TSMC posted its sixth straight quarter of record earnings, so why do semiconductor stocks keep falling? The semiconductor index has fallen nine days in a row. Is this a sign we're near a bottom?
2026-10-17
The price of borrowed money, not strong earnings, sets the share price
TSMC posted its sixth straight quarter of record earnings, with net income up about 69%. Yet chip stocks fell. This shows that AI infrastructure investment runs on borrowed money, not earned money.
Why earnings can't support the share price
- The AI data center business requires heavy upfront investment and is slow to pay back. Profits are concentrated in the distant future, so when the discount rate rises, present value is cut sharply.
- The 10-year yield is 5.098% and the 30-year is 5.436%. The same future earnings are valued much lower at a 5% discount rate than at 4%.
- Neoclouds (CoreWeave and others) buy GPUs with bonds. A five-year CDS spiking to a record high means funding costs may rise or funding may be cut off. If they cut chip orders, the demand outlook for TSMC and memory makers changes.
- So the market is now asking not 'how much did TSMC earn?' but 'can TSMC's customers keep borrowing?'
What nine straight down days tell us
As of the report, SOXX has fallen nine straight sessions, the longest since October 2008, and the Philadelphia Semiconductor Index has fallen eight straight. The length of a losing streak alone does not signal a bottom. However, there was a report that the semiconductor index also posted its largest monthly decline since 2008 (about 18.9%) this July (as cited by the Kobeissi Letter, July 2026). Two big corrections in one year means volatility itself has risen in this stretch.
Past semiconductor corrections generally deepened when the industry cycle turned down. This time, industry indicators (TSMC's earnings, GPU rental prices) are good while only prices fall. In such a case there are two branches.
| Branch | Condition | Meaning |
|---|---|---|
| Cost-of-capital shock fades | The 10-year falls below 5% and CDS stabilizes | Earnings drive the share price again |
| Cost-of-capital shock spreads to the industry | Neocloud funding fails, orders shrink | Earnings numbers turn down with a lag |
What investors should watch
- If you hold semiconductor ETFs, check CoreWeave CDS and data center bond prices (QTS 88 cents, Hyperion 92 cents) before earnings-season guidance. Credit moved first.
- Above a 5.2% 10-year yield, leave room for further declines, and until it is confirmed back below 5%, it is safer not to add exposure all at once.
- If you buy in tranches, split them across the earnings season (during October) and the FOMC (October 28) as checkpoints.
You can see detailed charts and signals for other stocks on the /signals dashboard.