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finnhubio / Finnhub-API

Finnhub API provides institutional-grade financial data to investors, fintech startups and investment firms. We support real-time stock price, global fundamentals and alternative data. https://finnhub.io/docs/api
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Inaccurate data - Earnings Calendar #528

Open msamara opened 7 months ago

msamara commented 7 months ago

Does anybody know where the Earnings Calendar data is coming from? We are evaluating whether we should subscribe to the premium services of Finnhub but find it difficult to rely on their data without knowing the erroneous data rate.

For example, the earnings date for the CAN stock is wrong on https://finnhub.io/api/v1/calendar/earnings?from=2022-03-01&to=2023-12-09&symbol=CAN&token=yourToken; the date shown is 14th of November, but the correct date is 28th of November.

It also seems there is no correction work done to this information when a more accurate date is published.

Any idea what Finnhub does to remedy this?

aleewen commented 2 months ago

(Disclaimer: I don't work for Finnhub or anything... just a quant)

Data providers rarely ever actually align fundamental data dates with the actual publishing date. For example, Bloomberg indexes fundamental data by the last date included in the report, not the published date. As a result, the fundamental dates will precede the actual publishing date. For example, if a company releases its quarterly earnings report on April 15, but the data in the report covers the period up to March 31, then Bloomberg will index this data under March 31.