Even in the rapidly expanding AI space, high-flying stocks eventually need to prove their business isn't all sizzle and no steak. Unfortunately, BigBear.ai doesn't pass the test.

Taiwan Semiconductor, or TSMC, is a foundry, which means it makes the chips that companies like Nvidia, Apple, and Advanced Micro Devices design. It's benefiting from tremendous tailwinds in AI, but since it works with so many clients in many different industries, its risk is well diversified. That gives it the best of both worlds.