Here are three stocks with buy rank and strong momentum characteristics for investors to consider today, August 21:

Lumentum Holdings Inc. (LITE Quick QuoteLITE - Free Report) : This optical and photonic products company has a Zacks Rank #1 and witnessed the Zacks Consensus Estimate for its current year earnings increasing 5.1% over the last 60 days.

Lumentum’s shares gained 30.4% over the last six months compared with the S&P 500’s advance of 11.8%. The company possesses a Momentum Score  of A.

Onto Innovation Inc. (ONTO Quick QuoteONTO - Free Report) : This manufacturer of process control tools for optical metrology has a Zacks Rank #1 and witnessed the Zacks Consensus Estimate for its current year earnings increasing 10.4% over the last 60 days.

Onto’s shares gained 13.9% over the last three months compared with the S&P 500’s advance of 2.3%. The company possesses a Momentum Score of A.

Assembly Biosciences, Inc. (ASMB Quick QuoteASMB - Free Report) : This clinical-stage biotechnology company has a Zacks Rank #1 and witnessed the Zacks Consensus Estimate for its current year earnings increasing 20% over the last 60 days.

Assembly’s shares gained 18.3% over the last three months compared with the S&P 500’s advance of 2.3%. The company possesses a Momentum Score of A.

You can see the complete list of today’s Zacks #1 Rank (Strong Buy) stocks here.

Learn more about the Momentum score and how it is calculated here.