Release v0.8.6 - Adj Close column (yfinance-style) · saidsurucu/borsapy

New Features

Adjusted Close column (closes #12): Ticker.history() now accepts auto_adjust=True to include a yfinance-style Adj Close column. The column is computed by backward-applying each ex-dividend's (close - amount) / close factor to all prior closes, on top of the existing split adjustment. The result is a total-return price series — what you'd have if every dividend were reinvested on its ex-date.

import borsapy as bp
stock = bp.Ticker('THYAO')
df = stock.history(period='5y', auto_adjust=True)
df[['Close', 'Adj Close']].tail()

`auto_adjust`	`Close`	`Adj Close`
`False` (default)	split-adjusted (unchanged)	not present
`True`	split-adjusted (unchanged)	split + dividend adjusted

Default behaviour is unchanged — back-compat preserved.

borsapy/ticker.py: new pure _compute_adj_close() helper + wiring in Ticker.history()
10 new unit tests in tests/test_ticker.py covering empty frames, missing Amount column, zero/negative amounts, out-of-range dividends, multiple compounding ex-dates, tz-aware/naive index mismatches, and zero-close guards