Transferring a retirement account between custodians is one of those mundane logistical tasks that triggers outsized emotional reactions. A caller named D recently phoned in to Talking Real Money with exactly that anxiety, telling host Tom Henske that “recently there was a big up day in the market and I had put in a ACAT transfer request from TIAA to Fidelity, and it didn’t go through,” and admitting “I know logically it shouldn’t make any difference outside of the time that the money would be out of the market, but it made me nervous.”
Henske’s reframe is worth absorbing before you ever click submit on an ACAT request.
Quick Read
SPDR S&P 500 ETF (SPY) is up 8.86% year to date and 26.49% over the past year, with market volatility measured by the VIX ranging from 13.47 to 31.05 over recent months.
The timing of retirement account transfers between custodians does not meaningfully affect long-term investment returns since investors are equally likely to miss down days as up days during the transfer window.
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The “Miss Down Days Too” Reframe
Henske pushed back on the asymmetric framing investors apply to short transfer windows. “You gotta remember that you’re a long-term investor. I know that. And you’re as likely to miss a down day as you are up days,” he said, citing the rough base rate: “I think it’s 75% of the months are up and 25% are down. It’s about the same when it comes to years. It’s about 3 out of 4 years the market’s up and 1 quarter when it’s down.”
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Those odds favor staying invested, yet they also mean any given two-week ACAT window is a coin flip dressed up as a tragedy.
The Mechanics of an ACAT Transfer
Henske noted that TIAA has its own quirks. “TIAA and Charles Schwab don’t get along all that well,” he said, adding that the same friction “may be the same with Fidelity.” A clean ACAT “could be as quick as 5 days” and typically takes “a couple of weeks at the outside if they’re done right.” TIAA also requires its own outbound paperwork: “TIAA does not accept any Schwab paperwork. You have to, if you’re moving money from TIAA to Schwab, you gotta use their paperwork.”
What the Market Actually Did
Consider the backdrop. The S&P 500 ETF is up 8.86% year to date and 26.49% over the past year. Meanwhile the VIX swung from a low of 13.47 on December 24, 2025 to a high of 31.05 on March 27, 2026, sitting today at 17.87. The 10-year Treasury yield is at 4.46%, near the upper end of its 12-month range, while University of Michigan consumer sentiment sits at a pessimistic 53.3. Nobody saw that path coming in January, and no transfer window could be timed around it.