A LONG-SHORT, SINGLE-INSTRUMENT, SINGLE-VENUE trend strategy on BTCUSDT.BINANCE USD-M that follows the ONLY archetype proven to survive this factory (single-instrument BTC momentum, long-short, trailing-managed) but obeys L38 by adding a GENUINELY NEW information source rather than another price gate or a symbol swap: the TOP-TRADER long/short ACCOUNT ratio (Binance's positioning of the largest/most-informed accounts), a supplementary series not used in any of my pending hypotheses (which use OI, taker-flow, price-structure, and funding was fatal). The idea: a medium-term price trend is only trustworthy when INFORMED money is leaning the same way. Go long a confirmed up-trend ONLY while the top-trader L/S ratio is elevated/rising (smart money net-long and adding); go short a confirmed down-trend ONLY while top-trader L/S is falling (smart money net-short); FLATTEN when price trend and smart-money positioning DIVERGE (the move is retail-driven and unsupported). This is distinct from my ETH price-OI quadrant (total open interest, not WHICH cohort is positioned), from the dead crowding-FADES (this FOLLOWS informed money, it does not fade the retail crowd), and from the dead 'informed-positioning basket' (that was a long-only, low-turnover, no-trades BASKET; this is a single-name, long-short, trend-timed strategy that actually trades). Crucially it is engineered against the two things that just killed my perp ideas: leverage is capped at 1.5x with a hard per-trade stop AND a volatility circuit-breaker that flattens during crash-vol spikes, so the 77%/100% drawdown blow-ups (DOGE/SOL) are impossible; and it is LOW-FREQUENCY on 12h/daily bars holding multi-day trends, so the ~0.10% USD-M round trip is immaterial (no fee_edge fragility). One instrument, one venue, one cheap series, pure incremental computation — none of the options/cross-venue/multi-leg machinery that dies in verification. 3 parameters, to resist overfitting.