Brazil’s High Selic Rate Drives Institutional Interest in Fixed-Rate ETFs for Capital Gains

Amid one of the world's highest real interest rates, major Brazilian financial institutions are guiding investors toward fixed-rate exchange-traded funds, a strategy designed to capture capital gains as the country's benchmark Selic rate begins to fall. The Central Bank of Brazil recently delivered its fifth consecutive quarter-point rate cut, bringing the Selic to 13.75%, but the high level still leaves a path for further reductions, creating a unique opportunity in the fixed-income market that foreign investors are now being exposed to.

The mechanism behind this strategy is known locally as marcação a mercado, or mark-to-market. When an investor buys a fixed-rate Brazilian bond (prefixado), they lock in a certain yield. If the market then begins to expect future Brazil interest rates to be lower than that locked-in rate—as is currently the case with the Selic rate—the existing bond becomes more valuable to prospective buyers. Its price rises immediately to align its fixed coupon with the new, lower prevailing market rate, generating a capital gain for the current holder. This effect is most pronounced in fixed-rate instruments with longer durations.

This dynamic is gaining attention because analysts surveyed in the Central Bank's Focus report now project the Selic rate will end 2026 at 13.50%, a small but significant reduction from the prior forecast, signaling that the current rate-cutting cycle will continue. This expectation of a lower cost of capital in Brazil’s economy drives the immediate price appreciation of fixed-rate assets. The strategy is to buy instruments that are highly sensitive to this mark-to-market movement before the expected cuts are fully priced in.

To execute this, institutions are pointing to publicly traded fixed-rate ETFs that hold portfolios of these government bonds. Specifically mentioned are the IDKA11, which tracks an index of pre-fixed Treasury securities with a medium duration of approximately three years, and the 5PRE11, which focuses on longer-duration fixed-rate bonds, typically around five years. These instruments give investors diversified exposure to the mark-to-market play without requiring direct investment in individual Treasury bonds.

What happens next rests on the Central Bank of Brazil’s Monetary Policy Committee, known as Copom, which controls the Selic rate. The next scheduled meeting, where the committee will decide on a further rate cut, is the concrete event that determines whether the market’s expectation—and thus the current fixed-rate bond prices—will be reaffirmed or adjusted.

WHAT IT TOUCHES The strategy directly impacts the Brazilian fixed-income market, specifically the valuation of fixed-rate Brazilian bonds (LTNs and NTN-Fs), as their prices respond to expected future cuts in the Selic rate. The capital gain potential on these fixed-rate ETFs (IDKA11 and 5PRE11) is driven entirely by the direction and speed of the Copom’s future decisions.