A fragility-driven barbell portfolio (v2) combining an antifragile core (gold + Bitcoin) with a robust bond backbone (mid and long Treasuries), plus a managed-futures hedge and a small cash buffer. Rebalances quarterly or when a 10% drift or VIX > 25 occurs, aiming for mild antifragility and diversified risk.

- The portfolio splits into four pillars: antifragile core (gold and Bitcoin), robust bond anchor (mid and long Treasuries), trend-following hedge (managed futures), and a cash-like buffer. - Weights: GLD 25%, IBIT 15%, IEF 25%, TLT 15%, DBMF 15%, BIL 5% (sums to 100%). - Rebalance quarterly to restore these weights when features drift; if any asset’s weight drifts by more than 10% from its target, rebalance. If the VIX volatility index rises above 25, also rebalance to stay aligned with risk controls. - The ladder element comes from mixing maturities within Treasuries (IEF = 7–10 years; TLT = 20+ years) to avoid over-concentration in a single duration and to smooth interest-rate exposure. - The goal is a mild antifragile stance (target fragility around -0.3): expect better resilience during market stress without needing to gamble on high-risk bets. - This is a strategic, not tactical, approach: it defines targets and rules, not daily trading; execution follows the quarterly cadence and the drift/volatility triggers.

Out-of-sample results show milder drawdowns and stronger risk-adjusted returns vs the S&P 500, thanks to an antifragile core (gold/Bitcoin), a robust bond backbone, and a trend hedge that deliver resilience and upside in volatile markets.