delta hedging does

Anchoring effect

Anchoring bias skews sell decisions based on initial purchase price

Beta (finance)

Beta measures a stock's volatility relative to the market

Graham's net-net strategy is

Graham's net-net strategy: Buy stocks trading below net current asset value

Greeks (finance)

Greeks measure sensitivity of option prices to underlying parameters

Straddle

Straddle strategy profits from large price movements in either direction

dollar-cost averaging achieves

Dollar-cost averaging smooths out volatility by investing fixed amounts regularly