FSSKX vs. AULDX

Last updated Jun 23, 2026

FSSKX (Fidelity Advisor Stock Selector All Cap Fund Class K) and AULDX (American Century Ultra Fund Class R6) are both Large Cap Growth Equities funds. Over the past 10 years, FSSKX returned 15.55%/yr vs 18.33%/yr for AULDX. Their correlation of 0.92 suggests significant overlap in exposure. FSSKX charges 0.58%/yr vs 0.52%/yr for AULDX.

Performance

FSSKX vs. AULDX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Advisor Stock Selector All Cap Fund Class K (FSSKX) and American Century Ultra Fund Class R6 (AULDX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FSSKX achieves a 15.58% return, which is significantly higher than AULDX's 5.47% return. Over the past 10 years, FSSKX has underperformed AULDX with an annualized return of 15.55%, while AULDX has yielded a comparatively higher 18.33% annualized return.

FSSKX

• 1D: 1.43%
• 1M: 1.84%
• YTD: 15.58%
• 6M: 15.37%
• 1Y: 35.91%
• 3Y*: 21.88%
• 5Y*: 13.26%
• 10Y*: 15.55%

AULDX

• 1D: 1.51%
• 1M: -1.75%
• YTD: 5.47%
• 6M: 4.82%
• 1Y: 21.86%
• 3Y*: 19.64%
• 5Y*: 11.49%
• 10Y*: 18.33%

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

FSSKX vs. AULDX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FSSKX Fidelity Advisor Stock Selector All Cap Fund Class K	15.58%	18.98%	19.89%	27.04%	-19.47%	23.28%	25.01%	32.33%	-8.52%	24.38%
AULDX American Century Ultra Fund Class R6	5.47%	13.05%	29.99%	43.86%	-32.15%	23.89%	50.31%	35.23%	1.04%	32.36%

Correlation

The correlation between FSSKX and AULDX is 0.92, 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	0.92
Correlation (3Y) Calculated over the trailing 3-year period	0.90
Correlation (5Y) Calculated over the trailing 5-year period	0.92
Correlation (10Y) Calculated over the trailing 10-year period	0.92
Correlation (All Time) Calculated using the full available price history since Jan 2, 2014	0.92

The correlation between FSSKX and AULDX has been stable across timeframes, ranging from 0.90 to 0.92 - a consistent structural relationship.

Return for Risk

FSSKX vs. AULDX — Risk / Return Rank

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

FSSKX

FSSKX Risk / Return Rank: 85
FSSKX Sharpe Ratio Rank: 87
FSSKX Sortino Ratio Rank: 80
FSSKX Omega Ratio Rank: 80
FSSKX Calmar Ratio Rank: 86
FSSKX Martin Ratio Rank: 93

AULDX

AULDX Risk / Return Rank: 19
AULDX Sharpe Ratio Rank: 21
AULDX Sortino Ratio Rank: 19
AULDX Omega Ratio Rank: 20
AULDX Calmar Ratio Rank: 17
AULDX Martin Ratio Rank: 19

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.

FSSKX vs. AULDX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Advisor Stock Selector All Cap Fund Class K (FSSKX) and American Century Ultra Fund Class R6 (AULDX). 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.

	FSSKX	AULDX	Difference
Sharpe ratio: Return per unit of total volatility	2.62	1.23	+1.39
Sortino ratio: Return per unit of downside risk	3.47	1.72	+1.75
Omega ratio: Gain probability vs. loss probability	1.47	1.22	+0.26
Calmar ratio: Return relative to maximum drawdown	3.93	1.36	+2.57
Martin ratio: Return relative to average drawdown	18.45	4.65	+13.79

FSSKX vs. AULDX - Sharpe Ratio Comparison

The current FSSKX Sharpe Ratio is 2.62, which is higher than the AULDX Sharpe Ratio of 1.23. The chart below compares the historical Sharpe Ratios of FSSKX and AULDX, 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

FSSKX vs. AULDX - Drawdown Comparison

The maximum FSSKX drawdown since its inception was -53.43%, which is greater than AULDX's maximum drawdown of -35.03%. Use the drawdown chart below to compare losses from any high point for FSSKX and AULDX.

Drawdown Indicators

	FSSKX	AULDX	Difference
Max Drawdown Largest peak-to-trough decline	-53.43%	-35.03%	-18.40%
Max Drawdown (1Y) Largest decline over 1 year	-9.20%	-15.60%	+6.40%
Max Drawdown (3Y) Largest decline over 3 years	-20.84%	-24.78%	+3.94%
Max Drawdown (5Y) Largest decline over 5 years	-25.20%	-35.03%	+9.83%
Max Drawdown (10Y) Largest decline over 10 years	-34.37%	-35.03%	+0.66%
Current Drawdown Current decline from peak	-0.25%	-4.34%	+4.09%
Average Drawdown Average peak-to-trough decline	-7.69%	-6.18%	-1.51%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.95%	4.55%	-2.60%

Volatility

FSSKX vs. AULDX - Volatility Comparison

The current volatility for Fidelity Advisor Stock Selector All Cap Fund Class K (FSSKX) is 5.45%, while American Century Ultra Fund Class R6 (AULDX) has a volatility of 6.47%. This indicates that FSSKX experiences smaller price fluctuations and is considered to be less risky than AULDX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FSSKX	AULDX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.45%	6.47%	-1.02%
Volatility (6M) Calculated over the trailing 6-month period	11.07%	13.59%	-2.52%
Volatility (1Y) Calculated over the trailing 1-year period	13.78%	17.18%	-3.40%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.91%	22.69%	-4.78%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.64%	22.14%	-3.50%

FSSKX vs. AULDX - Expense Ratio Comparison

FSSKX has a 0.58% expense ratio, which is higher than AULDX's 0.52% expense ratio.

Dividends

FSSKX vs. AULDX - Dividend Comparison

FSSKX's dividend yield for the trailing twelve months is around 4.13%, less than AULDX's 10.05% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AULDX American Century Ultra Fund Class R6	10.05%	10.60%	3.32%	5.68%	6.97%	6.42%	2.67%	4.18%	7.94%	6.19%	4.45%	5.06%
FSSKX Fidelity Advisor Stock Selector All Cap Fund Class K	4.13%	4.78%	4.87%	2.11%	0.38%	1.44%	5.29%	6.17%	4.37%	3.07%	1.12%	5.23%

Frequently Asked Questions

Can I hold both FSSKX and AULDX in my portfolio?

With a correlation of 0.92, FSSKX and AULDX 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, FSSKX or AULDX?

AULDX has higher volatility (6.47%) compared to FSSKX (5.45%). In terms of maximum drawdown, FSSKX dropped -53.43% vs AULDX's -35.03%.

Which has better risk-adjusted returns?

FSSKX currently has the higher Sharpe Ratio (2.62 vs 1.23), 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.