WDC options: estimated premium turnover $39M; largest line WDC280121P00400000 (Put) $2M (expires 2028-01-21)WDC 期权异动：所扫描合约成交权利金估算约 $39M；最大合约 WDC280121P00400000（看跌期权 Put）约 $2M（2028-01-21 到期）
Options Flow Snapshot
Estimated premium turnover across the scanned WDC contracts was $39M on 12,668 contracts. The call/put volume ratio was 1.3x (calls 7,118 / puts 5,550). The largest line was WDC280121P00400000 (Put), with estimated premium turnover of $2M and expiration on 2028-01-21. The nearest expiration was 2026-09-04; the ATM options implied a move of about 5.6%. Average call IV was 54.7%, average put IV was 73.2%, and put/call IV skew was +18.5 pts.
Signal Read-Through
The measurements show a change in concentration and relative options pricing. Call/put volume, the largest contract, and IV skew describe the observed contract structure; they do not identify the initiating buyer or seller and do not by themselves establish a net long or short direction.
Fundamental and Event Cross-Check
The underlying moved -1.9% in the same snapshot. This is concurrent market context, not evidence that the options flow caused the move.
Follow-Up Markers
Watch whether volume and open interest increase together in the largest contract, whether ATM implied volatility persists, and whether call/put activity and IV skew continue in the same direction into expiration. A single snapshot is not a trade recommendation.
期权成交结构
WDC 所扫描合约权利金成交额估算为 $39M，成交量 12,668 张；Call/Put 成交量比为 1.3x（Call 7,118 张 / Put 5,550 张）。最大合约为 WDC280121P00400000（看跌期权 Put），权利金成交额估算 $2M，到期日 2028-01-21。最近到期日为 2026-09-04，ATM 隐含波动对应的价格区间约 5.6%；平均 Call IV 为 54.7%，平均 Put IV 为 73.2%，Put/Call IV 偏斜为 +18.5 pts。
信号含义
这组数据说明成交集中度和期权相对定价发生变化。Call/Put 成交量、最大合约和 IV 偏斜只描述所观察到的合约结构；它们不能识别每笔交易的主动买卖方，也不能单独证明净多头或净空头方向。
基本面与事件交叉验证
同期标的价格变动为 -1.9%，这是并列的市场背景，不证明期权成交导致了该价格变化。
后续关注
关注最大合约后续成交量与未平仓量是否同步增加、ATM 隐含波动是否维持，以及临近到期时 Call/Put 成交与 IV 偏斜是否继续同向变化。单次快照不构成交易建议。
This analysis was generated by InvestLog AI based on SEC filings, Form 4 insider transactions, Form 144 planned-sale notices, 13F institutional holdings, analyst ratings, and market data. It is for informational purposes only and does not constitute investment advice.这篇研究由 InvestLog AI 基于 SEC 披露、Form 4 内部人交易、Form 144 计划减持、13F 机构持仓、分析师评级和市场数据生成。内容仅供参考，不构成投资建议。