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Read two to four stocks on the same scale — return, valuation and volatility in one table.

SelectedToday1M Return

PDEXPro-Dex Inc+ 18.88%+ 25.34%
BIAFbioAffinity Technologies Inc+ 19.48%+ 70.41%
Partial Period · Aug 3, 2026 — Sep 4, 2026
SNDKSandisk Corp+ 11.90%+ 35.09%
Partial Period · Aug 3, 2026 — Sep 4, 2026

Period Return

Each series is converted to a percentage of its own starting point, so all of them begin at zero. What is compared is the return over the period, not price levels.

PDEX+ 25.3%BIAF+ 70.4%SNDK+ 35.1%Tap or hover the chart for values along the way

Metric	PDEXPro-Dex Inc	BIAFbioAffinity Technologies Inc	SNDKSandisk Corp
Return
Last Price	73.41	15.27	1,740.00
Daily Change	+ 18.88%	+ 19.48%	+ 11.90%
Period ReturnPast Month	+ 25.34%	+ 70.41%Aug 3, 2026 — Sep 4, 2026	+ 35.09%Aug 3, 2026 — Sep 4, 2026
Valuation
Market Cap	$234 M	$3.24 M	$258 B
P/E Ratio	20.25	—	23.87
Dividend Yield	—	—	—
Net MarginTrailing 12M	16.1%	257.3%	56.5%
Risk
Beta	0.11	-1.36	3.88
52-Week Range	23.47 — $69.86	4.56 — $202.50	55.55 — $2,354.39
Company
Sector	—	—	Information Technology
Industry	Health Care	Biotechnology	Technology

Company

PDEXHealth Care
BIAFBiotechnology
SNDKInformation Technology · Technology

FinnhubUpdated 23:00

To Understand This

P/E and the Valuation RatiosYou can't tell whether a stock is cheap or expensive by looking at its price.Diversification: How Many Baskets Are Enough?Owning ten different stocks is not the same as owning ten different risks.