Stock Exchange of Mauritius

The Stock Exchange of Mauritius (SEM), also known in French as the Bourse de Maurice, is the principal securities exchange of Mauritius. It is operated by Stock Exchange of Mauritius Ltd, a private limited company established under the Stock Exchange Act 1988, while exchange supervision was assigned to the Stock Exchange Commission. The exchange is headquartered in Port Louis and provides organized markets for the listing and trading of equities and other securities connected with Mauritian and, in some cases, international businesses. SEM operates two principal markets. The Official Market is the main market for established issuers and includes listed companies and other securities admitted under the exchange’s listing framework. The Development & Enterprise Market, commonly known as the DEM, is intended for smaller or developing enterprises that may not meet the requirements of the Official Market but can satisfy a separate admission and disclosure regime. The two-market structure allows SEM to serve both larger established companies and businesses seeking a regulated route to capital-market participation. The exchange’s listed universe has historically included banks and insurance companies, industrial businesses, investment companies, sugar-sector enterprises, commercial companies, leisure and hotel operators, and transport businesses. It has also supported the quotation of funds and securities with international links, including dual-listed funds. Beyond primary listings, SEM provides a venue for secondary trading, price discovery, market indices, corporate disclosure, and the transfer of ownership in listed securities. A major stage in SEM’s development was the opening of the Mauritian market to foreign investors in 1994 after the abolition of exchange controls. The framework described in the exchange’s historical material allowed foreign investors to trade Mauritian shares without general prior approval, subject to restrictions relating to acquiring legal or management control and a specific limit on individual foreign ownership in sugar companies. The same framework emphasized currency convertibility and the ability to repatriate investment proceeds, features that helped position Mauritius as an internationally oriented financial centre. SEM modernized its market infrastructure during the late 1990s. Daily trading was introduced toward the end of 1997, followed in 1998 by the implementation of a central depository system for listed companies. The depository supported delivery-versus-payment settlement on a T+3 rolling basis. A clearing arrangement involving the Bank of Mauritius also provided a guarantee fund and procedures intended to address settlement failures. New listing and reporting rules were developed with international advisers to strengthen transparency and investor information. The exchange’s principal equity benchmark is the SEMDEX, an all-share capitalization-weighted index whose base date is 5 July 1989 and whose base value was set at 100. Other indices include the SEMTRI total-return index, the SEM-7 index for seven large constituents, and the DEMEX and DEMTRI indices associated with the Development & Enterprise Market. The exchange has also participated in international and regional securities-market organizations, including the World Federation of Exchanges and the African Securities Exchanges Association. SEM’s role is primarily infrastructural rather than consumer-facing. Its brand represents regulated market access, listing and disclosure standards, trading, clearing and settlement, and the investment gateway provided by Mauritius’s capital market. Available reference material reports that, as of May 2026, the Official Market contained 63 securities with total capitalization of approximately Rs 362.8 billion. Earlier reference figures recorded 40 Official Market companies and 48 DEM companies, with the figures for those markets stated as of 31 July 2012; these historical figures should not be treated as current totals.

The modern Stock Exchange of Mauritius was created within the legal and institutional framework of the Stock Exchange Act 1988. That legislation established the exchange as a regulated market institution and provided for the Stock Exchange Commission to supervise exchange operations. Stock Exchange of Mauritius Ltd operates the exchange as a private limited company. In its early structure, the market comprised an Official List for listed securities and an over-the-counter market for unlisted shares. Historical descriptions of the market identify issuers from several sectors, including banking and insurance, industry, investment, sugar, commerce, leisure and hotels, and transport. Debentures and internationally connected funds were also part of the market’s broader securities offering. The SEMDEX was established as the exchange’s broad equity-market indicator. Its base date is 5 July 1989, with a base value of 100, and its methodology reflects the capitalization of constituent shares. The exchange later developed related benchmarks, including the SEMTRI total-return index, the SEM-7 index for leading constituents, and indices associated with the Development & Enterprise Market. A significant internationalization measure occurred in 1994, when Mauritius abolished exchange controls and opened its securities market to foreign investors. Foreign investors could generally trade shares without prior approval, although rules applied to attempts to obtain legal or management control of Mauritian companies and to foreign ownership of sugar companies. The historical framework also provided for currency convertibility and repatriation of investment funds, supporting Mauritius’s wider development as an international financial centre. SEM undertook substantial operational modernization in the late 1990s. Daily trading was introduced near the end of 1997. In 1998, a central depository system was implemented for listed companies, enabling delivery-versus-payment settlement on a T+3 rolling cycle. A clearinghouse arrangement involving the Bank of Mauritius included a guarantee fund and measures addressing the risk that securities or funds might not be delivered. During the same period, the exchange worked with international advisers on revised listing and reporting rules designed to improve disclosure and transparency. The exchange’s market architecture subsequently expanded beyond the traditional Official Market. The Development & Enterprise Market was created as a separate venue for companies that may be smaller or at an earlier stage of development than companies admitted to the Official Market. Together, the two markets allow SEM to combine a conventional regulated listing venue with a route designed for developing enterprises. SEM has also sought regional and international recognition. It became affiliated with international securities-market organizations after previously holding a corresponding-exchange status, and it was a founding member of the African Securities Exchanges Association. The exchange is also identified as a member of the World Federation of Exchanges in the reference material. By the period covered by the supplied reference material, SEM remained Mauritius’s primary stock exchange and continued to provide listing, trading, index, disclosure, clearing and settlement functions. A May 2026 reference reports 63 securities on the Official Market and capitalization of approximately Rs 362.8 billion. Earlier figures for 2012 reported 40 Official Market companies and 48 DEM companies, illustrating that market counts and capitalization have changed over time.

• 2026

  Official Market reported at 63 securities

  [1]Stock Exchange of Mauritiusen.wikipedia.org

  Reference material reported 63 securities and approximately Rs 362.8 billion in capitalization on the Official Market as of May 2026.

• 2012

  Historical market-size figures reported

  [1]Stock Exchange of Mauritiusen.wikipedia.org

  Reference material stated that, as of 31 July 2012, the Official Market had approximately 40 listed companies and the DEM had 48 companies, with market capitalizations of approximately US$5.3 billion and US$1.5 billion respectively.

• 1998

  Central depository and enhanced settlement infrastructure implemented

  [1]Stock Exchange of Mauritiusen.wikipedia.org

  SEM implemented a central depository system supporting delivery-versus-payment settlement on a T+3 rolling basis, alongside a clearing arrangement involving the Bank of Mauritius.

• 1997

  Daily trading introduced

  [1]Stock Exchange of Mauritiusen.wikipedia.org

  The exchange introduced daily trading toward the end of 1997 as part of its market-infrastructure modernization.

• 1994

  Market opened to foreign investors

  [1]Stock Exchange of Mauritiusen.wikipedia.org

  Following the abolition of exchange controls, foreign investors gained broader access to the Mauritian securities market, subject to specified ownership and control restrictions.

• 1989

  SEMDEX base date established

  [1]Stock Exchange of Mauritiusen.wikipedia.org

  The SEMDEX all-share index uses 5 July 1989 as its base date and a base value of 100.

• 1988

  Stock Exchange Act establishes the exchange framework

  [1]Stock Exchange of Mauritiusen.wikipedia.org

  The Stock Exchange Act 1988 established the legal basis for Mauritius’s organized securities exchange and created the supervisory role of the Stock Exchange Commission.

A regulated, internationally oriented securities-market infrastructure provider serving Mauritian issuers, investors and financial intermediaries, with separate markets for established companies and developing enterprises.

• Primary securities market · 1988

  Official Market

  SEM’s principal regulated listing and trading venue for established issuers and securities. The market has historically included companies from banking, insurance, industry, investment, sugar, commerce, leisure and hotels, and transport. It also supports market indices and secondary trading for admitted securities.

• Growth-company securities market

  Development & Enterprise Market

  A separate SEM market designed for developing or smaller enterprises that may not satisfy the admission requirements of the Official Market. It provides a regulated route for eligible businesses to obtain market visibility and access investors under a distinct listing and disclosure framework.

• Equity index · 1989

  SEMDEX

  The broad all-share index of the Stock Exchange of Mauritius. It is capitalization-weighted and uses 5 July 1989 as its base date, with an initial base value of 100.

• Total-return equity index

  SEMTRI

  A total-return variant associated with the SEM equity market, intended to reflect the performance of constituent securities while incorporating the effect of distributions according to the index methodology.

• Blue-chip equity index

  SEM-7

  An index tracking seven of the largest constituents of the Mauritian exchange, providing a narrower indicator of leading listed companies than the broad SEMDEX.

• Development-market indices

  DEMEX and DEMTRI

  Indices associated with the Development & Enterprise Market. DEMEX provides a market-performance measure, while DEMTRI is the corresponding total-return measure.

• Market infrastructure · 1998

  Central depository and settlement services

  SEM’s post-trade infrastructure includes central registration and depository functions for listed companies and delivery-versus-payment settlement on a T+3 rolling basis, supported by clearing and settlement-failure arrangements.

• 1998

  Modernize clearing and settlementStrategy

  Background

  The exchange required more robust post-trade infrastructure to support investor confidence and orderly settlement.

  Action taken

  SEM implemented a central depository system and a clearing arrangement involving the Bank of Mauritius, with delivery-versus-payment settlement on a T+3 cycle and a guarantee fund.

  Aftermath

  The reforms strengthened the exchange’s settlement framework and supported greater transparency and operational reliability.

  Source

• 1997

  Move toward daily tradingStrategy

  Background

  SEM sought to improve liquidity and modernize its operating model.

  Action taken

  Daily trading was introduced toward the end of 1997.

  Aftermath

  The measure increased the regularity of market access and formed part of a broader transition toward more modern exchange infrastructure.

  Source

• 1994

  Internationalize market accessStrategy

  Background

  Mauritius abolished exchange controls as part of the development of a more internationally accessible financial system.

  Action taken

  The securities market was opened to foreign investors, subject to restrictions concerning control of Mauritian companies and foreign ownership in the sugar sector.

  Aftermath

  The policy expanded the potential investor base and reinforced Mauritius’s role as an international financial centre. The supplied material does not provide a quantified assessment of its financial impact.

  Source

• Create a market for developing enterprisesStrategy

  Background

  Smaller or developing companies may not meet the requirements of the main Official Market while still seeking regulated market access.

  Action taken

  SEM established the Development & Enterprise Market as a separate venue with its own admission and disclosure framework.

  Aftermath

  The two-market structure broadened the types of issuers that could seek admission to a Mauritian exchange. The supplied material does not state the launch year or quantify the resulting capital raised.

  Source

1. 1Stock Exchange of Mauritiusen.wikipedia.org
2. 2Official website of the Stock Exchange of Mauritiusstockexchangeofmauritius.com