TRFM vs. STHH

Last updated Aug 4, 2026

TRFM (AAM Transformers ETF) and STHH (STMicroelectronics NV ADRhedged) are both Technology Equities funds - TRFM tracks the Pence Transformers Index - Benchmark TR Gross while STHH tracks the STMicroelectronics NV Local Shares Total Return. Both are passively managed. Over the past year, TRFM returned 36.82% vs 114.11% for STHH. Their 0.68 correlation means they have sometimes moved together and sometimes differently. TRFM charges 0.49%/yr vs 0.19%/yr for STHH.

Performance

TRFM vs. STHH - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AAM Transformers ETF (TRFM) and STMicroelectronics NV ADRhedged (STHH). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TRFM achieves a 23.78% return, which is significantly lower than STHH's 107.29% return.

TRFM

• 1D: 2.06%
• 1M: -3.36%
• 6M: 18.96%
• YTD: 23.78%
• 1Y: 36.82%
• 3Y*: 26.86%
• 5Y*: —
• 10Y*: —
• ALL TIME*: 24.50%

STHH

• 1D: -0.49%
• 1M: -23.24%
• 6M: 87.74%
• YTD: 107.29%
• 1Y: 114.11%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 100.76%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
STHH STMicroelectronics NV ADRhedged	$179.41K	$298.65K	$521.22K
TRFM AAM Transformers ETF	$2.70M	$2.28M	$2.00M

TRFM vs. STHH - Yearly Performance Comparison

	2026 (YTD)	2025
TRFM AAM Transformers ETF	23.78%	46.62%
STHH STMicroelectronics NV ADRhedged	107.29%	17.60%

Correlation

The correlation between TRFM and STHH is 0.70, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.70
Correlation (All Time) Calculated using the full available price history since Apr 23, 2025	0.68

The correlation between TRFM and STHH has been stable across timeframes, ranging from 0.68 to 0.70 - a consistent structural relationship.

Return for Risk

TRFM vs. STHH — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

TRFM

TRFM Risk / Return Rank: 60
TRFM Sharpe Ratio Rank: 57
TRFM Sortino Ratio Rank: 53
TRFM Omega Ratio Rank: 51
TRFM Calmar Ratio Rank: 76
TRFM Martin Ratio Rank: 64

STHH

STHH Risk / Return Rank: 79
STHH Sharpe Ratio Rank: 84
STHH Sortino Ratio Rank: 75
STHH Omega Ratio Rank: 80
STHH Calmar Ratio Rank: 80
STHH Martin Ratio Rank: 75

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

TRFM vs. STHH - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AAM Transformers ETF (TRFM) and STMicroelectronics NV ADRhedged (STHH). 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.

	TRFM	STHH	Difference
Sharpe ratio: Return per unit of total volatility	1.45	2.04	-0.59
Sortino ratio: Return per unit of downside risk	1.97	2.52	-0.55
Omega ratio: Gain probability vs. loss probability	1.24	1.35	-0.11
Calmar ratio: Return relative to maximum drawdown	2.85	3.02	-0.17
Martin ratio: Return relative to average drawdown	8.14	9.83	-1.69

TRFM vs. STHH - Sharpe Ratio Comparison

The current TRFM Sharpe Ratio is 1.45, which is comparable to the STHH Sharpe Ratio of 2.04. The chart below compares the historical Sharpe Ratios of TRFM and STHH, 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

TRFM vs. STHH - Drawdown Comparison

The maximum TRFM drawdown since its inception was -28.40%, smaller than the maximum STHH drawdown of -37.98%. Use the drawdown chart below to compare losses from any high point for TRFM and STHH.

Drawdown Indicators

	TRFM	STHH	Difference
Max Drawdown Largest peak-to-trough decline	-28.40%	-37.98%	+9.58%
Max Drawdown (1Y) Largest decline over 1 year	-12.99%	-37.98%	+24.99%
Max Drawdown (3Y) Largest decline over 3 years	-28.40%	—	—
Current Drawdown Current decline from peak	-6.63%	-33.80%	+27.17%
Average Drawdown Average peak-to-trough decline	-6.56%	-10.91%	+4.35%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.54%	11.65%	-7.11%

Volatility

TRFM vs. STHH - Volatility Comparison

The current volatility for AAM Transformers ETF (TRFM) is 7.91%, while STMicroelectronics NV ADRhedged (STHH) has a volatility of 26.83%. This indicates that TRFM experiences smaller price fluctuations and is considered to be less risky than STHH based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TRFM	STHH	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.91%	26.83%	-18.92%
Volatility (6M) Calculated over the trailing 6-month period	20.73%	48.53%	-27.80%
Volatility (1Y) Calculated over the trailing 1-year period	25.59%	56.48%	-30.89%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	27.27%	55.09%	-27.82%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	27.27%	55.09%	-27.82%

TRFM vs. STHH - Expense Ratio Comparison

TRFM has a 0.49% expense ratio, which is higher than STHH's 0.19% expense ratio.

Dividends

TRFM vs. STHH - Dividend Comparison

TRFM's dividend yield for the trailing twelve months is around 0.14%, less than STHH's 0.97% yield.

Position	TTM	2025
STHH STMicroelectronics NV ADRhedged	0.97%	0.69%
TRFM AAM Transformers ETF	0.14%	0.17%

Frequently Asked Questions

Can I hold both TRFM and STHH in my portfolio?

TRFM and STHH have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, TRFM or STHH?

STHH has higher volatility (26.83%) compared to TRFM (7.91%). In terms of maximum drawdown, TRFM dropped -28.40% vs STHH's -37.98%.

Which ETF is better, TRFM or STHH?

On 1-year performance, STHH leads with 114.11% vs 36.82% for TRFM. On fees, STHH is cheaper at 0.19% per year. On volatility, TRFM has been the lower-risk option at 7.91%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, TRFM or STHH?

Over the 1-year period, STHH has performed better with a 114.11% return vs 36.82%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, TRFM or STHH?

STHH is cheaper with a 0.19% expense ratio, compared with 0.49% for TRFM.

Which ETF pays a higher dividend yield, TRFM or STHH?

STHH has the higher dividend yield at 0.97%, compared with 0.14% for TRFM.

What is the main difference between TRFM and STHH?

TRFM tracks Pence Transformers Index - Benchmark TR Gross, while STHH tracks STMicroelectronics NV Local Shares Total Return. They also come from different issuers: AAM and ADRhedged. Their fees differ too: 0.49% for TRFM and 0.19% for STHH.

Which has better risk-adjusted returns?

STHH currently has the higher Sharpe Ratio (2.04 vs 1.45), 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.