How often is FTSE 100 rebalanced?

Quarterly, on the Wednesday after the first Friday of March, June, September, and December.

FTSE Russell, a subsidiary of the London Stock Exchange Group.

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Index · United Kingdom · Trades on LSE

FTSE 100 — Financial Times Stock Exchange 100

The 100 largest UK-listed companies by market cap.

About the FTSE 100

The FTSE 100 is the flagship index of the London Stock Exchange, comprising the 100 largest companies by market capitalisation. Its constituents are heavily internationalised — a majority of FTSE 100 revenue is generated outside the UK.

Notable FTSE 100 Listings

Quotes for 6 of the largest FTSE 100 listings, in local currency.

#	Ticker	Name	Sector	Price	24h	52-week range	P/E	Fwd P/E	Beta	Employees	Volume	Market Cap
1	SHEL	Shell	Energy	3,793.50	▲ 0.34%	2,553.77 3,806.50	11.2	9.1	-0.19	84,000	10.9M	215.91B
2	AZN	AstraZeneca	Healthcare	11,998.00	▲ 0.89%	9,892.00 15,732.00	24.0	13.9	0.21	96,100	4.5M	186.08B
3	HSBA	HSBC	Financial Services	1,395.80	▲ 1.10%	959.29 1,610.00	13.4	9.7	0.58	206,161	18.2M	238.68B
4	ULVR	Unilever	Consumer Defensive	4,673.50	▲ 1.03%	3,644.00 5,542.11	12.7	16.0	0.46	93,731	3.5M	100.65B
5	BP	BP	Energy	586.30	▲ 0.26%	399.35 609.40	23.5	9.0	-0.20	93,700	38.9M	90.60B
6	GSK	GSK	Healthcare	1,750.00	▲ 0.55%	1,592.00 2,282.00	14.8	9.2	0.28	66,841	6.9M	70.12B

Reference quotes for well-known listings. These companies are not yet in the API's covered set.

API coverage for the FTSE 100

Fetch the index membership list or query any constituent's data directly.

Index Members

List every constituent currently in the index.

GET /api/v1/indices/FTSE100

Constituent Financials

Full income statement, balance sheet, and cash flow per company.

GET /api/v1/companies/{ticker}/financials

Start querying FTSE 100 data

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Frequently Asked Questions

How often is FTSE 100 rebalanced?: Quarterly, on the Wednesday after the first Friday of March, June, September, and December.
Who administers it?: FTSE Russell, a subsidiary of the London Stock Exchange Group.
What currency is it quoted in?: British pence (GBX).