VST vs. PVLA

Last updated Jun 24, 2026

VST (Vistra Corp.) and PVLA (Palvella Therapeutics, Inc) are both stocks. VST operates in Utilities - Independent Power Producers (Utilities), while PVLA operates in Biotechnology (Healthcare). Over the past year, VST returned -12.49% vs 426.53% for PVLA. At a 0.11 correlation, their price movements are largely independent.

Performance

VST vs. PVLA - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vistra Corp. (VST) and Palvella Therapeutics, Inc (PVLA). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VST achieves a 0.94% return, which is significantly lower than PVLA's 13.38% return.

VST

• 1D: -2.91%
• 1M: 4.06%
• YTD: 0.94%
• 6M: 0.72%
• 1Y: -12.49%
• 3Y*: 88.21%
• 5Y*: 57.72%
• 10Y*: —

PVLA

• 1D: -0.13%
• 1M: 4.11%
• YTD: 13.38%
• 6M: 18.36%
• 1Y: 426.53%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

VST vs. PVLA - Yearly Performance Comparison

	2026 (YTD)	2025	2024
VST Vistra Corp.	0.94%	17.66%	-4.69%
PVLA Palvella Therapeutics, Inc	13.38%	772.25%	-8.27%

Correlation

The correlation between VST and PVLA is 0.12, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.12
Correlation (All Time) Calculated using the full available price history since Dec 16, 2024	0.11

Fundamentals

EPS VST : $8.60 PVLA : -$3.75
Total Revenue (TTM) VST : $17.20B PVLA : $0.00
Gross Profit (TTM) VST : $1.12B PVLA : $0.00
EBITDA (TTM) VST : $4.34B PVLA : -$14.75M

Return for Risk

VST vs. PVLA — Risk / Return Rank

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

VST

VST Risk / Return Rank: 31
VST Sharpe Ratio Rank: 32
VST Sortino Ratio Rank: 31
VST Omega Ratio Rank: 31
VST Calmar Ratio Rank: 32
VST Martin Ratio Rank: 31

PVLA

PVLA Risk / Return Rank: 97
PVLA Sharpe Ratio Rank: 99
PVLA Sortino Ratio Rank: 97
PVLA Omega Ratio Rank: 95
PVLA Calmar Ratio Rank: 99
PVLA Martin Ratio Rank: 98

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.

VST vs. PVLA - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vistra Corp. (VST) and Palvella Therapeutics, Inc (PVLA). 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.

	VST	PVLA	Difference
Sharpe ratio: Return per unit of total volatility	-0.26	5.32	-5.58
Sortino ratio: Return per unit of downside risk	-0.04	4.47	-4.51
Omega ratio: Gain probability vs. loss probability	1.00	1.54	-0.54
Calmar ratio: Return relative to maximum drawdown	-0.33	13.82	-14.15
Martin ratio: Return relative to average drawdown	-0.59	31.14	-31.74

VST vs. PVLA - Sharpe Ratio Comparison

The current VST Sharpe Ratio is -0.26, which is lower than the PVLA Sharpe Ratio of 5.32. The chart below compares the historical Sharpe Ratios of VST and PVLA, 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

VST vs. PVLA - Drawdown Comparison

The maximum VST drawdown since its inception was -53.32%, which is greater than PVLA's maximum drawdown of -31.48%. Use the drawdown chart below to compare losses from any high point for VST and PVLA.

Drawdown Indicators

	VST	PVLA	Difference
Max Drawdown Largest peak-to-trough decline	-53.32%	-31.48%	-21.84%
Max Drawdown (1Y) Largest decline over 1 year	-38.01%	-31.11%	-6.90%
Max Drawdown (3Y) Largest decline over 3 years	-48.80%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-48.80%	—	—
Current Drawdown Current decline from peak	-25.17%	-19.99%	-5.18%
Average Drawdown Average peak-to-trough decline	-13.75%	-11.16%	-2.59%
Ulcer Index Depth and duration of drawdowns from previous peaks	21.12%	13.79%	+7.33%

Volatility

VST vs. PVLA - Volatility Comparison

The current volatility for Vistra Corp. (VST) is 14.36%, while Palvella Therapeutics, Inc (PVLA) has a volatility of 19.68%. This indicates that VST experiences smaller price fluctuations and is considered to be less risky than PVLA based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VST	PVLA	Difference
Volatility (1M) Calculated over the trailing 1-month period	14.36%	19.68%	-5.32%
Volatility (6M) Calculated over the trailing 6-month period	36.88%	61.91%	-25.03%
Volatility (1Y) Calculated over the trailing 1-year period	48.93%	80.85%	-31.92%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	48.04%	82.11%	-34.07%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	42.22%	82.11%	-39.89%

Dividends

VST vs. PVLA - Dividend Comparison

VST's dividend yield for the trailing twelve months is around 0.56%, while PVLA has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
PVLA Palvella Therapeutics, Inc	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
VST Vistra Corp.	0.56%	0.56%	0.63%	2.13%	3.12%	2.64%	2.75%	2.17%	0.00%	0.00%	14.97%

Financials

Frequently Asked Questions

Can I hold both VST and PVLA in my portfolio?

VST and PVLA have a correlation of 0.12, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VST or PVLA?

PVLA has higher volatility (19.68%) compared to VST (14.36%). In terms of maximum drawdown, VST dropped -53.32% vs PVLA's -31.48%.

Which has better risk-adjusted returns?

PVLA currently has the higher Sharpe Ratio (5.32 vs -0.26), 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.