NaN on the last Close for some tickers if using Tickers function with more than one ticker

[MarcoOvidi]

Describe bug

If I call
tk = yfinance.Tickers('1ABBV.MI').history(start=start_date, end=end_date) the last Close for 1AABV.MI is always filled

If I Call
tk = yfinance.Tickers('1ABBV.MI 1AAPL.MI').history(start=start_date, end=end_date) I always get the last close as NaN for 1AABV.MI

if I try to swap '1AAPL.MI 1ABBV.MI ' is the same NaN Close for 1AABV.MI

At the end 1AABV.MI (and some others) have this strange behavior if called tighter with other Tickers.

Simple code that reproduces your problem

Works:
tk = yfinance.Tickers('1ABBV.MI').history(start=start_date, end=end_date)

Not Works:
tk = yfinance.Tickers('1ABBV.MI 1AAPL.MI').history(start=start_date, end=end_date)

Debug log

DEBUG Entering download()
DEBUG Disabling multithreading because DEBUG logging enabled
DEBUG Entering history()
DEBUG Entering history()
DEBUG 1AAPL.MI: Yahoo GET parameters: {'period1': '2016-09-26 00:00:00+02:00', 'period2': '2024-12-14 00:00:00+01:00', 'interval': '1d', 'includePrePost': False, 'events': 'div,splits,capitalGains'}
DEBUG Entering get()
DEBUG Entering _make_request()
DEBUG url=https://query2.finance.yahoo.com/v8/finance/chart/1AAPL.MI
DEBUG params={'period1': 1474840800, 'period2': 1734130800, 'interval': '1d', 'includePrePost': False, 'events': 'div,splits,capitalGains'}
DEBUG Entering _get_cookie_and_crumb()
DEBUG cookie_mode = 'basic'
DEBUG Entering _get_cookie_and_crumb_basic()
DEBUG loaded persistent cookie
DEBUG reusing cookie
DEBUG crumb = 'L4bxwRUg0Qo'
DEBUG Exiting _get_cookie_and_crumb_basic()
DEBUG Exiting _get_cookie_and_crumb()
DEBUG response code=200
DEBUG Exiting _make_request()
DEBUG Exiting get()
DEBUG 1AAPL.MI: yfinance received OHLC data: 2017-10-26 07:00:00 -> 2024-12-13 14:59:05
DEBUG 1AAPL.MI: OHLC after cleaning: 2017-10-26 09:00:00+02:00 -> 2024-12-13 15:59:05+01:00
DEBUG 1AAPL.MI: OHLC after combining events: 2017-10-26 00:00:00+02:00 -> 2024-12-13 00:00:00+01:00
DEBUG 1AAPL.MI: yfinance returning OHLC: 2017-10-26 00:00:00+02:00 -> 2024-12-13 00:00:00+01:00
DEBUG Exiting history()
DEBUG Exiting history()
DEBUG Entering history()
DEBUG Entering history()
DEBUG 1ABBV.MI: Yahoo GET parameters: {'period1': '2016-09-26 00:00:00+02:00', 'period2': '2024-12-14 00:00:00+01:00', 'interval': '1d', 'includePrePost': False, 'events': 'div,splits,capitalGains'}
DEBUG Entering get()
DEBUG Entering _make_request()
DEBUG url=https://query2.finance.yahoo.com/v8/finance/chart/1ABBV.MI
DEBUG params={'period1': 1474840800, 'period2': 1734130800, 'interval': '1d', 'includePrePost': False, 'events': 'div,splits,capitalGains'}
DEBUG Entering _get_cookie_and_crumb()
DEBUG cookie_mode = 'basic'
DEBUG Entering _get_cookie_and_crumb_basic()
DEBUG reusing cookie
DEBUG reusing crumb
DEBUG Exiting _get_cookie_and_crumb_basic()
DEBUG Exiting _get_cookie_and_crumb()
DEBUG response code=200
DEBUG Exiting _make_request()
DEBUG Exiting get()
DEBUG 1ABBV.MI: yfinance received OHLC data: 2023-11-24 08:00:00 -> 2024-12-12 08:00:00
DEBUG 1ABBV.MI: OHLC after cleaning: 2023-11-24 09:00:00+01:00 -> 2024-12-12 09:00:00+01:00
DEBUG 1ABBV.MI: OHLC after combining events: 2023-11-24 00:00:00+01:00 -> 2024-12-12 00:00:00+01:00
DEBUG 1ABBV.MI: yfinance returning OHLC: 2023-11-24 00:00:00+01:00 -> 2024-12-12 00:00:00+01:00
DEBUG Exiting history()
DEBUG Exiting history()
DEBUG Exiting download()

Bad data proof

No response

yfinance version

yfinance==0.2.50

Python version

python 3.13.0

Operating system

Mac OS

[ValueRaider]

Yahoo returning different end dates:

DEBUG 1AAPL.MI: yfinance received OHLC data: 2017-10-26 07:00:00 -> 2024-12-13 14:59:05
DEBUG 1ABBV.MI: yfinance received OHLC data: 2023-11-24 08:00:00 -> 2024-12-12 08:00:00

I can't reproduce bug.

[MarcoOvidi]

Ciao @ValueRaider what you mean ?