Denitsa Tsekova

(Bloomberg) -- The multitrillion-dollar boom in risky assets that's raged all year is engulfing more and more of Wall Street — and this time global policy makers are starting to lend their support.

Amateur investors are plunging into the complex world of derivatives-powered ETFs that can dangle huge payouts riding big-name stocks, among other goodies. Industry pros and regulators urge caution.

Amateur investors are plunging into the complex world of derivatives-powered ETFs that can dangle huge payouts riding big-name stocks, among other goodies. Industry pros and regulators urge caution.

Take a snapshot of markets right now, and it’s a picture of health. Stocks are at records, corporate bonds show no signs of worry and commodities remain buoyant on global economic optimism.

Forecasting the market is hard, some would say impossible. But that doesn’t keep Wall Street's best and brightest from diving in to the fray, year after year. Rarely have their predictive energies been on greater display than this week, when Goldman Sachs warned that annual S&P 500 returns may narrow to a paltry 3% over the next decade, only for JPMorgan Asset Management to say the view is too dour.

After a week when inflation fears revived, bond yields jumped and US presidential politics stewed, the biggest takeaway for risk-asset bulls may be how little any of it ended up bothering them.

A sell-off in Treasuries pushed US 10-year yields to the highest since July, revving up anxiety across Wall Street. Yet there was little evidence of panic.

The stock-market surge unleashed by Donald Trump 's presidential victory is triggering buy signals for rules-based investment funds, adding fuel to the rally.

All year, a slew of Wall Street pros have questioned the durability of an indiscriminate risk rally that has fattened stock prices by trillions of dollars, sent Bitcoin soaring, fueled a credit bonanza, and more.

All year, a slew of Wall Street pros have questioned the durability of an indiscriminate risk rally that has fattened stock prices by trillions of dollars, sent Bitcoin soaring, fueled a credit bonanza, and more.