Bonds tell us before stocks do

Conclusion

On October 15, the Nikkei Stock Average fell by 3,318 yen. It was the third-largest drop in history. The trigger was not the earnings of Japanese companies or the Bank of Japan, but the corporate bond of a single U.S. company.
Corporate bonds are “company debt.” They have a seesaw relationship where when prices fall, yields rise, and rising yields are the market’s way of saying, “It might not be paid back.”
Bondholders get their money back before shareholders. Therefore, by the time they start to get anxious, stocks are even more dangerous. Bonds move before stocks.

First, what happened?

On October 13, it became a topic of conversation that the yield on corporate bonds of a U.S. company called CoreWeave reached **15%**.

CoreWeave is a cloud provider for AI. It lines up a massive number of GPUs (semiconductors used for AI calculations) in data centers and lends computing power to AI companies.

The following day, the company’s stock price fell by 15.46%. The price of its corporate bonds fell to $79.50 against a face value of $100.

Then, on the 15th, Japan time, the Nikkei Stock Average fell by 3,318 yen in the Tokyo market. Advantest alone pushed the index down by about 1,303 yen.

Japanese semiconductor-related stocks were sold off because of the debt of a single U.S. company.

To understand this path, we must first understand corporate bonds themselves.

① What are corporate bonds?

Corporate bonds are IOUs issued when a company borrows money directly from investors.

Instead of borrowing from a bank, they reach out to the market saying, “Won’t you lend to us?” and collect small amounts from many investors.

The difference from stocks is entirely here.

Stock Corporate Bond Nature Company equity Loan to company Person holding it Shareholder (owner) Creditor (lender) What is received Dividends (depending on performance) Interest (predetermined amount) Maturity None Yes (3 years, 5 years, 10 years, etc.) Principal Does not return (must sell) Face value returns at maturity If the company makes a profit, it increases without limit Does not increase (interest is fixed) If the company goes bankrupt Almost zero Receives distribution before shareholders

The last two lines are decisive.

People who hold corporate bonds do not get a larger share no matter how much profit the company makes. Therefore, what they are looking at is not growth potential, but only one thing.

Will the money be returned as promised?

While shareholders dream, bondholders look only at “repayment capacity.” They are grading the same company from completely different angles.

② Price and yield are like a seesaw

This is the biggest hurdle in reading corporate bond news. It is difficult for everyone at first, so let’s use concrete numbers.

Let’s take CoreWeave’s 2032 maturity corporate bond as an example.

If you buy it at the face value of $100

You receive $9.625 every year, and $100 is returned at maturity.

Yield = 9.625 ÷ 100 = 9.625%

If you buy it after the price has fallen to $79.5 in the market

Interest is paid based on the face value, so the amount remains $9.625. Furthermore, at maturity, $100 is returned for what you bought for $79.5.

Combining these two, the yield becomes approximately 15%.

Therefore, it works like this

Corporate bond price Yield Market view Rises Falls Became safer Falls Rises Became riskier

A 15% yield does not mean it is a “profitable bond that pays 15% per year.” It means that the risk of not being paid back is being recognized to the point where no one would buy it unless it paid 15% per year.

If you see “corporate bond yields soar” in the news, please read it as a question mark being placed on that company’s cash flow.

Incidentally, in the market, the level where unsecured corporate bonds fall below 80% of face value is spoken of as a warning line. CoreWeave’s $79.5 was a figure that had just fallen below that.

③ Why do bonds move first?

There are two reasons.

Reason 1 | Because the order of repayment is fixed

When a company goes under, there is a set order for the distribution of assets.

Rank Who 1 Banks with collateral 2Bondholders (unsecured) 3 Preferred shareholders 4Common shareholders

Shareholders are at the very end. Because they are in the position of receiving what is left over their value disappears first when a company gets into trouble.

This means the following happens.

If those who can collect before you (bondholders) start saying “it might not come back,” the shareholders lined up behind them are in even greater danger.

This is the true nature of why “bonds tell us before stocks do.”

Reason 2 | Because the people watching are different

Participants in the bond market are mainly institutional investors such as pension funds and insurance companies. Their job is to “not lose the principal,” and they read corporate financial statements in detail.

On the other hand, there are many people in the stock market who buy with the expectation that “this company will become amazing in the future.”

Stocks buy expectations, while bonds look at repayment capacity. Even with the same bad news, the bond market reacts faster and more coldly.

4. What kind of money is driving AI investment?

This is where we get to the heart of this event.

Data centers for AI operate in this order.

First, buy GPUs and data centers (huge expenditures come first)
Then, lease them to AI companies and receive usage fees (income comes later)

Expenditures come first, and income comes later. What fills this gap is debt.

Let’s list CoreWeave’s fundraising.

Period Content Coupon Rate August 2023 Loan collateralized by GPUs, etc. $2.3 billion effective approx. 15% May 2025 Corporate bond $2.0 billion 9.25% July 2025 Corporate bond $1.75 billion 9.00% April 2026 Corporate bond $2.75 billion 9.75% June 2026 Corporate bond $1.25 billion 9.625%

What I want you to pay attention to is the level of interest rates.

When the yield on 10-year U.S. Treasury bonds is in the 4% range, this company is borrowing at the 9% range. The 5-point difference is proof that the market judged from the start that lending to this company is riskier than lending to the government.

And the 2023 loan is collateralized by the GPUs themselves. They are doing the same thing with semiconductors that you do when you take out a mortgage with your house as collateral.

This structure has a clear weakness.

The collateralized GPUs lose value as technology advances (unlike land)
The interest rate at that time is applied every time the loan is refinanced
In a rising interest rate environment, interest payments become heavier

On October 14, the U.S. Consumer Price Index for September came in at 3.7% year-on-year, exceeding expectations and strengthening expectations for interest rate hikes. This time, anxiety over funding and rising interest rates coincided in the same week.

⑤ Why did it spread to Japanese stocks?

Let’s return to Japan. The path is as follows.

Investment in AI data centers is partly supported by debt → That debt might become harder to obtain → If so, capital investment itself for data centers might shrink → Who is selling that equipment?

Japanese semiconductor manufacturing equipment manufacturers and component manufacturers are exactly those sellers.

That is why the story of one U.S. company’s corporate bond became a sell-off of semiconductor-related stocks in the Tokyo market.

What I want to emphasize here is that the reason for the sell-off was not AI demand. It was not a story about “AI no longer being used,” but rather a story about “the source of funds for AI investment being shaken.”

Using the “5 lenses” I usually use (① Cost ② Demand ③ Interest Rates ④ Regulation/Policy ⑤ Psychology), this time it was ③ Interest Rates and ⑤ Psychology. For those looking through the lens of ② Demand, this decline cannot be explained.

Even with the same decline, separate which lens it occurred through. If you can do that, what you need to check next will change.

⑥ What individuals can look at

The reality is that professional bond data is difficult for individuals to access. However, just by changing how you read the news, you can understand quite a lot.

Three terms to remember

Term MeaningCorporate bond yield The higher it is, the more the market views the company as riskyCredit spread Corporate bond yield – Government bond yield. This difference is the “price of risk”High-yield bond Corporate bonds of companies with low credit ratings. Also called “junk bonds.” Serves as a thermometer for the entire market

Actual procedure

If you see terms like “corporate bonds“, “yield“, “spread widening“, or “downgrade” in the news, stop and take notice.
Consider whether that company is a customer or a business partner in the industry you are watching.
News of downgrades or “outlook changed to negative” by rating agencies (Moody’s, S&P) is the same kind of signal.

In short, if you only follow stock news, you will miss it. that is what it means.

⑦ Things to be careful about

I will be honest here.

Bond warnings are often wrong.

It is often said that “the bond market is smarter than the stock market,” but it is not always right..

In the past, there have been many cases where the bond market was anxious but nothing happened. Conversely, there have been companies that went bankrupt without the bond market issuing any warnings.

Moving fast does not mean being accurate. It just means being fast.

“Dangerous” and “bankrupt” are different things.

Just because a yield has reached 15% does not mean that the company is destined to go bankrupt.

If a company can continue to raise funds even at high interest rates, its business will continue to run, and sometimes parent companies or major clients will support it. Market evaluations often swing back and forth.

Corporate bond yields are a “market view,” not a “fixed future.”

Is it a problem for one company or the whole industry?

This is the most important distinction.

If it is a problem for one company, it ends with that company’s cash flow issues.
If it is a problem for the entire industry, it will spread to other companies borrowing under the same structure.

Whether this is the case this time will become clear based on the terms under which other companies, which are also investing in data centers, are able to raise funds in the future. At this point, it is impossible to conclude which one it is.

Key points of this article

When stock prices drop suddenly, look outside the stock market. Corporate bonds, interest rates, and foreign exchange. Stocks often react to markets that moved before they did.

When you “don’t know why it dropped,” the answer may not be in the stock market news. This time, it was the price of a company’s IOU.

Summary Table

Term Meaning Corporate Bond An IOU for a company to borrow money directly from investors Face Value The amount returned at maturity. Usually 100 Coupon Rate The rate of interest paid annually relative to the face value. Fixed at issuance Yield The actual rate of return when purchased at the current price. Moves inversely to price Credit Spread Corporate bond yield – Government bond yield. The “price of risk” as seen by the market. Seniority Secured loans → Corporate bonds → Preferred stock → Common stock. Shareholders are last High-Yield Bond Corporate bonds of companies with low credit ratings. A gauge of the market’s overall risk tolerance

It wasn’t Japanese stocks that fell 5.4% | What actually happened during the 3rd worst crash week in history
Which industries gain and lose when interest rates rise | From the mechanics to winners and losers by industry
Why stock prices fall even with good earnings | Stocks move based on the “difference from expectations”

#StockClub #InvestmentBeginner #MoneyStudy #Bonds #AI

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