An 11% yield looks stable—until rates fall by half a percentage point

An 11% annualized dividend yield stands on a 4% cushion. Capital Southwest (CSWC) pays $0.64 per share annually, covered by net investment income at 104%. That margin is thin—and all of it could vanish if interest rates fall by less than half a percentage point.

95% of CSWC’s portfolio is in floating-rate loans, which means its lending income moves with the Fed. A 75 basis point decline in base rates would reduce net investment income by $0.19 per share. The current regular dividend is $0.7736 per year. A drop of $0.19 erases the excess and pulls coverage below 100%.

The company has held up so far. It reported $0.60 in pre-tax net investment income per share in Q3 FY26, driven by $244 million in new originations. Its portfolio earns 11.3% on average, while its unsecured notes cost 5.95%. The internally managed structure keeps expenses at 1.7% of assets, preserving more spread for shareholders.

But the yield’s stability depends on rates staying high enough to sustain that spread. The weighted average portfolio yield has already declined from 11.8% to 11.3% over three quarters. If the Fed cuts twice more, the math tightens further.

CSWC trades at $23, a 138% premium to its $16.75 book value. That premium reflects confidence in management and the industrial focus of its borrowers—companies in manufacturing and essential services, less exposed to AI disruption. But confidence is fragile. Any dividend cut or rise in non-accruals, now at 1.5% of the portfolio, could trigger a repricing toward net asset value.

The supplemental dividend is covered by $1.02 per share in undistributed taxable income, good for about four years. That buys time. But it does not protect the core income stream from rate-driven compression.

An 11% yield looks stable—until rates fall by 75 basis points.