SPY options: $890M premium turnover into 2026-08-13; largest line SPY270917P00850000 $106MSPY 期权异动：期权成交额约 $890M，到期 2026-08-13，最大合约 SPY270917P00850000 约 $106M
Options Flow Snapshot
On August 13, 2026, the SPDR S&P 500 ETF (SPY) recorded total options volume of 2,806,240 contracts, with total premium turnover of $890 million, equivalent to 4.2% of the underlying stock’s daily dollar trading volume. The most active single contract was the SPY270917P00850000 put option, a deep out-of-the-money put with a $850 strike price expiring September 17, 2027, generating $106 million in premium turnover across 12,447 contracts. The at-the-money (ATM) straddle implied price move was 0.5%, with average near-the-money call IV at 65.6% and average put IV at 57.2%, creating a -8.4 percentage point call-put IV skew (call IV higher than put IV).
Signal Read-Through
This signal combines two key observations: first, extremely high overall options liquidity, a concentrated trading event for the world’s largest listed S&P 500 ETF; second, a single large long-dated deep out-of-the-money put contract, paired with a call IV premium over put IV. The structure reflects mixed market sentiment, with both downside protection demand and elevated call option pricing.
Fundamental and Event Cross-Check
SPY is the largest listed S&P 500 ETF, so its options activity serves as a reliable barometer for US large-cap market risk sentiment. The trading occurred on August 13, 2026, one day after August 12, 2026 market coverage of softer CPI data, AI stock gains, and analyst S&P 500 target price hikes. Verifiable regulatory filings include the May 28, 2026 NPORT-P and May 29, 2026 N-30D, which are SPY’s periodic disclosure filings with no reported major portfolio changes; SPY has no recent valid earnings data, with the last public earnings reported in 2017.
Follow-Up Markers
This signal does not confirm the intent of the large put contract (whether it is hedging or speculative positioning) or predict near-term SPY price movement. Follow-up items to monitor include SPY’s next-day price action, shifts in the call-put IV skew, and whether the large put position is closed or rolled forward.
期权成交结构
2026年8月13日，标普500ETF（SPY）的期权总成交量达2,806,240张合约，总权利金成交额约8.90亿美元，占当日SPY现货成交额的4.2%。当日最活跃单笔合约为到期日2027年9月17日、行权价850美元的看跌期权SPY270917P00850000，该合约为深度虚值看跌期权，权利金成交额达1.06亿美元，成交量12,447张。同期平值期权隐含波动幅度为0.5%，近价看涨期权平均隐含波动率（IV）为65.6%，看跌期权平均IV为57.2%，看涨看跌IV价差为-8.4个百分点，即看涨期权隐含波动率高于看跌期权。
信号含义
本次信号兼具两个核心特征：一是整体期权成交活跃度极高，属于全球最大标普500ETF的集中流动性事件；二是存在单笔大额远月深度虚值看跌期权成交，叠加看涨期权IV高于看跌期权的偏斜结构，整体反映出混合的市场情绪——既有针对大盘下行的保护需求，也存在看涨期权的溢价定价。
基本面与事件交叉验证
SPY作为全球规模最大的标普500ETF，其期权成交数据可直接反映美国大盘股整体的风险偏好。本次成交发生在2026年8月13日，前一日市场出现CPI数据疲软、AI个股上涨以及华尔街分析师上调标普500目标价的行情。可交叉验证的监管文件为2026年5月28日的NPORT-P和5月29日的N-30D，均为SPY的定期披露文件，未披露近期持仓的重大调整；SPY近年无有效财报数据，最近一次公开财报为2017年的记录。
后续关注
本次信号无法证明该大额看跌合约的交易意图（是套期保值还是投机性押注），也无法确认该成交是否会直接影响SPY的短期价格走势。后续需关注SPY次日价格表现、看涨看跌IV偏斜的变化，以及该大额看跌仓位是否会被平仓或展期。
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。