Calling the top in financial markets is never easy. Asian stock and bond markets may appear frothy at their near-record levels after a multi-year rally, but global investors are still betting on a mix of healthy returns and history to juice up their profits. Six years since the global financial crisis spurred a relentless pursuit of yields, Asian stock markets are at record highs, bond yields have tumbled to pre-crisis lows and companies are raising huge amounts of cheap equity and debt.