Was Crocodile stronger at Marineford? Or was he holding back in Alabasta?

 During the Alabasta arc, Crocodile displayed a level of power that was initially considered overwhelming by the Straw Hat Pirates. He possessed the Logia-type Devil Fruit called the Suna Suna no Mi (Sand-Sand Fruit), which granted him the ability to control and transform into sand. He had a reputation as a Shichibukai and controlled the desert kingdom of Alabasta from the shadows. His strength was showcased through his battles with Luffy and others. At Marineford, Crocodile was present as part of the war that took place at Marine Headquarters. While he did participate in the battle, he didn't display the same level of dominance as some other powerful characters present. This has led fans to speculate that he might not have been as strong as initially portrayed in Alabasta. It's important to note that power scaling and character abilities can be subject to interpretation and development by the author. Oda often keeps details deliberately open-ended to keep the story intriguing.

How does the stock market recover?

 The stock market can recover from a downturn in a number of ways. One way is through the actions of central banks and other governmental organizations, which may implement policies designed to stimulate economic growth and encourage investments in the stock market. Another way is through the natural workings of the market, as investors who believe that stocks are undervalued may choose to buy more, which can drive prices back up. Additionally, as companies within the market begin to report strong earnings and positive news, this can also help to boost investor confidence and lead to a recovery in stock prices.