Laser Focus World is an industry bedrock—first published in 1965 and still going strong. We publish original articles about cutting-edge advances in lasers, optics, photonics, sensors, and quantum technologies, as well as test and measurement, and the shift currently underway to usher in the photonic integrated circuits, optical interconnects, and copackaged electronics and photonics to deliver the speed and efficiency essential for data centers of the future.

Our 80,000 qualified print subscribers—and 130,000 12-month engaged online audience—trust us to dive in and provide original journalism you won’t find elsewhere covering key emerging areas such as laser-driven inertial confinement fusion, lasers in space, integrated photonics, chipscale lasers, LiDAR, metasurfaces, high-energy laser weaponry, photonic crystals, and quantum computing/sensors/communications. We cover the innovations driving these markets.

Laser Focus World is part of Endeavor Business Media, a division of EndeavorB2B.

Laser Focus World Membership

Never miss any articles, videos, podcasts, or webinars by signing up for membership access to Laser Focus World online. You can manage your preferences all in one place—and provide our editorial team with your valued feedback.

Magazine Subscription

Can you subscribe to receive our print issue for free? Yes, you sure can!

Newsletter Subscription

Laser Focus World newsletter subscription is free to qualified professionals:

The Daily Beam

Showcases the newest content from Laser Focus World, including photonics- and optics-based applications, components, research, and trends. (Daily)

Product Watch

The latest in products within the photonics industry. (9x per year)

Bio & Life Sciences Product Watch

The latest in products within the biophotonics industry. (4x per year)

Laser Processing Product Watch

The latest in products within the laser processing industry. (3x per year)

Get Published!

If you’d like to write an article for us, reach out with a short pitch to Sally Cole Johnson: [email protected]. We love to hear from you.

Photonics Hot List

Laser Focus World produces a video newscast that gives a peek into what’s happening in the world of photonics.

Following the Photons: A Photonics Podcast

Following the Photons: A Photonics Podcast dives deep into the fascinating world of photonics. Our weekly episodes feature interviews and discussions with industry and research experts, providing valuable perspectives on the issues, technologies, and trends shaping the photonics community.

Editorial Advisory Board

  • Professor Andrea M. Armani, University of Southern California
  • Ruti Ben-Shlomi, Ph.D., LightSolver
  • James Butler, Ph.D., Hamamatsu
  • Natalie Fardian-Melamed, Ph.D., Columbia University
  • Justin Sigley, Ph.D., AmeriCOM
  • Professor Birgit Stiller, Max Planck Institute for the Science of Light, and Leibniz University of Hannover
  • Professor Stephen Sweeney, University of Glasgow
  • Mohan Wang, Ph.D., University of Oxford
  • Professor Xuchen Wang, Harbin Engineering University
  • Professor Stefan Witte, Delft University of Technology

3 Dawdling Stocks with Mounting Challenges

PTLO Cover Image

Low-volatility stocks may offer stability, but that often comes at the cost of slower growth and the upside potential of more dynamic companies.

Choosing the wrong investments can cause you to fall behind, which is why we started StockStory - to separate the winners from the losers. Keeping that in mind, here are three low-volatility stocks to steer clear of and a few better alternatives.

Portillo's (PTLO)

Rolling One-Year Beta: 0.68

Begun as a Chicago hot dog stand in 1963, Portillo’s (NASDAQ: PTLO) is a casual restaurant chain that serves Chicago-style hot dogs and beef sandwiches as well as fries and shakes.

Why Does PTLO Give Us Pause?

  1. Lagging same-store sales over the past two years suggest it might have to change its pricing and marketing strategy to stimulate demand
  2. Ability to fund investments or reward shareholders with increased buybacks or dividends is restricted by its weak free cash flow margin of -0.2% for the last two years
  3. High net-debt-to-EBITDA ratio of 6× could force the company to raise capital at unfavorable terms if market conditions deteriorate

At $11.35 per share, Portillo's trades at 31.3x forward P/E. Dive into our free research report to see why there are better opportunities than PTLO.

Array (ARRY)

Rolling One-Year Beta: 0.46

Going public in October 2020, Array (NASDAQ: ARRY) is a global manufacturer of ground-mounting tracking systems for utility and distributed generation solar energy projects.

Why Do We Pass on ARRY?

  1. Declining unit sales over the past two years indicate demand is soft and that the company may need to revise its strategy
  2. Cash burn makes us question whether it can achieve sustainable long-term growth
  3. Shrinking returns on capital from an already weak position reveal that neither previous nor ongoing investments are yielding the desired results

Array’s stock price of $5.54 implies a valuation ratio of 8.5x forward P/E. To fully understand why you should be careful with ARRY, check out our full research report (it’s free).

Brookdale (BKD)

Rolling One-Year Beta: 0.24

With a network of over 650 communities serving approximately 59,000 residents across 41 states, Brookdale Senior Living (NYSE: BKD) operates senior living communities across the United States, offering independent living, assisted living, memory care, and continuing care retirement communities.

Why Do We Think BKD Will Underperform?

  1. Customers postponed purchases of its products and services this cycle as its revenue declined by 4.8% annually over the last five years
  2. Performance over the past five years shows each sale was less profitable as its earnings per share dropped by 22.1% annually, worse than its revenue
  3. Unfavorable liquidity position could lead to additional equity financing that dilutes shareholders

Brookdale is trading at $6.41 per share, or 3.4x forward EV-to-EBITDA. Check out our free in-depth research report to learn more about why BKD doesn’t pass our bar.

Stocks We Like More

The market surged in 2024 and reached record highs after Donald Trump’s presidential victory in November, but questions about new economic policies are adding much uncertainty for 2025.

While the crowd speculates what might happen next, we’re homing in on the companies that can succeed regardless of the political or macroeconomic environment. Put yourself in the driver’s seat and build a durable portfolio by checking out our Top 6 Stocks for this week. This is a curated list of our High Quality stocks that have generated a market-beating return of 175% over the last five years.

Stocks that made our list in 2019 include now familiar names such as Nvidia (+2,183% between December 2019 and December 2024) as well as under-the-radar businesses like Sterling Infrastructure (+1,096% five-year return). Find your next big winner with StockStory today for free.

Stock Quote API & Stock News API supplied by www.cloudquote.io
Quotes delayed at least 20 minutes.
By accessing this page, you agree to the following
Privacy Policy and Terms Of Service.