Capital flows

Capital flows explained: how cross border investment is measured, what drives emerging market flows, and Jonathan Fortun’s research on currencies and financing conditions.

Capital flows connect investment decisions in one economy with financing conditions in another. This page brings together an introduction to their measurement and Jonathan Fortun’s research on emerging markets, exchange rates and the transmission of global financial conditions. The publication archive below links to the original work and distinguishes authored research from media commentary.

What are capital flows?

Capital flows are cross border financial transactions: for example, an investor buying another country’s bonds, a company financing an overseas operation or a bank making a foreign loan. The category matters. Direct investment, portfolio investment and bank related flows describe different relationships and can behave differently. A portfolio flow estimate is therefore not a measure of every form of international financing.

A useful first question is whose activity a number describes. Nonresident purchases of domestic assets and residents’ purchases of foreign assets are different sides of the external financial relationship. Even a series called “inflows” may already subtract sales from purchases within its category. Read its definition before comparing it with a net flow total.

Flows, stocks and country coverage

A flow covers a period; a stock describes a position at a date. A change in the value of foreign holdings can reflect prices and exchange rates as well as transactions. It should not automatically be interpreted as new money entering or leaving a country.

Country definitions also matter. Residence locates an entity in an economy; nationality can group it with the country of its controlling parent. The BIS explanation of residence and nationality shows why the two perspectives answer different questions. Before comparing regional totals, check which countries, investors and instruments are included.

What drives emerging market capital flows?

Analysis often separates global “push” factors, such as international financial conditions, from domestic “pull” factors, such as an economy’s outlook and institutions. Their relative importance can change across periods and types of investment. The IMF literature survey on capital flow determinants provides a starting point for this distinction.

For a particular episode, the analytical task is to connect the financing decision to the receiving economy. Is a change broad across markets or concentrated in a few countries? Does it concern equity or debt? Does the adjustment appear in an exchange rate, a borrowing cost or the quantity of financing available? These questions are more informative than treating every rise in inflows as the same economic event.

How to read timely flow estimates

High frequency indicators can help track developments before full balance of payments statistics arrive. Their coverage and construction differ, so they are not interchangeable. The IMF guide to capital flow data discusses these measurement differences and the use of timely portfolio flow proxies.

For any release, identify its observation period, publication date, country universe and revision policy. Compare like with like: a monthly estimate with another monthly estimate, and the same investment category with itself. When a source revises history, retain the distinction between the original reading and the latest estimate. A timely signal can be useful without being a complete picture.

Sovereign issuance is a different measure

Bond issuance describes securities being created; investor flow measures describe investment transactions. Gross issuance can include refinancing. Net issuance deducts redemptions, as set out in the BIS securities glossary. Neither number alone establishes who bought the bonds or the economy’s total net capital inflow.

Research, attribution and further reading

Jonathan Fortun’s work connects portfolio allocation with exchange rates, external balances and financing conditions. Follow the dated publications and commentary below for the argument and evidence behind a specific episode. Institutional research retains its publisher and coauthors; a journalist quoting Jonathan remains the author of that reporting.

The Japan research theme examines another perspective on international capital allocation. The Bolivia economy theme follows monetary and foreign exchange constraints in a receiving economy. The professional biography connects these interests, and the press kit provides attribution for interviews and introductions. This reference page does not redistribute the IIF’s underlying datasets.

Research and public conversation

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October 7, 2026IIF

IIF Capital Flows Tracker: October 2026

Jonathan Fortun examines why portfolio flows to emerging markets reversed in September. Flows fell to a net outflow of $26.3 bn from an $11.4 bn inflow in August, the first outflow since June, as a hawkish Fed pushed up U.S. real yields and the dollar. Equities drove the swing with $19.2 bn of outflows, mostly heavy foreign selling of Korean shares, while debt flows were negative at $7.0 bn once hard currency demand faded and credit spreads widened late in the month. The note concludes that Fed projections of further hikes, a BoJ at its highest rate since 1995 and tightening across advanced economies raise the bar for EM carry in the fourth quarter.

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October 1, 2026IIF

IIF Global Macro Views: AI and the Price of Long-Term Capital

Marcello Estevão and Jonathan Fortun examine how the AI investment boom may affect the cost of long term capital. Five AI intensive companies raised $157 billion through August 2026, adding $108 billion in ten year equivalents, about one fifth of long end Treasury supply. Bond markets absorbed this duration without lasting borrower specific repricing, but the authors argue that stronger investment can still raise the common real rate. Emerging markets may face costlier dollar financing even as countries able to host AI infrastructure attract capital.

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September 24, 2026

Financial Times Quoted expert

Emerging markets shrug off Iran war in record foreign borrowing spree

Emerging market governments are issuing foreign currency bonds at a record pace despite the Iran war, higher global interest rates and a stronger dollar. Jonathan Fortun tells the Financial Times that investors increasingly see the asset class as safer. He distinguishes gross issuance from fresh financing, noting that only $72 billion of this year’s total will represent new money rather than refinancing. The reporting also examines the shift toward euro borrowing and efforts to rebuild foreign exchange reserves.

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September 12, 2026

Investing.com Quoted expert

Foreign investors put $11.3 billion into emerging markets in August

Emerging markets received $11.3 billion in portfolio inflows in August, almost entirely through debt, while equity investment remained weak. Investing.com cites Jonathan Fortun’s assessment that continued inflows despite rising US long term yields point to investors selecting emerging market assets on their own merits. The article examines the contrast between resilient debt demand and a slower overall pace of inflows.

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September 11, 2026IIF

IIF Capital Flows Tracker: September 2026

Emerging markets attracted $11.3 billion in portfolio inflows in August, with debt accounting for almost all of the total despite high US bond yields and no sovereign issuance. Equity purchases in Taiwan and India offset selling elsewhere. Jonathan Fortun examines whether demand for emerging market debt can withstand upcoming Federal Reserve and Bank of Japan decisions and the return of new issuance.

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September 10, 2026

Central Banking Quoted expert

Bolivia sells $35m to stabilise local currency

Bolivia’s central bank sold $35 million as it sought to reduce exchange rate volatility. Jonathan Fortun tells Central Banking that the parallel market was already pricing a stronger boliviano than the official fixing, interpreting the sale as an adjustment toward market pricing. His comments connect currency intervention with the competing need to accumulate foreign exchange reserves under the proposed IMF program.

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September 10, 2026

Stuck in the Loop, Part IX: The Step They Left for Last

Bolivia’s IMF program has advanced on exchange rate reform and central bank financing, but fuel pricing remains its hardest political test. Jonathan Fortun examines how currency depreciation and import costs have eroded earlier subsidy reforms, arguing that postponement can shift the adjustment from higher pump prices to shortages. The essay connects reform sequencing with the credibility of the 2027 budget.

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