Great Recession began in December 2007.|
|2008||82.15||Record low of 71.30 on 3/17; Economic Stimulus Act of 2008 passed; Public Law 110-343 goes into effect in October 2008; Barack Obama elected president.|
|2009||77.92||American Recovery and Reinvestment Act of 2009 passed; ECB lowered rates; first period of quantitative easing (QE1) begins; 2009 flu pandemic begins in Mexico (pandemic ended in August 2010).|
|2010||78.96||Second period of quantitative easing (QE2) begins; Tax Relief, Unemployment Insurance Reauthorization, and Job Creation Act of 2010 passed; beginning of Arab Spring in November 2010|
|2011||80.21||Syrian civil war and Libyan Crisis begin; Osama bin Laden killed; Operation Twist initiated; European sovereign debt crisis begins; Budget Control Act of 2011 passed.|
|2012||79.77||Third period of quantitative easing (QE3) begins; Hurricane Sandy affects the northeastern states; American Taxpayer Relief Act of 2012 passed.|
|2013||80.04||United States budget sequestration in 2013 necessary to address the United States fiscal cliff; 2013 United States government shutdown occurs; West Africa Ebola virus epidemic begins.|
|2014||90.28||Euromaidan crisis in Ukraine; Greek debt crisis reaches its midpoint.|
|2015||98.69||Fed raised rates; European migrant crisis accelerates; Donald Trump announces his candidacy for President.|
|2016||102.21||2016 Brexit referendum takes place in the United Kingdom; Donald Trump elected president.|
|2017||92.12||EU strengthened; Hurricane Harvey affects Texas, Louisiana, and Arkansas; Tax Cuts and Jobs Act of 2017 passed.|
|2018||96.17||Trump tariffs began to be imposed; First North Korean–US summit takes place; Hurricane Florence affects North Carolina, South Carolina, and Virginia; Hurricane Michael affects Florida, Alabama, and Georgia; Alexandria Ocasio-Cortez and several other progressive Democratic candidates elected in the midterm elections; 2018–2019 United States federal government shutdown occurs.|
|2019||96.54||Trump seen on North Korean soil; Lebanese liquidity crisis begins; Fed begins acting as role in investor to provide funds in the repo markets; Abu Bakr al-Baghdadi killed on October 27; first case of COVID-19 discovered in China; Trump impeached by House of Representatives on December 18.|
|2020||93.27||Qasem Soleimani killed on January 3; Trump acquitted of impeachment on February 11; COVID-19 declared a pandemic by the World Health Organization on March 11; George Floyd protests begin on May 31.|
|2021||89.21||First dip below 90 since 2018; Increased pandemic stimulus payment prospects after Democrats take Senate control in the Georgia runoff election|
ICE provides live feeds for Dow Futures that appear on Bloomberg.com and CNN Money. USDX is updated whenever U.S. Dollar markets are open, which is from Sunday evening New York City local time (early Monday morning Asia time) for 24 hours a day to late Friday afternoon New York City local time.
The U.S. Dollar Index is calculated with this formula: USDX = 50.14348112 × EURUSD-0.576 × USDJPY0.136 × GBPUSD-0.119 × USDCAD0.091 × USDSEK0.042 × USDCHF0.036 
US Dollar Index futures are traded for 21 hours a day on the ICE platform with futures having a March/June/September/December quarterly expiration cycle. It is also available indirectly in exchange-traded funds (ETFs), options, CFDs and mutual funds.
- Trade Weighted US dollar Index
- Special drawing rights
- Dow Jones FXCM Dollar Index
- Wall Street Journal Dollar Index
- "U.S. Dollar Index - USDX". Investopedia. Retrieved March 23, 2013.
- "US Dollar Index Hits 12-Year High As ECB Unveils €1 Trillion Stimulus". FXTimes. Retrieved March 23, 2015.
- "US Dollar Index". FXStreet. Retrieved March 23, 2013.
- "U.S. Dollar Futures". Retrieved July 22, 2017.
The U.S. Dollar Index, together with all rights, title and interest in and related to the U.S. Dollar Index, including all content included therein (including, without limitation, it’s formulation, components, values, weightings and methods of calculation), and all related intellectual property and property rights, is the exclusive property of ICE Futures U.S., Inc.
- United States Patent and Trademark Office. "Trademark Search, Serial Number 74350026". Retrieved July 22, 2017.
- US Dollar Index®, What It Is, and Its History
- "U.S. Dollar Index® Contracts" (PDF). 2018. p. 2. Retrieved October 15, 2018.
- "ICE Futures and Options". www.theice.com. Retrieved January 9, 2021.