The concentration of corporate debt

Data: Wells Fargo Investment Institute; Chart: Andrew Witherspoon/Axios

Non-financial S&P 500 companies with the least cash are piling on the biggest loads of debt.

By the numbers: More than half of the S&P 500's total cash is held within just 25 companies — or the top 5% — while the bottom 95% of companies hold 73% of the index's debt, according to the Wells Fargo Investment Institute.

Kaiser's medical school rolls out free tuition for first 5 classes

Data: Association of American Medical Colleges; Chart: Naema Ahmed/Axios

Kaiser Permanente's new School of Medicine will cover all tuition and health insurance costs for each student in its first 5 graduating classes.

The big picture: More than a quarter of medical school students graduated with no debt in 2017, up from 15% in 2010. The number of debt-free doctors — one of the highest-paying professions — could rise further if other institutions follow the lead set by Kaiser and NYU's medical school.

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