It's sometimes stated that Britain was the financial capital of the world prior to the First World War, and that it took extraordinary war spending like that in the Great War to shift the capital to America. Example:

While exact estimates of British overseas investment in the 19th century vary, there is general agreement that by 1914 Britain acquired a historically unprecedented position as a global creditor.

https://scholarship.sha.cornell.edu/cgi/viewcontent.cgi?article=1367&context=articles

However, this statement is not backed up by hard data. What portion (as a percent) of the world's finance was British? More specifically:

1. What portion of global governmental reserves was in the British pound?
2. What portion of global governmental reserves was in British bonds?
3. What portion of finance workers globally worked for British banks?
4. What portion of global wealth was held in British banks?

Edit 1: Added source for "common" claim

It's sometimes stated that Britain was the financial capital of the world prior to the First World War, and that it took extraordinary war spending like that in the Great War to shift the capital to America. Example:

While exact estimates of British overseas investment in the 19th century vary, there is general agreement that by 1914 Britain acquired a historically unprecedented position as a global creditor. Cornell

However, this statement is not backed up by hard data. What portion (as a percent) of the world's finance was British? More specifically:

1. What portion of global governmental reserves was in the British pound?
2. What portion of global governmental reserves was in British bonds?
3. What portion of finance workers globally worked for British banks?
4. What portion of global wealth was held in British banks?

It's commonly stated that Britain was the financial capital of the world prior to the First World War, and that it took extraordinary war spending like that in the Great War to shift the capital to America. However, this statement is typically not backed up by hard data. What portion (as a percent) of the world's finance was British? More specifically:

1. What portion of global governmental reserves was in the British pound?
2. What portion of global governmental reserves was in British bonds?
3. What portion of finance workers globally worked for British banks?
4. What portion of global wealth was held in British banks?

It's sometimes stated that Britain was the financial capital of the world prior to the First World War, and that it took extraordinary war spending like that in the Great War to shift the capital to America. Example:

While exact estimates of British overseas investment in the 19th century vary, there is general agreement that by 1914 Britain acquired a historically unprecedented position as a global creditor.

https://scholarship.sha.cornell.edu/cgi/viewcontent.cgi?article=1367&context=articles

However, this statement is not backed up by hard data. What portion (as a percent) of the world's finance was British? More specifically:

1. What portion of global governmental reserves was in the British pound?
2. What portion of global governmental reserves was in British bonds?
3. What portion of finance workers globally worked for British banks?
4. What portion of global wealth was held in British banks?

Edit 1: Added source for "common" claim