HSBC market capitalisation: why one bank shows up as HK$, £ and US$ figures

HSBC's market capitalisation is its share price multiplied by its shares in issue. Sources quote HK$, £ and US$ totals because HSBC is listed in London, Hong Kong and New York, reports in US dollars, and each figure is taken at a different time.

By MarketFrame · Published 12 November 2026

Short answer: before you decide two HSBC figures disagree, check three inputs: which market's price was used, which share count, and when the price was taken. Line those up and the HK$, £ and US$ totals describe the same company in different units.

The short answer: one formula, several currencies

Market capitalisation is the share price multiplied by the number of shares in issue. The formula is the same everywhere. With HSBC, the inputs are what change.

The price depends on the market. London quotes HSBC shares in pence, Hong Kong in Hong Kong dollars, and New York in US dollars per American depositary share (ADS).
The share count depends on the date. HSBC has been buying back and cancelling shares, so the number in issue moves between announcements.
The company's own accounts use a third currency. HSBC reports in US dollars, so its results are in a different currency from its London and Hong Kong share prices.

Change any one of those and the total moves, even though nothing about the bank has changed.

Why HSBC is a harder case than a London-only bank

A company with a single London listing has one price in one currency. HSBC has more moving parts. According to HSBC's investor FAQs:

Since 2 July 1999 HSBC Holdings has issued one class of ordinary shares of US$0.50 each.
Those shares have a primary listing on the London Stock Exchange and branch listings on the Hong Kong Stock Exchange and the Bermuda Stock Exchange.
They are also listed on the New York Stock Exchange through an American Depositary Receipt programme, under which each ADS represents five ordinary shares.
HSBC reports in US dollars because, in its words, the majority of its business is conducted in US dollars or currencies linked to the dollar. Dividends are declared in US dollars and paid in US dollars, sterling or Hong Kong dollars.

So a data site can build a market cap from a sterling price, a Hong Kong dollar price or a US dollar ADS price, and each is a fair starting point. Index membership is a separate question that can change at each review, so check it at the source rather than assuming it. The guide to the FTSE 100 index explains how that works.

A worked example with made-up numbers

The numbers below are invented. They are not HSBC's share count, and they are not any real or recent price.

Say a company has 20 billion shares in issue, and at one moment:

the London price is £10.00 a share, so market cap is 20 billion × £10.00 = £200 billion
the Hong Kong price is HK$100.00 a share, so market cap is 20 billion × HK$100.00 = HK$2,000 billion
the New York price is US$60.00 per ADS, and one ADS is five shares, so the price per share is US$12.00 and market cap is 20 billion × US$12.00 = US$240 billion

Three totals, three currencies, one company. If the three prices were taken at the same moment and converted at the same exchange rate, the totals would come out close together, because they are prices for the same shares.

Two ways the New York figure can go wrong:

Multiply the ADS price by the full ordinary share count without dividing by five, and you get US$1,200 billion, five times too large.
Multiply the ADS price by only the ADSs in circulation, and you get the value of the part held through the ADR programme, a fraction of the whole company.

Four reasons two HSBC figures can both be right

Work through these in order before deciding a number is wrong:

Currency. HK$, £ and US$ totals are the same company in different units. Convert to one currency, at one exchange rate, before comparing.
Listing venue. Each market has its own price. The New York price is per ADS, so divide by five to get a price per ordinary share.
Timestamp. London, Hong Kong and New York trade at different times of the UK day, so a "closing" figure from each is a snapshot from a different moment. Our post on US and UK market hours in UK time covers London and New York. Check whether a page says live, delayed or end of day.
Share count. Sources do not all update their share count on the same day. HSBC's announcement of 6 October 2026 said it had 17,135,023,491 ordinary shares in issue, with none held in treasury. That followed the cancellation of 6,918,800 shares bought back under the buy-back announced on 5 August 2026. A source still using an older count will produce a slightly different total from the same price.

Any one of these can explain a gap. Often two or three apply at once.

How to check a figure against HSBC's own documents

You can rebuild a figure yourself from HSBC's investor relations pages:

Shares in issue. Go to HSBC's stock exchange announcements page and open the latest "Voting Rights and Capital" announcement. It states the number of ordinary shares in issue and the total voting rights. Write the date down next to the number, because the next cancellation changes it.
Listings and the ADS ratio. The investor FAQs list the listing venues and confirm that one ADS represents five ordinary shares.
Reporting currency. The same FAQs explain why HSBC reports in US dollars.
A sterling cross-check. HSBC's share analytics page shows a market cap in GBP and notes that its data may be delayed by 15 minutes or more. Treat it as a snapshot from a moment in time, not a live figure.
Recompute. Take one price from one venue at a stated time and multiply it by the share count from the nearest-dated announcement. If you start from an ADS price, divide it by five first. If your result is close to the figure you are checking, the remaining gap is most likely currency, timing or share count.

What market capitalisation does not tell you

Market capitalisation tells you the total value the market puts on a company's shares at one moment. That is all.

It does not tell you whether the shares are cheap or expensive, how profitable the bank is, how strong its capital position is, or how well it is run. A bigger figure does not mean a better bank. Nothing in this post is a view on HSBC's value or a suggestion to buy, sell or hold its shares. For how indices use company size, see the guide to stock market indices.

Where HSBC's company news sits on MarketFrame

The HSBC news analysis page collects each day's UK business coverage of the company with a tone score from −10 to +10. The banks sector page does the same for the sector, and the daily FTSE news hub covers every company. A tone score describes how the news reads. It is not a share-price forecast and says nothing about what HSBC's market capitalisation will be.

Questions people ask

How do you calculate HSBC's market capitalisation?

Multiply the share price by the number of ordinary shares in issue. Take the price from one market at a stated time, use the share count from HSBC's nearest-dated Voting Rights and Capital announcement, and keep to one currency. If you start from the New York price, divide it by five first, because each ADS represents five ordinary shares.

Why do some sites show HSBC's market cap in Hong Kong dollars?

HSBC's shares have a branch listing on the Hong Kong Stock Exchange, where they are priced in Hong Kong dollars. A site that uses the Hong Kong price will show a Hong Kong dollar total. It is the same company expressed in a different currency.

Is the London Stock Exchange market cap the same as the US figure?

Not as quoted. The London figure is in sterling. The New York listing trades as ADSs in US dollars, and each ADS represents five ordinary shares. The prices are also taken at different times. Convert to one currency at one time and adjust the ADS price, and the two should come out close together.

Does a bigger market cap mean a better bank?

No. Market capitalisation describes what the market values the shares at in total at one moment. It says nothing about profit, capital strength, risk or how well the bank is run, and it is not a reason to buy, sell or hold the shares.

Where does HSBC publish its number of shares in issue?

In its Voting Rights and Capital announcements, listed on the stock exchange announcements page in the investor relations section of hsbc.com. Each one gives the shares in issue and the total voting rights on a stated date, so note the date of whichever you use.

Sources

A short, free morning email on how the news treated the FTSE 100: the tone, the stories behind it, and when coverage starts to turn. Launching soon; one click to unsubscribe.