APPF vs. SPY

Last updated Jul 14, 2026

APPF (AppFolio, Inc.) is a stock, while SPY (State Street SPDR S&P 500 ETF) is S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, APPF returned 28.15%/yr vs 15.08%/yr for SPY. At a 0.44 correlation, their price movements are largely independent.

Performance

APPF vs. SPY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AppFolio, Inc. (APPF) and State Street SPDR S&P 500 ETF (SPY). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, APPF achieves a -22.67% return, which is significantly lower than SPY's 10.45% return. Over the past 10 years, APPF has outperformed SPY with an annualized return of 28.15%, while SPY has yielded a comparatively lower 15.08% annualized return.

APPF

• 1D: 2.46%
• 1M: 11.59%
• 6M: -19.26%
• YTD: -22.67%
• 1Y: -24.31%
• 3Y*: -1.54%
• 5Y*: 5.91%
• 10Y*: 28.15%

SPY

• 1D: -0.77%
• 1M: 1.26%
• 6M: 8.34%
• YTD: 10.45%
• 1Y: 21.46%
• 3Y*: 20.07%
• 5Y*: 12.94%
• 10Y*: 15.08%

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

APPF vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
APPF AppFolio, Inc.	-22.67%	-5.70%	42.42%	64.40%	-12.95%	-32.76%	63.75%	85.66%	42.70%	74.00%
SPY State Street SPDR S&P 500 ETF	10.45%	17.72%	24.89%	26.18%	-18.18%	28.73%	18.33%	31.22%	-4.57%	21.71%

Correlation

The correlation between APPF and SPY is 0.22, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.22
Correlation (3Y) Calculated over the trailing 3-year period	0.40
Correlation (5Y) Calculated over the trailing 5-year period	0.47
Correlation (10Y) Calculated over the trailing 10-year period	0.45
Correlation (All Time) Calculated using the full available price history since Jun 26, 2015	0.44

Over the past year, the correlation between APPF and SPY has dropped to 0.22 - well below their long-term average of 0.44, suggesting their price drivers have been diverging.

Return for Risk

APPF vs. SPY — Risk / Return Rank

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

APPF

APPF Risk / Return Rank: 25
APPF Sharpe Ratio Rank: 20
APPF Sortino Ratio Rank: 20
APPF Omega Ratio Rank: 21
APPF Calmar Ratio Rank: 30
APPF Martin Ratio Rank: 32

SPY

SPY Risk / Return Rank: 66
SPY Sharpe Ratio Rank: 66
SPY Sortino Ratio Rank: 64
SPY Omega Ratio Rank: 65
SPY Calmar Ratio Rank: 61
SPY Martin Ratio Rank: 72

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.

APPF vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AppFolio, Inc. (APPF) and State Street SPDR S&P 500 ETF (SPY). 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.

	APPF	SPY	Difference
Sharpe ratio: Return per unit of total volatility	-0.54	1.71	-2.26
Sortino ratio: Return per unit of downside risk	-0.63	2.37	-3.00
Omega ratio: Gain probability vs. loss probability	0.93	1.31	-0.38
Calmar ratio: Return relative to maximum drawdown	-0.44	2.43	-2.87
Martin ratio: Return relative to average drawdown	-0.67	10.57	-11.25

APPF vs. SPY - Sharpe Ratio Comparison

The current APPF Sharpe Ratio is -0.54, which is lower than the SPY Sharpe Ratio of 1.71. The chart below compares the historical Sharpe Ratios of APPF and SPY, 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

APPF vs. SPY - Drawdown Comparison

The maximum APPF drawdown since its inception was -55.38%, roughly equal to the maximum SPY drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for APPF and SPY.

Drawdown Indicators

	APPF	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-55.38%	-55.19%	-0.19%
Max Drawdown (1Y) Largest decline over 1 year	-55.38%	-8.88%	-46.50%
Max Drawdown (3Y) Largest decline over 3 years	-55.38%	-18.76%	-36.62%
Max Drawdown (5Y) Largest decline over 5 years	-55.38%	-24.50%	-30.88%
Max Drawdown (10Y) Largest decline over 10 years	-55.38%	-33.72%	-21.66%
Current Drawdown Current decline from peak	-44.00%	-1.12%	-42.88%
Average Drawdown Average peak-to-trough decline	-18.59%	-9.02%	-9.57%
Ulcer Index Depth and duration of drawdowns from previous peaks	36.25%	2.03%	+34.22%

Volatility

APPF vs. SPY - Volatility Comparison

AppFolio, Inc. (APPF) has a higher volatility of 14.73% compared to State Street SPDR S&P 500 ETF (SPY) at 4.26%. This indicates that APPF's price experiences larger fluctuations and is considered to be riskier than SPY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	APPF	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	14.73%	4.26%	+10.47%
Volatility (6M) Calculated over the trailing 6-month period	33.70%	10.01%	+23.69%
Volatility (1Y) Calculated over the trailing 1-year period	44.93%	12.60%	+32.33%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	43.45%	17.17%	+26.28%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	44.34%	17.93%	+26.41%

Dividends

APPF vs. SPY - Dividend Comparison

APPF has not paid dividends to shareholders, while SPY's dividend yield for the trailing twelve months is around 1.00%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
APPF AppFolio, Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
SPY State Street SPDR S&P 500 ETF	1.00%	1.07%	1.21%	1.40%	1.65%	1.20%	1.52%	1.75%	2.04%	1.80%	2.03%	2.06%

Frequently Asked Questions

Can I hold both APPF and SPY in my portfolio?

APPF and SPY have a correlation of 0.22, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, APPF or SPY?

APPF has higher volatility (14.73%) compared to SPY (4.26%). In terms of maximum drawdown, APPF dropped -55.38% vs SPY's -55.19%.

Which has better risk-adjusted returns?

SPY currently has the higher Sharpe Ratio (1.71 vs -0.54), 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.