Bitcoin traded at $78,400 on August 31 as two macro pressures built around the monthly close: the Japanese yen breached 160 per U.S. dollar in Tokyo trading, and a U.S. strike on Iran's Larak Island added to market uncertainty.

Both developments followed Friday's broad dollar advance and hawkish remarks from Warsh at Jackson Hole, which had lifted expectations for a Federal Reserve rate hike. For Bitcoin, that matters because the cryptocurrency has increasingly traded as a risk asset sensitive to U.S. monetary policy: higher rate expectations tend to weigh on liquidity-driven assets, while easing expectations have historically supported them.

The total crypto market capitalization stood at $2.71 trillion, down 0.5% over the past 24 hours, with daily trading volume exceeding $78.9 billion.

$BTC might be setting up for another cycle repeat.

The last two major downtrends lasted roughly a year before turning into massive expansions.

2018–19 led to +2000%
2022–23 led to +700%

Now we're seeing a similar structure again. My base case is this correction cycle wraps up… pic.twitter.com/zc68ZHifFR

— Wealthmanager (@Wealthmanager) August 31, 2026 (https://x.com/Wealthmanager/status/2094429963998904526?ref_src=twsrc%5Etfw)

ETF Flows and Rate Expectations

Bond investors had been pricing in a Federal Reserve positioned to hike, and the resulting repricing had pulled institutional money out of Bitcoin ETFs across May and June, according to the Cryptonews report. Spot Bitcoin ETFs, approved in the U.S. in January 2024, have become one of the main channels for institutional exposure to Bitcoin, which is why their flow trends are watched as a proxy for that segment of demand.

Monday was the final trading session of August, making the month's closing ETF total a focal point for whether an eight-day Bitcoin ETF inflow run had survived the change in rate expectations.

CoinDesk identified August's total ETF closing flow as the more immediate crypto-market indicator. The result was expected to provide a clearer view of whether the recent inflow run had continued or ended as rate expectations shifted.

(Source: CoinGlass — )

Dollar, Yen and Geopolitical Risk Complicate Bitcoin's Outlook

The yen's move beyond 160 per dollar followed Friday's broad dollar advance and hawkish remarks from Warsh at Jackson Hole.

U.S. Treasury Secretary Scott Bessent said Sunday that recent yen moves had been contained and did not warrant a joint U.S.-Japan intervention like the one seen last month. On Friday, he had warned that a disorderly yen market could feed through to higher U.S. interest rates.

That connection places Tokyo's currency market alongside Wall Street's rate expectations and the crypto market's positioning. The yen has long been used as a funding currency for investments in U.S. stocks and Treasury notes, meaning sharp yen swings can force investors to unwind positions built with borrowed yen, transmitting volatility across global markets, including crypto.

The U.S. strike on Iran's Larak Island added another macro risk alongside yen weakness and higher rate expectations. Larak Island sits near the Strait of Hormuz, a chokepoint for a large share of the world's seaborne oil trade, which is why incidents there quickly translate into oil-price moves. Reuters reported that oil rose as Gulf tensions flared and U.S. equities fell, while Bitcoin's response was comparatively muted, with its daily loss remaining under 1%.

The wider crypto market showed mixed performance. Solana and Dogecoin each fell roughly 3% on the day, while Ether, BNB, Zcash and Tron were within 2% of flat. On a weekly basis, Solana was up about 8%, while Dogecoin was down roughly 10%.

U.S. Treasury Secretary Bessent says his "belief is that the Japanese government and BOJ will do things that will lead to a stronger yen." pic.twitter.com/8uXtMFbnGn

— Shay Boloor (@StockSavvyShay) August 31, 2026 (https://x.com/StockSavvyShay/status/2094439329343091011?ref_src=twsrc%5Etfw)

What Could Shape Bitcoin's Next Move?

Reuters reported that investors were turning to upcoming U.S. data, including the nonfarm payrolls report and consumer inflation figures, which could shape expectations ahead of the September Fed meeting.

The dollar's direction, the yen's movement near intervention-sensitive levels, and the path of rate expectations remain key variables for risk assets, including Bitcoin. Bitcoin remained near $78,000 amid these competing market pressures.