Gillian Tan is a Bloomberg Gadfly columnist covering deals and private equity. She previously was a reporter for the Wall Street Journal. She is a qualified chartered accountant.

Good morning! This is Fly Charts, the daily charts-only newsletter from Gadfly; sign up here. From Qualcomm's game of chicken to a deep dive into U.S. power pricing, here are four charts that tell you what you need to know in business today.

Profit Is Relative
The grocery business is notorious for razor-thin profit margins, but that won't faze Amazon as it cuts some prices at Whole Foods.
Source: Bloomberg
Losing Momentum
Qualcomm needs 80 percent of NXP holders to tender their shares. Simply kicking the can down the road isn't going to win them over.
Source: Company filings
Hoarding Credit
Big U.S. companies have substantially boosted their corporate-debt holdings in recent years, meaning any incremental unwinding of their balance sheets could become a significant risk.
Source: Bank of America Merrill Lynch researchers, filings
Manifold Destiny
Despite the closings of coal-fired plants, the mix of U.S. power from different sources is more diverse than ever. It should be priced accordingly.
Source: Energy Information Administration, Bloomberg Gadfly analysis
Note: Concentration of U.S. electricity generation among coal, petroleum, natural gas, nuclear, hydro, biomass, geothermal, solar and wind sources. A score above 2,500 indicates a high degree of concentration.

And don't miss Shira Ovide's plea to Apple Inc. to make its next product launch a little less predictable: "Since the beginning of 2016, Apple has hosted five staged product events with a combined run time of nearly nine hours. And the form and style feels so familiar and rote that it's ripe for parody. My personal favorites: the '30 Rock' episode complete with pitch-perfect Jobs-style visuals from Tina Fey in a black turtleneck; and Vice's video compilation of tech executives demonstrating completely relatable human activities they do with their gadgets."

This column does not necessarily reflect the opinion of Bloomberg LP and its owners.

To contact the author of this story:
Gillian Tan in New York at gtan129@bloomberg.net

To contact the editor responsible for this story:
Daniel Niemi at dniemi1@bloomberg.net