SENAX vs. TWHIX

Last updated Jun 4, 2026

SENAX (Allspring Discovery Mid Cap Growth Fund) and TWHIX (American Century Heritage Fund) are both Mid Cap Growth Equities funds. Over the past 10 years, SENAX returned 11.49%/yr vs 12.10%/yr for TWHIX. With a 0.95 correlation, they move nearly in lockstep. SENAX charges 1.18%/yr vs 1.00%/yr for TWHIX.

Performance

SENAX vs. TWHIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Allspring Discovery Mid Cap Growth Fund (SENAX) and American Century Heritage Fund (TWHIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SENAX achieves a 7.68% return, which is significantly higher than TWHIX's 6.69% return. Over the past 10 years, SENAX has underperformed TWHIX with an annualized return of 11.49%, while TWHIX has yielded a comparatively higher 12.10% annualized return.

SENAX

• 1D: 0.33%
• 1M: 3.48%
• YTD: 7.68%
• 6M: 5.36%
• 1Y: 14.54%
• 3Y*: 16.66%
• 5Y*: 2.56%
• 10Y*: 11.49%

TWHIX

• 1D: -0.27%
• 1M: 6.13%
• YTD: 6.69%
• 6M: 4.63%
• 1Y: 7.33%
• 3Y*: 15.52%
• 5Y*: 6.42%
• 10Y*: 12.10%

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

SENAX vs. TWHIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SENAX Allspring Discovery Mid Cap Growth Fund	7.68%	13.41%	19.25%	24.00%	-41.92%	2.58%	57.96%	40.64%	-5.97%	28.54%
TWHIX American Century Heritage Fund	6.69%	6.53%	24.66%	20.64%	-28.13%	11.52%	42.61%	35.50%	-5.08%	21.83%

Correlation

The correlation between SENAX and TWHIX is 0.95 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.95
Correlation (5Y) Calculated over the trailing 5-year period	0.95
Correlation (10Y) Calculated over the trailing 10-year period	0.95
Correlation (All Time) Calculated using the full available price history since Jan 3, 2001	0.95

The correlation between SENAX and TWHIX has been stable across timeframes, ranging from 0.95 to 0.95 - a consistent structural relationship.

Return for Risk

SENAX vs. TWHIX — Risk / Return Rank

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

SENAX

SENAX Risk / Return Rank: 11
SENAX Sharpe Ratio Rank: 10
SENAX Sortino Ratio Rank: 11
SENAX Omega Ratio Rank: 10
SENAX Calmar Ratio Rank: 12
SENAX Martin Ratio Rank: 14

TWHIX

TWHIX Risk / Return Rank: 6
TWHIX Sharpe Ratio Rank: 6
TWHIX Sortino Ratio Rank: 6
TWHIX Omega Ratio Rank: 6
TWHIX Calmar Ratio Rank: 6
TWHIX Martin Ratio Rank: 6

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.

SENAX vs. TWHIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Allspring Discovery Mid Cap Growth Fund (SENAX) and American Century Heritage Fund (TWHIX). 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.

	SENAX	TWHIX	Difference
Sharpe ratio: Return per unit of total volatility	0.83	0.49	+0.34
Sortino ratio: Return per unit of downside risk	1.27	0.80	+0.47
Omega ratio: Gain probability vs. loss probability	1.15	1.09	+0.06
Calmar ratio: Return relative to maximum drawdown	1.16	0.53	+0.63
Martin ratio: Return relative to average drawdown	4.05	1.55	+2.50
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SENAX vs. TWHIX - Sharpe Ratio Comparison

The current SENAX Sharpe Ratio is 0.83, which is higher than the TWHIX Sharpe Ratio of 0.49. The chart below compares the historical Sharpe Ratios of SENAX and TWHIX, 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

	SENAX	TWHIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.83	0.49	+0.34
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.09	0.28	-0.19
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.45	0.53	-0.09
Sharpe Ratio (All Time) Calculated using the full available price history	0.30	0.53	-0.23

Drawdowns

SENAX vs. TWHIX - Drawdown Comparison

The maximum SENAX drawdown since its inception was -58.34%, roughly equal to the maximum TWHIX drawdown of -56.98%. Use the drawdown chart below to compare losses from any high point for SENAX and TWHIX.

Drawdown Indicators

	SENAX	TWHIX	Difference
Max Drawdown Largest peak-to-trough decline	-58.34%	-56.98%	-1.36%
Max Drawdown (1Y) Largest decline over 1 year	-13.59%	-15.82%	+2.23%
Max Drawdown (3Y) Largest decline over 3 years	-27.44%	-26.30%	-1.14%
Max Drawdown (5Y) Largest decline over 5 years	-55.14%	-40.34%	-14.80%
Max Drawdown (10Y) Largest decline over 10 years	-55.14%	-40.34%	-14.80%
Current Drawdown Current decline from peak	-13.12%	-0.27%	-12.85%
Average Drawdown Average peak-to-trough decline	-17.71%	-12.25%	-5.46%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.88%	5.43%	-1.55%

Volatility

SENAX vs. TWHIX - Volatility Comparison

Allspring Discovery Mid Cap Growth Fund (SENAX) has a higher volatility of 5.41% compared to American Century Heritage Fund (TWHIX) at 4.13%. This indicates that SENAX's price experiences larger fluctuations and is considered to be riskier than TWHIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SENAX	TWHIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.41%	4.13%	+1.28%
Volatility (6M) Calculated over the trailing 6-month period	15.38%	13.69%	+1.69%
Volatility (1Y) Calculated over the trailing 1-year period	19.07%	17.35%	+1.72%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	28.79%	23.25%	+5.54%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	25.83%	22.82%	+3.01%

SENAX vs. TWHIX - Expense Ratio Comparison

SENAX has a 1.18% expense ratio, which is higher than TWHIX's 1.00% expense ratio.

Dividends

SENAX vs. TWHIX - Dividend Comparison

SENAX's dividend yield for the trailing twelve months is around 11.20%, less than TWHIX's 20.75% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SENAX Allspring Discovery Mid Cap Growth Fund	11.20%	12.06%	10.88%	2.46%	0.00%	17.81%	9.16%	6.59%	15.14%	11.23%	4.58%	8.37%
TWHIX American Century Heritage Fund	20.75%	22.14%	15.58%	0.78%	0.98%	12.00%	13.72%	11.32%	25.33%	9.38%	8.71%	0.00%

Frequently Asked Questions

Can I hold both SENAX and TWHIX in my portfolio?

With a correlation of 0.95, SENAX and TWHIX 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, SENAX or TWHIX?

SENAX has higher volatility (5.41%) compared to TWHIX (4.13%). In terms of maximum drawdown, SENAX dropped -58.34% vs TWHIX's -56.98%.

Which has better risk-adjusted returns?

SENAX currently has the higher Sharpe Ratio (0.83 vs 0.49), 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.