You don't have to report PnL. If you do, please include shares traded. You may report trades only.
Format for trades: RIMM:+122.50,122.90-108.88 PCX:-133.90+150.88
You don't have to list all trades. Pick the best, the worst, the typical, the interesting, etc.
Use "-" for buy, "+" for sell. Use "," to separate potential multiple entry or exit prices. Use " " to separate trades. Improperly formatted trades will be rejected.