2月2日晚间，国投瑞银基金管理有限公司（以下简称"国投瑞银"）突发公告，宣布对旗下国投瑞银白银 期货证券投资基金（LOF，下称"国投白银LOF"）所持6只白银期货合约估值方法进行调整。 受此影响，该基金A类份额当日复权单位净值单日暴跌超31%，突破公募基金单日波动常规区间，而"交 易结束后才发布公告"的操作，引发市场高度关注与投资者广泛争议。对此，国投瑞银针对估值调整必 要性及公告时点考量，向南都·湾财社记者作出了回应。 突发公告： 调整估值方法，净值单日跌超31% 根据国投瑞银2月2日晚间发布的《关于旗下基金估值调整的公告》，公司决定自当日起，对国投白银 LOF持有的AG2604、AG2605、AG2606、AG2608、AG2610、AG2612共6只白银期货合约，调整估值 计算规则。 新的估值方法将参考"估值日北京时间下午3点的白银期货国际主要市场价格相对前一交易日同期价格的 波动幅度"，替代此前"以上海期货交易所当日期货合约结算价估值"的行业常规做法。 天天基金网数据显示，此次估值调整直接引发国投白银LOF净值剧烈波动：该基金A类份额单位净值从 前一交易日的3.2838元骤降至2.2494元，C类份额 ...

Group 1: Report Industry Investment Ratings - Not provided in the content Group 2: Core Views of the Report - The A - share index has rebounded continuously, with significant inflows into broad - based ETFs recently, and the downside space is limited. The RMB exchange rate has risen significantly, and core assets are expected to rise. The post - holiday market has a strong upward momentum, and it is recommended to hold bull spread portfolios and build covered call portfolios [3]. - The current abundant capital supports the bond market, but concerns about supply and the strengthening of equities restrain the performance of long - term bonds. Market consistency behavior may amplify fluctuations, and the stabilization or repair of long - term bonds will occur after the supply structure of government bonds becomes clearer [3]. - Geopolitical risks and tight supply continue to drive up the prices of non - ferrous metals and precious metals. Gold is expected to maintain high - volatility operation in January, and silver is recommended to be lightly long - held with low positions in high - volatility markets [3]. - Steel production is being cut and inventories are being reduced, and steel prices are expected to fluctuate within a range. In the iron ore market, more steel mills are resuming production, and attention should be paid to the impact of finished product export policies [3]. - Coal prices in Shanxi are running weakly, and coking coal and coke are viewed bearishly. The market sentiment for ferrosilicon has improved, and the price of manganese silicon is affected by ore support and supply - demand contradictions [3]. - Concerns about the stability of metal supply have intensified, driving up copper prices. Aluminum prices have reached new highs, but there are signs of over - rising in the short term. Zinc prices have moved up, and tin prices are oscillating strongly [3]. - The organic silicon industry is reducing production to support prices, and the polysilicon futures have fallen after rising. The lithium carbonate market has a strong sentiment, and supply disruptions are expected to intensify [3]. - The prices of PX and PTA are expected to oscillate at high levels, and short - fiber follows the raw material fluctuations. The supply and demand of bottle chips are both decreasing in January, and the processing fee has limited upward space [3]. - Ethanol is in a seasonal inventory - building period, and the price is under pressure. The supply - demand situation of benzene is slightly improving, but high inventories still put pressure on prices [3]. - The LLDPE market has strong orders, and the price of PP has strengthened slightly. The port price of methanol is strong, and the futures of caustic soda have rebounded strongly [3]. - The PVC market has a weak supply - demand pattern, and the urea market has improved after the Indian tender results were announced. The soda ash and glass markets have rebounded due to macro factors, and attention should be paid to the sustainability of production and sales [3]. - The prices of agricultural products such as soybeans, rapeseed meal, and corn are expected to oscillate. The prices of edible oils are oscillating within a range, and the prices of sugar are rebounding slightly [3]. - The egg supply is stable, and the apple market is driven by the shortage of high - quality fruits. The price of cotton is expected to oscillate strongly, and the price of red dates has stabilized [3]. Group 3: Summaries by Relevant Catalogs Daily Selected Views - Nickel (NI2602) is expected to fluctuate strongly; Methanol (MA2605) is expected to be strong in the short term; Iron ore (I2605) is recommended for short - term long - position attempts; Live pigs (LH2603) are expected to fluctuate strongly; Silver (AG2604) is expected to fluctuate strongly [3]. Full - Variety Daily Reviews Financial Sector - **Stock Index Futures**: The A - share index has rebounded, and the stock index has reached new highs. It is recommended to hold bull spread portfolios and build covered call portfolios. Core assets and technology - leading stocks represented by IH and IC are dominant [3]. - **Treasury Bond Futures**: The bond market is supported by abundant funds, but long - term bonds are restricted. It is recommended to wait and see in the short term, focus on cash - and - carry arbitrage, and steepen the yield curve [3]. - **Precious Metals**: Geopolitical risks and tight supply drive up prices. Gold should be held long above $4300, silver should be lightly long - held with low positions, and platinum and palladium should be long - held at low positions [3]. Commodity Sector - **Steel and Iron**: Steel prices are range - bound, iron ore is recommended for short - term long - positions, coking coal and coke are bearish, ferrosilicon is expected to fluctuate strongly, and manganese silicon is for range - bound operations [3]. - **Non - Ferrous Metals**: Copper prices are rising, aluminum prices are at new highs but not recommended to be chased, zinc prices are rising, tin prices are strongly oscillating, and nickel and stainless steel are recommended for long - positions at low prices [3]. - **New Energy and Chemicals**: Organic silicon and polysilicon futures have fallen after rising, lithium carbonate is recommended to wait and see, PX and PTA are for high - level oscillations and low - level long - positions, and short - fiber follows raw material fluctuations [3]. - **Energy and Chemicals**: LLDPE is recommended for short - term long - positions, PP should focus on PDH profit expansion, methanol is recommended for long - positions at low prices, and caustic soda is recommended to wait and see [3]. - **Agricultural Products**: Soybeans, rapeseed meal, and corn are expected to oscillate, edible oils are range - bound, sugar is slightly rebounding, cotton is expected to oscillate strongly, and red dates are recommended to sell out - of - the - money call options [3].

1. Report's Industry Investment Ratings - Not provided in the given content 2. Core Views of the Report - The short - term negative factors for the index have been exhausted, and it has rebounded continuously. The broad - based ETFs have also clearly flowed back recently, with limited downside space. The volatility is showing signs of recovery, and the RMB exchange rate has risen significantly. Core assets are expected to rise. Before the festival, there may be capital withdrawals, and there will be short - term fluctuations [3]. - The sentiment in the bond market has recovered, but the overall market sentiment is fragile and sensitive to negative factors. In the short term, with unclear positive factors, the bond market may maintain a volatile trend [3]. - For precious metals, the market sentiment needs time to recover after the sharp fall in the gold market due to rapid capital outflows. The "irrational" upward trend of silver is expected to end, bringing volatility reduction [3]. - The steel market is in a state of production reduction and inventory reduction, and the price maintains a range - bound trend [3]. - The new energy market has different trends. For example, the industrial silicon futures have rebounded in a volatile manner, while the lithium carbonate market has seen significant adjustments due to the profit - taking of risk - averse funds before the festival [3]. 3. Summaries According to Different Categories 3.1 Futures Variety Views - **Non - ferrous Metals**: - Copper: The copper price has corrected, and the spot discount has narrowed. It is recommended to take profits on long positions when the price is high. The main contract focuses on the support level of 95,500 - 96,000 [3]. - Aluminum: The spot discount has widened to a high value this year. Long positions can take short - term profits when the price is high. The main contract operates in the range of 21,800 - 22,800, and long positions can be arranged after the price correction [3]. - Zinc: The decline in TC supports the price, and the spot performance is average. The main contract refers to the range of 22,800 - 23,800, with a low - buying strategy in the range, and the cross - market reverse arbitrage should be continued to hold [3]. - **Energy and Chemicals**: - PX: The short - term is in a high - level volatile state; the medium - term should be treated with a low - buying strategy; the long - short spread between PX2605 and PX2609 should be mainly long at low levels [3]. - PTA: The short - term is in a high - level volatile state; the medium - term should be treated with a low - buying strategy; the long - short spread between TA2605 and TA2609 should be mainly long at low levels [3]. - Methanol: Affected by geopolitical factors, the price has risen significantly. It is recommended to reduce the MTO spread of the 05 contract [3]. - **Agricultural Products**: - Corn: The upward momentum is insufficient, and the market has fallen after rising. It is in a weakly volatile state [3]. - Cotton: The supply - demand outlook is optimistic. Attention should be paid to the restocking situation of downstream enterprises. It is in a strongly volatile state [3]. - Apple: The demand is weak, and the price is falling. It is recommended to close long positions at an appropriate time [3]. 3.2 Futures Variety Operation Suggestions - **Stock Index Futures**: It is recommended to continue to hold the bull spread portfolio and match it with a small amount of short - selling near - month out - of - the - money call options for hedging [3]. - **Treasury Bond Futures**: In the short term, pay attention to the capital situation and the central bank's bond - buying situation. In the medium term, pay attention to the performance of the first - quarter economic start and the stock market trend. The unilateral strategy is to wait and see for the time being, continue to pay attention to the positive arbitrage in the spot - futures strategy, and still tend to steepen the yield curve in the curve strategy [3]. - **Precious Metal Futures**: Gold is recommended to be purchased at a low price after the Spring Festival. For silver, before the New Year's Day, it is recommended to close or lock the positions and wait for a suitable allocation window after the festival [3].