| Tweets with Phrase | Mean Absolute Error of Predicting Closing Stock Price Difference with Boosted Tree | Mean Absolute Error of Predicting Closing Stock Price Difference with MLP regression |
| “stock market” | 88.39 | 68.19 |
| “stocktwits” | 76.98 | 75.28 |
| “AAPL” | 1.37 | 0.98 |