FTSE 100 is near an all-time high — but the FTSE 250 tells a different story
The UK's blue-chip index is sitting just below record territory. Its mid-cap cousin isn't sharing the party. Here's why two UK indices can move in opposite directions at the same time.
Key Takeaway
- The FTSE 100 traded near 10,508 on 29 June 2026, close to its all-time high and up ~19.3% year-to-date
- The FTSE 250 and FTSE 350 both edged lower the same day, reflecting softer domestic sentiment
- UK inflation sits at 2.80%, interest rates at 3.75%, and unemployment at 4.90% (29 June 2026 data)
- Miners, housebuilders and some defensives lagged while a handful of blue-chip names held the index up
- The divergence reflects how each index is built, not a single market-wide signal
The FTSE 100 is having a strong year — sitting close to an all-time high and up roughly 19.3% since January (Trading Economics, 29 June 2026). But scroll down the UK market and the picture changes: the FTSE 250, which tracks the next 250 largest London-listed companies, has been edging lower over the same sessions.
It's not a contradiction. It's a reflection of what each index actually contains, and what's been moving markets this week.
What's happening with the FTSE 100?
The FTSE 100 traded around 10,508 on 29 June 2026, having opened at 10,530.18 — just below its session peak and not far off its all-time high (Yahoo Finance / London Stock Exchange data, June 2026). Year-to-date, the index is up approximately 19.3% (Trading Economics, 29 June 2026).
A handful of blue-chip names have been doing the heavy lifting. Entain, Coca-Cola and Intermediate Capital were among the strongest performers in recent sessions, while BT shares advanced over 1% following a newly announced international partnership with Verizon to merge global enterprise operations (Trading Economics; AJ Bell, June 2026).
Why is the FTSE 250 lagging?
The FTSE 250 has been moving in the opposite direction — trading near 23,147 and edging lower, alongside a 0.16% dip in the broader FTSE 350 (Trading Economics, 29 June 2026).
Several domestically focused sectors have weighed on the mid-cap index:
- Miners fell as metal prices declined — Endeavour dropped over 3%, Fresnillo nearly 2%, and Anglo American and Antofagasta both fell close to 2% (Trading Economics, June 2026)
- Housebuilders softened following a class action lawsuit over alleged price fixing (Investegate, 30 June 2026)
- British American Tobacco fell as it finalised plans to cut or outsource roughly 20% of its global workforce — around 5,500 job losses and 3,500 outsourced roles by year end (Trading Economics; AJ Bell, June 2026)
The FTSE 250 typically mirrors domestic UK sentiment more closely than the FTSE 100, because its constituents are more UK-revenue-dependent. When the two diverge, it's often a signal investors are favouring globally diversified large-caps over domestically exposed mid-caps (Sunday Guardian Live, June 2026).
What's driving the split this week?
Beyond sector-specific moves, two macro threads have shaped sentiment:
- Inflation caution: Bank of England Chief Economist Huw Pill flagged that inflation, currently at 2.80%, remains above the Bank's 2% target, and cautioned against complacency on the pace of future rate cuts (Sunday Guardian Live, June 2026)
- Domestic politics: Andy Burnham delivered a high-profile speech in Manchester this week, setting out plans for economic growth, devolution and addressing youth unemployment — dominating headlines and keeping political uncertainty in view for UK-focused investors (Trading Economics, 29 June 2026)
With UK interest rates at 3.75% and unemployment at 4.90% (Trading Economics, 29 June 2026), the domestic backdrop remains a key input for investors weighing UK-focused versus globally diversified exposure.
Why does the FTSE 100 vs FTSE 250 gap matter?
Understanding why these two indices move differently helps investors interpret headlines more accurately. A “UK market at record highs” headline doesn't necessarily mean every UK-listed company is thriving — it often reflects strength concentrated in a subset of large, internationally diversified names.
| Index | Recent move | What it reflects |
| FTSE 100 | Near all-time high, +19.3% YTD | Large caps with international revenue |
| FTSE 250 | Edging lower | Mid-caps more exposed to domestic UK conditions |
| FTSE 350 | -0.16% | Combined large and mid-cap sentiment |
For a primer on how the index is constructed and what drives it, see IG’s guide to what is the FTSE 100.
UK index divergence summed up
- FTSE 100 trading near all-time highs, up ~19.3% year-to-date as of 29 June 2026
- FTSE 250 and FTSE 350 edged lower the same day, reflecting softer domestic sentiment
- Miners, housebuilders and BAT weighed on mid-caps; BT and a handful of blue-chips supported the FTSE 100
- UK inflation at 2.80%, rates at 3.75%, unemployment at 4.90% (29 June 2026)
- The gap reflects index composition, not a single uniform signal about the UK economy
- Past performance is not a reliable indicator of future results. Capital is at risk.
Frequently asked questions
Why is the FTSE 100 near a record high?
The FTSE 100 is being supported by strong performances from a number of blue-chip names, including Entain, Coca-Cola, Intermediate Capital and BT, the latter following a new international partnership with Verizon. The index is up approximately 19.3% year-to-date as of 29 June 2026 (Trading Economics, June 2026).
Why is the FTSE 250 underperforming the FTSE 100?
The FTSE 250 has been weighed down by weaker performances from miners (due to falling metal prices), housebuilders (facing a class action lawsuit over alleged price fixing) and British American Tobacco (which announced a major workforce restructuring). As a more domestically focused index, the FTSE 250 tends to be more sensitive to UK-specific news than the internationally diversified FTSE 100.
What is the difference between the FTSE 100 and FTSE 250?
The FTSE 100 tracks the 100 largest companies listed on the London Stock Exchange by market capitalisation, many of which generate the majority of their revenue internationally. The FTSE 250 tracks the next 250 largest companies, which tend to be more domestically focused and therefore more sensitive to UK economic and political conditions.
What is the UK's current inflation and interest rate?
As of 29 June 2026, UK inflation stood at 2.80%, above the Bank of England's 2% target, while the Bank Rate was 3.75% and unemployment was 4.90% (Trading Economics, June 2026). Bank of England Chief Economist Huw Pill has cautioned against complacency on inflation, suggesting a measured pace for any future rate cuts.
Capital at risk. The value of investments can go down as well as up, and you may get back less than you invest. Past performance is not a guarantee of future results.
Past performance is not a reliable indicator of future results.
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