📊 B3 Closing & Market Gamma (GEX) Analytical Mapping — 06/09/2026

📈 1. Market Summary (Closing: 06/09/2026)

The Ibovespa operated in a strong technical rally this Tuesday, driven by a significant improvement in mood in international markets and a strong flow of portfolio recomposition by domestic and foreign investors. The main index of the Brazilian stock exchange jumped 1.48%, closing at 172,240.45 points, firmly recovering the psychological support of 170k lost last week.

The financial volume was robust, totaling R$ 25.9 billion, signaling strong buying conviction in the breakout of immediate resistances.

📊 Closing Panel

• Ibovespa (IBOV): ▲ +1.48% (172,240.45 points)
• Commercial Dollar: ▼ -1.22% (quoted at R$ 5.0596 — strong exchange relief after the recent spike).
• DI January 2031 (Long Contract): ▼ 13.84% (significant decline following the drop in US Treasury yields).
• Brent Crude Oil: ▼ -0.45% (trading at US$ 91.48 per barrel, showing tactical stabilization).

🚀 Key Assets Dynamics

• Vale (VALE3): ▲ +2.64% (R$ 64.05) — Continued as the index's locomotive, surfing the strong rise of iron ore futures contracts in Dalian and Singapore, coupled with the closing of the local exchange rate curve.
• Petrobras (PETR4): ▲ +1.87% (R$ 38.81) — Ignored the slight negative oscillation of oil abroad and rose firmly with the flow of institutional investors seeking dividend asymmetry.
• Banking Sector: Strong block rally. Itaú Unibanco (ITUB4) advanced +2.12% (R$ 34.21) and Banco do Brasil (BBAS3) rose +1.95%, clearing the institutional fears of the previous week.
• CVC Brasil (CVCB3): ▲ +6.84% — Led the gains of the Small Caps index, directly benefiting from the strong decline of the spot dollar and the drop in future interest rates (DIs).

🔍 2. Market Gamma (GEX) Analytical Mapping — June Series

Today's expressive rally caused a dramatic structural change in the derivative landscape of B3. With the Ibovespa breaking the 172k barrier, the market reached and surpassed the Gamma transition line.

📐 Structural GEX Overview (IBOV & Key Assets)

Classic Market Gamma mathematical model:

The market aggregate registered a strong deleveraging of long positions in Puts, taking the Net GEX to +R$ 1.12 billion (Long Gamma Regime Reactivated).

   DYNAMIC SUPPORT ZONE (LONG GAMMA)
 ◄───────────────────────────────────────────────■──────────────────────────────►
 169k                                         171.5k                           174.5k
 [Old Stress Zones]                        [Flip Point Cleared]           [Calls Resistance]

🚨 1. Market Regime: Entry into Long Gamma (Positive GEX)

The Ibovespa crossed upward the Gamma Flip Point (171,500 points). In the Long Gamma regime, the mechanical behavior of Market Makers reverses: to keep their portfolios delta-neutral, they start acting against the immediate intraday trend (selling at the highs and buying at the lows). This institutional flow acts as a volatility shock absorber, tending to stabilize or lock the index in the current range.

🎯 2. Open Interest Concentration (Friction Zones)

• New Magnetic Support (Flip Point): The 171,500 points region now acts as the main technical and volumetric support. Any realization down to this range should attract institutional buying flow from hedge algorithms.
• Gamma Resistance Zones (Exercise Ceiling): The largest block of Open Interest of Calls in the institutional market is concentrated at 174,500 and 175,000 points. As the index approaches this region, Market Makers will be heavily long on stocks in the spot market, generating a "Pinning" effect (locking by attraction) near the expiration.

📊 Skew and GEX Breakdown by Leading Assets

A. VALE3 (Ref Price: R$ 64.05)

• Total GEX: +R$ 940 million (Dominant Long Gamma).
• Positioning Analysis: The stock broke the important quantitative resistance strike of R$ 64.00. This movement triggered a strong Short Squeeze on the written sides of Calls. The implied volatility Skew flattened significantly, reducing the risk premium of Puts. The next relevant magnetic Gamma zone is located at R$ 65.50.

B. PETR4 (Ref Price: R$ 38.81)

• Total GEX: -R$ 110 million (Significant reduction in Short Gamma).
• Positioning Analysis: Today's strong rally cleared the imminent risk of Delta Bleed that threatened the asset in the R$ 36.50 range. The defensive Skew retreated, but the asset still operates under a mild negative GEX regime due to the large concentration of institutional bear spreads set up in the R$ 39.50 - R$ 40.00 range, which should act as a rigid ceiling for the June expiration.

C. ITUB4 (Ref Price: R$ 34.21)

• Total GEX: +R$ 420 million (Migration to Long Gamma).
• Positioning Analysis: The stock surpassed the compression barrier of R$ 34.00. Institutional treasuries that were short on volatility in this range have now changed the Delta inclination of their positions. The expected behavior for the upcoming sessions is strong anchoring (pinning) around R$ 34.00 - R$ 34.50 for the exercise.

🛠️ 3. Structural Recommendations and Portfolio Management

1. Implied Volatility Crush (IV Crush): The market's transition to Long Gamma territory significantly reduced the implied volatility of the June options series. Volatility selling strategies (such as Iron Condors or Jade Lizards) reaped expressive profits today due to the decline in premiums, recommending the tactical dismantling of positions that have already reached 60% to 70% of maximum profit.
2. Defensive Positioning: With the establishment of support at 171,500 points, directional long operations find a comfortable technical cushion of statistical protection based on the hedge of Market Makers.