Everything covered so far in this module has focused on options as a speculative or income-generating tool for individual traders — but that's only half of what derivatives are actually used for in the real world. The other major use case is hedging: using a derivative to offset or reduce a risk that already exists, rather than to take on a new one. The distinction matters enormously, because the exact same instrument — a call option, a put option, a futures contract — can serve either purpose. What determines which one it is isn't the tool itself, but whether it's reducing existing exposure or creating brand-new exposure that wasn't there before.
Airlines are a classic real-world example: fuel is one of their largest and most volatile operating costs, so many airlines use oil futures or options to lock in or cap future fuel prices, reducing uncertainty about a cost they can't avoid but also can't fully control. Multinational companies with significant foreign revenue or costs commonly use currency forwards or options to lock in a future exchange rate, protecting against adverse currency swings on cash flows they're already expecting to receive or pay.
Correct moves you up, wrong moves you down — reach 100 to master this lesson.