Transferring a retirement account between custodians is one of those mundane logistical tasks that triggers outsized emotional reactions. A person named D recently called Talking about real money with exactly that anxiety, telling host Tom Henske that “there was a big day in the market recently and I had submitted an 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 the money would be out of the market, but it made me nervous.”
It’s worth digesting Henske’s rethink before you click submit an ACAT application.
Quick reading
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SPDR S&P 500 ETF (SPY) is up 8.86% year to date and 26.49% over the past year, with market volatility as measured by VIX ranging between 13.47 and 31.05 in recent months.
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The timing of inter-custodian retirement account transfers does not significantly affect long-term investment returns, as investors are equally likely to miss down days as up days during the transfer window.
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The rethinking of “Miss Down Days Too”
Henske rejected the asymmetric framework that investors apply to short transfer windows. “You have to remember that you’re a long-term investor. I know that. And you’re just as likely to miss a bad day as a good day,” he said, citing the approximate base rate: “I think 75% of the months are high and 25% are low. It’s pretty much the same when it comes to years. It’s about 3 out of every 4 years that the market is up and 1 quarter when it’s down.”
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Those odds favor staying invested, but they also mean that any two-week ACAT window is a coin toss disguised 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 very well,” he said, adding that the same friction “may be the same with Fidelity.” A clean ACAT “could be as fast as 5 days” and typically takes “a couple of weeks tops if done right.” TIAA also requires its own outbound documentation: “TIAA does not accept any documentation from Schwab. If you transfer money from TIAA to Schwab, you must use their documentation.”
What the market really 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 went from a low of 13.47 on December 24, 2025 to a high of 31.05 on March 27, 2026, standing at 17.87 today. The 10-year Treasury yield is at 4.46%, near the top end of its 12-month range, while the University of Michigan Consumer Confidence is at a bearish 53.3. No one saw that path coming in January, and no transfer window could be scheduled to prevent it.