I’m a former manager in the market and this is usually how ICs are selected. It’s mainly based on bonus and performance review on Workday. Top performers with a 120% bonus or above are generally safe, while those below 80% are usually in trouble.
Most ICs fall around the 100% bonus range, and that’s where the ranking list plays a big role. For managers, it’s a different story, they tend to look at who has lower OPEX, and age becomes a bigger factor for both ICs and managers.