ISEQ 20ISEQ 20 companies

The ISEQ 20 tracks 20 Irish companies. As of 26 Oct 2026 the largest is Ryanair Holdings at 9.43% of the index, and the 10 largest make up 80.87%.

Members

20

Weighting

Free-float market cap

Provider

Euronext

Review

Quarterly, annual review in June

Country

Ireland

Data as of

26 Oct 2026

Source: ISEQ 20 article on English Wikipedia (members table), as of 2026-10-26 (unverified: no provider or exchange file has the list). How we source this.

Members

Concentration

The 10 largest members make up 80.87% of the index.

• Ryanair Holdings9.43%
• Kingspan Group9.37%
• Kerry Group9.00%
• Hammerson plc8.98%
• AIB Group8.85%
• Bank of Ireland8.73%
• Cairn Homes8.30%
• Glanbia8.16%
• Glenveagh Properties5.20%
• Uniphar4.85%

Which other indexes share members with the ISEQ 20

Shade shows how many members each index shares with the ISEQ 20.

Americas

1. S&P Mervalno shared members
2. Ibovespano shared members
3. S&P/TSX Compositeno shared members
4. S&P IPSAno shared members
5. S&P/BMV IPCno shared members
6. S&P 500no shared members
7. Nasdaq-100no shared members
8. Dow Jonesno shared members
9. Russell 2000no shared members
10. Nasdaq Composite1 shared
11. NYSE Compositeno shared members

Europe

1. Euro Stoxx 50no shared members
2. ATXno shared members
3. BEL 20no shared members
4. OMX Copenhagen 20no shared members
5. OMX Tallinnno shared members
6. OMX Helsinki 25no shared members
7. CAC 40no shared members
8. DAXno shared members
9. OMX Iceland 15no shared members
10. ISEQ 20this index
11. FTSE MIBno shared members
12. OMX Rigano shared members
13. OMX Vilniusno shared members
14. LuxXno shared members
15. AEXno shared members
16. AMXno shared members
17. AMS Next 20no shared members
18. OSEBXno shared members
19. WIG20no shared members
20. PSIno shared members
21. MOEX Russiano shared members
22. IBEX 35no shared members
23. IBEX Medium Capno shared members
24. IBEX Small Capno shared members
25. OMX Stockholm 30no shared members
26. SMIno shared members
27. BIST 100no shared members
28. FTSE 100no shared members

Asia-Pacific

1. S&P/ASX 200no shared members
2. Shanghai Compositeno shared members
3. Hang Sengno shared members
4. Nifty 50no shared members
5. IDX Compositeno shared members
6. Nikkei 225no shared members
7. S&P/NZX 50no shared members
8. KSE 100no shared members
9. Straits Times Indexno shared members
10. KOSPIno shared members
11. VN-Indexno shared members

Middle East & Africa

1. EGX 30no shared members
2. TA-35no shared members
3. ASE Generalno shared members
4. QE Indexno shared members
5. TASIno shared members
6. JSE Top 40no shared members
7. ADX Generalno shared members

Fewermore

• Nasdaq Composite: 1 shared company

Recent changes

We started recording changes on 26 Oct 2026. None recorded yet.

Questions

How many companies are in the ISEQ 20?

The ISEQ 20 has 20 members. We show 20 as of 26 Oct 2026.

What is the largest company in the ISEQ 20?

Ryanair Holdings, at 9.43% of the index as of 26 Oct 2026.

How is the ISEQ 20 weighted?

Free-float market cap, according to Euronext.

When is the ISEQ 20 reviewed?

Quarterly, annual review in June.

Which ISEQ 20 companies are also in the Nasdaq Composite?

1 of them, as of 26 Oct 2026. The membership map below links the Nasdaq Composite.

Sources