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

Classover Holdings, Inc. - Warrants (NQ:KIDZW)

0.0788 -0.0001 (-0.13%)
Streaming Delayed Price Updated: 2:26 PM EDT, Oct 20, 2025 Add to My Watchlist

Historical Prices

Date Open High Low Close Volume Change (%)
Oct 20, 2025 0.0794 0.0795 0.0719 0.0788 55,259 -0.00(-0.13%)
Oct 17, 2025 0.0750 0.0797 0.0600 0.0789 35,863 +0.02(+31.50%)
Oct 16, 2025 0.0861 0.0861 0.0600 0.0600 223,221 -0.02(-27.62%)
Oct 15, 2025 0.0900 0.0900 0.0800 0.0829 8,730 +0.00(+4.15%)
Oct 14, 2025 0.0999 0.0999 0.0796 0.0796 21,145 -0.01(-6.35%)
Oct 13, 2025 0.0805 0.0999 0.0800 0.0850 31,723 +0.00(+1.31%)
Oct 10, 2025 0.0851 0.0900 0.0800 0.0839 93,769 -0.01(-6.78%)
Oct 09, 2025 0.0900 0.1009 0.0856 0.0900 25,506 -0.01(-8.07%)
Oct 08, 2025 0.0987 0.1012 0.0850 0.0979 30,281 +0.01(+8.78%)
Oct 07, 2025 0.0992 0.0992 0.0859 0.0900 7,865 -0.00(-3.74%)
Oct 06, 2025 0.1000 0.1194 0.0900 0.0935 9,959 -0.01(-6.50%)
Oct 03, 2025 0.1298 0.1298 0.1000 0.1000 121,411 +0.01(+11.11%)
Oct 02, 2025 0.0905 0.0947 0.0900 0.0900 18,447 +0.00(+0.00%)
Oct 01, 2025 0.1000 0.1030 0.0802 0.0900 45,001 +0.01(+12.22%)
Sep 30, 2025 0.0997 0.0997 0.0802 0.0802 11,191 -0.01(-10.89%)
Sep 29, 2025 0.1000 0.1000 0.0900 0.0900 1,220 +0.00(+2.04%)
Sep 26, 2025 0.0800 0.1200 0.0800 0.0882 94,495 +0.00(+2.08%)
Sep 25, 2025 0.1001 0.1147 0.0815 0.0864 95,818 -0.03(-24.87%)
Sep 24, 2025 0.1100 0.1418 0.1002 0.1150 34,354 -0.00(-1.63%)
Sep 23, 2025 0.1201 0.1288 0.1100 0.1169 4,206 -0.00(-2.58%)
Sep 22, 2025 0.1100 0.1275 0.1001 0.1200 17,202 -0.01(-6.10%)
Sep 19, 2025 0.1202 0.1289 0.1060 0.1278 18,078 +0.00(+2.24%)
Sep 18, 2025 0.1196 0.1297 0.1010 0.1250 65,390 +0.01(+4.25%)
Sep 17, 2025 0.1300 0.1347 0.0900 0.1199 97,852 -0.01(-7.70%)
Sep 16, 2025 0.1360 0.1373 0.1101 0.1299 28,173 -0.01(-4.63%)
Sep 15, 2025 0.1300 0.1500 0.1000 0.1362 62,843 +0.00(+0.74%)
Sep 12, 2025 0.1639 0.1639 0.1300 0.1352 32,653 -0.03(-19.24%)
Sep 11, 2025 0.1744 0.1744 0.1251 0.1674 170,649 -0.01(-4.07%)
Sep 10, 2025 0.1100 0.1880 0.1022 0.1745 372,624 +0.06(+58.78%)
Sep 09, 2025 0.0988 0.1200 0.0842 0.1099 243,634 +0.02(+24.32%)
Sep 08, 2025 0.0759 0.0950 0.0759 0.0884 88,230 -0.01(-10.44%)
Sep 04, 2025 0.0987 1 +0.00(+1.75%)
Sep 03, 2025 0.1000 0.1016 0.0899 0.0970 59,240 -0.00(-3.19%)
Sep 02, 2025 0.0999 0.1088 0.0899 0.1002 151,555 +0.02(+17.74%)
Aug 28, 2025 0.0851 0 -0.01(-6.48%)
Aug 27, 2025 0.0999 0.1047 0.0850 0.0910 15,700 -0.01(-9.99%)
Aug 26, 2025 0.0702 0.1050 0.0702 0.1011 85,441 +0.00(+1.10%)
Aug 25, 2025 0.0950 0.1000 0.0650 0.1000 58,657 +0.00(+5.15%)
Aug 22, 2025 0.0875 0.1000 0.0750 0.0951 19,959 +0.01(+5.67%)
Aug 21, 2025 0.0998 0.1000 0.0705 0.0900 76,349 -0.01(-10.00%)
Aug 19, 2025 0.1000 0 +0.01(+13.77%)
Aug 18, 2025 0.1000 0.1000 0.0700 0.0879 9,575 -0.00(-2.22%)
Aug 15, 2025 0.0830 0.0900 0.0731 0.0899 10,953 +0.00(+2.74%)
Aug 14, 2025 0.0800 0.0900 0.0750 0.0875 30,728 -0.01(-12.50%)
Aug 13, 2025 0.0900 0.1000 0.0800 0.1000 10,014 +0.01(+5.37%)
Aug 12, 2025 0.1039 0.1100 0.0650 0.0949 26,740 -0.01(-13.57%)
Aug 11, 2025 0.0998 0.1200 0.0787 0.1098 25,904 +0.02(+24.77%)
Aug 08, 2025 0.0897 0.1000 0.0827 0.0880 7,513 -0.00(-2.11%)
Aug 07, 2025 0.0800 0.0899 0.0601 0.0899 11,782 +0.01(+12.37%)
Aug 06, 2025 0.0900 0.0900 0.0651 0.0800 53,699 +0.01(+13.48%)
Aug 05, 2025 0.0801 0.1100 0.0600 0.0705 30,236 -0.02(-19.80%)
Aug 04, 2025 0.1150 0.1150 0.0672 0.0879 71,289 +0.01(+9.88%)
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 Privacy Policy and Terms Of Service.