A fresh retail-trading frenzy is reshaping financial markets

Investors love an acronym. In recent months they have embraced the TACO (Trump Always Chickens Out) trade. They once swooned over the FAANG stocks (Facebook, Apple, Amazon, Netflix and Google). During Europe’s sovereign-debt crisis of the 2010s traders fretted over the PIIGS (Portugal, Italy, Ireland, Greece and Spain). A good memory for initials takes a financial historian a long way.

Explore more