According to the Treasury International Capital data released by the U.S. Department of the Treasury on Monday, March 2026 saw a significant influx of capital into the United States, totaling $150.7 billion in net TIC inflows. This figure represents the combined total of net foreign acquisitions across several categories, including long-term securities, short-term U.S. securities, and banking flows.
Analysis of Capital Flows
The composition of these inflows suggests strong interest from private entities. Net foreign private inflows were reported at $162.1 billion, which contrasted with net foreign official outflows that totaled $11.4 billion. This indicates a heavy reliance on private capital to drive the net positive balance.
A breakdown of long-term U.S. securities shows that foreign residents expanded their holdings during March through net purchases of $96.5 billion. Within this segment, private foreign investors were primary drivers with net purchases totaling $111.4 billion. Conversely, foreign official institutions acted as sellers, recording net sales of $14.9 billion.
On the domestic side, U.S. residents also engaged in international security markets, increasing their holdings of long-term foreign securities through net purchases of $15.2 billion. When accounting for adjustments - such as estimated foreign portfolio acquisitions of U.S. equities via stock swaps - the overall net foreign purchases of long-term securities stood at $81.3 billion for the month.
Short-Term Securities and Banking Dynamics
The data also highlighted shifts in short-term instruments. Foreign residents reduced their positions in U.S. Treasury bills, with a net decrease of $16.8 billion. However, when looking at the broader category of all dollar-denominated short-term U.S. securities and other custody liabilities, foreign resident holdings actually saw an increase of $1.3 billion.
Furthermore, banking sector data indicated that banks' own net dollar-denominated liabilities to foreign residents rose by $68.1 billion during the period.
Key Market Indicators
- Strong Private Demand for Long-Term Debt: The massive $111.4 billion in net purchases by private foreign investors suggests robust appetite for long-term U.S. assets, which impacts interest rate environments and the fixed-income market.
- Divergence in Official vs. Private Flows: The distinction between private inflows ($162.1 billion) and official outflows ($11.4 billion) shows that private capital is currently the primary engine for these net inflows.
- Expansion of Banking Liabilities: The $68.1 billion increase in banks' net dollar-denominated liabilities to foreign residents points to significant activity within the banking sector's international obligations.
Risks and Uncertainties
- Official Sector Selling: Foreign official institutions recorded net sales of $14.9 billion in long-term securities, representing a departure from the purchasing trends seen in the private sector.
- Treasury Bill Reductions: The $16.8 billion decrease in foreign resident holdings of U.S. Treasury bills reflects a shift away from certain short-term instruments.
The Treasury Department is scheduled to release the next set of TIC data, covering April 2026 figures, on June 18, 2026.