Why is the cash rate set at 4.5%?

The 4.5% cash rate is an illustrative fixed assumption representing approximate short-term rates (money market funds, high-yield savings). This is a simplifying assumption for educational purposes. The key insight is the opportunity cost relative to long-term equity returns, not the specific cash rate.

How can I reduce the impact of recency bias?

Strategies include: dollar-cost averaging (automatic investing removes timing decisions), written investment policy statements (pre-commitment), longer time horizons (reduces salience of short-term events), and diversification (smooths the ride, reducing panic triggers).

What if I stayed in cash longer than 2 years?

Use the Years in Cash slider to model different scenarios. The sensitivity table shows how the behavior gap scales with time in cash. When the asset return exceeds the cash rate, even 1 year in cash has a measurable cost, and 5+ years can be devastating to long-term wealth.

Recency Bias Calculator: How Return Chasing Hurts Your Portfolio

Enter Values

Initial Investment

Starting portfolio value

Asset Annual Return

Expected long-run annualized return

Years in Cash

years

Years spent in cash avoiding the market

Total Horizon

years

Total investment time horizon

Model Assumptions

Cash Rate Assumed: 4.5%

Illustrative fixed cash-rate assumption (does not update automatically)
Recency bias modeled as one period of cash avoidance followed by re-entry
Buy-and-hold assumes no behavioral interruption
Returns are nominal annual (no inflation adjustment)
No taxes, fees, or transaction costs modeled

Calculator by Ryan O'Connell, CFA

Results

Buy-and-Hold Final Value $672,750 Stayed invested entire horizon

Recency-Biased Final Value $607,157 Sat in cash for 2 years

Behavior Gap $65,593 Annualized Difference: -0.51%/year

2 years in cash cost you $65,593 over 20 years

Portfolio Growth Comparison

Stayed Invested Sat in Cash for 2 Years

Note: The recency-biased path rises more slowly during the cash period (at 4.5%) before re-entering the market.

Sensitivity: Years in Cash

How the behavior gap scales with time spent in cash (all other inputs held constant):

Years in Cash	Buy-Hold FV	Recency FV	Behavior Gap	Annual Diff

Formula Breakdown

Buy-Hold FV = Initial x (1 + r)ⁿ

Recency FV = Initial x (1 + cash)^cash_years x (1 + r)^{(n - cash_years)}

Understanding Recency Bias in Investing

What is Recency Bias?

Recency bias is the cognitive tendency to place more weight on recent events than earlier ones. In investing, this manifests as fleeing to cash after market downturns (because recent losses feel like they will continue) or chasing recent winners (because recent gains feel permanent).

This calculator focuses on the first pattern: the cost of moving to cash after bad news and missing the subsequent recovery.

The Behavior Gap Equation

Behavior Gap = Buy-Hold FV - Recency FV
The dollar cost of poor timing decisions

Two Investment Paths

Buy-and-Hold

Stay invested through volatility.
Captures full market returns over the entire horizon. No behavioral interruption.

Recency-Biased

Exit to cash after downturns.
Earns only the cash rate during avoidance period, then re-enters at a lower base.

Strategies to Combat Recency Bias

Dollar-Cost Averaging: Automatic investing removes timing decisions entirely.
Written Investment Policy: Pre-commit to your strategy before emotions run high.
Longer Time Horizons: Short-term volatility matters less over 20+ years.
Diversification: Smoother returns reduce panic triggers.

Learn More: This calculator is based on concepts from Chapter 16 of Behavioral Finance and Wealth Management by Michael Pompian, covering availability bias and its recency component.

Frequently Asked Questions

Recency bias is the tendency to overweight recent events when making decisions. In investing, this often manifests as fleeing to cash after market downturns (because recent losses feel like they will continue) or chasing recent winners (because recent gains feel permanent). This calculator models the cost of fleeing to cash after bad news - the "availability" variant of recency bias.

The behavior gap is the difference between what an investment earns and what an investor earns due to poor timing decisions. Industry studies often find investor return shortfalls of 1-2% annually tied to timing and behavioral decisions. Over a 20-year horizon, this compounds into a substantial dollar amount - as this calculator demonstrates.

The 4.5% cash rate is an illustrative fixed assumption representing approximate short-term rates (money market funds, high-yield savings). This figure does not update automatically and serves educational purposes. The key insight is the opportunity cost relative to long-term equity returns, not the specific cash rate.

Strategies include: dollar-cost averaging (automatic investing removes timing decisions), written investment policy statements (pre-commitment before emotions run high), longer time horizons (reduces salience of short-term events), and diversification (smooths the ride, reducing panic triggers).

Use the "Years in Cash" input to model different scenarios. The sensitivity table shows how the behavior gap scales with time in cash. When the asset's long-run return exceeds the cash rate, even 1 year in cash has a measurable cost, and 5+ years can be devastating to long-term wealth.

No - this is a simplified model showing the cost of one cash avoidance period. Real market timing involves multiple entry/exit decisions with variable success. Academic research consistently shows that even professional managers fail to time markets successfully. This calculator is for educational purposes only.

Disclaimer

For educational purposes. Not financial advice. Market conventions simplified. This calculator uses a fixed cash rate assumption and models a single cash avoidance period. Actual returns depend on market conditions, timing, taxes, fees, and other factors not modeled here.

Recency Bias Calculator