There’s no shortage of hot topics for investors to debate at the start of summer.
I heard and saw a little bit of everything this week in the markets!
First, AI stock concentration has reached the same level that resulted in the bursting of previous bubbles, Bank of America strategists pointed out.
The “AI Big 10” now make up 41% of the S&P 500 (^GSPC), similar to the share of tech and telecom during the dot-com bubble.
The 10 companies making up BofA’s AI Big 10 are Nvidia (NVDA), Microsoft (MSFT), Alphabet (GOOG, GOOGL), Amazon (AMZN), Meta (META), Apple (AAPL), Tesla (TSLA), Broadcom (AVGO), Micron (MU), and Advanced Micro Devices (AMD).
Then, I think the June jobs report (and that clunker of an earnings report from Nike (NKE)) only reinforced the view that we are in a K-shaped economy.
The K-shaped economy describes an economic period where different segments of society experience starkly divergent paths. The upward path represents wealthy white-collar workers and asset owners who thrive as the stock and housing markets grow.
The downward path reflects low-wage workers, manual laborers, and small businesses who face prolonged financial stagnation, job losses, and declining living standards.
I also didn’t like the negative action in 2026 AI darlings Micron and Sandisk (SNDK).
Here are a few hot takes on several of these topics from my morning show, Opening Bid. Think on these for the rest of the July Fourth holiday weekend.
K-shaped economy: Jim Bianco, Bianco Research president
“I do see the K-shaped economy continuing because a lot of what’s driving the top end is asset price gains. It’s not just stocks, it’s also real estate and other types of assets as well too … So as long as assets keep going up, this is an economy of do you own assets or don’t you own assets? Do you own a home or do you rent? If you own a home and you have a portfolio, you’re doing OK. If you rent and you’re paycheck to paycheck, it’s a different story.”
AI bubble bursting: Kenny Polcari, chief market strategist, Slatestone Wealth
“This story is not the dot-com story. This AI zone that we’re in is not what it was in late 1999, early 2000, when anyone would put a dot-com at the end of their name and suddenly had crazy valuations … So while I’m a little bit concerned that valuations are stretched and I think in some names they are, I’m not in the camp that I think that this is a bubble that’s going to burst the same way it did in 1999 and 2000, because these are real companies with real products.”
