The real money's in timing those assassination missions properly you'll want to hold off until finishing the main story since you'll have way more capital from heists to work with. When you're ready, watch the pre mission briefings closely for stock hints, like during the vice assassination where frt and fac are your targets. Good to know: save your game right before investing, then dump everything into the right stock and execute the hit.

Timing gets pretty technical here you're looking for that sweet 25 90% spike after each assassination, but you need to work the save system to push time forward. Keep saving and sleeping until you hit peak values, then coordinate your sells between characters for maximum gains. The bawsaq and lcn markets have different volatility patterns, so check both regularly.

For the corporate sabotage angle, you'll want to track rival companies carefully. Find their assets around the map, take them out strategically, then watch those stock fluctuations. Quick heads up when destroying competitor assets, make sure you're already invested in their rival's stock before starting any chaos. Monitor those volatile lcn stocks especially, since they can swing 5 10% pretty regularly if you time your moves right and keep advancing time through saves.