TTIIX vs. STLG

Last updated Jun 23, 2026

TTIIX (TIAA-CREF Lifecycle Index 2055 Fund) and STLG (iShares Factors US Growth Style ETF) are both funds - TTIIX is a Target Retirement Date fund managed by TIAA Investments, while STLG is a Large Cap Growth Equities fund tracking the Russell US Large Cap Factors Growth Style Index. Over the past 5 years, TTIIX returned 10.73%/yr vs 19.14%/yr for STLG. Their correlation of 0.86 suggests significant overlap in exposure. TTIIX charges 0.10%/yr vs 0.25%/yr for STLG.

Performance

TTIIX vs. STLG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in TIAA-CREF Lifecycle Index 2055 Fund (TTIIX) and iShares Factors US Growth Style ETF (STLG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TTIIX achieves a 11.71% return, which is significantly lower than STLG's 19.46% return.

TTIIX

• 1D: 1.21%
• 1M: 1.86%
• YTD: 11.71%
• 6M: 11.52%
• 1Y: 27.51%
• 3Y*: 18.54%
• 5Y*: 10.73%
• 10Y*: 12.34%

STLG

• 1D: -0.10%
• 1M: 3.81%
• YTD: 19.46%
• 6M: 18.14%
• 1Y: 42.17%
• 3Y*: 32.04%
• 5Y*: 19.14%
• 10Y*: —

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

TTIIX vs. STLG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
TTIIX TIAA-CREF Lifecycle Index 2055 Fund	11.71%	20.96%	15.35%	20.75%	-17.59%	17.38%	15.41%
STLG iShares Factors US Growth Style ETF	19.46%	21.49%	37.42%	42.86%	-26.75%	27.99%	26.51%

Correlation

The correlation between TTIIX and STLG is 0.91, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.91
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (All Time) Calculated using the full available price history since Jan 16, 2020	0.86

The correlation between TTIIX and STLG has been stable across timeframes, ranging from 0.86 to 0.91 - a consistent structural relationship.

Return for Risk

TTIIX vs. STLG — Risk / Return Rank

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

TTIIX

TTIIX Risk / Return Rank: 69
TTIIX Sharpe Ratio Rank: 69
TTIIX Sortino Ratio Rank: 65
TTIIX Omega Ratio Rank: 65
TTIIX Calmar Ratio Rank: 69
TTIIX Martin Ratio Rank: 76

STLG

STLG Risk / Return Rank: 67
STLG Sharpe Ratio Rank: 72
STLG Sortino Ratio Rank: 65
STLG Omega Ratio Rank: 65
STLG Calmar Ratio Rank: 64
STLG Martin Ratio Rank: 68

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.

TTIIX vs. STLG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for TIAA-CREF Lifecycle Index 2055 Fund (TTIIX) and iShares Factors US Growth Style ETF (STLG). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	TTIIX	STLG	Difference
Sharpe ratio: Return per unit of total volatility	2.23	2.23	0.00
Sortino ratio: Return per unit of downside risk	3.06	2.88	+0.18
Omega ratio: Gain probability vs. loss probability	1.41	1.38	+0.03
Calmar ratio: Return relative to maximum drawdown	3.06	3.10	-0.03
Martin ratio: Return relative to average drawdown	13.31	12.06	+1.26

TTIIX vs. STLG - Sharpe Ratio Comparison

The current TTIIX Sharpe Ratio is 2.23, which is comparable to the STLG Sharpe Ratio of 2.23. The chart below compares the historical Sharpe Ratios of TTIIX and STLG, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

TTIIX vs. STLG - Drawdown Comparison

The maximum TTIIX drawdown since its inception was -31.76%, roughly equal to the maximum STLG drawdown of -31.34%. Use the drawdown chart below to compare losses from any high point for TTIIX and STLG.

Drawdown Indicators

	TTIIX	STLG	Difference
Max Drawdown Largest peak-to-trough decline	-31.76%	-31.34%	-0.42%
Max Drawdown (1Y) Largest decline over 1 year	-8.92%	-13.69%	+4.77%
Max Drawdown (3Y) Largest decline over 3 years	-15.12%	-23.73%	+8.61%
Max Drawdown (5Y) Largest decline over 5 years	-25.49%	-30.61%	+5.12%
Max Drawdown (10Y) Largest decline over 10 years	-31.76%	—	—
Current Drawdown Current decline from peak	-0.48%	-2.23%	+1.75%
Average Drawdown Average peak-to-trough decline	-4.30%	-7.33%	+3.03%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.05%	3.51%	-1.46%

Volatility

TTIIX vs. STLG - Volatility Comparison

The current volatility for TIAA-CREF Lifecycle Index 2055 Fund (TTIIX) is 4.97%, while iShares Factors US Growth Style ETF (STLG) has a volatility of 8.09%. This indicates that TTIIX experiences smaller price fluctuations and is considered to be less risky than STLG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TTIIX	STLG	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.97%	8.09%	-3.12%
Volatility (6M) Calculated over the trailing 6-month period	10.16%	15.32%	-5.16%
Volatility (1Y) Calculated over the trailing 1-year period	12.26%	19.04%	-6.78%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.77%	22.18%	-7.41%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.77%	23.96%	-8.19%

TTIIX vs. STLG - Expense Ratio Comparison

TTIIX has a 0.10% expense ratio, which is lower than STLG's 0.25% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

TTIIX vs. STLG - Dividend Comparison

TTIIX's dividend yield for the trailing twelve months is around 2.48%, more than STLG's 0.27% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
STLG iShares Factors US Growth Style ETF	0.27%	0.31%	0.38%	0.75%	1.85%	0.67%	0.75%	0.00%	0.00%	0.00%	0.00%	0.00%
TTIIX TIAA-CREF Lifecycle Index 2055 Fund	2.48%	2.77%	2.20%	2.15%	2.29%	2.03%	1.67%	2.22%	2.63%	0.11%	2.37%	0.29%

Frequently Asked Questions

Can I hold both TTIIX and STLG in my portfolio?

With a correlation of 0.91, TTIIX and STLG move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, TTIIX or STLG?

STLG has higher volatility (8.09%) compared to TTIIX (4.97%). In terms of maximum drawdown, TTIIX dropped -31.76% vs STLG's -31.34%.

Which has better risk-adjusted returns?

TTIIX currently has the higher Sharpe Ratio (2.23 vs 2.23), 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.