BTEKX vs. AAIZX

Last updated Jun 6, 2026

BTEKX (BlackRock Technology Opportunities Fund Class K) and AAIZX (Alger AI Enablers & Adopters Z) are both Technology Equities funds. Both are actively managed. Over the past year, BTEKX returned 63.77% vs 62.30% for AAIZX. Their correlation of 0.91 suggests significant overlap in exposure. BTEKX charges 0.84%/yr vs 0.55%/yr for AAIZX.

Performance

BTEKX vs. AAIZX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BlackRock Technology Opportunities Fund Class K (BTEKX) and Alger AI Enablers & Adopters Z (AAIZX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BTEKX achieves a 40.46% return, which is significantly higher than AAIZX's 26.25% return.

BTEKX

• 1D: -2.00%
• 1M: 11.07%
• YTD: 40.46%
• 6M: 37.43%
• 1Y: 63.77%
• 3Y*: 39.73%
• 5Y*: 17.14%
• 10Y*: —

AAIZX

• 1D: -0.09%
• 1M: 8.52%
• YTD: 26.25%
• 6M: 24.67%
• 1Y: 62.30%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

BTEKX vs. AAIZX - Yearly Performance Comparison

	2026 (YTD)	2025	2024
BTEKX BlackRock Technology Opportunities Fund Class K	40.46%	20.03%	22.43%
AAIZX Alger AI Enablers & Adopters Z	26.25%	41.00%	33.76%

Correlation

The correlation between BTEKX and AAIZX is 0.89, 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	0.89
Correlation (All Time) Calculated using the full available price history since Apr 9, 2024	0.91

The correlation between BTEKX and AAIZX has been stable across timeframes, ranging from 0.89 to 0.91 - a consistent structural relationship.

Return for Risk

BTEKX vs. AAIZX — Risk / Return Rank

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

BTEKX

BTEKX Risk / Return Rank: 67
BTEKX Sharpe Ratio Rank: 81
BTEKX Sortino Ratio Rank: 61
BTEKX Omega Ratio Rank: 62
BTEKX Calmar Ratio Rank: 79
BTEKX Martin Ratio Rank: 53

AAIZX

AAIZX Risk / Return Rank: 72
AAIZX Sharpe Ratio Rank: 87
AAIZX Sortino Ratio Rank: 69
AAIZX Omega Ratio Rank: 66
AAIZX Calmar Ratio Rank: 81
AAIZX Martin Ratio Rank: 56

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.

BTEKX vs. AAIZX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BlackRock Technology Opportunities Fund Class K (BTEKX) and Alger AI Enablers & Adopters Z (AAIZX). 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.

	BTEKX	AAIZX	Difference
Sharpe ratio: Return per unit of total volatility	2.57	2.78	-0.21
Sortino ratio: Return per unit of downside risk	3.19	3.38	-0.19
Omega ratio: Gain probability vs. loss probability	1.42	1.44	-0.01
Calmar ratio: Return relative to maximum drawdown	3.48	3.55	-0.08
Martin ratio: Return relative to average drawdown	10.45	10.80	-0.36
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BTEKX vs. AAIZX - Sharpe Ratio Comparison

The current BTEKX Sharpe Ratio is 2.57, which is comparable to the AAIZX Sharpe Ratio of 2.78. The chart below compares the historical Sharpe Ratios of BTEKX and AAIZX, 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

	BTEKX	AAIZX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.57	2.78	-0.21
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.62	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.88	1.83	-0.95

Drawdowns

BTEKX vs. AAIZX - Drawdown Comparison

The maximum BTEKX drawdown since its inception was -49.08%, which is greater than AAIZX's maximum drawdown of -29.00%. Use the drawdown chart below to compare losses from any high point for BTEKX and AAIZX.

Drawdown Indicators

	BTEKX	AAIZX	Difference
Max Drawdown Largest peak-to-trough decline	-49.08%	-29.00%	-20.08%
Max Drawdown (1Y) Largest decline over 1 year	-18.37%	-17.47%	-0.90%
Max Drawdown (3Y) Largest decline over 3 years	-27.72%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-49.08%	—	—
Current Drawdown Current decline from peak	-2.59%	-1.40%	-1.19%
Average Drawdown Average peak-to-trough decline	-14.99%	-4.98%	-10.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	6.10%	5.73%	+0.37%

Volatility

BTEKX vs. AAIZX - Volatility Comparison

BlackRock Technology Opportunities Fund Class K (BTEKX) has a higher volatility of 9.56% compared to Alger AI Enablers & Adopters Z (AAIZX) at 5.59%. This indicates that BTEKX's price experiences larger fluctuations and is considered to be riskier than AAIZX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BTEKX	AAIZX	Difference
Volatility (1M) Calculated over the trailing 1-month period	9.56%	5.59%	+3.97%
Volatility (6M) Calculated over the trailing 6-month period	20.41%	16.82%	+3.59%
Volatility (1Y) Calculated over the trailing 1-year period	24.84%	22.33%	+2.51%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	28.02%	27.41%	+0.61%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	29.13%	27.41%	+1.72%

BTEKX vs. AAIZX - Expense Ratio Comparison

BTEKX has a 0.84% expense ratio, which is higher than AAIZX's 0.55% expense ratio.

Dividends

BTEKX vs. AAIZX - Dividend Comparison

BTEKX's dividend yield for the trailing twelve months is around 8.66%, more than AAIZX's 5.00% yield.

Position	TTM	2025	2024	2023	2022	2021	2020
AAIZX Alger AI Enablers & Adopters Z	5.00%	6.31%	4.44%	0.00%	0.00%	0.00%	0.00%
BTEKX BlackRock Technology Opportunities Fund Class K	8.66%	12.17%	7.80%	0.00%	0.00%	7.17%	4.46%

Frequently Asked Questions

Can I hold both BTEKX and AAIZX in my portfolio?

BTEKX and AAIZX have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BTEKX or AAIZX?

BTEKX has higher volatility (9.56%) compared to AAIZX (5.59%). In terms of maximum drawdown, BTEKX dropped -49.08% vs AAIZX's -29.00%.

Which has better risk-adjusted returns?

AAIZX currently has the higher Sharpe Ratio (2.78 vs 2.57), 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.