Accumulator
A structured contract to buy an asset at a discount at regular intervals — as long as it stays above a barrier. If it falls, you must keep buying at the now-high price, often in double size: the reason it's nicknamed 'I-kill-you-later'.
Where this is taught
Definitions are the trailer. These free levels turn Accumulator into something you play — one bite-size lesson, with worked examples, a quiz and XP.