foreign markets. While SPDRs were organized as unit investment trusts, WEBS were set up as a mutual fund, the first of their kind. In 1998, State Street Global Advisors introduced "Sector Spiders", separate ETFs for each of the sectors of the S&P 500 Index. Also in 1998, the "Dow Diamonds" (NYSE Arca: DIA) were introduced, tracking the Dow Jones Industrial Average. In 1999, the influential "cubes" (Nasdaq: QQQ), were launched, with the goal of replicate the price movement of the NASDAQ-100. The iShares line was launched in early 2000. By 2005, it had a 44% market share of ETF assets under management. Barclays Global Investors was sold to BlackRock in 2009. NYSE merger As of 2003, AMEX was the only U.S. stock market to permit the transmission of buy and sell orders through hand signals. In October 2008 NYSE Euronext completed acquisition of the AMEX for $260 million in stock. Before the closing of the acquisition, NYSE Euronext announced that the AMEX would be integrated with the Alternext European small-cap exchange and renamed the NYSE Alternext U.S. The American Stock Exchange merged with the New York Stock Exchange (NYSE Euronext) on October 1, 2008. Post merger, the Amex equities business was branded "NYSE Alternext US". As part of the re-branding exercise, NYSE Alternext US was re-branded as NYSE Amex Equities. On December 1, 2008, the Curb Exchange building at 86 Trinity Place was closed, and the Amex Equities trading floor was moved to the NYSE Trading floor at 11 Wall Street. 90 years after its 1921 opening, the old New York Curb Market building was empty but remained standing. In March 2009, NYSE Alternext U.S. was changed to NYSE Amex Equities. On May 10, 2012, NYSE Amex Equities changed its name to NYSE MKT LLC. In June 2016, a competing stock exchange IEX (which operated with a 350-microsecond delay in trading), gained approval from the SEC, despite lobbying protests by the NYSE and other exchanges and trading firms. On July 24, 2017, the NYSE renamed NYSE MKT to NYSE American, and announced plans to introduce its own 350-microsecond "speed bump" in trading on the small and mid-cap company exchange. Products Intellidex Stocks Options Exchange-traded funds (ETFs) Structured Products Warrant (finance) Management Past presidents of the American Stock Exchange include: John L. McCormack (1911–1914) Edward R. McCormick (1914–1923) John W. Curtis (1923–1925) David U. Page (1925–1928) William S. Muller (1928–1932) Howard