There are plenty of diversions in Grand Theft Auto V‘s Los Santos, from playing golf to surfing the internet. But, as New York magazine reports, one that has really grabbed players’ attentions is the in-game stock market. The feature lets players buy and sell stock on two different exchanges — Liberty City National and BAWSAQ — in order to earn extra in-game cash. Stock prices are often influenced by events of the missions you take on, and sometimes you’ll even get a tip on whether a company will see a sudden rise or fall. Over at the GTA Market subreddit, some users have been speculating that the BAWSAQ is dynamic, and can be manipulated by players if they work together.