DISK vs. SEMI

Last updated Jul 27, 2026

DISK (Tema Memory ETF) and SEMI (Columbia Select Technology ETF) are both Semiconductors funds. Both are actively managed. Their correlation of 0.92 means they have usually moved in the same direction. Both charge a 0.75% expense ratio.

Performance

DISK vs. SEMI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Tema Memory ETF (DISK) and Columbia Select Technology ETF (SEMI). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

DISK

• 1D: -9.86%
• 1M: —
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: —

SEMI

• 1D: -1.93%
• 1M: -4.25%
• 6M: 17.71%
• YTD: 20.00%
• 1Y: 33.89%
• 3Y*: 22.97%
• 5Y*: —
• 10Y*: —
• ALL TIME*: 16.31%

*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)
DISK Tema Memory ETF	$13.68M	$15.67M	$15.67M
SEMI Columbia Select Technology ETF	$231.19K	$351.85K	$524.99K

DISK vs. SEMI - Yearly Performance Comparison

	2026 (YTD)
DISK Tema Memory ETF	-30.68%
SEMI Columbia Select Technology ETF	-7.01%

Correlation

The correlation between DISK and SEMI is 0.92, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (All Time) Calculated using the full available price history since Jun 30, 2026	0.92

Return for Risk

DISK vs. SEMI — Risk / Return Rank

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

DISK

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

SEMI

SEMI Risk / Return Rank: 57
SEMI Sharpe Ratio Rank: 54
SEMI Sortino Ratio Rank: 50
SEMI Omega Ratio Rank: 51
SEMI Calmar Ratio Rank: 68
SEMI Martin Ratio Rank: 64

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.

DISK vs. SEMI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Tema Memory ETF (DISK) and Columbia Select Technology ETF (SEMI). 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.

	DISK	SEMI	Difference
Sharpe ratio: Return per unit of total volatility	—	1.29	—
Sortino ratio: Return per unit of downside risk	—	1.77	—
Omega ratio: Gain probability vs. loss probability	—	1.23	—
Calmar ratio: Return relative to maximum drawdown	—	2.38	—
Martin ratio: Return relative to average drawdown	—	7.73	—

Drawdowns

DISK vs. SEMI - Drawdown Comparison

The maximum DISK drawdown since its inception was -32.90%, roughly equal to the maximum SEMI drawdown of -33.46%. Use the drawdown chart below to compare losses from any high point for DISK and SEMI.

Drawdown Indicators

	DISK	SEMI	Difference
Max Drawdown Largest peak-to-trough decline	-32.90%	-33.46%	+0.56%
Max Drawdown (1Y) Largest decline over 1 year	—	-14.41%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-32.93%	—
Current Drawdown Current decline from peak	-32.90%	-9.72%	-23.18%
Average Drawdown Average peak-to-trough decline	-21.04%	-9.78%	-11.26%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	4.43%	—

Volatility

Volatility by Period

	DISK	SEMI	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	10.43%	—
Volatility (6M) Calculated over the trailing 6-month period	—	22.42%	—
Volatility (1Y) Calculated over the trailing 1-year period	110.87%	26.61%	+84.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	110.87%	31.99%	+78.88%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	110.87%	31.99%	+78.88%

DISK vs. SEMI - Expense Ratio Comparison

Both DISK and SEMI have an expense ratio of 0.75%.

Dividends

DISK vs. SEMI - Dividend Comparison

DISK has not paid dividends to shareholders, while SEMI's dividend yield for the trailing twelve months is around 3.74%.

Position	TTM	2025	2024	2023	2022
DISK Tema Memory ETF	0.00%	0.00%	0.00%	0.00%	0.00%
SEMI Columbia Select Technology ETF	3.74%	4.48%	0.96%	0.87%	0.67%

Frequently Asked Questions

Can I hold both DISK and SEMI in my portfolio?

With a correlation of 0.92, DISK and SEMI 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 ETF is better, DISK or SEMI?

Both ETFs have the same 0.75% expense ratio. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, DISK or SEMI?

DISK and SEMI have the same expense ratio: 0.75% per year.

Which ETF pays a higher dividend yield, DISK or SEMI?

SEMI has the higher dividend yield at 3.74%, compared with 0.00% for DISK.

What is the main difference between DISK and SEMI?

They also come from different issuers: Tema and Columbia.