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卖出深度虚值期权的90%盈利(量化python代码解析)

  • 2026-01-31 19:13:39
卖出深度虚值期权的90%盈利(量化python代码解析)

声明:本内容为个人业余研究,所有标的代码仅做为示例,回测收益不代表未来,不做为投资建议。

卖出深度虚值期权是一种高胜率,像卖彩票的策略,旨在从时间价值衰减中获利,是时间的朋友。这种策略的核心在于识别那些权利金合理、风险可控且到期概率较高的合约。上一篇文章获取当前未到期800支期权行情数据,今天将介绍三层过滤策略,通过时间维度、希腊字母特征和隐含波动率指标逐步筛选具备卖出价值的深度虚值期权。该策略的核心逻辑在于通过多维度数据交叉验证,平衡风险与收益。

一、整体策略的逻辑架构

本策略采用递进式过滤机制,每层聚焦不同关键指标,形成漏斗型筛选流程:

  1. 第一层过滤:建立基础门槛,剔除流动性不足或临近到期的合约。重点考察剩余期限(10-45天)与权利金水平(>0.01元),确保标的具备基本交易价值。
  2. 第二层过滤:引入希腊字母Delta作为核心指标,锁定delta值介于0.2-0.3区间的虚值合约。此范围既保留一定方向敏感性,又避免过度暴露于价格波动风险。
  3. 第三层过滤:通过隐含波动率(IV)评估市场情绪,优先选择IV低于20%的合约。低IV环境意味着较低的时间价值衰减速度,有利于卖方获取更稳定的theta收益。

三层过滤环环相扣,最终输出符合严格标准的候选合约池。

二、各层过滤的具体实现

(一)第一层过滤:基础条件筛查

deffilter_first_layer(basic_info_path, daily_data_dir, current_date=None):# 加载期权基本信息表    df_basic = pd.read_csv(basic_info_path)# 计算剩余到期天数    log.info("计算剩余到期天数...")    df_basic['days_to_expiry'] = df_basic['delist_date'].apply(lambda x: calculate_days_to_expiry(x, current_date)    )# 过滤剩余10-45天的合约    log.info("过滤剩余10-45天的合约...")    df_time_filtered = df_basic[        (df_basic['days_to_expiry'] >= 10) &         (df_basic['days_to_expiry'] <= 60)    ].copy()if df_time_filtered.empty:        log.warning("没有符合条件的合约(剩余10-45天)")return pd.DataFrame()# 获取权利金并过滤 > 0.0100    log.info("获取权利金并过滤 > 0.0100...")    premiums = []    valid_indices = []for idx, row in df_time_filtered.iterrows():        ts_code = row['ts_code']        premium = get_latest_premium(ts_code, daily_data_dir)if premium isnotNoneand premium > 0.0100:            premiums.append(premium)            valid_indices.append(idx)else:if premium isNone:                log.debug(f"期权 {ts_code} 权利金获取失败")else:                log.debug(f"期权 {ts_code} 权利金 {premium} 不符合条件")# 创建过滤后的DataFrame    df_filtered = df_time_filtered.loc[valid_indices].copy()    df_filtered['premium'] = premiums# 解析期权名称信息    log.info("解析期权名称信息...")    parsed_info = []for name in df_filtered['name']:        info = parse_option_name(name)        parsed_info.append(info)return df_filtered

关键作用解析

  • 时间窗口设定:将剩余期限限定在10-45天,避开短期即将到期导致的流动性骤降,同时防止长期持仓带来的不确定性增加。
  • 权利金门槛:设置最低0.01元的权利金标准,直接排除低价垃圾合约,减少无效交易成本。
  • 动态数据抓取:通过get_latest_premium函数实时获取最新成交价,保证数据的时效性。

(二)第二层过滤:Delta与虚实程度判定

deffilter_second_layer(df_first_filtered, current_date=None):    log.info("=" * 50)    log.info("开始第二层过滤:Delta 0.2-0.3的虚值合约")    log.info("=" * 50)    risk_free_rate = 0.02# 无风险利率假设    historical_volatility = 0.20# 历史波动率假设    valid_indices = []    deltas = []    underlying_prices = []    is_out_of_money_list = []for idx, row in df_first_filtered.iterrows():        name = row['name']        ts_code = row['ts_code']        strike_price = row.get('strike_price', row.get('exercise_price'))# 确定期权类型        option_type = Noneif'option_type'in row:            option_type = 'call'if row['option_type'] == '认购'else'put'else:if'认购'in name:                option_type = 'call'elif'认沽'in name:                option_type = 'put'ifnot option_type:            log.warning(f"无法确定期权类型: {name}")continue# 获取标的资产价格        underlying_symbol = row.get('underlying')if pd.isna(underlying_symbol):            underlying_symbol = name.split('期权')[0] + '期权'if'期权'in name else name        S = get_underlying_price(underlying_symbol)if S isNone:            log.warning(f"无法获取标的资产价格: {underlying_symbol}")continue# 执行价格与剩余时间处理        K = float(strike_price)        days_to_expiry = row.get('days_to_expiry'or calculate_days_to_expiry(row['delist_date'], current_date)        T = days_to_expiry / 365.0# 计算Delta值        delta = calculate_delta(S, K, T, risk_free_rate, historical_volatility, option_type)if delta isNone:            log.warning(f"无法计算Delta值: {ts_code}")continue# 判断虚值状态        is_otm = is_out_of_money(S, K, option_type)# 满足条件则记录if0.2 <= delta <= 0.4and is_otm:            valid_indices.append(idx)            deltas.append(delta)            underlying_prices.append(S)            is_out_of_money_list.append(is_otm)else:            log.debug(f"期权 {ts_code} 不符合第二层条件: Delta={delta:.3f}, 虚值={is_otm}")return df_first_filtered.loc[valid_indices]

核心逻辑说明

  • Delta区间选择:0.2-0.3的Delta范围对应温和的方向预期,既不像深度实值合约那样缺乏弹性,也不会像平值合约那样敏感度过高。
  • 虚值状态验证:通过is_out_of_money函数严格区分实值/虚值,确保只保留真正的深度虚值合约。
  • 参数敏感性测试:默认采用2%的无风险利率和20%的历史波动率,实际应用中可根据市场环境调整。

(三)第三层过滤:隐含波动率校验

deffilter_third_layer(df_second_filtered, current_date=None):try:        risk_free_rate = 0.02        valid_indices = []        implied_volatilities = []for idx, row in df_second_filtered.iterrows():            name = row['name']            ts_code = row['ts_code']            strike_price = row.get('strike_price', row.get('exercise_price'))            market_price = row.get('premium')if market_price isNoneor market_price <= 0:                log.warning(f"期权市场价格无效: {ts_code}, 价格={market_price}")continue# 确定期权类型            option_type = Noneif'option_type'in row:                option_type = 'call'if row['option_type'] == '认购'else'put'else:if'认购'in name:                    option_type = 'call'elif'认沽'in name:                    option_type = 'put'ifnot option_type:                log.warning(f"无法确定期权类型: {name}")continue# 获取标的资产价格            S = row.get('underlying_price')if S isNone:                underlying_symbol = row.get('underlying')if pd.isna(underlying_symbol):                    underlying_symbol = name.split('期权')[0] + '期权'if'期权'in name else name                S = get_underlying_price(underlying_symbol)if S isNone:                log.warning(f"无法获取标的资产价格: {ts_code}")continue# 执行价格与剩余时间处理            K = float(strike_price)            days_to_expiry = row.get('days_to_expiry'or calculate_days_to_expiry(row['delist_date'], current_date)            T = days_to_expiry / 365.0# 计算隐含波动率            iv = calculate_implied_volatility(S, K, T, risk_free_rate, market_price, option_type)if iv isNone:                log.warning(f"无法计算隐含波动率: {ts_code}")continue# IV阈值检查if iv < 0.20:                valid_indices.append(idx)                implied_volatilities.append(iv)else:                log.debug(f"期权 {ts_code} 不符合第三层条件: IV={iv:.3f}")return df_second_filtered.loc[valid_indices]

技术要点剖析

  • IV逆向推导:使用calculate_implied_volatility函数反向求解BS模型中的σ,反映市场对未来波动的预期。
  • 阈值合理性:20%的IV上限针对国内市场特点设定,若遇极端行情可适当放宽至25%。
  • 异常值处理:对缺失或无效的市场价进行标记,避免错误传导至后续环节。

本文提出的三层过滤策略通过标准化流程解决了深度虚值期权筛选,后面可在现有基础上添加趋势强度评分、资金流向监控等,及时修正偏离现实的预设参数。

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  1. CONNECT:[ UseTime:0.000927s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000907s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000958s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000390s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000475s ]
  6. SELECT * FROM `set` [ RunTime:0.000607s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000623s ]
  8. SELECT * FROM `article` WHERE `id` = 469885 LIMIT 1 [ RunTime:0.001660s ]
  9. UPDATE `article` SET `lasttime` = 1770456150 WHERE `id` = 469885 [ RunTime:0.014500s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.004480s ]
  11. SELECT * FROM `article` WHERE `id` < 469885 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.003398s ]
  12. SELECT * FROM `article` WHERE `id` > 469885 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002336s ]
  13. SELECT * FROM `article` WHERE `id` < 469885 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001873s ]
  14. SELECT * FROM `article` WHERE `id` < 469885 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.020855s ]
  15. SELECT * FROM `article` WHERE `id` < 469885 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.005397s ]
0.128262s