Based on the latest data, Walmart's net income for the fiscal year ending in 2023 Q4, is $5.81 billion. In contrast, Amazon's net income for the fiscal year ending in 2023 Q3, is $3.17 billion. Therefore, Walmart's net income is currently higher than Amazon's. However, it is essential to note that this is only one year's worth of data, and a more extended analysis is necessary to determine a more comprehensive trend.