Treasury yields slid this week as a sell-off in artificial-intelligence stocks pushed investors toward government bonds. From Tuesday's close to Friday's, October 13 to October 16, 2026, the 10-year Treasury yield fell 12 basis points to 5.09% and the 30-year fell 13 basis points to 5.43%. Over the same three sessions the VanEck Semiconductor ETF ($SMH) lost 8.22%, the Nasdaq Composite fell 3.91% and the Cboe Volatility Index jumped from 15.27 to 19.99.

The move is worth studying because of what it overrode. Wednesday brought a hotter-than-forecast consumer price report, and Thursday brought producer prices that ran well ahead of expectations. Inflation news like that tends to push long yields up. This week it did not. Fear in the equity market, concentrated in one of its most crowded trades, mattered more to bond buyers than another warm inflation reading.

How far yields fell, maturity by maturity

Using Treasury's daily par yields, here is the change from the October 13 close to the October 16 close:

• 3-month: 4.26% to 4.26% (unchanged)
• 1-year: 4.48% to 4.46% (-2 basis points)
• 2-year: 4.79% to 4.74% (-5)
• 5-year: 5.00% to 4.89% (-11)
• 10-year: 5.21% to 5.09% (-12)
• 20-year: 5.60% to 5.47% (-13)
• 30-year: 5.56% to 5.43% (-13)

The pattern matters as much as the size. Bills barely moved, the 2-year eased modestly, and the biggest declines came at the long end. That is a "bull flattening": long bonds rallying harder than short paper. Most of it happened on a single day. On Thursday, October 15, the 5-, 10-, 20- and 30-year yields each fell 9 basis points.

Bond funds tell the same story in price terms. The iShares 20+ Year Treasury Bond ETF ($TLT) rose 2.14% over the three sessions to $80.05, the 7-10 year fund ($IEF) gained 0.98%, and the 1-3 year fund ($SHY) added just 0.21%. The further out the maturity, the bigger the gain, which is what a flight to duration looks like.

The AI sell-off that drove the bid

The equity side of the trade was narrow and violent. From October 13 to October 16:

• Advanced Micro Devices ($AMD): $605.53 to $528.75 (-12.68%)
• Oracle ($ORCL): $143.20 to $128.23 (-10.45%)
• Broadcom ($AVGO): $357.31 to $328.75 (-7.99%)
• Micron Technology ($MU): $953.19 to $878.84 (-7.80%)
• Nvidia ($NVDA): $228.52 to $214.13 (-6.30%)
• Microsoft ($MSFT): $543.45 to $529.05 (-2.65%)
• Technology Select Sector SPDR ($XLK): -6.53%

The selling came in two waves. On Wednesday, the day of the inflation report, chip stocks fell hard: $SMH lost 3.98%, a move we covered in Hot September CPI Sends Short Yields and Dollar Higher. Thursday brought a partial bounce in some names, with Oracle up 3.00% and Micron up 1.87%. Friday erased it, and then some. AMD fell 5.95%, Micron 5.63% and Broadcom 4.52% in a single session, and $SMH dropped another 3.41%.

The broad market held up far better than the AI complex. The S&P 500 fell 1.87% over the three sessions to 7,659.44, while the Dow Jones Industrial Average actually rose 0.64% to 52,002.41. Energy stocks ($XLE) gained 1.55%. That divergence is the clearest sign this was a rotation out of one crowded theme, not a wholesale exit from equities. We looked at how stretched the trade had become in AI Infrastructure Sell-Off Tests the Market's High-Multiple Tech Trade.

Safety beat inflation on Thursday

The most telling session was Thursday, October 15. That morning's economic calendar was loaded, and much of it argued for higher yields, not lower:

• Producer prices rose 1.3% in September against a 0.5% consensus, per the Bureau of Labor Statistics. Core PPI rose 0.7% against 0.3% expected.
• The New York Fed's Empire State manufacturing index came in at 25.5, far above the 10.3 consensus.

Other releases pointed the other way:

• Retail sales rose 0.1% in September against 0.3% expected, after a 1.2% gain in August, per the Commerce Department.
• The Philadelphia Fed manufacturing index fell to 20.9 from 37.8, short of the 28.4 consensus, and its new-orders component dropped to 4.3 from 29.2.

Faced with a hot inflation print on one side and softer spending and factory orders on the other, the bond market leaned toward growth worries and safety. The 10-year fell 9 basis points that day. The S&P 500 managed a 0.33% gain and the Dow rose 1.08%, but $SMH still slipped 1.04%. Investors were not panicking out of stocks across the board. They were paying up for duration.

We cannot know from prices alone how much of the bond rally was fear of AI losses and how much was the soft retail and Philly Fed numbers. They pulled in the same direction on the same morning. What is clear is that a 1.3% monthly producer-price gain, more than double the forecast, did not stop long yields from falling.

Volatility, the dollar and gold

The Cboe Volatility Index, Wall Street's "fear gauge," rose 30.91% over the three sessions, from 15.27 to 19.99. Most of that came on Friday, when it jumped 21.45% in one day as the second wave of chip selling hit.

The dollar gave back its CPI-day gain. The ICE U.S. Dollar Index rose to 102.55 on Wednesday, then slipped to 102.00 on Thursday and 101.84 on Friday. Falling U.S. yields reduce the pay-off for holding dollars, so the currency softened as the bond rally built. Gold futures dropped to $4,107.90 on Wednesday, then recovered to $4,181.10 by Friday, essentially back to their October 13 level of $4,177.30.

Inflation-protected Treasuries also rallied. The iShares TIPS Bond ETF ($TIP) rose 0.94% to $105.54, a reminder that investors wanted government-backed duration in every form, not only conventional bonds.

What it means for conservative investors

Three sessions do not make a trend, and none of what follows is a recommendation to buy or sell a security. But the week offers a few lessons worth keeping:

• Long Treasuries still behaved like a hedge. When the most crowded equity theme sold off, the 30-year yield fell 13 basis points and $TLT rose 2.14%. That cushioning effect is the reason balanced portfolios hold bonds at all, and it worked this week even with inflation running hot.
• Yields remain high in absolute terms. Even after the slide, the 10-year ended at 5.09% and the 30-year at 5.43%. For more on what 5% Treasury yields mean, see Conservative News on the US Economy: 5% Treasury Yields.
• Short-term rates did not budge. The 3-month bill was unchanged at 4.26% and the 6-month at 4.34%. Investors who want income without taking duration risk can still find it at the front of the curve; our guide to building a Treasury bill ladder walks through how.
• Concentration is the real risk. The Dow rose while AMD fell 12.68%. A portfolio's exposure to a single theme matters more than its exposure to "the market."

For more of our coverage, visit the Markets section or the Wall Street Conservative homepage.

FAQ

Why did Treasury yields fall during the AI sell-off?

Investors moved money out of technology stocks and into government bonds, which pushed bond prices up and yields down. From October 13 to October 16, 2026, the 10-year yield fell 12 basis points to 5.09% while the VanEck Semiconductor ETF lost 8.22%.

Did yields fall even though inflation data was hot?

Yes. September producer prices rose 1.3% against a 0.5% forecast on October 15, yet the 10-year yield fell 9 basis points that day. Softer retail sales and a weaker Philadelphia Fed survey came out the same morning, alongside the equity sell-off.

Which stocks fell the most?

Among large AI-linked names, Advanced Micro Devices fell 12.68% from October 13 to October 16, Oracle fell 10.45%, Broadcom 7.99%, Micron 7.80% and Nvidia 6.30%. The Dow Jones Industrial Average rose 0.64% over the same period.

Did short-term Treasury yields fall too?

Only slightly. The 2-year yield fell 5 basis points to 4.74% and the 1-year 2 basis points to 4.46%, while the 3-month bill was unchanged at 4.26%. Most of the decline was in maturities of five years and longer.