Japan’s Nikkei Crosses 69,700, but Tomorrow Brings Rate Risk

Japan’s Nikkei crossed 69,700 for the first time. It hit an intraday high of 69,705 on Monday, climbing over 5% as a US-Iran agreement to end their war ignited a broader stock market rally. 

The benchmark added roughly $465 billion, or 77.22 trillion yen, in market value. At press time, Nikkei stood at 69,234.

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US-Iran Deal Triggers a Wider Stock Market Rally

President Donald Trump’s announcement of a deal to end the conflict lifted equities. The agreement halts the US naval blockade of Iran and reopens the Strait of Hormuz, a key oil route.

The agreement will be signed in Switzerland on Friday. Crude prices fell on the news, with West Texas Intermediate down about 4.6% and Brent Crude off roughly 5%.

Stocks and crypto moved in the opposite direction. US equity futures pointed sharply higher, with Dow Jones Industrial Average futures up 342 points, or 0.7%. Contracts tied to the S&P 500 gained 0.9%, and Nasdaq 100 futures led the way with a 1.4% rise.

Asian benchmarks posted the day’s biggest moves. South Korea’s KOSPI topped the region with a 5.46% surge. Japan’s Topix climbed 3.3%.

Digital assets also joined the advance. The total crypto market capitalization rose close to 2%, and Bitcoin (BTC) pushed toward 66,000.

The Rate Decision That Could Reverse The Rally

Nonetheless, sentiment could shift quickly. The Bank of Japan (BOJ) is widely expected to raise its policy rate to 1% from 0.75% on Tuesday.

Japan has triggered 4 market selloffs since 2024.Tomorrow could be the fifth.Tomorrow, June 16. The Bank of Japan announces its rate decision. 49 of 51 economists surveyed by Bloomberg expect a hike from 0.75% to 1%. Market probability is above 90%. If confirmed, it marks… pic.twitter.com/Q24gvm97FS

— Bull Theory (@BullTheoryio) June 15, 2026

Higher Japanese interest rates reduce the appeal of the yen-funded carry trade by increasing borrowing costs and narrowing the yield advantage available in overseas markets. In this strategy, investors borrow yen at low rates and invest the proceeds in higher-yielding assets abroad, including equities, bonds, and cryptocurrencies.

As carry trades become less profitable, investors may reduce leverage and repatriate capital to Japan, potentially weighing on global equity markets and other risk assets.

Because markets have largely priced in a rate increase, investors may focus more on the BOJ’s guidance than the hike itself. A Reuters poll showed that economists expect the BOJ to follow up with another hike to 1.25% in the fourth quarter. 

Any signal that policymakers intend to tighten policy more aggressively than expected could pressure stocks, cryptocurrencies, and other risk-sensitive assets by accelerating the unwind of yen-funded positions.

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