Contagion from East Asia imposed a severe 'stress test' on the market-orien
ted reforms of transition economies. We find that the portfolio reallocatio
ns of investors differentiated sharply among these economies at the height
of the East Asian turmoil, appearing clearly in the relative movements in i
nterest rates and share prices. Those countries that appeared more vulnerab
le to contagion had large public or private sector imbalances and low reser
ve cover of short-term debt. The analysis, however, goes beyond macroeconom
ic and financial imbalances to link these weak fundamentals to inadequate s
tructural and institutional reforms. We find that flaws in public finances
together with weak enterprises and financial institutions were key underlyi
ng factors in the vulnerability to East Asian contagion. They were also key
causes of the Russian crisis, which initiated a new round of contagion dri
ven primarily by high exposures to Russian trade.