Treasury Yields Surge as Iran Tensions and Fiscal Risks Pressure Global Markets | Bitunix Market Update

August 18, 2026 — Financial markets are navigating a complex environment where geopolitical risks, rising long-term interest rates, and fiscal concerns are increasingly influencing asset valuations.

While expectations for Federal Reserve policy have shifted toward a stable rate outlook, long-term Treasury yields continue rising due to concerns over government debt supply, weaker foreign demand, and inflation risks. At the same time, developments surrounding U.S.-Iran tensions and the Strait of Hormuz create additional uncertainty for energy prices and global inflation.

For Bitcoin and other high-volatility assets, the key market driver is no longer only the direction of Fed policy rates, but whether long-term funding costs and risk premiums continue increasing.

U.S. Treasury Yields Approach 20-Year High as Fiscal Pressure Builds

Global markets are facing three major sources of uncertainty:

• Rising U.S.-Iran geopolitical tensions

• Higher long-term U.S. Treasury yields

• Renewed repricing of Federal Reserve policy expectations

The 30-year U.S. Treasury yield climbed to 5.31%, reaching its highest level since 2007.

At the same time, Japan, the UK, and China reduced their U.S. Treasury holdings in June, highlighting several challenges facing long-duration government bonds:

• Increasing fiscal supply

• Lower foreign demand

• Persistent inflation concerns

These factors are creating additional pressure on long-term Treasury yields and increasing the cost of capital across global markets.

Strait of Hormuz Risks Raise Concerns Over Oil Prices and Inflation

Geopolitical uncertainty is adding another layer of complexity to the global inflation outlook.

After the expiration of the 60-day U.S.-Iran understanding, Trump stated that he was not seeking an extension and warned that military action could be considered if Oman obstructed U.S. efforts to restore shipping through the Strait of Hormuz.

Meanwhile, Iran stated that its policy had shifted from a defensive posture toward a more offensive approach and called for the U.S. to fulfill its commitments within weeks.

If diplomatic negotiations continue to deteriorate, risks surrounding:

• Strait of Hormuz shipping

• Global crude supply

• Energy prices

could intensify.

Higher energy costs could then transmit inflation pressure into global interest rates and risk asset valuations.

Stable Fed Rate Expectations Do Not Guarantee Easier Financial Conditions

Market expectations for Federal Reserve policy have become increasingly stable.

A Reuters poll showed:

• 90% of economists expect the Fed to keep rates unchanged in September

• Around 80% expect no rate adjustment for the remainder of the year

However, stable short-term rates do not necessarily mean financial conditions are becoming easier.

The market is increasingly separating two factors:

Short-term rates

• Mainly influenced by economic data

• Closely tied to Fed policy decisions

Long-term yields

• Driven by fiscal deficits

• Treasury supply dynamics

• Inflation expectations

• Market risk premiums

Therefore, the absence of another Fed rate hike does not automatically reduce borrowing costs. Long-term funding conditions can remain restrictive even without additional monetary tightening.

Gold Reflects Rising Concerns Over Fiscal Sustainability and Risk Premiums

Gold prices have remained supported by:

• Growing fiscal concerns

• Continued purchases from global central banks

• Increased demand for defensive assets

The strength of gold reflects a broader market theme: rising concerns over U.S. debt levels, interest expenses, and Treasury issuance.

Even if monetary policy does not become more restrictive, investors may continue demanding higher risk premiums for long-term rates and dollar-denominated assets.

This dynamic suggests that fiscal conditions are becoming an increasingly important factor in global asset pricing.

Low Volatility Masks Growing Risks Across Equity Markets

Equity markets are showing a notable divergence between market pricing and underlying risks.

Current market conditions include:

• VIX falling to a year-to-date low of 14.2

• S&P 500 gaining approximately 16% year to date

• Equity funds recording inflows for 12 consecutive weeks

However, these positive signals exist alongside:

• Rising long-term Treasury yields

• Signs of weaker consumer conditions

• Intensifying Middle East geopolitical risks

The gap between low implied volatility and elevated macro risks suggests that the market's vulnerability may not come from a single event, but from a potential mismatch between current valuations and underlying conditions.

Crypto Markets Face Pressure From Liquidity and Treasury Yield Risks

Crypto markets are also showing mixed capital signals.

Crypto ETFs recorded:

• Approximately $90.55 million in weekly net outflows

• Around $977 million in monthly net inflows

• Approximately $5.406 billion in quarterly net outflows

This indicates that short-term capital momentum remains fragmented.

For Bitcoin and other high-volatility assets, market direction remains highly sensitive to:

• U.S. dollar liquidity

• Long-term Treasury yields

• Global risk appetite

• Changes in financial conditions

As long-term yields remain elevated, higher discount rates may continue creating pressure on speculative assets.

Long-Term Funding Costs Become the Key Market Driver

The central question for markets is no longer simply whether the Federal Reserve raises or cuts rates.

Instead, investors are increasingly focused on whether:

• Long-term Treasury yields continue rising

• U.S.-Iran tensions develop into a sustained energy shock

• Inflation risks return

• Global risk premiums expand further

If the 30-year Treasury yield remains elevated while energy prices rise due to Strait of Hormuz disruptions, equities, cryptocurrencies, and other high-valuation assets could face increasing pressure.

Conversely, easing geopolitical tensions, moderating inflation, and stabilizing Treasury yields could provide additional support for risk assets.