{"index": {"name": "Publishing", "level": "industry", "country_code": "KR", "sector": "Communication Services", "industry": "Publishing", "constituent_count": 3, "latest": {"week_ending": "2026-05-29", "index_value": 489.57770651, "weekly_return": -11.20970348, "constituents": 3, "advancing": 0, "declining": 3, "unchanged": 0, "trend_line": 650.719596, "activity_lines": {"activity_5": 564.358714, "activity_10": 607.466997, "activity_20": 623.931659, "activity_30": 632.630487}, "fair_value": 769.47665, "trend_signal": 0}, "summary": "For the week ending 29 May 2026, Publishing declined 11.21% with 0 advancing, 3 declining, and 0 unchanged constituents.", "links": {"chart": "https://sharemaestro.com/structure/kr/communication-services/publishing/", "api": "https://sharemaestro.com/api/structure/kr/communication-services/publishing/", "share_image": "https://sharemaestro.com/structure/kr/communication-services/publishing/share-image.svg"}}, "available": true, "methodology": 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