Is Vega Positive or Negative for a Long Option Position?

Vega is positive for a long option position (buying a call or put). A positive Vega means that if implied volatility increases, the option's premium will also increase, which benefits the buyer.

Option buyers are long volatility.

What Is ‘Negative Slippage’ and How Does It Differ from ‘Positive Slippage’?
Does a Delta-Neutral Position Have a Positive or Negative Theta?
Can an Option’s Vega Ever Be Negative for a Long Position?
Is Vega Positive for Both Call and Put Options?
In a Synthetic Long Stock Position Created with Options, What Is the Net Vega?
Why Is ‘Vega’ Positive for All Long Option Positions?
Why Is a Short Straddle Considered a Negative Vega and Positive Theta Position?
Is Theta Generally Positive or Negative for a Long Option Position?

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