As you purchase more and more Investments, you'll reach certain unlock stages that upgrades your investments; one time it could be a multiplier, the next time a speed boost. Your unlock completion bar is right under your investment icon, so keep an eye on that as you manage your wealth. Investment unlocks are a key factor in your capitalist success!
Want a little incentive? Unlocks will not only boost your Investments, but provide opportunities to earn Gold and spins on the Slot Machine! Look for the Gold Bar and $ Icons beside specific Unlocks and go for the goods!