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.

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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

Acacia Research Corporation - Common Stock (NQ:ACTG)

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Historical Prices

Date Open High Low Close Volume Change (%)
Oct 10, 2025 3.450 3.490 3.320 3.360 174,451 -0.08(-2.33%)
Oct 09, 2025 3.400 3.486 3.400 3.440 159,545 +0.04(+1.18%)
Oct 08, 2025 3.370 3.430 3.356 3.400 96,183 +0.04(+1.19%)
Oct 07, 2025 3.350 3.390 3.340 3.360 76,286 +0.01(+0.30%)
Oct 06, 2025 3.320 3.365 3.297 3.350 128,435 +0.06(+1.82%)
Oct 03, 2025 3.220 3.340 3.220 3.290 93,647 +0.09(+2.81%)
Oct 02, 2025 3.280 3.291 3.180 3.200 119,216 -0.07(-2.14%)
Oct 01, 2025 3.230 3.330 3.205 3.270 154,285 +0.02(+0.62%)
Sep 30, 2025 3.240 3.290 3.155 3.250 163,226 +0.00(+0.00%)
Sep 29, 2025 3.300 3.310 3.240 3.250 109,361 -0.04(-1.22%)
Sep 26, 2025 3.250 3.316 3.250 3.290 96,493 +0.04(+1.23%)
Sep 25, 2025 3.300 3.300 3.230 3.250 102,586 -0.09(-2.69%)
Sep 24, 2025 3.300 3.350 3.280 3.340 102,380 +0.06(+1.83%)
Sep 23, 2025 3.350 3.380 3.250 3.280 106,179 -0.04(-1.20%)
Sep 22, 2025 3.300 3.355 3.225 3.320 182,431 +0.01(+0.30%)
Sep 19, 2025 3.400 3.440 3.270 3.310 386,702 -0.09(-2.65%)
Sep 18, 2025 3.320 3.440 3.320 3.400 185,754 +0.09(+2.72%)
Sep 17, 2025 3.400 3.459 3.295 3.310 157,285 -0.09(-2.65%)
Sep 16, 2025 3.370 3.430 3.360 3.400 212,967 +0.04(+1.19%)
Sep 15, 2025 3.310 3.420 3.290 3.360 233,936 +0.07(+2.13%)
Sep 12, 2025 3.270 3.350 3.250 3.290 584,352 +0.03(+0.92%)
Sep 11, 2025 3.130 3.290 3.130 3.260 157,598 +0.11(+3.49%)
Sep 10, 2025 3.190 3.230 3.145 3.150 134,587 -0.05(-1.56%)
Sep 09, 2025 3.360 3.380 3.200 3.200 198,525 -0.18(-5.33%)
Sep 08, 2025 3.320 3.400 3.320 3.380 242,959 +0.08(+2.42%)
Sep 05, 2025 3.340 3.370 3.286 3.300 87,964 -0.04(-1.20%)
Sep 04, 2025 3.230 3.350 3.205 3.340 141,293 +0.10(+3.09%)
Sep 03, 2025 3.310 3.353 3.230 3.240 174,290 -0.09(-2.70%)
Sep 02, 2025 3.360 3.505 3.320 3.330 220,973 -0.08(-2.35%)
Aug 29, 2025 3.280 3.440 3.240 3.410 285,134 +0.13(+3.96%)
Aug 28, 2025 3.310 3.350 3.240 3.280 109,096 -0.01(-0.30%)
Aug 27, 2025 3.290 3.320 3.256 3.290 109,085 +0.00(+0.00%)
Aug 26, 2025 3.240 3.329 3.240 3.290 107,755 +0.04(+1.23%)
Aug 25, 2025 3.330 3.330 3.250 3.250 115,214 -0.09(-2.69%)
Aug 22, 2025 3.260 3.390 3.260 3.340 240,352 +0.08(+2.45%)
Aug 21, 2025 3.240 3.270 3.170 3.260 159,294 +0.02(+0.62%)
Aug 20, 2025 3.270 3.287 3.210 3.240 106,050 -0.01(-0.31%)
Aug 19, 2025 3.310 3.345 3.205 3.250 170,826 -0.05(-1.52%)
Aug 18, 2025 3.330 3.388 3.300 3.300 140,631 -0.04(-1.20%)
Aug 15, 2025 3.380 3.405 3.340 3.340 376,788 -0.03(-0.89%)
Aug 14, 2025 3.410 3.460 3.370 3.370 288,693 -0.07(-2.03%)
Aug 13, 2025 3.340 3.500 3.320 3.440 285,254 +0.10(+2.99%)
Aug 12, 2025 3.320 3.490 3.280 3.340 414,511 +0.05(+1.52%)
Aug 11, 2025 3.250 3.290 3.240 3.290 175,015 +0.04(+1.23%)
Aug 08, 2025 3.350 3.360 3.225 3.250 282,295 -0.08(-2.26%)
Aug 07, 2025 3.280 3.350 3.180 3.325 310,854 +0.07(+1.99%)
Aug 06, 2025 3.570 3.690 3.120 3.260 716,333 -0.33(-9.19%)
Aug 05, 2025 3.560 3.650 3.555 3.590 127,516 +0.03(+0.84%)
Aug 04, 2025 3.430 3.560 3.430 3.560 138,774 +0.13(+3.79%)
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