ASX drops 0.4% in last session before break
Thin trade: volume about 40% of monthly avg
Banks snap 4-day winning run; sector looks fully priced
Miners hit record high; Rio peaks as copper tops $12k
Updates to close
By Shruti Agarwal
December 24 (Reuters) - Australian shares slipped on Wednesday as investors chose to book profits after a four-session rally, with thin holiday volumes and an early market close amplifying the move.
The S&P/ASX 200 index .AXJO fell 0.4% to 8,762.70 in the last trading day of the week, with the market closed for holidays on Thursday and Friday. The benchmark, however, has risen 1.7% so far this month.
Craig Sidney, a senior investment adviser at Shaw and Partners, attributed the weakness to the market's 2% advance in the last two days, compared with the S&P 500's around 1% gain.
The benchmark ran at roughly two-fifths of its monthly average volume, reflecting subdued activity typical of the holiday period.
Financials .AXFJ fell 0.4%, snapping a four-day winning run that had been underpinned by bets that a higher-for-longer interest rate outlook would help protect banks' lending margins. The sector had surged 2.9% in the previous four sessions.
After strong gains over the year, the sector appears to have little room left to run, according to Sidney, who noted banks look fully priced heading into 2026.
The 'big four' banks have added between 5.5% and 28.5% year-to-date, with top lender CBA's CBA.AX run being the weakest.
Healthcare stocks .AXHJ lost 1.6%, with CSL CSL.AX falling 2.4%. The sub-index's priciest stock has weighed on the sector throughout the year, down 37.6% so far.
Miners .AXMM were the only bright spot, rising 0.5% to hit a record high for a third consecutive session.
Behemoth Rio Tinto RIO.AX rose 0.8% to touch a new peak as copper crossed the $12,000 mark on a weaker dollar and expectations of tighter supply. MET/L
Gold stocks .AXGD tracked bullion's record-breaking rally to hit another high.
Meanwhile, consumer discretionary .AXDJ stocks and industrials .AXNJ fell 0.7% and 0.5%, respectively.
Across the Tasman Sea, New Zealand's benchmark S&P/NZX 50 index .NZ50 ended modestly higher at 13,529.06. The gauge has risen 0.3% so far this month after a fall in November.
(Reporting by Shruti Agarwal in Bengaluru; Editing by Subhranshu Sahu)
((Shruti.Agarwal@thomsonreuters.com))