NGX 253,893 −0.07% NGN JSE 110,039 +0.25% ZAR MSE 484,395 −0.01% MWK RSE 268 0.00% RWF EGX 49,234 — EGP CSE 17,054 −0.47% MAD ESE 503 — SZL SGBV 3,802 −0.03% DZD NSX 2,349 — NAD BRVM 528 −0.02% XOF LuSE 25,070 −0.17% ZMW BSE 11,250 0.00% BWP USE 2,595 −1.14% UGX ZSE 487 −0.50% ZWG SEM 2,051 +0.26% MUR

NGX 253,893 −0.07% NGN JSE 110,039 +0.25% ZAR MSE 484,395 −0.01% MWK RSE 268 0.00% RWF EGX 49,234 — EGP CSE 17,054 −0.47% MAD ESE 503 — SZL SGBV 3,802 −0.03% DZD NSX 2,349 — NAD BRVM 528 −0.02% XOF LuSE 25,070 −0.17% ZMW BSE 11,250 0.00% BWP USE 2,595 −1.14% UGX ZSE 487 −0.50% ZWG SEM 2,051 +0.26% MUR

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Johannesburg Stock Exchange (JSE): Africa's Largest Stock Market Explained

The Johannesburg Stock Exchange is Africa's largest, oldest and most internationally integrated stock market. With a market capitalisation exceeding ZAR 18 trillion — the equivalent of roughly $1 trillion USD — the JSE dwarfs every other African exchange by a significant margin and ranks among the top 20 exchanges in the world.

March 20, 2026 · 5 min read · Mansa Markets

The Johannesburg Stock Exchange is Africa's largest, oldest and most internationally integrated stock market. With a market capitalisation exceeding ZAR 18 trillion — the equivalent of roughly $1 trillion USD — the JSE dwarfs every other African exchange by a significant margin and ranks among the top 20 exchanges in the world.

Founded in 1887 during the Witwatersrand gold rush, the JSE has evolved from a mining-focused commodity market into a full-spectrum financial exchange offering equities, bonds, derivatives, commodities, and exchange-traded funds.

JSE at a Glance

The JSE lists over 430 companies across its main board and AltX (Alternative Exchange), which caters to smaller and growing companies. Daily turnover can exceed ZAR 10 billion on active trading days. The JSE is a member of the World Federation of Exchanges and holds the chairmanship of the Association of Futures Markets.

It upgraded to fully electronic trading in 1996 and demutualized and listed on its own exchange in 2005 — one of the first African exchanges to do so.

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JSE Indices

JSE All Share Index (ALSI) — The broadest measure of JSE performance, tracking all primary-listed equities. As of early 2026 the ALSI stands at 110,070.23 — up 4.97% in recent sessions.

JSE Top 40 (J200) — Tracks the 40 largest companies by market cap on the JSE. This is the most widely referenced JSE benchmark internationally and the underlying for most JSE derivatives.

JSE Mid Cap and Small Cap Indices — Track companies outside the Top 40, providing exposure to South Africa's secondary and emerging corporate sector.

FTSE/JSE Africa Index Series — A joint venture between FTSE Group and the JSE launched in 2002, providing internationally standardised index methodology that complies with IOSCO recommendations. This series is the standard reference for institutional investors allocating to South African equities.

Sector Indices — The JSE publishes indices across all major sectors including resources (mining, oil and gas), financials, industrials, technology, consumer goods, and healthcare.

JSE Listed Companies: Key Players

Naspers / Prosus — South Africa's most valuable company and one of the world's largest technology investors. Naspers holds a 25% stake in Chinese tech giant Tencent, which alone is worth more than the entire JSE listing of most other African companies.

Anglo American — One of the world's largest diversified mining companies with operations across South Africa, Chile, Brazil, Australia and Canada. Anglo American's JSE listing reflects South Africa's deep mining heritage.

Standard Bank — Africa's largest bank by assets, with operations across 20 African countries.