Choose a Free Stock Data Feed
That Fits Your Build选择适合项目的
免费股票数据源
Compare REST APIs, CSV downloads, and WebSocket streams—then verify delay, coverage, limits, and licensing before you integrate.
比较 REST API、CSV 下载与 WebSocket 流，
并在接入前核对延迟、覆盖范围、限额与许可。
Quick Summary快速摘要
Free tiers commonly expose delayed quotes, daily OHLCV history, company profiles, and selected fundamentals.
Check exchange coverage, timestamps, adjustment rules, request limits, redistribution rights, and commercial-use terms.
Use REST for snapshots and history, WebSocket for continuous events, and bulk files for large backfills or reproducible archives.
A dependable feed needs sequence checks, reconnect logic, stale-data alerts, and a snapshot path to repair missed events.
免费套餐通常提供延迟行情、日线 OHLCV、公司资料以及部分基本面数据。
确认交易所覆盖、时间戳、复权规则、调用限额、再分发权限和商业使用条款。
快照和历史查询适合 REST，连续事件适合 WebSocket，大规模回补或可复现归档更适合批量文件。
可靠的数据源需要序号检查、断线重连、陈旧数据告警，以及用于修复漏失事件的快照通道。
Which free stock data feed do you actually need?你真正需要哪一种免费股票数据源？
Start with the decision or product you are building.
先明确你的决策或产品目标。
The phrase free stock market data covers several products that behave very differently. A quote endpoint may return only the latest traded price, while an end-of-day dataset can provide years of bars but no intraday updates. Fundamental feeds often follow company reporting cycles, and regulatory filings may arrive as documents rather than tidy rows. Define the market, asset class, frequency, history depth, and acceptable delay before comparing providers.
“免费股票市场数据”并不是单一产品。行情接口可能只返回最新成交价，日线数据集可以覆盖多年，却没有盘中更新；基本面数据通常跟随公司财报周期，监管申报则可能以文档而非整齐表格提供。因此在比较供应商之前，应先写清市场范围、资产类别、数据频率、历史深度以及可接受的延迟。
For research, price fields alone are rarely enough. You may also need trading calendars, symbol changes, delistings, currency, exchange identifiers, and corporate actions. These reference fields prevent survivorship bias and make it possible to join prices with fundamentals correctly.
对于研究任务，只有价格字段通常不够。你还可能需要交易日历、代码变更、退市记录、币种、交易所标识和公司行动。这些参考字段能减少幸存者偏差，也能让价格与基本面正确关联。
Last price, change, bid/ask, session status, and timestamp. Confirm whether values are real-time, delayed, indicative, or end-of-day.
Open, high, low, close, and volume by interval. For return calculations, verify splits, dividends, and adjusted-close methodology.
Events may arrive out of order, repeat after reconnect, or cover only one venue. Preserve event time, receive time, sequence, venue, and condition codes.
A stream tells you what changed; a snapshot tells you the current state. Use both when a disconnect can leave your order book or watchlist incomplete.
最新价、涨跌、买卖价、交易状态和时间戳。务必确认数据是实时、延迟、指示性还是收盘数据。
按周期提供开高低收和成交量。计算收益率前，要核对拆股、分红与复权收盘价的方法。
事件可能乱序到达、重连后重复，或只覆盖单一场所。应保留事件时间、接收时间、序号、场所与成交条件代码。
流式数据告诉你发生了什么变化，快照告诉你当前状态。断线可能造成订单簿或自选列表不完整时，两者需要配合使用。
How free stock data feed options compare免费股票数据源方案如何比较
No single source is best for every workflow. Exchanges and regulators are closest to primary records, but their files may require more cleaning.
没有一种来源适合所有工作流。
| Source来源 | What it offers提供内容 | Best for适合场景 | Watch for注意事项 |
|---|---|---|---|
| Exchange or regulator交易所或监管机构 | Authoritative listings, notices, and filings.权威的上市信息、公告与申报文件。 | Verification and primary-source research.核验与一手资料研究。 | May be fragmented or not API-friendly.可能分散，且不一定便于 API 调用。 |
| Free market-data API免费市场数据 API | Normalized quotes, history, and fundamentals.标准化的行情、历史与基本面。 | Apps, agents, prototypes, and repeatable research.应用、Agent、原型与可重复研究。 | Rate limits, delays, and license restrictions.有调用限额、延迟和授权限制。 |
| Broker data券商数据 | Account-linked quotes and trading context.与账户关联的行情和交易上下文。 | Personal portfolio and execution workflows.个人投资组合与交易执行流程。 | Access may require an eligible account.可能要求符合条件的账户。 |
| CSV or bulk datasetCSV 或批量数据集 | Portable files for analysis and archival.便于分析与归档的可移植文件。 | Spreadsheets, notebooks, and backtests.表格、Notebook 与回测。 | Often less current than a live API.通常不如实时 API 更新及时。 |
Compare sources with the same small test set rather than relying on feature lists. Request a liquid stock, a thinly traded security, a symbol that changed, and a date containing a split or dividend. Compare timestamps, missing records, precision, adjustment behavior, and error messages.
不要只看功能清单，最好用同一组小样本横向测试：选择一只高流动性股票、一只成交稀疏的证券、一个曾更换代码的标的，以及包含拆股或分红的日期。对比时间戳、缺失记录、数值精度、复权方式和错误信息。
Record requested and acknowledged symbols separately. After reconnect, resubscribe from a clean state and verify that every expected channel is active.
Compare event time and receive time against market-session expectations. A connected socket with no fresh events is not a healthy feed.
Use provider sequence IDs or a composite event key to tolerate duplicates. Do not let a replay inflate volume, counts, or derived bars.
On a sequence gap, pause downstream state updates, fetch a current snapshot or bounded REST window, then resume from a known point.
分别记录已请求和已确认的股票代码。重连后从干净状态重新订阅，并确认每个预期频道都已恢复。
结合交易时段预期，比较事件时间和接收时间。连接仍然在线却长期没有新事件，并不代表数据源健康。
利用供应商序号或复合事件键容忍重复消息，避免重放导致成交量、事件数或聚合 K 线被重复累计。
发现序号缺口时，先暂停更新下游状态，获取当前快照或有限时间窗口的 REST 数据，再从明确位置继续处理。
Use QVeris to find stock data capabilities使用 QVeris 查找股票数据接口
There is no single verified QVeris result that represents every stock data feed. Use the QVeris documentation to understand callable capabilities and the Playground to inspect candidates before committing to a transport and provider.
目前没有一个经过核实的 QVeris 结果，可以代表所有股票数据源。可以先阅读 QVeris 文档了解可调用能力，再到 Playground 检查候选项，之后再确定传输方式和供应商。
FAQ常见问题
Start with exchanges and regulators for primary records, then compare free API or broker tiers for normalized quotes, history, and fundamentals.
Sometimes, but often it is delayed or limited to specific venues. Always read the timestamp, entitlement, and exchange-coverage notes.
Poll REST when occasional snapshots are enough. Use WebSocket when event latency matters and you can operate reconnect, ordering, and recovery logic.
Set thresholds by session and symbol, compare source and receive timestamps, monitor heartbeats, and verify silence against a snapshot endpoint.
先从交易所和监管机构核对一手记录，再比较免费 API 或券商套餐提供的标准化行情、历史和基本面。
有时是，但很多数据存在延迟或仅覆盖部分市场。务必检查时间戳、授权与交易所覆盖说明。
只需偶尔获取快照时用 REST；对事件延迟敏感，并且能处理重连、排序和恢复逻辑时，再选择 WebSocket。
按交易时段和股票设置阈值，比较来源时间与接收时间，监控心跳，并通过快照接口核实长时间无事件是否正常。
References and next steps参考资料与下一步
Alpaca Market Data
Finnhub API documentation
Twelve Data API documentation
QVeris documentation
QVeris Playground
Alpaca 市场数据
Finnhub API 文档
Twelve Data API 文档
QVeris 文档
QVeris Playground