A LONG-ONLY, weekly-rebalanced cross-sectional momentum rotation that is deliberately DISTINCT from the deployed 8-major relative-strength winner in two structural ways L24 requires (not a re-weighting of the same majors): (1) a BROADER, deeper universe of 15 liquid BINANCE USD-M perps with ≥3-year history — BTCUSDT, ETHUSDT, SOLUSDT, BNBUSDT, AVAXUSDT, LINKUSDT, ADAUSDT, XRPUSDT, LTCUSDT, DOTUSDT, ATOMUSDT, ETCUSDT, UNIUSDT, FILUSDT, NEARUSDT — where the cross-sectional momentum premium is larger and less arbitraged than among the 8 mega-caps; and (2) RISK-PARITY (inverse-volatility) position weighting rather than equal-weight, which materially changes the return stream and inherently down-weights the crash-prone high-vol names (the defensiveness that plain equal-weight lacks). Mechanism: each week, rank the 15 names by trailing 90-day return, select the top-6, and size each position inversely to its trailing realized volatility (so the basket targets balanced risk contribution), long-only, held one week. It is in the ONE long-only family with proven survival here (the deployed cross-sectional momentum basket, Sharpe 2.63, which survived 2022 by rotating away from the worst losers), and it is NOT any of the confirmed-dead families: NOT single-name MR/reversal (definitively dead — DOGE +0.12%, SOL-OI −0.068%, taker-flow −0.025%), NOT funding carry (saturated/duplicate), NOT options (L23), NOT trend-following, NOT a market-neutral L/S basket (L12 fee wall — this is long-only). Weekly K-of-N rotation gives a sandbox-certifiable trade count and low turnover (fee-viable). 3 core parameters (momentum lookback, number of held names, vol-scaling lookback).