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

SelectedToday1M Return

SMCISuper Micro Computer Inc+ 4.54%+ 38.23%
Partial Period · Aug 3, 2026 — Sep 4, 2026
COHRCoherent Corp+ 6.60%+ 7.22%
WDCWestern Digital Corp—− 11.33%
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.

SMCI+ 38.2%COHR+ 7.2%WDC− 11.3%Tap or hover the chart for values along the way

Metric	SMCISuper Micro Computer Inc	COHRCoherent Corp	WDCWestern Digital Corp
Return
Last Price	39.59	281.86	—
Daily Change	+ 4.54%	+ 6.60%	—
Period ReturnPast Month	+ 38.23%Aug 3, 2026 — Sep 4, 2026	+ 7.22%	− 11.33%Aug 3, 2026 — Sep 4, 2026
Valuation
Market Cap	$25.6 B	$55.1 B	$161 B
P/E Ratio	12.37	68.53	—
Dividend Yield	—	—	0.12%
Net MarginTrailing 12M	5.7%	11.3%	73.0%
Risk
Beta	2.19	2.18	2.27
52-Week Range	19.48 — $58.78	90.00 — $440.00	85.92 — $799.87
Company
Sector	Information Technology	Information Technology	Information Technology
Industry	Technology	Electrical Equipment	Technology

Company

SMCIInformation Technology · Technology
COHRInformation Technology · Electrical Equipment
WDCInformation 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.