- The reason for the halt: Tesouro Direto suspended trading due to high volatility in future interest rates, which opened with surges of up to 182 basis points.
- The impact on your bond: Every 1 percentage point increase in interest rates drops the price of the Tesouro IPCA+ 2050 by about 20% through mark-to-market accounting.
- Our recommendation: Avoid any early redemptions during periods of stress; investors who hold their bonds to maturity receive the agreed-upon rate.
Tesouro Direto temporarily suspended trading on Monday (26) due to an accelerated jump in interest rates in the futures market. Investors attempting to access the platform in the morning encountered shutdown messages or significant opening delays, with trading only partially resuming around 11:28 AM.
Why Is Tesouro Direto Closed Today?
Because fixed-income bond prices change too quickly when the future interest-rate curve undergoes a severe repricing. According to InfoMoney, the opening delay and subsequent trading halt occurred amid a spike in interest rates following the results of the presidential runoff election, in which Lula defeated Flávio Bolsonaro by a margin of roughly 4.4 million votes.
During the week's first trading session, interest-rate futures opened sharply higher across all points on the curve, registering jumps of up to 182 basis points (1.82 percentage points) on longer maturities. In response to this abrupt market swing, the National Treasury issued a formal statement explaining the situation to investors.
“Tesouro Direto reports that it is closed for trading due to high volatility in rates. Operations are expected to normalize throughout the day.” Official statement from the National Treasury (via InfoMoney, 10/26/2026)
This temporary suspension is not a freeze on your assets. It is an operational protection mechanism routinely triggered when the secondary market for government bonds registers atypical movements. When volatility reaches extreme levels, the Treasury halts trading to prevent investors from buying or selling bonds at misadjusted prices that are out of sync with financial institutions' trading desks.
In addition to interrupting buying and selling on Tesouro Direto, the National Treasury Secretariat took drastic measures in the primary market: it canceled formal auctions of fixed-rate and inflation-linked bonds (IPCA+) scheduled for the week, exclusively maintaining the offering of LFTs (Tesouro Selic). To contain the surge in long-term rates, the Treasury also announced a buyback auction for up to 5 million NTN-F notes across each of the 2031, 2033, and 2037 maturities—repeating the exact containment strategy adopted in March during severe market pressure driven by the conflict in Iran.
How Much Do Your Bond Prices Fall Due to Mark-to-Market Accounting?
The temporary depreciation in bond values results from the mathematical mechanics of mark-to-market accounting: when the interest rate demanded by investors rises, the face value of the bond falls so that its final yield adjusts to the new reality. The longer a bond's maturity, the higher its sensitivity to rate fluctuations.
According to data published by InfoMoney, the impact of a 1 percentage point (100 basis point) increase in interest rates varies sharply depending on the type and maturity of the fixed-income bond held in a portfolio:
This relationship explains why long-term paper experiences an immediate cushion drop on brokerage statements. If the market begins demanding a higher interest rate to finance the government for 24 years (as is the case with the IPCA+ 2050), the present value of that paper must drop by about 20% to offer new buyers the higher yield at maturity.
In scenarios where interest-rate futures jump 182 basis points in a matter of hours, long-term IPCA-linked paper can show portfolio declines exceeding 30% from recent peaks. However, it is essential to emphasize that this loss is only realized if the investor decides to sell the bond early during the period of stress.
How High Can Rates Go, According to Analysts and Research Houses?
Market analysts point to a period of intense adjustment and risk repricing across Brazilian assets. As reported by InfoMoney, JPMorgan analysts evaluated that the repricing on the first post-election day could be considerable, projecting that government bond rates could reach 15.5% per year in a more pessimistic scenario.
Considerable first-day repricing, driving up risk premiums on long-term paper.
Sees clear room for long-term rates to trade back within this yield range.
In the view of economist Bruno Corano, cited by InfoMoney, there is room for long-term rates to return to trading between 14% and 15% per year. This movement unfolds as the benchmark interest rate (Selic) sits at 13.75% per year under the guidance of the Central Bank, which will hold its next monetary policy meeting (Copom) on November 4.
Pay Attention to Market Timing: With the current Selic rate at 13.75% and the Copom meeting scheduled for November 4, the market is pricing in an expressive risk premium on fixed-rate and IPCA+ bonds, reflecting short-term fiscal and political uncertainties.
What You Should (and Should NOT) Do with Your Bonds Now
An investor's instinctive reaction upon opening their brokerage app and seeing the balance of their Tesouro IPCA+ or fixed-rate bond in the red is to try to redeem the cash to "stem the losses." However, this is precisely the decision that turns a temporary accounting fluctuation into an irreversible financial loss.
- Hold bonds to maturity: If you do not need the money immediately, today's fluctuation is irrelevant. The National Treasury guarantees the exact payment of the rate agreed upon at the time of purchase on the bond's maturity date.
- Use Tesouro Selic for cash holdings: Investors holding Tesouro Selic do not suffer from mark-to-market volatility and continue earning daily returns based on the Selic rate (13.75% p.a.).
- Panic-redeem long-term paper: Selling a Tesouro IPCA+ 2050 or Fixed-Rate 2032 during a trading halt or high volatility permanently locks in mark-to-market losses.
- Try to time the peak in rates: Making new allocations into fixed-rate bonds while rates are rising sharply requires caution; the ideal approach is to wait for the yield curve to stabilize.
What Changes for Your Bond Profile
The practical impact of the trading halt and rising interest rates depends directly on the class of government bond you hold in your investment portfolio. Here is a direct analysis for each category:
If you hold Tesouro Selic: Zero risk of capital loss. Your bond earns daily returns tracking the 13.75% per year rate and does not suffer from abrupt mark-to-market swings. The system freeze merely prevents immediate liquidation today, but yields continue to accumulate normally.
If you hold Fixed-Rate Bonds (2029/2032): Your statement will show a drop in accumulated value. The 2029 Fixed-Rate bond loses about 2% in value for every 1% increase in rates, while the 2032 Fixed-Rate bond declines by 4.4%. If you do not sell, you will receive the full amount promised at purchase upon contract maturity.
If you hold Tesouro IPCA+ (2035/2050): This is the visually hardest-hit category. The IPCA+ 2050 drops about 20% for every 1-point increase in future interest rates. This is a very long-term paper: selling early today hands a severe discount to the market.
What to Monitor in the Coming Days
With trading suspended and the yield curve undergoing accelerated repricing, investors should monitor the consolidation of fiscal data and monetary authorities' decisions before making new moves in their fixed-income portfolios.
Normalization of the Tesouro Direto platform — Monitor the official reopening of rates throughout the day to see at what level bond premiums stabilize.
Execution of NTN-F buyback auctions — Observe the results of the National Treasury's intervention in buying back up to 5 million bonds across the 2031, 2033, and 2037 maturities to contain volatility.
Copom meeting on November 4 — Evaluate the Central Bank's statements regarding maintaining or adjusting the Selic rate of 13.75% per year to recalibrate inflation and interest-rate expectations.
Verdict: Time for Calm and Discipline
The suspension of Tesouro Direto is an operational protection measure against panic in the interest-rate market. If you invested with a focus on maturity, the best path today is to close your brokerage screen and refuse the mark-to-market discount. The yield guarantee on public fixed-income securities remains intact over the contracted term.
