Weekly options are options that expire every Friday, instead of the standard monthly third Friday. They've only existed since 2010.
Time Decay: Extreme on weekly options. You're bleeding theta every single day.
Price Movement: Weeklies can swing wildly on small stock moves because time decay is so rapid.
Volatility: Weekly IV is often higher than monthly IV for the same strike.
Leverage: Weeklies are more leveraged because small time and price moves matter.
Sellers Love Them: Time decay eats away value fast. Sell premium and watch it disappear.
Buyers Beware: You need the stock to move significantly this week or you lose money to theta. Most weekly buyers lose money.
Daytraders Use Them: Enter and exit same day, avoid overnight theta bleed.
Related: Monthly Options, Theta Decay, Expiration Date