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

Ballard Power Systems, Inc. - Common Shares (TSX:BLDP)

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Historical Prices

Date Open High Low Close Volume Change (%)
Oct 03, 2025 4.150 5.010 4.150 4.920 3,356,077 +0.90(+22.39%)
Oct 02, 2025 4.170 4.170 3.970 4.020 650,231 -0.09(-2.19%)
Oct 01, 2025 3.790 4.120 3.780 4.110 1,208,414 +0.34(+9.02%)
Sep 30, 2025 3.740 3.800 3.680 3.770 907,301 -0.06(-1.57%)
Sep 29, 2025 3.840 3.910 3.730 3.830 835,565 +0.00(+0.00%)
Sep 26, 2025 4.080 4.110 3.820 3.830 878,342 -0.24(-5.90%)
Sep 25, 2025 3.930 4.130 3.850 4.070 1,005,159 -0.07(-1.69%)
Sep 24, 2025 4.160 4.370 4.070 4.140 1,325,832 +0.09(+2.22%)
Sep 23, 2025 4.350 4.380 4.020 4.050 2,527,156 +0.08(+2.02%)
Sep 22, 2025 3.800 3.980 3.670 3.970 1,377,903 +0.18(+4.75%)
Sep 19, 2025 3.660 3.850 3.650 3.790 1,530,536 +0.18(+4.99%)
Sep 18, 2025 3.450 3.640 3.400 3.610 1,236,551 +0.14(+4.03%)
Sep 17, 2025 3.050 3.510 3.020 3.470 2,394,561 +0.43(+14.14%)
Sep 16, 2025 3.000 3.040 2.940 3.040 609,757 +0.04(+1.33%)
Sep 15, 2025 2.890 3.000 2.890 3.000 666,694 +0.12(+4.17%)
Sep 12, 2025 2.810 2.880 2.740 2.880 614,134 +0.06(+2.13%)
Sep 11, 2025 2.680 2.930 2.650 2.820 1,099,190 +0.14(+5.22%)
Sep 10, 2025 2.650 2.810 2.620 2.680 935,955 +0.05(+1.90%)
Sep 09, 2025 2.670 2.670 2.580 2.630 449,865 -0.04(-1.50%)
Sep 08, 2025 2.780 2.800 2.660 2.670 277,546 -0.08(-2.91%)
Sep 05, 2025 2.540 2.760 2.540 2.750 994,534 +0.18(+7.00%)
Sep 04, 2025 2.650 2.650 2.530 2.570 273,315 -0.06(-2.28%)
Sep 03, 2025 2.610 2.680 2.570 2.630 544,520 +0.05(+1.94%)
Sep 02, 2025 2.690 2.720 2.570 2.580 718,377 -0.17(-6.18%)
Aug 29, 2025 2.750 0 -0.06(-2.14%)
Aug 28, 2025 2.810 2.830 2.770 2.810 278,529 +0.02(+0.72%)
Aug 27, 2025 2.820 2.830 2.760 2.790 302,590 -0.07(-2.45%)
Aug 26, 2025 2.800 2.900 2.780 2.860 743,649 +0.07(+2.51%)
Aug 25, 2025 2.760 2.830 2.730 2.790 394,970 +0.00(+0.00%)
Aug 22, 2025 2.650 2.800 2.640 2.790 641,232 +0.16(+6.08%)
Aug 21, 2025 2.610 2.640 2.540 2.630 380,475 -0.01(-0.38%)
Aug 20, 2025 2.650 2.680 2.600 2.640 523,150 -0.05(-1.86%)
Aug 19, 2025 2.790 2.790 2.670 2.690 413,757 -0.07(-2.54%)
Aug 18, 2025 2.750 2.800 2.640 2.760 674,195 +0.00(+0.00%)
Aug 15, 2025 2.560 2.830 2.510 2.760 1,004,785 +0.22(+8.66%)
Aug 14, 2025 2.510 2.550 2.450 2.540 441,330 -0.01(-0.39%)
Aug 13, 2025 2.400 2.580 2.390 2.550 898,434 +0.17(+7.14%)
Aug 12, 2025 2.500 2.500 2.340 2.380 1,024,691 -0.10(-4.03%)
Aug 11, 2025 2.420 2.530 2.340 2.480 1,120,618 -0.02(-0.80%)
Aug 08, 2025 2.580 2.580 2.480 2.500 260,616 -0.04(-1.57%)
Aug 07, 2025 2.500 2.640 2.500 2.540 344,866 +0.04(+1.60%)
Aug 06, 2025 2.570 2.600 2.480 2.500 386,371 -0.07(-2.72%)
Aug 05, 2025 2.530 2.600 2.490 2.570 332,884 +0.08(+3.21%)
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