One of the market’s higher flying stocks this past month took quite the tumble last week. Fastly (FSLY), a cloud, web development company, dropped nearly 30% in one day after lowering revenue guidance ahead of its earnings at the end of the month. Although the actual guidance wasn’t that much lower than previous expectations, the company was supposed to be in strong-growth mode, so this was an eye opener to investors. However, at least one trader sold nearly $5 million worth of puts in December, suggesting there’s a floor to how far the share price will fall.