- If Treasury yields continue climbing, the stocks most vulnerable are likely to be companies whose valuations, financing costs, or customer demand are especially sensitive to higher long-term interest rates.
The US Treasury market entered October under significant pressure, with the 10-year Treasury yield reaching 5.34% on Oct. 1, its highest level since 2002. The yield subsequently eased, but remained near multi-decade highs as investors continued to assess inflation, government borrowing and the Federal Reserve's interest-rate outlook.
That matters for stocks because Treasury yields influence the discount rate investors use to value future cash flows, while also affecting corporate borrowing costs, mortgage rates and the relative attractiveness of dividend-paying equities.
The recent market action provides an important distinction. Higher yields do not automatically make a company a bad investment. The bigger risk is concentrated among businesses with heavy financing requirements, long-duration valuations, large debt loads or direct exposure to interest-sensitive demand.
Based on those factors, five stocks stand out as particularly exposed if long-term Treasury yields continue moving higher.
Realty Income, Crown Castle and Utilities Face Higher Capital Costs
Realty Income Corp. (NYSE: O) is one of the clearest examples of a stock that can face pressure when Treasury yields rise. The real estate investment trust operates with substantial debt and competes with bonds for income-oriented investors.
Realty Income reported about $31.2 billion of total debt as of June 30, including approximately $28.6 billion of fixed-rate debt and $2.6 billion of variable-rate debt. Its weighted average interest rate was about 3.8%. While the large fixed-rate component limits the immediate impact of higher rates, refinancing and the cost of new capital become more expensive as market yields rise.
The problem is also relative valuation. When 10-year Treasury securities offer yields above 5%, investors can demand a larger risk premium before accepting the additional equity risk associated with a REIT.
Crown Castle Inc. (NYSE: CCI) faces a similar dynamic. The communications-infrastructure REIT owns and leases thousands of wireless towers and other infrastructure, creating a capital-intensive business model. Its second-quarter supplemental filing showed a substantial debt base, including fixed-rate securities with maturities extending into 2048.
Crown Castle has been working to reduce leverage following the sale of its fiber business, including plans to repay debt. That provides an important counterweight to the interest-rate risk, but a prolonged period of high yields could still increase the cost of refinancing and reduce the relative appeal of its dividend.
Utility stocks can face the same valuation pressure. Duke Energy Corp. (NYSE: DUK) and Dominion Energy Inc. (NYSE: D) both require substantial capital to maintain and expand regulated infrastructure.
Duke's latest filing says the company manages interest-rate exposure arising from both fixed- and variable-rate debt and uses interest-rate swaps and Treasury locks to manage portions of that risk. Dominion reported that a hypothetical 10% increase in market interest rates would reduce earnings from its variable-rate debt exposure.
These companies are not necessarily in financial distress. The risk is that higher long-term yields raise financing costs while making Treasury securities more competitive with utility dividends.
Lennar Has a Different Problem: Mortgage Rates Can Hit Demand
Lennar Corp. (NYSE: LEN) may have the most direct exposure to a sustained increase in Treasury yields because mortgage rates generally move with longer-term bond yields. Freddie Mac's average 30-year fixed mortgage rate reached 7.28% for the week ended Oct. 1, according to data reported by the Financial Times. That followed a 7.03% reading for the week ended Sept. 24.
Lennar's latest earnings show why that matters. The homebuilder reported third-quarter net income of $284 million, down from $591 million a year earlier. New orders fell 9% to 20,879 homes, while deliveries declined 3%.
Lennar also lowered its full-year 2026 delivery target to approximately 80,000 to 81,000 homes from its previous target of 82,000 to 83,000. Management specifically cited continued pressure from interest rates and deteriorating market conditions.
The company has strengths that reduce some of the risk. Lennar ended the quarter with $1.2 billion in homebuilding cash, repaid $400 million of senior notes and reported homebuilding debt equal to 16.6% of total capital.
That means the concern is less about an immediate balance-sheet problem and more about demand. If Treasury yields remain elevated and mortgage rates stay above 7%, affordability could continue limiting purchases and forcing builders to use incentives or price adjustments.
For investors, these stocks should therefore be viewed through the lens of rate sensitivity rather than a simple sell signal. A further rise in Treasury yields would increase the relative pressure on highly leveraged REITs, capital-intensive utilities and homebuilders, while a reversal in long-term rates could ease those headwinds.
The key variables to watch are the 10-year Treasury yield, mortgage rates, corporate refinancing costs and the Federal Reserve's policy outlook. Those indicators will determine whether the current bond-market pressure remains a temporary valuation shock or develops into a broader earnings problem for rate-sensitive companies.