WIG

• 1. Introduction

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  WIG began on the 16th of April 1991, the very first day of trading on the Warsaw Stock Exchange after that exchange was re-established. The name started as an acronym, Warszawski Indeks Giełdowy, the Warsaw Stock Exchange Index. It is the oldest index of that exchange. That opening date sits on a fault line in Polish history, the moment after the fall of Communism in Poland, when a market reopened and needed a way to measure itself. Why would a single number matter on a first day of trading? How does one index stretch to cover an entire reborn marketplace, and what does it splinter into when investors want a closer look? The answers run through a roster of companies and a family of narrower indices that branch out from the original.

• 2. A First Day And A Name

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  The 16th of April 1991 carried more weight than a routine market open. It was the first day of trading on the Warsaw Stock Exchange after the exchange was re-established following the fall of Communism in Poland. WIG arrived on that day, and that timing is why it holds the title of the oldest index of the Warsaw Stock Exchange. The name itself records its origin. WIG was originally an acronym for Warszawski Indeks Giełdowy, which translates to the Warsaw Stock Exchange Index. An acronym tied to a single exchange points to a measure built to track that whole exchange rather than any one slice of it. Being first also meant being the reference point against which every later index on the exchange would be understood.

• 3. Counting The Market

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  330 companies sat under WIG as of the 8th of November 2023. That figure shows the breadth of the index, a wide net cast across the listed firms of the Warsaw Stock Exchange rather than a short, selective list. A count that large turns WIG into a broad gauge of the market as a whole. The more companies an index holds, the more it behaves as a portrait of the entire exchange instead of a spotlight on a few names. That breadth is exactly what makes the narrower indices, the ones that pull out smaller groups, worth separating from WIG in the first place.

• 4. The Family Of Subindices

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  WIG20, WIG30, MWIG40 and SWIG80 head the list of WIG subindices, each name carrying a number that signals how many companies it gathers. MWIG40 was known before as MIDWIG, and SWIG80 was known before as WIRR, so the family kept renaming itself as it grew. TECHWIG sits among them as another branch of the same tree. The sector-named members read like a map of the Polish economy. WIG-BANKI, WIG-BUDOW, WIG-INFO, WIG-MEDIA, WIG-PALIWA, WIG-SPOŻY and WIG-TELKO each carve out an industry, from banks to construction to media to fuels. WIG-PL rounds out the list, one more way to slice the same market that the parent index covers in full. Each subindex offers a sharper lens than the broad parent, a reminder that the original 1991 measure became the root from which all of these grew.