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"country_code": "ZA", "sector": "Basic Materials", "industry": "Gold", "constituent_count": 6, "latest": {"week_ending": "2026-05-29", "index_value": 6666.03441878, "weekly_return": 3.36758051, "constituents": 6, "advancing": 5, "declining": 1, "unchanged": 0, "trend_line": 6813.969547, "activity_lines": {"activity_5": 6703.590366, "activity_10": 6876.806031, "activity_20": 7007.058242, "activity_30": 6968.859679}, "fair_value": 3790.928233, "trend_signal": 0}, "summary": "For the week ending 29 May 2026, Gold advanced 3.37% with 5 advancing, 1 declining, and 0 unchanged constituents.", "links": {"chart": "https://sharemaestro.com/structure/za/basic-materials/gold/", "api": "https://sharemaestro.com/api/structure/za/basic-materials/gold/", "share_image": "https://sharemaestro.com/structure/za/basic-materials/gold/share-image.svg"}}, {"name": "Steel", "level": "industry", "country_code": "ZA", "sector": "Basic Materials", "industry": "Steel", "constituent_count": 3, "latest": {"week_ending": "2026-05-29", "index_value": 1723.53045871, "weekly_return": 0.76249682, "constituents": 3, "advancing": 1, "declining": 2, "unchanged": 0, "trend_line": 1674.08979, "activity_lines": {"activity_5": 1719.933607, "activity_10": 1711.754935, "activity_20": 1693.734279, "activity_30": 1689.703192}, "fair_value": 1581.998208, "trend_signal": 1}, "summary": "For the week ending 29 May 2026, Steel advanced 0.76% with 1 advancing, 2 declining, and 0 unchanged constituents.", "links": {"chart": "https://sharemaestro.com/structure/za/basic-materials/steel/", "api": "https://sharemaestro.com/api/structure/za/basic-materials/steel/", "share_image": "https://sharemaestro.com/structure/za/basic-materials/steel/share-image.svg"}}, {"name": "Specialty Chemicals", "level": "industry", "country_code": "ZA", "sector": "Basic Materials", "industry": "Specialty Chemicals", "constituent_count": 4, "latest": {"week_ending": "2026-05-29", "index_value": 1049.97895302, "weekly_return": 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"index_value": 1683.98181913, "weekly_return": -0.20001, "constituents": 8, "advancing": 5, "declining": 3, "unchanged": 0, "trend_line": 1836.520262, "activity_lines": {"activity_5": 1728.27346, "activity_10": 1763.593214, "activity_20": 1832.893391, "activity_30": 1864.346711}, "fair_value": 1147.520266, "trend_signal": 0}, "summary": "For the week ending 29 May 2026, Other Precious Metals & Mining declined 0.20% with 5 advancing, 3 declining, and 0 unchanged constituents.", "links": {"chart": "https://sharemaestro.com/structure/za/basic-materials/other-precious-metals-mining/", "api": "https://sharemaestro.com/api/structure/za/basic-materials/other-precious-metals-mining/", "share_image": "https://sharemaestro.com/structure/za/basic-materials/other-precious-metals-mining/share-image.svg"}}, {"name": "Building Materials", "level": "industry", "country_code": "ZA", "sector": "Basic Materials", "industry": "Building Materials", "constituent_count": 4, "latest": {"week_ending": "2026-05-29", "index_value": 1157.2986788, "weekly_return": -0.7096399, "constituents": 4, "advancing": 2, "declining": 2, "unchanged": 0, "trend_line": 1131.186461, "activity_lines": {"activity_5": 1133.288325, "activity_10": 1125.874635, "activity_20": 1129.882265, "activity_30": 1134.671073}, "fair_value": 1000.323144, "trend_signal": 0}, "summary": "For the week ending 29 May 2026, Building Materials declined 0.71% with 2 advancing, 2 declining, and 0 unchanged constituents.", "links": {"chart": "https://sharemaestro.com/structure/za/basic-materials/building-materials/", "api": "https://sharemaestro.com/api/structure/za/basic-materials/building-materials/", "share_image": "https://sharemaestro.com/structure/za/basic-materials/building-materials/share-image.svg"}}], "constituents": [{"ticker": "ISO", "name": "ASP ISOTOPES INC.", "exchange": "JNB", "week_ending": "2026-05-29", "ohlc": {"open": 9520.0, "high": 12600.0, "low": 9001.0, "close": 12305.0}, "weekly_return": 30.32196569}, 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Not financial, investment, trading, tax, or legal advice."}