BPTIX vs. SPY

Last updated Jun 23, 2026

BPTIX (Baron Partners Fund Institutional Class) and SPY (State Street SPDR S&P 500 ETF) are both funds - BPTIX is a Large Cap Growth Equities fund managed by Baron Capital Group, while SPY is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, BPTIX returned 25.98%/yr vs 15.70%/yr for SPY. A 0.79 correlation means they provide meaningful diversification when combined. BPTIX charges 1.99%/yr vs 0.09%/yr for SPY.

Performance

BPTIX vs. SPY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Baron Partners Fund Institutional Class (BPTIX) 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, BPTIX achieves a 12.61% return, which is significantly higher than SPY's 9.74% return. Over the past 10 years, BPTIX has outperformed SPY with an annualized return of 25.98%, while SPY has yielded a comparatively lower 15.70% annualized return.

BPTIX

• 1D: -1.26%
• 1M: 14.35%
• YTD: 12.61%
• 6M: 8.74%
• 1Y: 53.31%
• 3Y*: 24.31%
• 5Y*: 15.29%
• 10Y*: 25.98%

SPY

• 1D: -0.31%
• 1M: 0.09%
• YTD: 9.74%
• 6M: 9.27%
• 1Y: 26.65%
• 3Y*: 21.27%
• 5Y*: 13.51%
• 10Y*: 15.70%

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

BPTIX vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BPTIX Baron Partners Fund Institutional Class	12.61%	24.86%	33.09%	43.47%	-42.39%	31.69%	149.45%	47.29%	-1.75%	31.91%
SPY State Street SPDR S&P 500 ETF	9.74%	17.72%	24.89%	26.18%	-18.18%	28.73%	18.33%	31.22%	-4.57%	21.71%

Correlation

The correlation between BPTIX and SPY is 0.59, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.59
Correlation (3Y) Calculated over the trailing 3-year period	0.67
Correlation (5Y) Calculated over the trailing 5-year period	0.72
Correlation (10Y) Calculated over the trailing 10-year period	0.73
Correlation (All Time) Calculated using the full available price history since May 29, 2009	0.79

The correlation between BPTIX and SPY shifts across timeframes, from 0.59 (1 year) to 0.79 (all time), reflecting how their relationship changes across market environments.

Return for Risk

BPTIX vs. SPY — Risk / Return Rank

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

BPTIX

BPTIX Risk / Return Rank: 73
BPTIX Sharpe Ratio Rank: 46
BPTIX Sortino Ratio Rank: 86
BPTIX Omega Ratio Rank: 72
BPTIX Calmar Ratio Rank: 94
BPTIX Martin Ratio Rank: 67

SPY

SPY Risk / Return Rank: 68
SPY Sharpe Ratio Rank: 69
SPY Sortino Ratio Rank: 66
SPY Omega Ratio Rank: 68
SPY Calmar Ratio Rank: 63
SPY Martin Ratio Rank: 74

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.

BPTIX vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Baron Partners Fund Institutional Class (BPTIX) 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.

	BPTIX	SPY	Difference
Sharpe ratio: Return per unit of total volatility	1.84	2.16	-0.32
Sortino ratio: Return per unit of downside risk	3.78	2.91	+0.87
Omega ratio: Gain probability vs. loss probability	1.43	1.39	+0.04
Calmar ratio: Return relative to maximum drawdown	5.00	3.01	+1.99
Martin ratio: Return relative to average drawdown	12.23	13.54	-1.30

BPTIX vs. SPY - Sharpe Ratio Comparison

The current BPTIX Sharpe Ratio is 1.84, which is comparable to the SPY Sharpe Ratio of 2.16. The chart below compares the historical Sharpe Ratios of BPTIX 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

BPTIX vs. SPY - Drawdown Comparison

The maximum BPTIX drawdown since its inception was -51.26%, smaller than the maximum SPY drawdown of -55.19%. Use the drawdown chart below to compare losses from any high point for BPTIX and SPY.

Drawdown Indicators

	BPTIX	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-51.26%	-55.19%	+3.93%
Max Drawdown (1Y) Largest decline over 1 year	-10.64%	-8.88%	-1.76%
Max Drawdown (3Y) Largest decline over 3 years	-33.29%	-18.76%	-14.53%
Max Drawdown (5Y) Largest decline over 5 years	-49.72%	-24.50%	-25.22%
Max Drawdown (10Y) Largest decline over 10 years	-51.26%	-33.72%	-17.54%
Current Drawdown Current decline from peak	-4.52%	-1.75%	-2.77%
Average Drawdown Average peak-to-trough decline	-10.77%	-9.04%	-1.73%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.34%	1.97%	+2.37%

Volatility

BPTIX vs. SPY - Volatility Comparison

Baron Partners Fund Institutional Class (BPTIX) has a higher volatility of 11.09% compared to State Street SPDR S&P 500 ETF (SPY) at 4.64%. This indicates that BPTIX'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

	BPTIX	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	11.09%	4.64%	+6.45%
Volatility (6M) Calculated over the trailing 6-month period	16.00%	9.75%	+6.25%
Volatility (1Y) Calculated over the trailing 1-year period	28.94%	12.43%	+16.51%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	33.94%	17.14%	+16.80%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	32.87%	17.99%	+14.88%

BPTIX vs. SPY - Expense Ratio Comparison

BPTIX has a 1.99% expense ratio, which is higher than SPY's 0.09% expense ratio.

Dividends

BPTIX vs. SPY - Dividend Comparison

BPTIX's dividend yield for the trailing twelve months is around 2.85%, more than SPY's 1.01% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BPTIX Baron Partners Fund Institutional Class	2.85%	3.21%	0.73%	0.00%	3.07%	7.46%	3.57%	1.27%	0.00%	0.00%	0.00%	0.62%
SPY State Street SPDR S&P 500 ETF	1.01%	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 BPTIX and SPY in my portfolio?

BPTIX and SPY have a correlation of 0.59, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BPTIX or SPY?

BPTIX has higher volatility (11.09%) compared to SPY (4.64%). In terms of maximum drawdown, BPTIX dropped -51.26% vs SPY's -55.19%.

Which has better risk-adjusted returns?

SPY currently has the higher Sharpe Ratio (2.16 vs 1.84), 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.