Flexible Exchange Option (FLEX)
An option, generally written by a clearing house, whose expiration date, strike price, and exercising style can be modified.

Investopedia Says:
A flex option provides flexibility as it can be tailored to meet an investor's specific needs.

Related Terms:
American Option
Call
European Option
Option
Put

• Outperformance Option
• Output Gap
• Outright Futures Position
• Outright Option
• Outside Director
• Outside Earnings
• Outside Reversal
• Outsourcing
• Outstanding Shares
• Out Trade
• Outward Arbitrage
• Overadvance
• Overallotment
• Overbought
• Overcapitalization
• Overcast
• Overcontribution
• Overdraft
• Overhang
• Overhead
• Overheated Economy
• Over-Hedging
• Overlapping Debt
• Overlay
• Overnight Delivery Risk