Question: One of the only manufacturers of immersion lithography systems is a Dutch company that is a component of what stock market index?
Context: The Dow Jones Industrial Average , also called DJIA, the Industrial Average, the Dow Jones, the Dow Jones Industrial, ^DJI, the Dow 30 or simply the Dow, is a stock market index, and one of several indices created by "Wall Street Journal" editor and Dow Jones & Company co-founder Charles Dow.  The industrial average was first calculated on May 26, 1896.  Currently owned by S&P Dow Jones Indices, which is majority owned by S&P Global, it is the most notable of the Dow Averages, of which the first (non-industrial) was originally published on February 16, 1885.  The averages are named after Dow and one of his business associates, statistician Edward Jones.  It is an index that shows how 30 large publicly owned companies based in the United States have traded during a standard trading session in the stock market.  It is the second-oldest U.S. market index after the Dow Jones Transportation Average, which was also created by Dow. The S&P/TSX Venture Composite Index is a stock market index intended as a broad market indicator for the TSX Venture Exchange, which lists Canadian companies that do not meet the criteria to be listed on the Toronto Stock Exchange.  The index includes about 500 companies, weighted by market capitalization.  It is revised quarterly to remove companies which have a weight of less than 0.05% of the index, and to include companies which, if included, would have a weight of more than 0.05%.  The index is managed by Standard & Poor's, which also manages other stock market indices in Canada and other countries. ASML is a Dutch company and currently the largest supplier in the world of photolithography systems for the semiconductor industry.  The company manufactures machines for the production of integrated circuits (ICs), such as CPUs, DRAM memory, flash memory.  The company is a component of the Euro Stoxx 50 stock market index. The Jantzi Social Index is a Canadian stock market index created in 2000.  It is based on a modified S&P/TSX Composite Index with the purpose being to measure the effect of a socially and environmentally conscious stock market index on market behavior. Next-generation lithography or NGL is a term used in integrated circuit manufacturing to describe the lithography technologies slated to replace photolithography.  As of 2016 the most advanced form of photolithography is immersion lithography, in which water is used as an immersion medium for the final lens.  It is being applied to the 16 nm and 14 nm nodes, with the required use of multiple patterning.  The increasing costs of multiple patterning have motivated the continued search for a next-generation technology that can flexibly achieve the required resolution in a single processing step. The S&P MidCap 400 Index, more commonly known as the S&P 400, is a stock market index from S&P Dow Jones Indices.  The index serves as a barometer for the U.S. mid-cap equities sector and is the most widely followed mid-cap index in existence.  To be included in the index, a stock must have a total market capitalization that ranges from $1.4 billion to $5.9 billion at the time of addition to the index.  s of 31 2017 , the median market cap was almost $3.8 billion with the market cap of the largest company in the index at more than $10.6 billion and the smallest company at $948 million.  The index's market cap covers nearly 7 percent of the total US stock market.  The index was launched on June 19, 1991. The Standard & Poor's 500, often abbreviated as the S&P 500, or just "the S&P", is an American stock market index based on the market capitalizations of 500 large companies having common stock listed on the NYSE or NASDAQ.  The S&P 500 index components and their weightings are determined by S&P Dow Jones Indices.  It differs from other U.S. stock market indices, such as the Dow Jones Industrial Average or the Nasdaq Composite index, because of its diverse constituency and weighting methodology.  It is one of the most commonly followed equity indices, and many consider it one of the best representations of the U.S. stock market, and a bellwether for the U.S. economy.  The National Bureau of Economic Research has classified common stocks as a leading indicator of business cycles. Immersion lithography is a photolithography resolution enhancement technique for manufacturing integrated circuits (ICs) that replaces the usual air gap between the final lens and the wafer surface with a liquid medium that has a refractive index greater than one.  The resolution is increased by a factor equal to the refractive index of the liquid.  Current immersion lithography tools use highly purified water for this liquid, achieving feature sizes below 45 nanometers.  ASML, Canon, and Nikon are currently the only manufacturers of immersion lithography systems. The S&P SmallCap 600 Index, more commonly known as the S&P 600, is a stock market index from Standard & Poor's.  It covers roughly the small-cap range of US stocks, using a capitalization-weighted index.  s of 31 2017 , the market capital of companies included in the S&P SmallCap 600 Index ranged from US$ 400 million to US$ 1.8 billion.  The index's median market cap was almost $1.1 billion and covered roughly three percent of the total US stock market.  These smallcap stocks cover a narrower range of capitalization than the companies covered by the Russell 2000 Smallcap index which range from $169 million to $4 billion.  The market valuation for companies in the SmallCap Index and other indices change over times with inflation and the growth of publicly traded companies.  The S&P 400 MidCap index combined with the SmallCap 600 compose the S&P 1000, and the S&P 1000 plus the S&P 500 comprise the S&P 1500.  The index was launched on October 28, 1994. The S&P 500 stock market index, maintained by S&P Dow Jones Indices, comprises 505 common stocks issued by 500 large-cap companies and traded on American stock exchanges, and covers about 80 percent of the American equity market by capitalization.  The index is weighted by free-float market capitalization, so more valuable companies account for relatively more of the index.  The index constituents and the constituent weights are updated and checked on regularly using rules published by S&P Dow Jones Indices.  Although the index is called the S&P "500", the index contains 505 stocks because it includes two share classes of stock from 5 of its component companies.
Answer: Euro Stoxx 50