SEEM vs. TDEC

Last updated Aug 1, 2026

SEEM (SEI Select Emerging Markets Equity ETF) and TDEC (FT Vest Emerging Markets Buffer ETF - December) are both exchange-traded funds - SEEM is a Emerging Markets Equities fund actively managed by SEI, while TDEC is a Defined Outcome fund tracking the MSCI Emerging Markets. SEEM is actively managed, while TDEC is passively managed. Over the past year, SEEM returned 41.57% vs 18.15% for TDEC. Their correlation of 0.91 means they have usually moved in the same direction. SEEM charges 0.60%/yr vs 0.95%/yr for TDEC.

Performance

SEEM vs. TDEC - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SEI Select Emerging Markets Equity ETF (SEEM) and FT Vest Emerging Markets Buffer ETF - December (TDEC). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SEEM achieves a 21.89% return, which is significantly higher than TDEC's 8.27% return.

SEEM

• 1D: 0.46%
• 1M: -2.18%
• 6M: 11.47%
• YTD: 21.89%
• 1Y: 41.57%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 28.48%

TDEC

• 1D: 0.45%
• 1M: 0.74%
• 6M: 4.07%
• YTD: 8.27%
• 1Y: 18.15%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 18.05%

*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)
SEEM SEI Select Emerging Markets Equity ETF	$2.35M	$2.55M	$2.06M
TDEC FT Vest Emerging Markets Buffer ETF - December	$55.89K	$75.20K	$190.42K

SEEM vs. TDEC - Yearly Performance Comparison

	2026 (YTD)	2025	2024
SEEM SEI Select Emerging Markets Equity ETF	21.89%	38.16%	-1.18%
TDEC FT Vest Emerging Markets Buffer ETF - December	8.27%	21.39%	-0.75%

Correlation

The correlation between SEEM and TDEC is 0.93, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.93
Correlation (All Time) Calculated using the full available price history since Dec 23, 2024	0.91

The correlation between SEEM and TDEC has been stable across timeframes, ranging from 0.91 to 0.93 - a consistent structural relationship.

Return for Risk

SEEM vs. TDEC — Risk / Return Rank

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

SEEM

SEEM Risk / Return Rank: 74
SEEM Sharpe Ratio Rank: 74
SEEM Sortino Ratio Rank: 68
SEEM Omega Ratio Rank: 75
SEEM Calmar Ratio Rank: 80
SEEM Martin Ratio Rank: 73

TDEC

TDEC Risk / Return Rank: 70
TDEC Sharpe Ratio Rank: 69
TDEC Sortino Ratio Rank: 67
TDEC Omega Ratio Rank: 80
TDEC Calmar Ratio Rank: 60
TDEC Martin Ratio Rank: 71

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.

SEEM vs. TDEC - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SEI Select Emerging Markets Equity ETF (SEEM) and FT Vest Emerging Markets Buffer ETF - December (TDEC). 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.

	SEEM	TDEC	Difference
Sharpe ratio: Return per unit of total volatility	1.72	1.59	+0.12
Sortino ratio: Return per unit of downside risk	2.25	2.22	+0.03
Omega ratio: Gain probability vs. loss probability	1.31	1.34	-0.03
Calmar ratio: Return relative to maximum drawdown	2.90	2.16	+0.74
Martin ratio: Return relative to average drawdown	9.13	8.78	+0.36

SEEM vs. TDEC - Sharpe Ratio Comparison

The current SEEM Sharpe Ratio is 1.72, which is comparable to the TDEC Sharpe Ratio of 1.59. The chart below compares the historical Sharpe Ratios of SEEM and TDEC, 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

SEEM vs. TDEC - Drawdown Comparison

The maximum SEEM drawdown since its inception was -14.34%, which is greater than TDEC's maximum drawdown of -10.30%. Use the drawdown chart below to compare losses from any high point for SEEM and TDEC.

Drawdown Indicators

	SEEM	TDEC	Difference
Max Drawdown Largest peak-to-trough decline	-14.34%	-10.30%	-4.04%
Max Drawdown (1Y) Largest decline over 1 year	-14.01%	-8.16%	-5.85%
Current Drawdown Current decline from peak	-9.06%	-1.58%	-7.48%
Average Drawdown Average peak-to-trough decline	-2.95%	-1.12%	-1.83%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.44%	2.01%	+2.43%

Volatility

SEEM vs. TDEC - Volatility Comparison

SEI Select Emerging Markets Equity ETF (SEEM) has a higher volatility of 8.72% compared to FT Vest Emerging Markets Buffer ETF - December (TDEC) at 3.54%. This indicates that SEEM's price experiences larger fluctuations and is considered to be riskier than TDEC based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SEEM	TDEC	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.72%	3.54%	+5.18%
Volatility (6M) Calculated over the trailing 6-month period	21.54%	10.30%	+11.24%
Volatility (1Y) Calculated over the trailing 1-year period	23.71%	11.07%	+12.64%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.59%	11.98%	+9.61%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.59%	11.98%	+9.61%

SEEM vs. TDEC - Expense Ratio Comparison

SEEM has a 0.60% expense ratio, which is lower than TDEC's 0.95% expense ratio.

Dividends

SEEM vs. TDEC - Dividend Comparison

SEEM's dividend yield for the trailing twelve months is around 2.73%, while TDEC has not paid dividends to shareholders.

Position	TTM	2025	2024
SEEM SEI Select Emerging Markets Equity ETF	2.73%	3.31%	0.31%
TDEC FT Vest Emerging Markets Buffer ETF - December	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both SEEM and TDEC in my portfolio?

With a correlation of 0.93, SEEM and TDEC 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, SEEM or TDEC?

SEEM has higher volatility (8.72%) compared to TDEC (3.54%). In terms of maximum drawdown, SEEM dropped -14.34% vs TDEC's -10.30%.

Which ETF is better, SEEM or TDEC?

On 1-year performance, SEEM leads with 41.57% vs 18.15% for TDEC. On fees, SEEM is cheaper at 0.60% per year. On volatility, TDEC has been the lower-risk option at 3.54%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, SEEM or TDEC?

Over the 1-year period, SEEM has performed better with a 41.57% return vs 18.15%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, SEEM or TDEC?

SEEM is cheaper with a 0.60% expense ratio, compared with 0.95% for TDEC.

Which ETF pays a higher dividend yield, SEEM or TDEC?

SEEM has the higher dividend yield at 2.73%, compared with 0.00% for TDEC.

What is the main difference between SEEM and TDEC?

SEEM is categorized as Emerging Markets Equities, while TDEC is Defined Outcome. They also come from different issuers: SEI and FT Vest. Their fees differ too: 0.60% for SEEM and 0.95% for TDEC.

Which has better risk-adjusted returns?

SEEM currently has the higher Sharpe Ratio (1.72 vs 1.59), 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.