Negative butterfly is a non-parallel shift in the yield curve where long and short-term yields fall more, or rise less, than intermediate rates.

The monarch butterfly, Danaus plexippus, is famous for its spectacular annual migration across North America, recent worldwide dispersal, and orange warning colouration. Despite decades of study ...

The Large Blue butterfly has a very strange lifestyle. When it hatches in July, its caterpillar feeds on thyme plants for three weeks and then drops to the ground to begin a more leisurely ...

Papilio is a picture book told in three parts about three stages of a butterfly's life (there are really four stages but egg time is pretty boring). It's also written and illustrated by three friends.

A new genus of butterfly, with dark, eye-like spots on its distinctive orange wings, has been named after Sauron, the arch-villain of J.R.R. Tolkien’s fantasy epic “The Lord of the Rings ...

A butterfly spread involves four options contracts at three strike or exercise prices and is commonly structured using calls or puts. The setup caps both risk and reward, making it ideal for low ...