Today: total unrealized gain (green) or loss (red) on all positions in the account since the open of the current trading session

Realized: any realized gains for positions closed

Long:

• First amount: total market value of all long positions in the account
• Second amount (red/green): total unrealized gain or loss on all long positions in the account

Shrt:

• First amount: total market value of all short positions in the account
• Second amount (red/green): total unrealized gain or loss on all short positions in the account

Cash: total cash value in the account (value not invested in positions)

Acct Value: total net value of cash and positions in the account

Simulated Buying Power: amount of buying power left  in the account to enter positions (Practice Acct)

Today: total unrealized gain (green) or loss (red) on all positions in the account since the open of the current trading session

Realized: any realized gains for positions closed

Long:

• First amount: total market value of all long positions in the account
• Second amount (red/green): total unrealized gain or loss on all long positions in the account

Shrt:

• First amount: total market value of all short positions in the account
• Second amount (red/green): total unrealized gain or loss on all short positions in the account

Cash: total cash value in the account (value not invested in positions)

Acct Value: total net value of cash and positions in the account

For Margin Accounts:

• PDT (Pattern Day Trader). (Making more than 4 trades in a rolling 5-day period qualifies one as a Pattern Day Trader and requires a minimum of $25,000 in the account.)
• ExLiq (Excess Liquidity): the difference between Current Equity with Loan Value and Current Maintenance Margin.  Excess Liquidity is often referred to as a trader's "cushion".
• SMA (Special Memorandum Account): a line of credit created when the market value of securities in the account increase in value. Its purpose is to preserve the buying power these unrealized gains provide towards future purchases. (SMA can never be below zero overnight. Positions will be automatically liquidated to bring the account back into margin compliance at 3:50 p.m. of each trading day).

Buying Power: amount of buying power left  in the account to enter positions