Bitcoin just posted its best September in over a decade while government bonds hit yields unseen since 2002, a combination that defies almost every rule of how investors are supposed to behave. Something has to give.
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In the week ending September 29, 2026, crypto investment funds attracted $3.55 billion, marking their largest weekly inflow of the year, according to CoinShares. Among these, Bitcoin (CRYPTO: BTC) funds alone accounted for $2.52 billion. Just one day later, the 10-year Treasury yield surged to 5.31%, reaching its peak since 2002.
Normally, these two events do not occur simultaneously. Typically, money flows out of non-interest-bearing assets like Bitcoin when government bonds offer their highest rates in years. As of October 3, Bitcoin is trading near $84,600. So why does it seem like Bitcoin is ignoring the bond market?
The 10-Year Treasury Yield Hit Its Highest Level Since 2002
The 10-year Treasury yield represents the annual return that investors earn by lending money to the U.S. government for ten years. Considered one of the safest investments, this yield influences rates on mortgages, car loans, and corporate borrowing.
In September alone, the yield rose 0.55 percentage points, surpassing its previous peak of 5.26% in 2007. Factors like anticipated Federal Reserve rate hikes, high energy prices, and a rising U.S. national debt have all contributed to this increase.
In this climate, Bitcoin faces an uphill battle. Unlike government bonds, which offer a safe return of 5.31%, Bitcoin pays no interest or dividends. Its appeal rests entirely on potential price appreciation.
Bitcoin Rose About 10% in September Even as Yields Jumped
Despite the rising yields, Bitcoin performed notably well. In September, it gained approximately 10%, marking its best September since 2012, even as the Federal Reserve raised interest rates on September 16 and yields continued to climb.
Much of this rally can be attributed to fund buyers. U.S. spot Bitcoin exchange-traded funds (ETFs), which hold Bitcoin and trade like stocks, brought in about $2.4 billion within just five trading days through September 25. Additionally, Ethereum funds added $702 million during the week CoinShares tracked.
However, a single week of inflows doesn’t guarantee sustained demand. This growth could reflect a mix of long-term buyers, traders adjusting short-term positions, and portfolio rebalancing. Lasting conviction typically shows up over months of consistent buying.
Bitcoin Has Paid for High Yields Over the Past Year
Over the longer term, the bond market’s influence becomes clearer. Bitcoin has declined about 30% over the past year and around 5% year-to-date for 2026. In contrast, those who invested in Treasury bonds earned interest month after month. Anyone who purchased Bitcoin a year ago is still facing significant losses.
Bitcoin’s temporary price strength is evident only over shorter periods. It has risen about 33% in the last 90 days, making the third quarter a strong rebound amid an otherwise challenging year rather than indicating that Bitcoin is unaffected by rising interest rates.
Moreover, the timing of these inflows is key. The $3.55 billion in inflows occurred before the yield reached 5.31% on September 30, and Bitcoin funds reported outflows of $148.7 million the same day. Bitcoin then dipped by 2% in the 24 hours leading up to October 3.
Is Bitcoin Ignoring the Bond Market?
In reality, Bitcoin is not ignoring the bond market. While it did achieve a 10% gain in September amid rising yields, it has still dropped nearly 30% over a year marked by high rates, and its funds experienced outflows the day yields hit a 24-year high.
Viewing September’s performance as a definitive shift away from bonds overlooks the fact that its recent rally has been driven by fund purchases that could diminish quickly.
The upcoming weeks will be telling. If the 10-year yield rises further above 5.31% and weekly fund flows turn negative, Bitcoin may lose much of its September gains. Conversely, if inflows continue while yields remain elevated, Bitcoin could prove that it can thrive in this high-rate environment and even approach the $100,000 mark.
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