MMasters in Business
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06 November 2025

At The Money: Automate Your Investing

2Frameworks
4Insights

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Frameworks in this episode

Insights & moments

The myth-busts, hot takes, explainers, and tools worth keeping.

Hot Take· 1

Hot Take10:06

AI Can Improve an Investment Plan—or Inflate Confidence

Ptak expects AI to help investors formulate plans, allocate assets, and stay aligned with goals and risk parameters. He also warns that the same tool can create overconfidence and tempt users into trading decisions outside their circle of competence.

  • AI may help an investor formulate a financial plan.
  • It may support asset allocation and goal adherence.
  • The tool can also create unjustified confidence in trading ability.
  • Use should be judged by whether it advances goals within stated risk parameters.

“maybe helping them to formulate a plan, maybe figuring out the optimal way for them to allocate their assets”

Jeffrey Ptak · 10:36

“The other side of it is it can engender over confidence.”

Jeffrey Ptak · 10:50
#ai investing#overconfidence#asset allocation#risk

Explainer· 1

Explainer02:44

Allocation Funds Cut the Investor Return Gap to Almost Zero

Morningstar's gap study found that investors in allocation funds, led by target-date funds, captured nearly all of their funds' total returns. Ptak contrasts their 0.1-percentage-point annual gap with roughly 1.2 percentage points across other fund types, while noting that the evidence is inferential rather than brokerage tick data.

  • Allocation-fund investors had an annual return gap of about 0.1 percentage points.
  • Other fund types had a gap of about 1.2 percentage points per year.
  • The difference implies roughly 1.1 percentage points of annual return foregone.
  • Ptak links the result to fewer timing and transaction frictions but acknowledges the inference.

“investors in allocation funds, the most popular version of which are target date funds, they do the best job of capturing their funds total returns.”

Jeffrey Ptak · 03:01

“It amounts to around one point one percentage points annually of return that's being foregone effectively.”

Jeffrey Ptak · 06:01
#investor returns#allocation funds#behavior gap#morningstar

Takeaway· 2

Takeaway06:15

Only 1% of Target-Date Investors Transacted in 2024

Ptak cites Vanguard's How America Saves study to show the reach and behavioral effect of retirement-plan defaults. In 2024, only 1% of target-date fund investors transacted, versus 11% of investors in other fund types.

  • Vanguard reported that 61% of the client plans it serviced had auto enrollment.
  • Two thirds of plans with auto enrollment also offered auto escalation.
  • Ninety-eight percent of automatically enrolled participants were defaulted into a target-date fund.
  • Target-date investors transacted at 1%, compared with 11% for investors in other fund types.

“They found that one percent of target date fund investors transacted last year that'd be twenty twenty four, compared to eleven percent of investors and…”

Jeffrey Ptak · 08:02
#target-date funds#vanguard#trading behavior#retirement plans
Takeaway08:21

Auto Enrollment Helps Younger and Lower-Earning Workers Most

Vanguard's study found that auto enrollment disproportionately benefited younger and lower-earning retirement-plan participants. Ptak sees this as important because these more vulnerable cohorts might otherwise lose the opportunity to begin compounding wealth.

  • The measured benefit was not evenly distributed across demographic groups.
  • Younger participants gained disproportionately from automatic enrollment.
  • Lower-earning participants also received a larger benefit.
  • Earlier participation gives vulnerable cohorts more opportunity to compound wealth.

“They found that auto enrollment disproportionately benefited younger and lower earning participants.”

Jeffrey Ptak · 08:31

“auto enrollment has helped to ensure that those gaps get closed.”

Jeffrey Ptak · 09:01
#auto enrollment#younger investors#lower earners#wealth building