- Laffer Curve
- Lakh
- Lambda
- Land Health
- Large Cap
- Large Trader
- Large Trader ID Number
- Last In First Out (LIFO)
- Last Notice Day
- Last Trading Day (Options)
- Layout Locked Button
- Lease Rental Bonds
- Least Squares Moving Average
- LedgerX
- Leg
- Legging In/Out
- Lend
- Level of Detail
- Leverage
- Leveraged Buyout
- Leveraged Recapitalization
- LGBTQ Inclusion
- LIBOR
- Life of Contract
- LIFFE
- Lightpool
- Limit + Market Order
- Limit if Touched Order
- Limit Order
- Limit-on-Close Order
- Limit-on-Open Order
- Limited Liability Corporation
- Limited Partnership
- Linear Regression Curve
- Linear Regression Indicator
- Linear Regression Intercept
- Linear Regression R-Squared
- Linear Regression Slope
- Link to a New Account
- Link to an Advisor- or Broker-Managed Account
- Link to an Existing Account
- Linked Accounts
- Liquid Net Worth
- Liquidate (Option)
- Liquidate Last
- Liquidity
- Liquidity (Volume)
- Liquidity Risk
- Litecoin
- Live Time
- Loan Recall
- Lock-Up Agreement
- Locked Market
- London Gold Market
- Long (Long Position)
- Long Call
- Long Put
- Long Strangle (Long Combination)
- Long the Basis
- Long-Term CDs
- Long-Term Equity Anticipation Securities (LEAPS)
- Look Ahead Available Funds
- Look Ahead Excess Liquidity
- Look Ahead Next Change
- Loonie
- Low Cash Buffer
- Low Dividend Yield (Reuters)
- Low Growth Rate (Reuters)
- Low Opt Volume P/C Ratio
- Low Option Imp Vol Over Historical
- Low Option Open Interest P/C Ratio
- Low P/E Ratio (Reuters)
- Low Price/Book Ratio (Reuters)
- Low Quick Ratio (Reuters)
- Low Returns on Equity (Reuters)
- Low Synth Bid Rev Yield
- Lowest Option Imp Vol
- LT Debt/Equity
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