Missing Data #2939

Describe bug

Data is missing for some symbols from XETRA on 7-31. Please add a method to check Stock Exchange Trading Days.

Simple code that reproduces your problem

import yfinance as yf

# Define the ticker symbol
ticker_symbol = "SDF.DE"
print(ticker_symbol)

# Create a Ticker object
ticker = yf.Ticker(ticker_symbol)

# Fetch historical market data
historical_data = ticker.history(period="1y")  # data for the last year
print("Historical Data:")
print(historical_data)

Debug log with debug logging enabled

2026-07-29 00:00:00+02:00 14.700000 14.940000 14.580000 14.720000 1030428 0.0 0.0
2026-07-30 00:00:00+02:00 14.680000 14.860000 14.600000 14.680000 559140 0.0 0.0
2026-08-03 00:00:00+02:00 14.450000 14.570000 14.330000 14.420000 748552 0.0 0.0

Bad data proof

assert 7-31 is a trading day

yfinance version

1.5.0

Python version

No response

Operating system

No response