Oct 11, 2026 · 36 min
Higher rates turn overlooked cash into a portfolio battleground
Why Cash Is King in the Era of Higher Interest Rates
As interest rates reshape borrowing and investing, the money sitting in bank accounts now carries meaningful trade-offs around yield, liquidity, insurance, and stability.
- 1Higher rates create distinct trade-offs between individual bonds, bond funds, tax treatment, and liquidity across portfolios.
- 2Gary Zimmerman argues that cash deserves active portfolio management because many savers accept low yields and overlook FDIC coverage limits.
- 3Automation could reduce deposit inertia, but rapid AI-driven reallocations raise questions about trust, bank funding, and financial stability.
Don't miss
Gary Zimmerman reframes cash as an overlooked asset class and explains why uninsured deposits pose a more immediate concern than an AI-triggered bank run.
The brief
Telis Demos and Miriam Gottfried map how higher rates are moving through bonds, mortgages, commercial real estate, private equity, private credit, and bank deposits.
The hosts distinguish individual bonds from bond funds and ETFs, while noting that tax-aware investors may prefer holding interest-producing assets in tax-deferred accounts.
Gary Zimmerman, founder of MaxMyInterest, argues that cash is an asset class—but one often weakened by inflation, low-yield accounts, and the inertia of managing deposits.
Zimmerman explains why affluent households can leave large uninsured balances idle, while online and monoline banks often pay more because their operating costs are lower.
The conversation weighs whether automation and AI could move deposits faster, concluding that trust and funding structures limit an immediate bank run while uninsured deposits remain a serious risk.
The episode’s practical conclusion is broad: every investor should treat cash as part of the portfolio and review what checking and savings balances actually earn.
What was said on this episode
15 statements · 7 positive · 7 negative · 1 neutral
Deposit-cost increases and falling bond values contributed to Silicon Valley Bank’s failure.
“That mismatch, ultimately, you know, various things went into it. But that's basically what killed Silicon Valley Bank and a few other regional banks.”
Listen at 8:53
Greater customer attention to cash yields will raise banks’ deposit costs faster.
“However, there is a big concern that this awakening on cash. is going to cause deposit costs to rise faster than they have in the past.”
Listen at 9:25
Current mortgage and interest rates are historically average.
“Today, we're in a fairly average. historically average mortgage rate environment and interest rate environment. So I think rates are not high and they're not low. They're just kind of average right now.”
Listen at 12:34
Almost all U.S. bank-deposit cash is under-earning, underinsured, or both.
“almost all of that cash is under earning or underinsured or both”
Listen at 13:22
Cash generally fails to preserve purchasing power after inflation.
“At best, it will keep pace with inflation, maybe slightly outperform inflation. Most people are lagging inflation, which means they're losing real purchasing power. every single day.”
Listen at 13:54
Holding cash can help investors remain disciplined during market declines.
“And it actually can make you a better investor because if you think about it, most financial advisors will give you the advice, stay invested, right? Don't panic when the market dips.”
Listen at 14:27
Online banks’ lower operating costs enable them to pay higher deposit yields.
“And they're able to be a lot more efficient. And as a result, they're able to afford to pay a higher yield.”
Listen at 18:30
Deposits below $250,000 are equally safe across FDIC-insured banks.
“As long as you keep less than $250,000 in that bank, it is... Exactly as safe as the bank next door.”
Listen at 20:05
AI agents will not overcome trust barriers in cash management even if technically capable.
“Even today, and I played around with some of these agents to see if I could get it to manage cash. They are years away, I think, from being able to do anything. And even if they can, they still won't be able to overcome the trust issue.”
Listen at 31:05
AI agents are years away from independently managing cash effectively.
“They are years away, I think, from being able to do anything.”
Listen at 31:11
AI-driven deposit movement is not an existential risk to banks because marginal accounts provide limited funding.
“I don't think it is, in part because only a portion of a bank's funding comes from these marginal accounts.”
Listen at 32:17
Uninsured deposits are the biggest risk in banking.
“I think the biggest risk in banking is uninsured deposits.”
Listen at 32:24
Banking-system stability requires limiting deposits at each bank to the FDIC insurance limit.
“the key to stability of the banking system is to encourage people not to keep more than the FDIC insurance limit in any one bank.”
Listen at 32:40
Diversifying cash across banks can reduce personal risk and increase yield over time.
“if you diversify and spread your cash around much in the way that a squirrel is smart and buries its acorns under different trees, you can reduce risk for yourself. and earn significantly higher yield over time.”
Listen at 32:47
Managing $250,000 of cash differently could add $100,000 over ten years.
“a client with $250,000 in cash, they could earn an extra $100,000 in interest income over a 10-year period just by being a little smarter about how they manage cash.”
Listen at 33:01
Statements are attributed to the speaker as said on the episode and reflect their view at the time, not PodLume's. They are not advice.