{"index": {"name": "Copper", "level": "industry", "country_code": "HK", "sector": "Basic Materials", "industry": "Copper", "constituent_count": 6, "latest": {"week_ending": "2026-07-10", "index_value": 3099.48969132, "weekly_return": -2.3542714, "constituents": 6, "advancing": 2, "declining": 4, "unchanged": 0, "trend_line": 3944.198887, "activity_lines": {"activity_5": 3200.763506, "activity_10": 3357.069454, "activity_20": 3532.595173, "activity_30": 3724.286289}, "fair_value": 2408.256014, "trend_signal": 0}, "summary": "For the week ending 10 July 2026, Copper declined 2.35% with 2 advancing, 4 declining, and 0 unchanged constituents.", "links": {"chart": "https://sharemaestro.com/structure/hk/basic-materials/copper/", "api": "https://sharemaestro.com/api/structure/hk/basic-materials/copper/", "share_image": "https://sharemaestro.com/structure/hk/basic-materials/copper/share-image.svg"}}, "available": true, "methodology": {"country_code": "HK", "asset_type": "equity", 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