金属期权 2025-10-13 金属期权策略早报 | 卢品先 | 投研经理 | 从业资格号：F3047321 | 交易咨询号：Z0015541 | 邮箱：lupx@wkqh.cn | | --- | --- | --- | --- | --- | | 黄柯涵 | 期权研究员 | 从业资格号：F03138607 | 电话：0755-23375252 | 邮箱：huangkh@wkqh.cn | | 李仁君 | 产业服务 | 从业资格号：F03090207 | 交易咨询号：Z0016947 | 邮箱：lirj@wkqh.cn | 金属期权策略早报概要：（1）有色金属区间震荡，构建卖方中性波动率策略策略；（2）黑色系维持大幅度波动的 行情走势，适合构建做空波动率组合策略；（3）贵金属多头上涨突破上行，构建现货避险策略。 表1：标的期货市场概况 | 期权品种 | 标的合约 | 最新价 | 涨跌 | 涨跌幅 | 成交量 | 量变化 | 持仓量 | 仓变化 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | | | | （%） | (万手) | | ...

华尔街的警告：美国经济"过热"狂飙，散户何去何从？ 七点半的唐人街，空气中弥漫着油条的香气，却掩盖不住老胡眉头紧锁的忧虑。隔壁桌的老胡正唉声叹 气，抱怨着股票又跌了。电视屏幕上，高盛、瑞银、花旗三大投行赫然在列，集体发出警告：美国经济 已进入"过热"状态，犹如一口即将烧穿的铁锅。这消息一出，不仅老胡，就连隔壁刚入股市的小王也感 到不安。 瑞银将目光投向小盘股，认为在当前的市场环境下，小盘股更有可能跑赢大盘，且估值较低，有上涨空 间。花旗则建议关注铜期权，认为美国原油消耗量的增加将带动全球石油需求上涨2-3%，从而推高油 价。甚至连墨西哥比索也被点名，理由是既能赚取利息，又能分享美国经济发展的红利。华尔街的"聪 明人"早已为自己找到了出路，留给普通投资者的，却可能是一地鸡毛。 老一辈股民还记得，十多年前炒股买基金，靠的是信息和时间。谁能坚持到最后，谁就能成为赢家。散 户们守在家中，翻看报纸，收听广播，坚信只要有足够的耐心，市场总会给予回报。那时没有这么多复 杂的金融衍生品、杠杆和套利，买卖全凭良心，盈亏都认命。而现在，金融产品如同"套餐"般捆绑销 售，手续费名目繁多，割韭菜的套路明目张胆。 此前还谨慎预测经济可 ...

华尔街的顶级投行们正在悄然调整航向，并非依旧沉浸在对经济放缓的预期中，而是开始积极备战一种截然不同的局面：美国经 济可能不会如市场先前普遍预期的那样逐步降温，反而会重新加速。 小盘股机会： 瑞银的历史数据显示，在经济扩张阶段，无论是经济衰退之后还是中周期放缓之后，小盘股通常表现优于大盘。 在中周期放缓后的12个月内，小盘股的超额收益率平均为8%，而在经济衰退后则能达到20%。瑞银还发现，小盘股当前预期较 低，资金流入有限，这为小盘股提供了可观的向上空间。 达拉斯联邦储备银行行长洛里·洛格近日的表态，为这一转变提供了注脚。她警告称，鉴于通胀水平仍然高于目标，且劳动力市 场仅呈现出温和的松弛迹象，美联储在考虑进一步降息时应保持高度警惕。"持续高企的通胀、韧性十足的市场需求，以及劳动 力市场闲置程度有限"这三重因素叠加，暗示当前的货币政策可能仅仅处于"温和限制性"状态，远未达到抑制经济过热的程度。 美联储内部对是否降息的争论，恰恰反映了政策制定者们在这一问题上的犹豫不决。 与此同时，华尔街已经敏锐地捕捉到了经济"重新加速"的风险，并开始积极布局应对。高盛、瑞银和花旗三大投行在近期发布的 研报中不约而同地指出，这种风 ...

Core Viewpoint - Major Wall Street investment banks, including Goldman Sachs, UBS, and Citigroup, have raised concerns about the increasing risk of a "re-acceleration" of the U.S. economy, driven by resilient labor markets, expectations of fiscal stimulus, and a loose financial environment [1][2] Group 1: Economic Indicators - Goldman Sachs noted that the U.S. economy shows strong performance across multiple key indicators, with a significant rise in the U.S. macroeconomic surprise index and encouraging initial jobless claims data [2] - The global investment research department of Goldman Sachs projects a healthy GDP growth rate of 2.6% for the third quarter [2] - UBS defines economic acceleration as an increase of over 10 points in the ISM manufacturing index within 12 months [3] Group 2: Factors Driving Economic Acceleration - Key factors contributing to the risk of economic re-acceleration include: - Loose financial conditions characterized by strong performance of risk assets, expectations of future rate cuts by the Federal Reserve, and a weaker dollar [2] - Anticipated positive fiscal policy impulses in the first half of next year, alongside continued capital expenditure in the AI sector [2] - A solid consumer base in the U.S. and the impact of deregulation [2] Group 3: Investment Strategies - Investment banks recommend various strategies to hedge against the potential re-acceleration of the U.S. economy: - Consideration of U.S. small-cap stocks, Latin American currency carry trades, steepening yield curves, and commodities [1][2] - UBS highlights that small-cap stocks typically outperform large-cap stocks during economic expansion phases, with median outperformance of 5.4% after mid-cycle slowdowns and 20% after recessions [10][26] - UBS and Citigroup recommend Latin American currency carry trades, particularly emphasizing the Mexican peso for its dual benefits of carry opportunities and potential gains from stronger U.S. growth [15][17] Group 4: Commodity Outlook - Citigroup suggests buying copper options, citing macroeconomic factors and fundamentals that support rising copper prices [28] - UBS recommends oil as a hedging tool, predicting that a 10% increase in energy consumption due to U.S. re-acceleration could raise global oil demand by 2-3%, leading to a quicker market balance [29] Group 5: Yield Curve Strategies - Both Goldman Sachs and Citigroup advocate for strategies to steepen the yield curve as a hedge against the risk of U.S. economic re-acceleration [20][21] - Goldman Sachs suggests going long on the steepening of the 2-year and 10-year Treasury yield curve, while Citigroup believes that even with economic re-acceleration, front-end rates are unlikely to rise significantly due to overly dovish market pricing [20][21]

Group 1: Report Overview - Report title: Metal Options Strategy Morning Report [1] - Date: September 30, 2025 [1] Group 2: Core Views - For non - ferrous metals in range - bound oscillations, construct a neutral volatility strategy for option sellers [2] - For the black metals sector with large - amplitude fluctuations, build a short - volatility portfolio strategy [2] - For precious metals with upward breakouts, construct a spot hedging strategy [2] Group 3: Futures Market Overview - For copper (CU2511), the latest price is 83,680, up 1,610 or 1.96%, with a trading volume of 13.85 million lots (down 3.62 million) and open interest of 21.38 million lots (down 1.53 million) [3] - For aluminum (AL2511), the latest price is 20,770, up 65 or 0.31%, trading volume 13.29 million lots (up 1.77 million), and open interest 20.39 million lots (down 0.89 million) [3] - Similar data are provided for other metals including zinc, lead, nickel, etc. [3] Group 4: Option Factor - Volume and Open Interest PCR - For copper options, the volume PCR is 0.27 (up 0.01), and the open - interest PCR is 0.73 (up 0.02) [4] - For aluminum options, the volume PCR is 0.63 (up 0.01), and the open - interest PCR is 0.90 (up 0.05) [4] - Other metals' PCR data are also presented [4] Group 5: Option Factor - Pressure and Support Levels - For copper options, the pressure point is 92,000, and the support point is 82,000 [5] - For aluminum options, the pressure point is 20,800, and the support point is 19,900 [5] - Pressure and support levels for other metals are also given [5] Group 6: Option Factor - Implied Volatility - For copper options, the at - the - money implied volatility is 20.75%, the weighted implied volatility is 27.04% (down 0.59%), and the difference between implied and historical volatility is 6.29% [6] - For aluminum options, the at - the - money implied volatility is 12.19%, the weighted implied volatility is 14.40% (up 0.16%), and the difference is 1.63% [6] - Implied volatility data for other metals are also provided [6] Group 7: Option Strategies for Non - Ferrous Metals Copper Options - Fundamental analysis: Total inventories in three major exchanges decreased by 0.6 million tons. SHFE inventories decreased by 0.7 to 9.9 million tons, LME inventories decreased by 0.3 to 14.4 million tons, and COMEX inventories increased by 0.4 to 29.1 million tons [7] - Market analysis: Shanghai copper showed a bullish high - level consolidation trend [7] - Option factor analysis: Implied volatility is above the historical average, open - interest PCR is around 0.70, pressure point is 92,000, and support point is 80,000 [7] - Strategy suggestions: Construct a bull - spread strategy for call options and a short - volatility option seller portfolio strategy, and a spot long - hedging strategy [7] Other Non - Ferrous Metals - Strategies for aluminum, zinc, lead, nickel, tin, and lithium carbonate options are also provided, including fundamental analysis, market analysis, option factor analysis, and strategy suggestions [9][10][11] Group 8: Option Strategies for Precious Metals Gold Options - Fundamental analysis: Holdings of major gold ETFs increased by 3.79% this month, and total open interest of Shanghai gold and COMEX gold increased [12] - Market analysis: Shanghai gold continued its bullish trend, reaching a new high [12] - Option factor analysis: Implied volatility is around the historical average, open - interest PCR is below 0.80, pressure point is 888, and support point is 800 [12] - Strategy suggestions: Construct a bull - spread strategy for call options, a short - volatility option seller portfolio strategy, and a spot hedging strategy [12] Silver Options - Strategies for silver options are also provided, including fundamental analysis, market analysis, option factor analysis, and strategy suggestions [12] Group 9: Option Strategies for Black Metals Steel and Iron Ore Options - Strategies for rebar, iron ore, ferroalloys, industrial silicon, polysilicon, and glass options are provided, including fundamental analysis, market analysis, option factor analysis, and strategy suggestions [13][14][15]

Group 1: General Information - The report is a metal options strategy morning report dated September 29, 2025 [1] - The research team includes Lu Pinxian, Huang Kehan, and Li Renjun [2] - The metal - related sectors are divided into non - ferrous metals, precious metals, and black metals. Options strategies and suggestions are provided for selected varieties in each sector [8] Group 2: Market Overview - The report provides the latest prices, price changes, trading volumes, and open interest of various metal futures contracts, such as copper (CU2511 closed at 81,890 with a - 0.79% change), aluminum (AL2511 at 20,660 with a - 0.55% change), etc. [3] Group 3: Option Factors 3.1 Volume and Open Interest PCR - The volume PCR and open interest PCR of different metal options are presented, which are used to describe the strength of the underlying asset's market and potential turning points. For example, the volume PCR of copper is 0.26 with a - 0.02 change, and the open interest PCR is 0.70 with a 0.01 change [4] 3.2 Pressure and Support Levels - The pressure points, support points, and the corresponding offsets of various metal options are given. For instance, the pressure point of copper is 92,000 with an 8,000 offset, and the support point is 80,000 with a 2,000 offset [5] 3.3 Implied Volatility - The report shows the at - the - money implied volatility, weighted implied volatility, changes in weighted implied volatility, annual average implied volatility, call and put implied volatilities, and the difference between implied and historical volatilities for each metal option. For example, the at - the - money implied volatility of copper is 20.97%, and the weighted implied volatility is 27.63% with a 1.87 change [6] Group 4: Strategy Recommendations 4.1 Non - Ferrous Metals - **Copper**: Build a bull spread strategy for directional gain, a short - volatility option seller strategy for time - value gain, and a spot hedging strategy [7] - **Aluminum/Alumina**: For aluminum, build a short - neutral call + put option combination strategy and a spot collar strategy; for alumina, similar strategies are recommended [9] - **Zinc/Lead**: Build a short - neutral call + put option combination strategy and a spot collar strategy for zinc; similar strategies for lead [9] - **Nickel**: Build a short - bearish call + put option combination strategy and a spot covered - call strategy [10] - **Tin**: Build a short - volatility strategy and a spot collar strategy [10] - **Lithium Carbonate**: Build a short - bearish call + put option combination strategy and a spot hedging strategy [11] 4.2 Precious Metals - **Gold/Silver**: For gold, build a bull spread strategy for directional gain, a short - volatility option seller strategy with a positive delta, and a spot hedging strategy; for silver, similar strategies are recommended [12] 4.3 Black Metals - **Rebar**: Build a short - bearish call + put option combination strategy and a spot covered - call strategy [13] - **Iron Ore**: Build a short - neutral call + put option combination strategy and a spot collar strategy [13] - **Ferroalloys**: For manganese silicon, build a short - volatility strategy; for industrial silicon/polysilicon, build a short - volatility option seller strategy and a spot hedging strategy; for glass, build a short - volatility strategy and a spot collar strategy [13][14][15]

1. Report Industry Investment Rating - Not provided in the given content 2. Core Viewpoints of the Report - For non - ferrous metals, construct a seller neutral volatility strategy as they are in a range - bound oscillation; for black metals, build a short - volatility portfolio strategy due to their large - amplitude fluctuations; for precious metals, establish a spot hedging strategy as they are rising and breaking upward [2] 3. Summaries According to Relevant Catalogs 3.1 Futures Market Overview - Copper (CU2511) closed at 82,610, up 2,620 (3.28%), with a trading volume of 5.17 million lots (down 1.15 million) and an open interest of 17.24 million lots (down 0.09 million) [3] - Aluminum (AL2511) closed at 20,805, up 120 (0.58%), with a trading volume of 10.79 million lots (down 1.54 million) and an open interest of 22.13 million lots (down 0.41 million) [3] - Other metals such as zinc, lead, nickel, etc. also have detailed price, trading volume, and open - interest data [3] 3.2 Option Factors - Volume and Open Interest PCR - PCR indicators are used to describe the strength of the option underlying market and the turning point of the market. For example, the open - interest PCR of copper was 0.84 (up 0.06), indicating some support below the price [4] 3.3 Option Factors - Pressure and Support Levels - For copper, the pressure level is 82,000 and the support level is 78,000; for aluminum, the pressure level is 20,800 and the support level is 20,000, etc. These levels are determined by the strike prices of the maximum open - interest call and put options [5] 3.4 Option Factors - Implied Volatility - The implied volatility of copper options was 13.14% (at - the - money), and the weighted implied volatility was 18.20% (down 0.01%). Other metals also have corresponding implied - volatility data [6] 3.5 Strategy and Recommendations 3.5.1 Non - ferrous Metals - **Copper**: Build a bull - spread call option strategy, a short - volatility seller option portfolio strategy, and a spot long - hedging strategy [8] - **Aluminum/Alumina**: Build a short - neutral call + put option combination strategy and a spot collar strategy [9] - **Zinc/Lead**: Build a short - neutral call + put option combination strategy and a spot collar strategy [9] - **Nickel**: Build a short - bearish call + put option combination strategy and a spot covered - call strategy [10] - **Tin**: Build a short - volatility strategy and a spot collar strategy [10] - **Lithium Carbonate**: Build a short - bearish call + put option combination strategy and a spot long - hedging strategy [11] 3.5.2 Precious Metals - **Gold**: Build a bull - spread call option strategy, a short - volatility option seller portfolio strategy, and a spot hedging strategy [12] 3.5.3 Black Metals - **Rebar**: Build a short - bearish call + put option combination strategy and a spot long - covered - call strategy [13] - **Iron Ore**: Build a short - neutral call + put option combination strategy and a spot long - collar strategy [13] - **Ferroalloys**: Build a short - volatility strategy for manganese silicon; for industrial silicon/polysilicon, build a short - volatility call + put option combination strategy and a spot hedging strategy; for glass, build a short - volatility call + put option combination strategy and a spot long - collar strategy [13][14][15]

1. Report Industry Investment Rating - No information provided in the document 2. Core Viewpoints of the Report - For non - ferrous metals, construct a seller neutral volatility strategy as they are in a range - bound oscillation [2] - For black metals, build a short - volatility portfolio strategy due to their large - amplitude fluctuations [2] - For precious metals, create a spot hedging strategy as they are rising and breaking through [2] 3. Summary by Related Catalogs 3.1 Market Overview of Underlying Futures - Copper (CU2511): Latest price 80,100, down 20 (-0.02%), volume 6.34 million lots, open interest 17.70 million lots [3] - Aluminum (AL2511): Latest price 20,715, down 55 (-0.26%), volume 11.87 million lots, open interest 23.61 million lots [3] - Zinc (ZN2511): Latest price 22,035, up 40 (0.18%), volume 14.05 million lots, open interest 13.04 million lots [3] - And other metal futures with their respective prices, changes, volumes, and open interests [3] 3.2 Option Factors - Volume and Open Interest PCR - Different metal options have their own volume PCR, volume change, open interest PCR, and open interest change, which are used to describe the strength of the option underlying market and the turning point of the market [4] 3.3 Option Factors - Pressure and Support Levels - Each metal option has its pressure point, pressure point offset, support point, support point offset, maximum call open interest, and maximum put open interest, indicating the pressure and support levels of the underlying [5] 3.4 Option Factors - Implied Volatility - The implied volatility of different metal options includes at - the - money implied volatility, weighted implied volatility, its change, annual average, call implied volatility, put implied volatility, 20 - day historical volatility, and the difference between implied and historical volatility [6] 3.5 Strategies and Recommendations for Different Metals 3.5.1 Non - ferrous Metals - Copper: Build a short - volatility seller option portfolio strategy and a spot long - hedging strategy [7] - Aluminum/Alumina: Construct a short - neutral call + put option combination strategy and a spot collar strategy [9] - Zinc/Lead: Build a short - neutral call + put option combination strategy and a spot collar strategy [9] - Nickel: Create a short - bearish call + put option combination strategy and a spot covered call strategy [10] - Tin: Implement a short - volatility strategy and a spot collar strategy [10] - Lithium Carbonate: Build a short - bearish call + put option combination strategy and a spot long - hedging strategy [11] 3.5.2 Precious Metals - Gold/Silver: Construct a bullish call spread strategy, a short - volatility option seller portfolio strategy, and a spot hedging strategy [12] 3.5.3 Black Metals - Rebar: Build a short - bearish call + put option combination strategy and a spot covered call strategy [13] - Iron Ore: Construct a short - neutral call + put option combination strategy and a long - collar strategy [13] - Ferroalloys: Implement a short - volatility strategy [14] - Industrial Silicon/Polysilicon: Build a short - volatility call + put option combination strategy and a spot hedging strategy [14] - Glass: Implement a short - volatility call + put option combination strategy [15]

1. Report Industry Investment Rating No relevant information provided. 2. Core View of the Report - For non - ferrous metals, construct a seller's neutral volatility strategy as they are in a range - bound oscillation; for black metals, build a short - volatility portfolio strategy due to their large - amplitude fluctuations; for precious metals, create a spot hedging strategy as they are rising and breaking through [2]. 3. Summary by Related Catalogs 3.1 Futures Market Overview - The latest prices, price changes, trading volumes, and open interest changes of various metal futures contracts are presented, including copper, aluminum, zinc, etc. For example, the latest price of copper (CU2511) is 80,080, up 260 with a 0.33% increase, and its trading volume is 5.41 million lots with a decrease of 3.52 million lots [3]. 3.2 Option Factors - Volume and Open Interest PCR - The volume and open interest PCR of different metal options are given. For instance, the volume PCR of copper options is 0.65 with a change of 0.01, and the open interest PCR is 0.75 with a change of 0.04 [4]. 3.3 Option Factors - Pressure and Support Levels - The pressure and support levels of various metal options are analyzed. For example, the pressure level of copper options is 82,000 and the support level is 78,000 [5]. 3.4 Option Factors - Implied Volatility - The implied volatility of different metal options is provided, including at - the - money implied volatility, weighted implied volatility, etc. For example, the at - the - money implied volatility of copper options is 12.26%, and the weighted implied volatility is 15.27% with a change of - 1.54% [6]. 3.5 Strategy and Recommendations 3.5.1 Non - ferrous Metals - **Copper**: Build a short - volatility seller option portfolio strategy and a spot long - hedging strategy. The three - exchange copper inventory increased by 11,000 tons. The implied volatility of copper options fluctuates around the historical average, and the open interest PCR indicates some pressure above [7]. - **Aluminum**: Construct a short - neutral call + put option portfolio strategy and a spot collar strategy. The domestic aluminum ingot social inventory increased, and the LME inventory is at a low level. The market shows a long - biased upward and high - level oscillating trend [9]. - **Zinc/Lead**: Build a short - neutral call + put option portfolio strategy and a spot collar strategy. The zinc market shows an oscillating and falling trend after rising, and the implied volatility of zinc options continues to decline [9]. - **Nickel**: Construct a short - bearish call + put option portfolio strategy and a spot covered strategy. The domestic nickel ore port inventory increased, and the market shows a wide - range oscillating trend with bearish pressure above [10]. - **Tin**: Build a short - volatility strategy and a spot collar strategy. The tin production in Yunnan and Jiangxi is affected, and the market shows a short - term high - level oscillating trend with pressure above [10]. - **Lithium Carbonate**: Construct a short - bearish call + put option portfolio strategy and a spot long - hedging strategy. The lithium carbonate production increased, and the market shows a large - amplitude fluctuating and continuously falling trend [11]. 3.5.2 Precious Metals - **Gold/Silver**: Build a bullish option bull - spread combination strategy, a long - biased short - volatility option seller portfolio strategy, and a spot hedging strategy. The relationship between gold and silver prices is related to the overseas manufacturing PMI. The gold market shows a short - term oscillating and strongly breaking - through trend [12]. 3.5.3 Black Metals - **Rebar**: Construct a short - bearish call + put option portfolio strategy and a spot long - covered strategy. The rebar inventory decreased slightly, and the market shows a weak oscillating trend with pressure above [13]. - **Iron Ore**: Build a short - neutral call + put option portfolio strategy and a spot long - collar strategy. The iron ore inventory decreased, and the market shows a range - bound oscillating and rebounding trend [13]. - **Ferroalloys**: Build a short - volatility strategy for manganese silicon. The manganese silicon production decreased, and the market shows a weak and bearish trend [14]. - **Industrial Silicon/Polysilicon**: Construct a short - volatility call + put option portfolio strategy and a spot hedging strategy. The industrial silicon inventory remains high, and the market shows a large - amplitude range - bound oscillating trend [14]. - **Glass**: Build a short - volatility call + put option portfolio strategy and a spot long - collar strategy. The glass inventory decreased in some areas, and the market shows a weak trend with pressure above [15].

1. Report Industry Investment Rating - Not provided in the document 2. Core Views of the Report - For non - ferrous metals, construct a neutral volatility strategy for sellers when the market is range - bound, and a short - volatility strategy for black metals with large fluctuations. For precious metals, build a spot hedging strategy as they break upward [2]. 3. Summary by Related Catalogs 3.1 Futures Market Overview - Various metal futures have different price movements, trading volumes, and open interest changes. For example, copper (CU2511) closed at 79,660, down 0.15% with a trading volume of 8.93 million lots and an open interest of 17.26 million lots [3]. 3.2 Option Factors - Volume and Open Interest PCR - Volume PCR and open interest PCR are used to describe the strength of the option underlying market and the turning point of the market respectively. For instance, the volume PCR of copper is 0.64 with a change of 0.08, and the open interest PCR is 0.71 with a change of - 0.01 [4]. 3.3 Option Factors - Pressure and Support Levels - From the perspective of the maximum open interest of call and put options, the pressure and support levels of each metal option are determined. For example, the pressure point of copper is 82,000 and the support point is 79,000 [5]. 3.4 Option Factors - Implied Volatility - Implied volatility data such as at - the - money implied volatility, weighted implied volatility, and their changes, historical average, call and put implied volatility, and historical volatility are provided for each metal option. For example, the at - the - money implied volatility of copper is 13.02% [6]. 3.5 Option Strategies and Recommendations 3.5.1 Non - ferrous Metals - **Copper**: Build a short - volatility seller option portfolio strategy and a spot long - hedging strategy [7]. - **Aluminum/Alumina**: Construct a short - neutral call + put option combination strategy and a spot collar strategy [9]. - **Zinc/Lead**: Build a short - neutral call + put option combination strategy and a spot collar strategy [9]. - **Nickel**: Construct a short - bearish call + put option combination strategy and a spot covered call strategy [10]. - **Tin**: Build a short - volatility strategy and a spot collar strategy [10]. - **Lithium Carbonate**: Construct a short - bearish call + put option combination strategy and a spot long - hedging strategy [11]. 3.5.2 Precious Metals - **Gold/Silver**: Build a long - biased short - volatility option seller portfolio strategy and a spot hedging strategy [12]. 3.5.3 Black Metals - **Rebar**: Construct a short - bearish call + put option combination strategy and a spot long - covered call strategy [14]. - **Iron Ore**: Build a short - neutral call + put option combination strategy and a spot long - collar strategy [14]. - **Ferroalloys**: Build a short - volatility strategy [15]. - **Industrial Silicon/Polysilicon**: Construct a short - volatility call + put option combination strategy and a spot hedging strategy [15]. - **Glass**: Build a short - volatility call + put option combination strategy and a spot long - collar strategy [16].