{"index": {"name": "Building Materials", "level": "industry", "country_code": "CN", "sector": "Basic Materials", "industry": "Building Materials", "constituent_count": 39, "latest": {"week_ending": "2026-07-17", "index_value": 1023.50877249, "weekly_return": -5.28866494, "constituents": 39, "advancing": 8, "declining": 28, "unchanged": 3, "trend_line": 1192.735963, "activity_lines": {"activity_5": 1077.229665, "activity_10": 1107.597489, "activity_20": 1145.452934, "activity_30": 1170.012502}, "fair_value": 1012.898507, "trend_signal": 0}, "summary": "For the week ending 17 July 2026, Building Materials declined 5.29% with 8 advancing, 28 declining, and 3 unchanged constituents.", "links": {"chart": "https://sharemaestro.com/structure/cn/basic-materials/building-materials/", "api": "https://sharemaestro.com/api/structure/cn/basic-materials/building-materials/", "share_image": "https://sharemaestro.com/structure/cn/basic-materials/building-materials/share-image.svg"}}, "available": 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Not financial, investment, trading, tax, or legal advice."}