"As we get into September 2026 and look back at the year so far, it's been quite a year... interest rates have been constantly part of the news as well, and it looks like they're taking center stage once more." - Aswath Damodaran [00:00:00]
"If you think about Treasury rates in the longer term going back to the 1960s, we're now closer to the norm, and maybe the abnormal time period is not 2026, but the period from 2008 to 2021." - Aswath Damodaran [00:06:03]
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"It is a brain-dead investment strategy. I will shed no tears for the people who've lost money as the strategy has basically been driven out as rates converge." - Aswath Damodaran [00:15:18]
"When people say as interest rates go up equity value should go down, I pause because it really depends on the companies in your equity market and how they're dealing with interest rates and the underlying drivers for what made interest rates go up." - Aswath Damodaran [00:24:22]
"In my view, the key driver of the Treasury rate will remain inflation... Unless there's a break in inflation, you're not going to see a break in rates." - Aswath Damodaran [00:34:07]
Speakers & Credentials
Aswath Damodaran: Professor of Finance at the Stern School of Business at New York University (NYU). Renowned expert in corporate finance, equity valuation, and asset pricing, widely recognized as the "Dean of Valuation."
1. Executive Summary
Macro Environment in 2026: Long-term US Treasury yields (10-year and 30-year) are approaching levels not observed in two decades, exacerbated by US national debt surpassing $40 trillion [00:00:29], leadership transitions at the Federal Reserve under Chair Kevin Warsh [00:00:49], and active rate signaling from Treasury Secretary Scott Bessent [00:00:56].
Historical Normalization: Current interest rates between 4.5% and 5% appear elevated relative to 2008–2021, but historical context from 1962 onward indicates current levels represent a return to long-term structural norms rather than an anomaly [00:06:03].
Global Yield Convergence: Rates across major developed currencies (USD, GBP, EUR, JPY, AUD, CAD) have universally drifted higher since 2021, effectively dismantling low-volatility FX carry trade strategies [00:13:03].
Corporate Spread Bifurcation: High-grade corporate default spreads have remained tight or narrowed, whereas high-yield/junk bond spreads (CCC and lower) have widened significantly to account for elevated default risk [00:17:33].
Nuanced Equity Transmission Mechanics: Higher interest rates do not mechanically cause equity market declines; while discount rates increase, corporate cash flows can expand if inflation pass-through, pricing power, and earnings revisions offset valuation multiple compression [00:21:04].
Earnings Buffer: The S&P 500 and NASDAQ have posted ~12% and ~13% gains through August 2026, supported by an 11% upward revision in 2026 consensus earnings expectations (from $314 to $349) [00:25:37].
Sector Dispersion: Performance is highly uneven; Energy (+40% market cap) and top-heavy Tech (+25.2% market cap, but median return of 7.75%) drive gains, while Consumer Discretionary, Consumer Staples, and Communication Services lag [00:30:02].
Fundamental Primacy: Long-term rates will continue to be anchored by inflation expectations (currently locked between 2.5% and 3.0%) and real economic growth, rather than discretionary central bank rate cuts [00:34:07].
Macro Catalysts & Yield Curve Normalization in 2026
Rates have taken center stage in 2026 due to three convergent macro factors: long-term yields approaching 20-year highs, total US national debt reaching $40 trillion [00:00:29], leadership transitions at the Federal Reserve under Kevin Warsh [00:00:49], and explicit rate guidance from Treasury Secretary Scott Bessent [00:00:56].
Throughout 2026, US Treasury yields across all maturities (3-month, 2-year, 5-year, 10-year, 20-year, and 30-year) have experienced an upward drift [00:03:02].
The yield curve transitioned from a slightly kinked/inverted structure at year-end 2025 (where the 2-year rate sat below the 3-month rate) into a classical upward-sloping yield curve by August 31, 2026, marked by a noticeably steeper spread between 10-year and 20-year maturities [00:03:40].
Evaluating the 10-year Treasury rate from 1962 to 2026 confirms that while current levels (~4.75%) feel high relative to the post-2008 era, they align closely with historical averages [00:06:03]. The zero-interest-rate policy (ZIRP) era between 2008 and 2021—where 10-year yields fell below 1%—represents the true historical anomaly [00:06:26].
Fundamental Drivers of Risk-Free Rates & Inflation Expectations
Fundamentally, an intrinsic risk-free rate decomposes into two core components: expected inflation and the expected real interest rate (for which real GDP growth serves as a functional proxy) [00:07:02].
Market-based expected inflation—derived by taking the spread between the 10-year Treasury yield and the 10-year Treasury Inflation-Protected Securities (TIPS) yield—shows that inflation expectations have nudged up slightly in 2026 due to geopolitical conflicts in the Middle East (e.g., war involving Iran) and oil price volatility, but have not spiked chaotically as seen in 2022 [00:09:05].
Comparing the actual market 10-year T-bond yield against a constructed "intrinsic rate" (single-year inflation plus real GDP growth) illustrates that market yields smoothed out the extreme inflation spikes of 2022 [00:10:43]. By September 2026, the 4.75% T-bond rate has converged closely with this intrinsic fundamental benchmark [00:11:59].
Global Bond Convergence & Corporate Debt Repricing
Bond yield expansion is a global phenomenon across major developed market currencies (USD, GBP, EUR, JPY, AUD, CAD) [00:12:28]. The German 10-year Bund, which sat at -0.16% in 2021, has shifted firmly positive [00:13:14], while Japanese yields have seen significant percentage jumps relative to their 30-year regime of sub-1% rates [00:13:36].
Yield convergence between low-yielding currencies (like the Yen) and higher-yielding currencies (like the USD) has compressed interest rate differentials, effectively eliminating the risk-adjusted profitability of traditional currency carry trades [00:14:55].
Conversely, select emerging market yields (China, India, South Africa) have decoupled, showing flat or declining rates over a 5-year horizon, though China yields experienced a slight drop in 2026 while Indian yields remained range-bound [00:14:15].
Corporate borrowing costs have increased across the board as the underlying base risk-free rate climbed from 4.18% to 4.75% [00:18:17]. Default spreads for investment-grade bonds narrowed or stayed flat in 2026, but high-yield/junk bond spreads widened dramatically [00:17:33].
Fixed-income assets suffered capital losses in 2026: 10-year US Treasuries lost ~4.5% in price [00:19:28], while high-yield corporate bonds saw a ~11% price drop that eroded high initial coupon yields down to a net total return of just 2.36% [00:20:05].
Equity Valuation Dynamics, Earnings Buffers, and Sector Disparity
Equity valuation dynamics differ fundamentally from bond pricing: while bond cash flows are contractually fixed (causing prices to drop deterministically when discount rates rise), equity cash flows are dynamic and can expand alongside inflation if companies possess high pricing power [00:20:41].
A net expansion or contraction in equity value under rising rates depends on three structural firm attributes: pricing power on revenues, input-cost exposure on operating margins, and reinvestment requirements [00:21:46]. High pricing power combined with low capital intensity allows certain firms to increase equity value during inflationary rate regimes [00:24:40].
Despite 84 days of yield increases in 2026—including 42 days where yields jumped by >3 basis points, driving average daily S&P 500 drops of -0.5% [00:26:24]—the broader equity market achieved strong overall gains (S&P 500 +12%, NASDAQ +13% through August) [00:25:37].
The principal buffer protecting equity valuations has been strong upward earnings revisions: consensus 2026 S&P 500 earnings estimates were revised up 11% (from $314 on Jan 1 to $349 on Sep 1), while 2027 estimates expanded by ~9% [00:28:26].
Sector performance is sharply bifurcated: Energy led all sectors with a +40% market cap gain (driven by crude oil prices) [00:30:10], while Technology grew +25.2% in aggregate market cap but recorded a median stock return of only 7.75%, highlighting heavy top-tier market concentration [00:30:47].
On a global scale, US equities (+13%) significantly outperformed key emerging markets; in US dollar terms, Indian equities declined 4.6% (median stock down ~10%) and Chinese equities fell (median stock down ~9%) [00:32:41].
The Reference Vault
4. Data & Figures
Metric / Parameter
Value / Specifics
Context / Description
Timestamp
US Debt Benchmark
$40 Trillion
Total US national debt surpassed $40 trillion in 2026, driving long-term fiscal stability concerns
Decomposed Intrinsic Risk-Free Rate Framework: An analytical model stating that any long-term nominal risk-free rate ($R_f$) intrinsically equals expected inflation ($\mathbb{E}[I]$) plus the expected real interest rate ($\mathbb{E}[g_{real}]$), proxied by long-term real GDP growth [00:07:02]. In market application, investors must separate central bank interest rate manipulation from fundamental macro realities; rate policy cannot suppress yields below the intrinsic sum of inflation and growth without creating significant structural distortion.
TIPS-Derived Market Expected Inflation Model: A market-implied pricing framework that calculates expected inflation by taking the yield differential between nominal 10-year Treasury bonds and 10-year TIPS [00:08:50]. This provides an objective metric for real-time market inflation expectations, bypassing backward-looking backwardation in government statistical releases (like CPI) and filtering out transient headline noise.
Corporate Pricing Power & Equity Value Transmission Framework: A valuation methodology illustrating that interest rate increases do not uniformly compress stock prices [00:20:41]. Because equity values are defined by present values of variable future cash flows, firms with strong pricing power and low capital expenditure requirements can pass inflation through to revenues, expanding nominal operating earnings fast enough to offset higher discount rates.
Global Yield Convergence & Carry Trade Arbitrage Decay: An economic framework demonstrating how the structural alignment of risk-free yields across major central banks eliminates foreign exchange arbitrage [00:12:28]. When historic low-rate anchor currencies (e.g., JPY, EUR) see bond yields rise toward higher global benchmarks, the interest rate differential collapses, unwinding leveraged cross-border capital flows and ending low-volatility carry trade strategies.
6. Anecdotes
The Historical Framing of the 2008–2021 ZIRP Era: Damodaran contextualizes the concern over ~5% interest rates in 2026 by comparing them to a 60-year chart of US Treasury yields back to 1962 [00:04:42]. He highlights that market participants who view 5% yields as unprecedented are suffering from recent bias; the near-zero rates between 2008 and 2021 were the true historical anomaly, while current levels represent a return to long-term structural equilibrium.
The Demise of the "Lazy" Yen Carry Trade: Damodaran critiques the traditional currency carry trade, where institutional traders systematically borrowed capital in low-yielding currencies like the Japanese Yen and bought higher-yielding US Treasuries [00:14:55]. He labels it a "brain-dead" investment strategy reliant on persistent structural yield gaps, noting that the global rate convergence of 2026 has permanently dismantled this arbitrage setup.
Daily Volatility vs. Annual Equity Trend Disconnect: To highlight how macro market commentary often misses the broader picture, Damodaran reviews daily trading data from 2026 [00:26:03]. On all 42 days where 10-year Treasury yields jumped by >3 bps, equities fell significantly (-0.5% average drop). However, despite these sharp down days, the S&P 500 still gained 12% overall because fundamental corporate earnings revisions quietly outpaced daily rate volatility.
Scott Bessent: US Secretary of the Treasury [00:00:56]
Geopolitical Institutions & Central Banks
Federal Reserve (Fed) / FOMC: US Central Bank and policy committee [00:03:15]
US Department of the Treasury: Executive agency managing national finances and debt issuance [00:00:56]
Moody's: Credit rating agency that downgraded US debt below AAA status [00:16:48]
Financial Assets, Instruments & Indexes
10-Year US Treasury Inflation-Protected Securities (TIPS): Inflation-indexed sovereign bonds used to extract market inflation expectations [00:08:57]
S&P 500 Index: Benchmark US equity market index [00:25:43]
NASDAQ Index: Tech-heavy US equity market index [00:25:43]
German 10-Year Bund: Benchmark Eurozone risk-free sovereign debt [00:12:42]
Historical Events & Macro Crises
2022 Global Inflation Shock: Macroeconomic inflection point where inflation surged and broke the low-rate regime [00:04:27]
Middle East Conflict (Iran War): 2026 geopolitical conflict driving crude oil volatility and inflation expectations [00:00:08]
Sep 11, 2026
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High Yield Bond Price Return
-11.0%
Capital loss on CCC and lower junk bonds during 2026 YTD