SPX Options Data API
Fields, History & WorkflowSPX 期权数据 API
字段、历史数据与工作流
Evaluate an SPX options data API by contract identity, quote timing, settlement conventions, historical depth, data rights, and reproducibility—not by the number of fields in one response.
评估 SPX 期权数据 API 时，重点应放在合约身份、报价时点、结算规则、历史深度、数据授权与可复现性，而不是只看单次响应返回了多少字段。
What an SPX options data API should deliverSPX 期权数据 API 应提供什么
An SPX options data API is useful only when it represents the instrument and the market clock correctly. At minimum, it should identify every contract by expiration, strike, call or put, and contract class; return timestamped bid, ask, last trade, volume, and open interest; and explain whether implied volatility and Greeks are vendor calculations. Historical work additionally needs point-in-time snapshots, correction history, and a license that permits the intended storage and use.
SPX 期权数据 API 是否好用，关键不在字段看起来多不多，而在于能否准确表达合约和市场时点。最低要求是：按到期日、行权价、认购或认沽方向及合约类别识别每份合约；提供带时间戳的买价、卖价、最新成交价、成交量和未平仓量；并说明隐含波动率与希腊值是否由服务商计算。用于历史研究时，还要具备时点快照、修订记录，以及符合存储和使用场景的数据授权。
A current chain can support screening, but it cannot reproduce yesterday's opportunity set. Intraday volatility research needs synchronized quotes; end-of-day risk needs a stable closing convention; backtests need point-in-time history.
SPX contracts are cash-settled index options, but expiration series can differ in settlement timing. Store the contract class and settlement convention rather than inferring them from a shortened display symbol.
Bid, ask, trades, volume, and open interest describe market activity. Implied volatility, Greeks, and theoretical value depend on a model and inputs. Keep both, but never present them as the same type of fact.
当前期权链适合做即时筛选，却无法还原昨天的可交易合约集合。日内波动率研究需要同步报价，日终风险需要稳定的收盘口径，回测则必须使用严格的时点历史数据。
SPX 属于现金结算的指数期权，但不同到期系列的结算时点可能不同。应保存合约类别和结算约定，不能只凭简化后的展示代码推断。
买卖报价、成交、成交量和未平仓量反映市场活动；隐含波动率、希腊值和理论价格则取决于模型与输入。两类数据都可以保留，但不能混为同一种事实。
Required fields and contract identity必备字段与合约标识
Identify the SPX contract before reading its price先确认 SPX 合约，再读取价格
According to the Cboe SPX product page, SPX options use European exercise, cash settlement, and a $100 contract multiplier. That makes SPX materially different from an ETF option such as SPY: there is no delivery of ETF shares at expiration, and the exercise style and settlement process differ. A data pipeline must therefore preserve the actual product family instead of mapping every S&P 500-related symbol to one generic underlying.
根据 Cboe SPX 产品页，SPX 采用欧式行权和现金结算，合约乘数为 100 美元。它和 SPY 这类 ETF 期权并不是同一种产品：到期时不会交割 ETF 份额，行权方式和结算流程也不同。因此，数据管道必须保留真实产品类别，不能把所有与标普 500 相关的代码都映射为同一个通用标的。
Use a stable provider contract ID when one is available, then retain the root or class symbol, underlying identifier, expiration date, strike in explicit units, call/put side, contract multiplier, settlement style, and session. SPX has several expiration families, including standard, weekly, and end-of-month series. The displayed ticker alone may not reveal whether the series is AM- or PM-settled, so settlement metadata belongs in the contract key or an adjacent dimension table.
如果服务商提供稳定的合约 ID，应优先使用，同时保存根代码或类别代码、标的标识、到期日、带明确单位的行权价、认购/认沽方向、合约乘数、结算方式和交易时段。SPX 包含标准到期、周度和月末等不同系列，仅凭展示代码未必能判断采用上午还是下午结算，因此结算信息应进入合约主键或相邻的维度表。
Separate quotes, trades, and daily activity区分报价、成交与日度活动
A chain row often combines values produced on different clocks. Bid and ask describe the latest quote; last price describes a trade that may be older; volume accumulates during a session; open interest is commonly a daily value rather than a live count. The Cboe DataShop FAQ notes that its options open interest is based on the prior night's OCC end-of-day figure and remains static until the following update. Store the source timestamp and update rule for every field group instead of assigning one response timestamp to the entire row.
一条期权链记录里，往往混合了不同时间节奏的数据。买价和卖价对应最新报价，最新成交价可能早于当前报价，成交量在交易日内持续累积，未平仓量通常也不是实时更新。Cboe DataShop 常见问题说明，其期权未平仓量采用前一晚 OCC 的日终数据，并在下一次更新前保持不变。因此，应为各字段组保存来源时间和更新规则，不能给整条记录套用同一个响应时间。
| Field group字段组 | Keep建议保留 | Common mistake常见错误 |
|---|---|---|
| Identity合约身份 | Contract ID, root, expiration, strike, side, class, multiplier合约 ID、根代码、到期日、行权价、方向、类别、乘数 | Joining on display text alone仅按展示文本关联数据 |
| Quote报价 | Bid, ask, sizes, quote time, condition买价、卖价、挂单量、报价时间、状态 | Treating a stale quote as executable把过期报价当成可成交价格 |
| Trade成交 | Price, size, trade time, venue, condition成交价、成交量、成交时间、场所、状态 | Using last trade as a current midpoint把最新成交价当作当前中间价 |
| Daily activity日度活动 | Session volume, open interest, effective date当日成交量、未平仓量、生效日期 | Assuming open interest changes tick by tick误认为未平仓量逐笔更新 |
| Analytics衍生指标 | IV, Greeks, model, rate, dividend and underlying inputsIV、希腊值、模型、利率、股息与标的输入 | Comparing vendor values without assumptions忽略模型假设直接比较服务商结果 |
Preserve time semantics, units, and null states保留时间语义、单位和空值状态
Store the exchange timestamp, provider processing time, retrieval time, time zone, market session, and whether the record is a live observation, delayed value, end-of-day summary, or corrected history. Keep strike and premium units explicit, and retain the multiplier instead of hard-coding it downstream. For time to expiration, record the exact expiration timestamp and day-count convention; an integer “days to expiration” field is not precise enough for same-day contracts.
建议同时保存交易所时间、服务商处理时间、抓取时间、时区、交易时段，以及该记录属于实时、延时、日终还是修订后的历史数据。行权价和权利金单位要写清楚，合约乘数也应随记录保存，不能在下游写死。计算剩余期限时，应记录准确的到期时刻和日计数规则；对于当日到期合约，一个整数形式的“剩余天数”并不够精确。
Null, zero, and unavailable are different states. A zero bid may be a real market observation; a missing bid may mean no quote, an entitlement problem, a symbol mismatch, or a delayed file rule. Preserve provider status and condition codes, reject impossible negative values, and avoid converting parse failures to zero during normalization.
空值、零值和不可用是三种不同状态。买价为零可能是真实市场现象；买价缺失则可能来自无报价、权限不足、代码不匹配或延迟文件规则。规范化时应保留服务商状态码与行情条件码，拒绝不可能出现的负值，也不能把解析失败静默转换成零。
Build a reproducible historical workflow构建可复现的历史数据工作流
Choose a dataset that matches the research clock让数据粒度与研究时钟一致
“Historical options data” can mean a daily chain, an end-of-day summary, interval quotes, every quote update, or every trade. These are not interchangeable. The Cboe DataShop options catalog, for example, lists quotes, trades, end-of-day summaries, and calculated analytics as separate products. Select the lowest resolution that still answers the research question. A daily volatility surface does not require tick data, while an execution study cannot be reconstructed from closing marks alone.
“历史期权数据”可能指每日完整期权链、日终汇总、分钟级报价、逐笔报价更新或逐笔成交，这些数据不能互相替代。以 Cboe DataShop 期权数据目录为例，报价、成交、日终汇总和计算指标会作为不同产品提供。选择时应采用能够回答研究问题的最低必要粒度：构建每日波动率曲面通常不需要逐笔数据，但研究成交执行效果时，仅靠收盘标记价无法还原过程。
| Research job研究任务 | Minimum useful data最低必要数据 | Failure if underspecified粒度不足的后果 |
|---|---|---|
| Current screening即时筛选 | Current chain with quote times and contract identity带报价时间和合约身份的当前期权链 | Stale or incomplete candidates筛出过期或不完整的候选合约 |
| Daily surface每日波动率曲面 | Consistent end-of-day chain plus model inputs口径一致的日终期权链及模型输入 | Mixed close times distort the surface不同收盘时点会扭曲曲面 |
| Intraday signals日内信号 | Timestamped interval or event data synchronized to SPX与 SPX 点位同步的时间区间或事件数据 | Signals use information from different moments信号混入不同时间的信息 |
| Execution research成交执行研究 | Trades with contemporaneous NBBO, size and conditions成交记录及同期 NBBO、数量和状态码 | Unrealistic fill assumptions产生不现实的成交假设 |
| Backtesting策略回测 | Point-in-time chains, revisions and availability timestamps时点期权链、修订记录和实际可获得时间 | Look-ahead and survivorship bias引入前视偏差和存续偏差 |
Build a point-in-time ingestion pipeline构建严格的时点数据管道
- Pin the schema: version field names, types, units, enumerations, and vendor documentation. A renamed field should fail validation instead of silently moving into the wrong column.
- Save immutable raw responses: retain the request parameters, response status, retrieval time, entitlement context, and checksum before normalization.
- Resolve contract identity: map every row to a stable contract key and preserve the vendor's original symbol. Keep expired contracts rather than rebuilding history from today's chain.
- Normalize clocks: convert timestamps to a documented standard while retaining the original exchange time and session. Never discard sub-second precision if the strategy uses event ordering.
- Join synchronized inputs: align option quotes with the relevant SPX index value and with any interest-rate, dividend, or forward assumptions used by the model.
- Publish with provenance: carry source, observation time, retrieval time, adjustment status, and schema version into every derived surface, signal, or export.
- Handle gaps explicitly: mark unavailable contracts and incomplete expirations; do not forward-fill quotes across long gaps or turn missing records into zero prices.
- Retain revisions: store corrected files as new versions so a prior result can be reproduced and differences can be explained.
- 固定数据结构：为字段名、类型、单位、枚举值和服务商文档建立版本。字段改名时应触发校验失败，不能静默写入错误列。
- 保存不可变原始响应：在标准化前保留请求参数、响应状态、抓取时间、权限背景和校验值。
- 统一合约身份：把每条记录映射到稳定合约主键，同时保留服务商原始代码。已经到期的合约也要保存，不能用今天的期权链倒推历史。
- 统一时间轴：将时间戳转换到明确的标准，同时保留原始交易所时间和交易时段。策略如果依赖事件顺序，不要丢失亚秒级精度。
- 同步关联模型输入：将期权报价与对应时点的 SPX 指数点位、利率、股息或远期价格假设对齐。
- 让结果携带来源：任何波动率曲面、信号或导出文件都应保留来源、观测时间、抓取时间、调整状态和结构版本。
- 明确处理缺口：标记不可用合约和缺失到期日，不能跨越长时间缺口填充报价，也不能把缺失记录变成零价格。
- 保留修订版本：修正后的文件应作为新版本保存，确保旧结果仍可复现，差异也有据可查。
Validate snapshots before calculating signals计算信号前先验证快照
Run structural checks before pricing or ranking contracts: unique contract keys, valid expiration order, nonnegative sizes, bid not above ask unless the record is flagged or corrected, coherent strike coverage, and no unexpected disappearance of an expiration family. Compare contract counts and aggregate volume with the source's own daily controls when available. The Cboe DataShop FAQ also explains why some AM-settled SPX options can show zero quote values on expiration day; rules like this should become documented exceptions, not ad hoc data cleaning.
在定价或筛选合约前，先执行结构校验：合约主键是否唯一、到期顺序是否合理、数量是否为非负值、买价是否在未标记异常时高于卖价、行权价覆盖是否连贯，以及某类到期合约是否突然整体消失。如果来源提供日度控制总数，还应核对合约数量和汇总成交量。Cboe DataShop 常见问题还说明，部分上午结算的 SPX 期权在到期日可能显示零报价；这类规则应成为有文档依据的例外，而不是临时的数据清洗判断。
Control backtest and execution bias控制回测偏差与成交假设
A backtest should only use information available at the simulated decision time. Do not calculate a morning signal from an end-of-day open-interest update, use a corrected file before its publication time, or reconstruct an expired universe from currently listed contracts. Define how stale a quote may be, which side of the market represents an executable fill, how spread and fees are modeled, and what happens when no valid quote exists. For broader implementation patterns, use the separate options data API for backtesting guide; for live-chain architecture, see the real-time options chain API guide.
回测只能使用模拟决策时点已经公开的信息。不能用日终更新的未平仓量生成早盘信号，也不能提前使用尚未发布的修订文件，更不能根据当前仍在挂牌的合约重建过去的合约池。还要事先规定报价允许过期多久、用买卖盘哪一侧模拟成交、如何计入价差和费用，以及没有有效报价时如何处理。更通用的实现方法可参考期权数据 API 回测指南；实时期权链架构则可查看实时期权链 API 指南。
Inspect an options-chain capability with QVeris用 QVeris 检查期权链能力
The exact QVeris Options Chain Tool describes a capability that returns calls and puts by expiration and strike with last price, bid and ask, volume, and open interest. That is a strong task match for current-chain inspection. Its public record does not, however, confirm every SPX symbol convention, historical entitlement, timestamp field, settlement attribute, or redistribution right.
QVeris 中的 Options Chain 工具明确提供按到期日和行权价组织的认购、认沽数据，包括最新成交价、买卖报价、成交量和未平仓量，因此与当前期权链查询高度相关。不过，它的公开记录并未确认所有 SPX 代码写法、历史权限、时间戳字段、结算属性或再分发权利。
Use a small probe before building the pipeline正式接入前先做小规模探测
Inspect the required symbol parameter and returned schema, then test one known SPX expiration in the QVeris Playground. Confirm that the symbol resolves to SPX rather than SPY, that calls and puts cover the expected strikes, and that quote times and null states are visible. Save the tool ID, parameters, response, retrieval time, and validation result together.
先检查工具要求的 symbol 参数和返回结构，再到 QVeris Playground 用一个已知的 SPX 到期日做小规模测试。重点确认代码是否解析为 SPX 而不是 SPY、认购与认沽是否覆盖预期行权价，以及响应中能否看到报价时间和空值状态。工具 ID、请求参数、原始响应、抓取时间和校验结论应一起保存。
Know when the capability is not enough明确这项能力的适用边界
A current-chain capability is not automatically a licensed historical SPX dataset. If the task requires tick replay, point-in-time surfaces, exchange-level condition codes, official settlement values, or audit-grade backtests, obtain a dataset and entitlement that explicitly covers those needs. QVeris can help discover, inspect, and call a capability; it does not replace exchange documentation, provider licensing, or your own acceptance tests.
能够查询当前期权链，并不等于拥有获授权的 SPX 历史数据库。如果任务需要逐笔回放、时点波动率曲面、交易所级状态码、官方结算值或可审计回测，就必须选择明确覆盖这些需求的数据产品与授权。QVeris 可以帮助发现、检查和调用能力，但不能替代交易所文档、服务商许可和实际验收测试。
FAQ常见问题
No. SPX is an index option on the S&P 500 Index, while SPY options are written on an exchange-traded fund. Contract exercise, settlement, symbol conventions, and price levels differ. Replacing one with the other changes the instrument and can invalidate a strategy test.
No. Quotes and trades can update intraday, while open interest is generally a daily value. Vendors may also delay some fields because of data entitlements. Verify the effective time and update rule for each field group.
Greeks depend on the selected option price, underlying level, interest rate, dividend or forward assumption, time convention, and model. Store those inputs and the calculation timestamp before comparing providers.
Possibly for evaluation or a low-volume internal workflow. Production use must also satisfy coverage, latency, uptime, request limits, historical depth, support, caching, display, and redistribution requirements. “Free access” does not by itself grant product-use rights.
不是。SPX 是以标普 500 指数为标的的指数期权，SPY 期权则对应一只交易所交易基金。两者的行权、结算、代码规则和价格水平都不同。用 SPY 替代 SPX，相当于改变了研究标的，可能让策略测试失效。
不是。报价和成交可以在盘中更新，未平仓量通常采用日度数据；受行情权限影响，部分字段还可能延迟。应分别确认每组字段的生效时间和更新规则。
希腊值会受到期权价格选择、标的指数点位、利率、股息或远期价格假设、时间规则和模型影响。比较不同服务商前，应先保存这些输入和计算时间。
它可能适合评估数据结构或低频内部流程，但生产使用还要满足覆盖范围、延迟、稳定性、请求配额、历史深度、技术支持、缓存、展示和再分发要求。“可以免费访问”并不自动等于拥有产品使用权。
References and next steps参考资料与下一步
Cboe SPX Options
Cboe DataShop documentation
Cboe DataShop FAQ