The FTSE 100 is the UK's headline equity index — 100 of London Stock Exchange's largest companies by market capitalisation. Prediction markets around its level, direction, and relative performance to other major indices attract genuine trading volume from UK-based participants throughout 2026.
FTSE 100 Market Types
FTSE 100 prediction markets typically ask discrete outcome questions: 'Will the FTSE 100 close above 8,500 at year end?', 'Will the FTSE 100 outperform the S&P 500 in 2026?', 'Will the FTSE 100 experience a 10% correction at any point in 2026?'. These resolve against official close prices on specified dates.
What Drives FTSE 100 in 2026
- →Sterling exchange rate — FTSE 100 earns ~75% of revenue overseas; weaker GBP boosts index
- →Global commodity prices — mining and energy companies are significant FTSE 100 components
- →US equity market direction — FTSE correlation with S&P 500 is significant
- →Bank of England policy — rate cuts benefit interest-rate sensitive sectors
- →UK political risk — budget announcements, regulatory changes, energy policy
The Sterling Relationship
The FTSE 100's heavy overseas revenue exposure means it has an unusual negative correlation with sterling. When the pound weakens, FTSE 100 earnings in sterling terms rise — and the index tends to outperform. This counterintuitive relationship creates mispricing in prediction markets that focus only on UK economic fundamentals.
FTSE 100 prediction markets that ignore sterling dynamics are frequently mispriced. A UK economic slowdown that weakens the pound can simultaneously lower domestic growth expectations but raise FTSE 100 earnings expectations. Track both.
Sector Concentration Risk
The FTSE 100 is heavily concentrated in financial services, energy, and mining — sectors that behave very differently from the broad economy. A prediction market positioned on 'UK economic outperformance' but expressed through the FTSE 100 is getting a very skewed exposure. Understand what you're actually trading.
"FTSE 100 prediction markets are genuinely different from UK economic prediction markets. Know which you're trading and make sure the resolution criteria matches your thesis."
— Boromarket