Your trading account should issue a 1099-B, and possibly a 1009-INT or 1099-DIV. You can likely download the statement inside TurboTax in the investment income section, or download the statement from your account and type in the details manually.
Withdrawals are not necessarily taxable, but your trading activity may have created taxable capital gains or deductible capital losses, and all that information will be on the tax statement from the broker.
