At 3:40pm, a trader did the following butterfly;
- Bought 2025 contracts of March $580 calls
- Sold 4050 contracts of March 590 calls
- Bought 2025 contracts of March $600 calls
The spread was done for net debit of $2.20. The trader stands to make nearly 350% profit by next Friday if the market gets to pin Google at $590.

Playing pin action is no different than betting on a specific number at a roulette table. Keep position size small. Where I normally recommend no more than 5% in each option trade, betting on pin action deserves no more than 2-3%.
Good luck!