512890午盘跌0.50%，后半小时成交额增57%

[ { "event_id": "20260902-1130-512890-midday", "title": "512890 午盘跌 0.50%，成交额 7.32 亿元", "event_time_utc": "2026-09-02T03:30:00Z", "event_time_quality": "exact", "published_at_utc": "2026-09-02T03:31:34Z", "event_type": "fund_flow", "asset_keys": [ "DIVIDEND" ], "direction_score": -0.36, "confidence": 0.98, "horizon": "intraday", "raw_facts": { "cutoff_time": "2026-09-02 11:30:00+08:00", "price_yuan": 1.202, "change_pct": -0.50, "turnover_yuan": 732000000, "top10_holdings_breadth": { "up": 2, "flat": 1, "down": 7, "names": [ "上海银行", "南京银行", "平安银行", "成都银行", "格力电器", "江苏银行", "山东高速", "沪农商行", "陕鼓动力", "民生银行" ], "largest_gain": { "name": "格力电器", "change_pct": 0.08 }, "largest_loss": { "name": "陕鼓动力", "change_pct": -1.47 } }, "comparison_last_comparable_session": { "date": "2026-08-31", "price_yuan": 1.194, "change_pct": 0.84, "turnover_yuan": 558000000, "top10_holdings_breadth": { "up": 8, "flat": 0, "down": 2 }, "price_level_change_pct": 0.67, "change_pct_gap_pp": -1.34, "turnover_change_pct": 31.18 } }, "transmission_chain": "午盘价格由 8 月 31 日同口径的 1.194 元升至 1.202 元，价位高 0.67%，但日内涨跌幅由+0.84%转为-0.50%，差值为-1.34 个百分点；同时前十大重仓股由 8 涨 0 平 2 跌转为 2 涨 1 平 7 跌。场内成交额由 5.58 亿元升至 7.32 亿元，增加 31.18%，这只说明交易活跃度上升，不等同基金份额或净申赎增加，因此对 DIVIDEND 路由的短线方向判断为偏弱。", "invalidation_conditions": "若后续交易时段价格回到 1.202 元上方并收窄跌幅或翻红，或新的基金份额、净申赎数据呈现相反方向，则本条盘中偏弱判断失效。", "source_urls": [ "https://finance.sina.com.cn/money/fund/aiassistant/etfwp/2026-09-02/doc-iniqkzma1394316.shtml", "http://finance.sina.com.cn/money/fund/aiassistant/etfwp/2026-08-31/doc-iniqepev4706026.shtml" ], "source_tier": "Tier B" }, { "event_id": "20260902-113002-512890-trades", "title": "512890 11:00—11:30 成交 6163.66 万元", "event_time_utc": "2026-09-02T03:30:02Z", "event_time_quality": "exact", "published_at_utc": null, "event_type": "fund_flow", "asset_keys": [ "DIVIDEND" ], "direction_score": -0.46, "confidence": 0.96, "horizon": "intraday", "raw_facts": { "window": "2026-09-02 11:00:00—11:30:02+08:00", "price_marker_note": "搜狐逐笔接口用价格正负号标记成交方向；以下价格字段取绝对值，成交量与成交额按原始字段汇总。", "segments": [ { "window": "11:00—11:15", "records": 145, "volume_lots": 199692, "turnover_wan_yuan": 2397.44, "first_price_yuan": 1.204, "last_price_yuan": 1.205, "largest_trade": { "time": "11:09:12", "price_yuan": 1.204, "volume_lots": 20206, "turnover_wan_yuan": 243 } }, { "window": "11:15—11:30", "records": 152, "volume_lots": 313396, "turnover_wan_yuan": 3766.22, "first_price_yuan": 1.204, "last_price_yuan": 1.202, "largest_trade": { "time": "11:23:08", "price_yuan": 1.202, "volume_lots": 56169, "turnover_wan_yuan": 675 } } ], "combined": { "volume_lots": 513088, "turnover_wan_yuan": 6163.66 }, "second_segment_vs_first": { "volume_change_pct": 56.94, "turnover_change_pct": 57.09 } }, "transmission_chain": "11:15—11:30 成交量由 199692 手增至 313396 手，成交额由 2397.44 万元增至 3766.22 万元，分别增加 56.94%和 57.09%；同一时段价格从 1.204 元附近走到 1.202 元。成交活动后移且价格走弱，强化 DIVIDEND 路由的盘中谨慎信号，但逐笔成交是场内交易数据，不能单独推断基金申赎方向。", "invalidation_conditions": "若后续交易时段价格重新站上 1.205 元并伴随成交活动扩散，或基金份额、净申赎数据确认资金方向相反，则本条盘中谨慎信号失效。", "source_urls": [ "[https://hq.[stock.sohu.com/cn/890/cn_512890-3-7.html](https://hq.stock.sohu.com/cn/890/cn_512890-3-7.html)](https://stock.sohu.com/cn/890/cn_512890-3-7.html](https://hq.stock.sohu.com/cn/890/cn_512890-3-7.html))", "[https://hq.[stock.sohu.com/cn/890/cn_512890-3-8.html](https://hq.stock.sohu.com/cn/890/cn_512890-3-8.html)](https://stock.sohu.com/cn/890/cn_512890-3-8.html](https://hq.stock.sohu.com/cn/890/cn_512890-3-8.html))" ], "source_tier": "Tier B" } ]