Who Pays Your Agent?

Your salary lands in a current account that pays you almost nothing to hold it. It stays there because moving it has never seemed worth an afternoon. On Sunday, Torsten Slok, chief economist at Apollo Global Management, asked what happens when software decides the afternoon is worth it. His note ran to two sentences and a chart. He wrote that agents like Meta's Muse could soon sweep household cash out of US checking accounts paying a national average of 0.1%. The cash would go to accounts paying 3.3% to 5%. If every household did it, banks would lose a large share of the cheap deposits they lend from. slok-agentic-bank-run

By Monday, Bloomberg and CNBC were calling it an agentic bank run. bloomberg-agentic-bank-run cnbc-agentic-bank-run Slok is right that agents will move the money, and he may be right that a bank could be drained this way. But the run is the loud risk, and everyone is now braced for it. The quiet one is the toll. Once software chooses where idle cash sleeps, the margin a bank used to earn from your inertia goes to whoever owns that choice. And a bank on either end can pay for that choice: one to win your money, the other to keep it.

Who Needs It to Be a Run?

Banks can pay you almost nothing because you rarely leave. Economists call the value of that habit the deposit franchise, and Itamar Drechsler, Alexi Savov and Philipp Schnabl showed in 2017 that it rests on market power. It is also what makes deposits such stable funding for loans. drechsler-deposits-channel Silicon Valley Bank showed in 2023 how quickly that stability can go. Depositors pulled more than $40 billion on 9 March, and management expected $100 billion more the next day. fed-svb-review Run is the word that regulators, bankers and headline writers already have instruments and pictures for.

It also suits more than one reader. Headlines get a picture everyone recognises, and private lenders get a story about fragile banks. Apollo manages $849 billion in credit. apollo-10q-2026 Its chief executive, Marc Rowan, told a banking conference last week that private credit is being shaped by bank retreat and by direct lenders taking share. apollo-bofa-conference I am not claiming Slok chose the word for that reason. A word that suits so many people will travel further than the evidence under it.

Why Slok Could Be Right

Start with the case for him. In FCA trials with 124,000 UK savers, switching stayed rare even though it took about fifteen minutes and was worth roughly $190 a year. adams-jfe-savings In the same programme, a pre-filled form lifted switching from 3% to 12%. fca-paper-19 An agent is that pre-filled form, completed for everyone at once. Where the money sits makes it worse for banks. A study of more than 10 million US accounts, mostly at credit unions, found that about 10% of accounts hold 70% of the dollars. Those balances barely respond to rates. sticky-deposits The authors think the owners are not paying attention, because the money is waiting for a house or a tuition bill. Inattention is the one thing an agent removes.

McKinsey sized the damage in August 2025. If 10% to 20% of European consumers let agents sweep their cash, bank net interest margins could tighten by 30 to 50 basis points. mckinsey-end-of-inertia That is a margin number, not a run number. It measures the spread that is up for grabs. The Bank of England has warned that AI-driven strategies could push firms into correlated positions, acting alike under stress. boe-ai-stability And Todd Phillips of Georgia State University argues that a run started by agents chasing yield would not need a weak bank at all. phillips-deposit-broker On that point I concede: an agent-driven run on a single healthy bank is possible.

Rails Are Not a Decision

Britain ordered its nine largest current-account banks in 2021 to support automatic sweeping into higher-interest accounts. open-banking-sweeping By mid-2024, £252 billion still sat in bank and building society accounts paying no interest. fca-cash-savings-2024 Much of that is everyday money people need to hand, so it proves less than it seems. It does prove the narrower point. Rails move nothing until someone acts on them.

Nor is "the money stays insured" an answer to Slok. What left Silicon Valley Bank did not vanish; it went somewhere else, and it still broke a bank. The question that decides both the run and the toll is who picks the destination. That choice settles which banks are drained, which are fed, and what the saver earns in between.

The First Automated Sweep Went the Wrong Way

America has already run this experiment with brokerage accounts. Wells Fargo and Merrill Lynch swept uninvested client cash automatically into bank deposit programmes, and for most advisory clients that was the only sweep on offer. The SEC found the firms took a significant financial benefit, and in January 2025 they paid $60 million to settle. sec-wells-merrill The swept cash earned as much as four percentage points less than reasonable alternatives, from 2019 to May 2024 at Wells. advisorhub-sweeps Nobody in that story was lazy. The default did it.

Meta owns no bank, which is the obvious difference. It does not need one, only to be paid by one. Savings rankings are already for sale. The Yahoo Finance guide to Muse's money features carries the line "Some offers on this page are from advertisers who pay us." yahoo-muse-money Nothing Meta has described has Muse sweeping savings yet, and it asks for approval before it spends. yahoo-muse-money But Mark Zuckerberg told developers last week that Muse will stay free for a large allowance of use. Meta expects to take a small fee from the transactions it completes instead. yahoo-zuckerberg-muse-fee That fee, TheStreet reported, comes from the merchant. thestreet-muse-fee If an agent ever shops for a home for your savings, the merchant is a bank. As I argued in You Are Not the User, find who pays the intermediary and you find who it serves.

Whoever Draws the Default Is Paid First

The cost of a layer you did not choose is already on record. When Synapse, the middleware firm between fintech apps and their banks, went bankrupt in April 2024, more than 100,000 people lost access to about $265 million. banking-dive-synapse The Consumer Financial Protection Bureau later put the gap between the apps' records and the banks' holdings at $60 million to $90 million. cfpb-synapse Jared Fread had $62,460.79 frozen in a Juno savings account and told a reporter he was living out of his vehicle. Dimitri Souffan had $15,728 in Yotta. "I thought that FDIC meant something," he said. reynolds-synapse Deposit insurance covers a bank that fails. It never covered a ledger kept by the company in between. None of these people ran. They opened an app, found the balance frozen, and learned the name of a company they had never chosen.

The Bump and the Lift

The train brakes hard at rush hour and a stranger's shoulder drives into yours. Your whole body answers the shove. You brace, you turn, you find your footing, and you can still feel the push in your ribs a minute later.

What you do not feel, in that same second, is two fingers lifting the wallet from the coat pocket on your other side. The body spends its attention on the loudest touch. A run is the shove, and everyone is braced for it. On the train the lift is a crime; with your savings, it would be a line in the terms of service.

Agents Have to Compete for You

Give the counterargument its full weight. Brokerage sweeps hid their rates inside disclosures nobody read, and clients had picked a human adviser to trust. Agents live in the open. Rates are public and machine-readable, and a rival agent can post a screenshot showing yours parked your cash at 3% while 5% sat one call away. Switching agents costs a download. Meta's fee comes from merchants, so the user pays nothing. And a company of Meta's size has more to lose from one savings scandal than it could gain from a sliver of spread. Under that pressure, an agent that shades your yield is an agent about to lose you, and the money reaches the best rate after all.

The argument fails on the evidence so far. The SEC's January 2025 orders concern firms whose own platforms carried cash alternatives paying far more, and the low default held regardless. sec-wells-merrill financial-planning-sweeps Competition also works only on the choice of agent, which a person makes once and rarely revisits. Adams, Hunt, Palmer and Zaliauskas showed in the Journal of Financial Economics in 2021 how seldom savers leave even a worse account. adams-jfe-savings There is little reason to expect them to audit an agent more closely. It would win in one place: where the law does the competing. Todd Phillips, writing in Finance and Society in October 2025, notes that US agents are software with no fiduciary duty. No US banking regulator yet has the authority to impose one. phillips-deposit-broker Britain is closer: firms providing payment services have been bound since July 2023 by the FCA's Consumer Duty to deliver good outcomes for retail customers. farrer-consumer-duty Whether that duty reaches the ranking inside an agent is a question British regulators should answer before the first savings sweep goes live.

Before You Tap Approve

The run is possible, but the toll is the likelier cost, because the automated sweeps we can study moved money toward whoever owned the default. So before an agent touches your cash, ask who pays it when the money moves, and which rule makes it put you first. Whoever taps Approve on a savings sweep this winter will feel looked after, and have no way to see what was left off the list.