Bloomberg US Dollar Spot Index (BBDXY) - Index Fact Sheet

Oct 12, 2026

Bloomberg US Dollar Spot Index (BBDXY) summarizes how a basket of leading global currencies performs versus the U.S. Dollar. The index covers both developed and emerging markets, selected by trading activity and liquidity, and rebalanced annually on the last business day of June. It excludes currencies pegged to the U.S. Dollar and limits offshore Chinese Renminbi (CNH) exposure to 7%. The 2024 rebalance details constituent weights, ranking shifts, regional splits, and historical performance.

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Reading Time2 min

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Overview

Index Summary

Rebalancing and Allocation Method

Liquidity Method

Exclusions and Exceptions

Notable Changes in the 2024 Rebalance

Composition and Rankings (2024)

Regional Split

Historical Performance and Annual Returns

Bloomberg US Dollar Spot Index (BBDXY) Overview The Bloomberg Dollar Spot Index (BBDXY) tracks the performance of a basket of leading global currencies versus the U.S. Dollar. This document intends to provide an indicative summary of the index. Please see here for the full methodology. The index represents both developed and emerging market currencies that have the highest liquidity in the currency markets and the biggest trade flows with the U.S. The annually updated composition and diversified representation of currencies aims to provide a global measure of the U.S. Dollar. Index Summary Rebalancing Annual. The Index rebalances once a year on the last business day of June. Allocation Trade (50%)– Federal Reserve Survey of major trading partners versus the U.S. Dollar. Liquidity (50%) – Bank for International Settlements (BIS) Triennial Central Bank Survey of Foreign exchange turnover. Constituents Index constituents are a set of top currencies based on trading and liquidity. The weightings of index constituents are a function of both trading and liquidity. (see Fig. 2 below) . Exclusions Currencies pegged to the US Dollar. Currencies with weights of less than 2% . Exceptions Offshore Chinese Renminbi (CNH) has its exposure capped to 7% . Notable changes in the 2024 Rebalance • There was no change to the ranking order of currencies in the index. • EUR remained the highest weight and increased by 0.14% to 29.28% . • CAD, CHF, JPY, KRW, and SGD all had their weights decreased, the largest being JPY at-0.21% . Composition Effective after the close of June 28, 2024, see Fig.1 below. | Currency | | Region | 2024 Weight | 2023 Weight | Difference | | --- | --- | --- | --- | --- | --- | | Euro | EUR | EMEA | 29.28% | 29.14% | +0.14% | | Japanese Yen | JPY | APAC | 12.61% | 12.82% | -0.21% | | Canadian Dollar | CAD | AMER | 11.54% | 11.55% | -0.01% | | British Pound Sterling | GBP | EMEA | 10.19% | 10.16% | +0.03% | | Mexican Peso | MXN | AMER | 9.41% | 9.31% | +0.10% | | Offshore Chinese Renminbi | CNH | APAC | 7.00% | 7.00% | +0.00% | | Swiss Franc | CHF | EMEA | 4.72% | 4.81% | -0.09% | | Australian Dollar | AUD | APAC | 4.39% | 4.35% | +0.04% | | South Korean Won | KRW | APAC | 3.26% | 3.27% | -0.01% | | Indian Rupee | INR | APAC | 2.81% | 2.73% | +0.08% | | Singapore Dollar | SGD | APAC | 2.52% | 2.61% | -0.09% | | Taiwan Dollar | TWD | APAC | 2.28% | 2.25% | +0.03% | Fig. 1 Rankings Effective after the close of June 28, 2024. • Liquidity ranking remained the same and will remain so until the next BIS survey due in 2025. • Trade ranking changed slightly from 2023 with Mexico increasing to 2nd rank swapping places with Offshore Chinese Renminbi (CNH) which dropped to 3rd. • Swiss Franc dropped a rank to 9th and Indian Rupee gained one place from 9th to 8th, leaving all other rankings unchanged. | Currency | | Region | 2024 Weight | Liquidity Rank * | Trade Rank ** | | --- | --- | --- | --- | --- | --- | | Euro | EUR | EMEA | 29.28% | 1 | 1 | | Japanese Yen | JPY | APAC | 12.61% | 2 | 5 | | Canadian Dollar | CAD | AMER | 11.54% | 6 | 4 | | British Pound Sterling | GBP | EMEA | 10.19% | 3 | 6 | | Mexican Peso | MXN | AMER | 9.41% | 15 | 2 | | Offshore Chinese Renminbi | CNH | APAC | 7.00% | 4 | 3 | | Swiss Franc | CHF | EMEA | 4.72% | 7 | 9 | | Australian Dollar | AUD | APAC | 4.39% | 5 | 16 | | South Korean Won | KRW | APAC | 3.26% | 11 | 7 | | Indian Rupee | INR | APAC | 2.81% | 14 | 8 | | Singapore Dollar | SGD | APAC | 2.52% | 9 | 12 | | Taiwan Dollar | TWD | APAC | 2.28% | 16 | 10 | Fig. 2 * BIS 2022 ** Fed Reserve 2024 Regional Split Effective after the close of June 28, 2024. • Currencies from Asia-Pacific region constitute 34.87%, a slight decrease from 35.03% in 2023. • This decrease was split almost evenly between a gain of +0.07% in European currencies, which remain the largest weight at 44.18%, and the Americas region gain of +0.09%, comprising the Canadian dollar

FAQs

How does the BBDXY determine its currency basket?

BBDXY tracks leading global currencies versus the U.S. Dollar. Constituent weights are driven by both trading (50%) and liquidity (50%) measures, reflecting major trade flows and survey-based turnover.

When does the index rebalance, and what is excluded?

The index rebalances once a year on the last business day of June. It excludes currencies pegged to the U.S. Dollar, and it also applies a weight threshold of less than 2%.

What were the notable changes in the 2024 rebalance?

There was no change to the ranking order. EUR remained the highest weight and increased by 0.14% to 29.28%, while several currencies saw weight decreases, with JPY decreasing the most at -0.21%.

Oct 12, 2026

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