TMBTX vs. IAAAX

Last updated Jun 4, 2026

TMBTX (Transamerica Intermediate Bond) and IAAAX (Transamerica Asset Allocation Growth Portfolio Fund) are both mutual funds - TMBTX is a Intermediate Core Bond fund managed by Transamerica, while IAAAX is a Diversified Portfolio fund managed by Transamerica. Over the past 10 years, TMBTX returned 1.30%/yr vs 11.15%/yr for IAAAX. At a correlation of -0.03, they often move in opposite directions. TMBTX charges 0.41%/yr vs 0.49%/yr for IAAAX.

Performance

TMBTX vs. IAAAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Transamerica Intermediate Bond (TMBTX) and Transamerica Asset Allocation Growth Portfolio Fund (IAAAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TMBTX achieves a 0.34% return, which is significantly lower than IAAAX's 10.35% return. Over the past 10 years, TMBTX has underperformed IAAAX with an annualized return of 1.30%, while IAAAX has yielded a comparatively higher 11.15% annualized return.

TMBTX

• 1D: 0.00%
• 1M: 0.47%
• YTD: 0.34%
• 6M: 0.26%
• 1Y: 5.44%
• 3Y*: 3.77%
• 5Y*: -0.10%
• 10Y*: 1.30%

IAAAX

• 1D: 0.16%
• 1M: 5.48%
• YTD: 10.35%
• 6M: 11.52%
• 1Y: 26.56%
• 3Y*: 20.03%
• 5Y*: 9.85%
• 10Y*: 11.15%

*Multi-year figures are annualized to reflect compound growth (CAGR)

TMBTX vs. IAAAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
TMBTX Transamerica Intermediate Bond	0.34%	7.10%	1.12%	4.13%	-13.15%	-0.94%	7.65%	8.97%	-0.63%	3.61%
IAAAX Transamerica Asset Allocation Growth Portfolio Fund	10.35%	21.45%	17.37%	20.04%	-19.24%	16.14%	18.87%	21.75%	-11.48%	20.17%

Correlation

The correlation between TMBTX and IAAAX is 0.32, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.32
Correlation (3Y) Calculated over the trailing 3-year period	0.25
Correlation (5Y) Calculated over the trailing 5-year period	0.16
Correlation (10Y) Calculated over the trailing 10-year period	0.02
Correlation (All Time) Calculated using the full available price history since Aug 6, 2012	-0.03

The correlation between TMBTX and IAAAX shifts across timeframes, from -0.03 (all time) to 0.32 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

TMBTX vs. IAAAX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

TMBTX

TMBTX Risk / Return Rank: 23
TMBTX Sharpe Ratio Rank: 24
TMBTX Sortino Ratio Rank: 24
TMBTX Omega Ratio Rank: 22
TMBTX Calmar Ratio Rank: 26
TMBTX Martin Ratio Rank: 22

IAAAX

IAAAX Risk / Return Rank: 53
IAAAX Sharpe Ratio Rank: 51
IAAAX Sortino Ratio Rank: 48
IAAAX Omega Ratio Rank: 48
IAAAX Calmar Ratio Rank: 53
IAAAX Martin Ratio Rank: 63

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

TMBTX vs. IAAAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Transamerica Intermediate Bond (TMBTX) and Transamerica Asset Allocation Growth Portfolio Fund (IAAAX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	TMBTX	IAAAX	Difference
Sharpe ratio Return per unit of total volatility	1.40	2.10	-0.70
Sortino ratio Return per unit of downside risk	2.06	2.93	-0.87
Omega ratio Gain probability vs. loss probability	1.25	1.38	-0.14
Calmar ratio Return relative to maximum drawdown	1.89	2.77	-0.88
Martin ratio Return relative to average drawdown	5.56	12.39	-6.83
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

TMBTX vs. IAAAX - Sharpe Ratio Comparison

The current TMBTX Sharpe Ratio is 1.40, which is lower than the IAAAX Sharpe Ratio of 2.10. The chart below compares the historical Sharpe Ratios of TMBTX and IAAAX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	TMBTX	IAAAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.40	2.10	-0.70
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.02	0.61	-0.62
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.26	0.66	-0.40
Sharpe Ratio (All Time) Calculated using the full available price history	0.13	0.43	-0.29

Drawdowns

TMBTX vs. IAAAX - Drawdown Comparison

The maximum TMBTX drawdown since its inception was -18.61%, smaller than the maximum IAAAX drawdown of -56.57%. Use the drawdown chart below to compare losses from any high point for TMBTX and IAAAX.

Drawdown Indicators

	TMBTX	IAAAX	Difference
Max Drawdown Largest peak-to-trough decline	-18.61%	-56.57%	+37.96%
Max Drawdown (1Y) Largest decline over 1 year	-2.95%	-9.85%	+6.90%
Max Drawdown (3Y) Largest decline over 3 years	-6.37%	-17.90%	+11.53%
Max Drawdown (5Y) Largest decline over 5 years	-18.61%	-29.29%	+10.68%
Max Drawdown (10Y) Largest decline over 10 years	-18.61%	-35.34%	+16.73%
Current Drawdown Current decline from peak	-3.43%	0.00%	-3.43%
Average Drawdown Average peak-to-trough decline	-6.07%	-9.53%	+3.46%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.00%	2.19%	-1.19%

Volatility

TMBTX vs. IAAAX - Volatility Comparison

The current volatility for Transamerica Intermediate Bond (TMBTX) is 1.36%, while Transamerica Asset Allocation Growth Portfolio Fund (IAAAX) has a volatility of 3.36%. This indicates that TMBTX experiences smaller price fluctuations and is considered to be less risky than IAAAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TMBTX	IAAAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.36%	3.36%	-2.00%
Volatility (6M) Calculated over the trailing 6-month period	2.95%	10.13%	-7.18%
Volatility (1Y) Calculated over the trailing 1-year period	4.00%	12.99%	-8.99%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.89%	16.33%	-10.44%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.94%	16.85%	-11.91%

TMBTX vs. IAAAX - Expense Ratio Comparison

TMBTX has a 0.41% expense ratio, which is lower than IAAAX's 0.49% expense ratio.

Dividends

TMBTX vs. IAAAX - Dividend Comparison

TMBTX's dividend yield for the trailing twelve months is around 4.27%, less than IAAAX's 6.54% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IAAAX Transamerica Asset Allocation Growth Portfolio Fund	6.54%	7.21%	5.16%	2.79%	8.74%	8.25%	4.13%	9.02%	19.05%	11.01%	8.16%	9.44%
TMBTX Transamerica Intermediate Bond	4.27%	4.25%	4.18%	2.39%	2.90%	3.53%	5.64%	2.74%	2.86%	1.87%	0.00%	0.00%

Frequently Asked Questions

Can I hold both TMBTX and IAAAX in my portfolio?

TMBTX and IAAAX have a correlation of 0.32, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, TMBTX or IAAAX?

IAAAX has higher volatility (3.36%) compared to TMBTX (1.36%). In terms of maximum drawdown, TMBTX dropped -18.61% vs IAAAX's -56.57%.

Which has better risk-adjusted returns?

IAAAX currently has the higher Sharpe Ratio (2.10 vs 1.40), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.