[MARKET UPDATE] ASX 200 opens -0.5% following losses from Wall Street and with Westpac in the red post-earnings; Japan and South Korean markets are closed amid domestic holidays; newsflow and liquidity thin

The ASX 200's 0.5% drop indicates a negative sentiment spillover from Wall Street, particularly influenced by Westpac's disappointing post-earnings performance. With Japan and South Korea closed for holidays, liquidity is likely to remain thin, suggesting that any market moves may be exacerbated, reflecting a cautious trading environment ahead of the upcoming sessions.