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Sam Bourgi is an analyst, writer and financial market commentator featured in and cited by U.S. Congress, Department of Justice, Chicago Board Options Exchange, Barron's and Forbes. He covers stocks, bonds, mutual funds, ETFs, forex, Bitcoin, cryptocurrency, real estate and macroeconomics. He has written over 25,000 articles and over 40 whitepapers and e-books.
Sigmacast expected range · 7–28-day calibrated zone
Forecast batch: 9/7/26
GAU/IDR's band carries a graded record, but its options premium is not being graded right now. Sigmacast's calibrated band is sized from realized volatility and graded against every terminal close, with its containment rate audited at each horizon over the trailing 30 days. Horizon grades return when the premium ladder is gradeable again — current status is below.
Nested 60 / 80 / 95 calibrated expected-range · centered on current price (gold tick)
Macro correlations · context (not confirmation)
8 correlated indicators
Observed historical correlations, not forward signals.
Positively correlated: Composite Economic Index MoM (r=+0.96), CPI Shelter (r=+0.92), Budget Balance (r=+0.88), CPI Rent of Primary Residence (r=+0.88)
Inversely correlated: Bundesanleihe Auction (r=-0.98), GDP Growth Rate YoY (r=-0.94), Construction Output YoY (r=-0.90), Gross Domestic Product YoY (r=-0.89)
As of September 7, 2026, GAU/IDR is trading at 0.00. Our multi-model Sigmanomics forecast for this commodity generates expected price ranges (magnitude, not direction) across 7-day, 14-day, and 28-day horizons, each with a recent-path character readout. Based on ensemble models including SIGMACAST, Σ-Adaptive, and Σ-Trend with model-agreement confidence bands. Updated daily.
Containment = how often the band held (backtest) — magnitude only, not a directional record.
Forecasts generated by Sigmanomics engine. Not financial advice.
Gold Gram (GAU/IDR) is a commodity instrument tracked by the Sigmanomics analytics platform. The GAU/IDR commodity closed at 2,496,132.67 on September 7, 2026, reflecting a decline of 0.76% from the previous close of 2,515,209.25.
Over the past 30 days, the commodity has experienced a sideways movement with a rally of 0.15%, ranging between 2,445,507.17 and 2,676,880.76. The price currently trades below its 20-day moving average of 2,563,105.70. The 14-day RSI stands at 45.1, in neutral territory, indicating balanced momentum.
Over the same 30-day window, daily-return volatility was 1.12%, reflecting typical price variability for this commodity. Across the past 52 weeks, the commodity has traded between 2,241,424.34 and 3,018,187.27, with the current price near the midrange of that range.
Daily-return volatility of 1.12% is subdued for this commodity, leaving recent ranges compressed — watch for a decisive break of the band as the more telling development. GAU/IDR is currently trading 2.61% below its 20-day moving average and sitting in the middle of its 52-week range. Its 14-day RSI reads 45.1, currently in neutral territory.
Auto-generated from Sigmanomics market data. Last update Sep 2026.
Sigmacast forecasts span six horizons — 30-minute, 1-hour, 2-hour, 4-hour, 12-hour, and daily — refreshed continuously as new bars arrive.