IBEX 35

IBEX 35 is the benchmark stock market index of the Bolsa de Madrid, the largest and most significant securities market in Spain. Operated by Bolsas y Mercados Españoles (BME), it tracks the performance of the thirty-five most liquid Spanish stocks traded on the Continuous Market. The index serves as the underlying asset for a wide range of financial products, including futures and options traded on MEFF.

Overview

The index was officially launched on 14 January 1992, with a base value of 3000 points, consolidating various prior indicators into a single national benchmark. Its primary purpose is to provide a real-time, investable representation of the Madrid Stock Exchange and, by extension, the Spanish corporate economy. The constituent companies are leaders in major sectors such as banking, telecommunications, energy, and industrial goods, with significant global operations. Key historical moments for the index include its peak during the dot-com bubble, the severe decline during the 2007–2008 financial crisis and the subsequent European debt crisis, and its recovery phases influenced by monetary policies from the European Central Bank. Trading of derivatives based on the index is a core activity at Spain's official futures exchange, MEFF.

Composition and Selection

The index composition is reviewed biannually by the Technical Advisory Committee of Bolsas y Mercados Españoles. Selection is fundamentally based on liquidity, measured by the volume of shares traded over a six-month evaluation period; the thirty-five most liquid stocks are generally included. Other factors considered include free-float market capitalization and sector representation to ensure the index reflects the broader market. Prominent perennial constituents often include multinational giants like Banco Santander, Telefónica, Inditex (owner of Zara), and Iberdrola. The committee also maintains a list of eligible substitutes to facilitate rapid changes in the event of a corporate action like a merger, delisting, or a significant liquidity drop, ensuring the index's continuity and investability.

Historical Performance

The index's trajectory has been marked by several bull and bear markets, closely tied to Spain's economic cycles and international events. It experienced a dramatic rally in the late 1990s, fueled by privatization of state-owned enterprises and technology enthusiasm, reaching then-record highs. The collapse of the dot-com bubble and the 2007–2008 financial crisis precipitated sharp declines, with the latter exacerbated by the bursting of the Spanish property bubble and ensuing banking troubles, requiring interventions like the European Financial Stability Facility. The index found a historic low in 2012 during the peak of the European debt crisis before embarking on a prolonged recovery. More recently, performance has been influenced by events such as the COVID-19 pandemic, the war in Ukraine, and shifts in monetary policy by the Federal Reserve and the European Central Bank.

Calculation Methodology

The index is calculated in real-time during trading hours using a free-float adjusted market capitalization-weighted methodology. This means the influence of each constituent on the index value is proportional to the market value of its publicly traded shares, not its total shares outstanding. The calculation employs a divisor to maintain index continuity when corporate actions such as dividend payments, rights issues, or changes in constituent shares occur, preventing artificial jumps or drops unrelated to market movements. The official index values, including price return and gross total return versions, are disseminated by Bolsas y Mercados Españoles and major financial data providers like Bloomberg L.P. and Reuters.

Related Indices

Bolsas y Mercados Españoles maintains a family of indices to cater to different investment strategies and market segments. The IBEX Medium Cap (IBEX Mid Cap) and the IBEX Small Cap indices track medium-sized and smaller companies, respectively. The IBEX 35 Total Return index accounts for reinvested gross dividends. For broader exposure, the IBEX All-Share index encompasses nearly all listed companies on the Spanish Continuous Market. Specialized sector indices, such as the IBEX Financials or IBEX Utilities, and sustainability-focused indices like the IBEX Sustainability are also published. These indices provide benchmarks for exchange-traded funds (ETFs), structured products, and performance measurement for institutional investors and asset managers.

Category:Stock market indices Category:Economy of Spain Category:1992 establishments in Spain