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

Ampco-Pittsburgh Corporation Common Stock (NY:AP)

2.260 -0.010 (-0.44%)
Official Closing Price Updated: 6:30 PM EDT, Oct 7, 2025 Add to My Watchlist

Historical Prices

Date Open High Low Close Volume Change (%)
Oct 07, 2025 2.240 2.289 2.209 2.260 24,110 -0.01(-0.44%)
Oct 06, 2025 2.160 2.320 2.150 2.270 77,635 +0.05(+2.25%)
Oct 03, 2025 2.250 2.320 2.170 2.220 56,215 -0.07(-3.06%)
Oct 02, 2025 2.240 2.300 2.219 2.290 16,472 +0.04(+1.78%)
Oct 01, 2025 2.240 2.335 2.240 2.250 27,703 -0.04(-1.75%)
Sep 30, 2025 2.330 2.363 2.220 2.290 44,246 -0.08(-3.38%)
Sep 29, 2025 2.400 2.540 2.370 2.370 28,257 -0.05(-2.07%)
Sep 26, 2025 2.490 2.505 2.350 2.420 50,805 -0.08(-3.20%)
Sep 25, 2025 2.160 2.580 2.160 2.500 198,964 +0.34(+15.74%)
Sep 24, 2025 2.330 2.379 2.160 2.160 94,743 -0.17(-7.30%)
Sep 23, 2025 2.350 2.490 2.320 2.330 50,232 -0.06(-2.51%)
Sep 22, 2025 2.440 2.446 2.330 2.390 87,509 -0.07(-2.85%)
Sep 19, 2025 2.610 2.620 2.430 2.460 130,187 -0.10(-3.91%)
Sep 18, 2025 2.500 2.570 2.500 2.560 45,222 +0.06(+2.40%)
Sep 17, 2025 2.600 2.656 2.500 2.500 39,325 -0.10(-3.85%)
Sep 16, 2025 2.520 2.630 2.520 2.600 77,210 +0.07(+2.77%)
Sep 15, 2025 2.640 2.652 2.520 2.530 71,923 -0.11(-4.17%)
Sep 12, 2025 2.710 2.776 2.630 2.640 76,083 -0.04(-1.49%)
Sep 11, 2025 2.700 2.780 2.660 2.680 37,112 -0.01(-0.37%)
Sep 10, 2025 2.650 2.740 2.650 2.690 25,880 -0.01(-0.37%)
Sep 09, 2025 2.650 2.743 2.650 2.700 39,888 +0.00(+0.00%)
Sep 08, 2025 2.780 2.810 2.690 2.700 52,856 -0.05(-1.82%)
Sep 05, 2025 2.770 2.825 2.735 2.750 26,331 -0.05(-1.79%)
Sep 04, 2025 2.830 2.860 2.780 2.800 36,532 -0.08(-2.78%)
Sep 03, 2025 2.780 2.900 2.770 2.880 45,338 +0.12(+4.35%)
Sep 02, 2025 2.700 2.800 2.630 2.760 39,588 +0.04(+1.47%)
Aug 29, 2025 2.770 2.785 2.700 2.720 18,210 -0.10(-3.55%)
Aug 28, 2025 2.780 2.820 2.750 2.820 27,828 +0.06(+2.17%)
Aug 27, 2025 2.900 2.945 2.750 2.760 74,146 -0.16(-5.48%)
Aug 26, 2025 3.010 3.020 2.867 2.920 20,560 -0.03(-1.02%)
Aug 25, 2025 2.990 3.005 2.907 2.950 49,626 -0.04(-1.34%)
Aug 22, 2025 2.800 3.070 2.800 2.990 48,619 +0.19(+6.79%)
Aug 21, 2025 2.770 2.875 2.740 2.800 30,340 -0.07(-2.44%)
Aug 20, 2025 2.790 2.890 2.740 2.870 33,721 +0.04(+1.41%)
Aug 19, 2025 2.820 2.890 2.780 2.830 55,203 -0.06(-2.08%)
Aug 18, 2025 2.860 2.930 2.750 2.890 86,740 -0.05(-1.70%)
Aug 15, 2025 3.120 3.120 2.910 2.940 78,899 -0.11(-3.61%)
Aug 14, 2025 3.200 3.249 3.010 3.050 64,402 -0.16(-4.98%)
Aug 13, 2025 3.450 3.450 3.160 3.210 74,464 -0.19(-5.59%)
Aug 12, 2025 3.360 3.590 3.333 3.400 48,601 -0.01(-0.29%)
Aug 11, 2025 3.350 3.440 3.200 3.410 62,570 -0.01(-0.29%)
Aug 08, 2025 3.470 3.470 3.286 3.420 14,002 -0.02(-0.58%)
Aug 07, 2025 3.590 3.590 3.390 3.440 29,945 -0.04(-1.15%)
Aug 06, 2025 3.450 3.531 3.390 3.480 37,364 +0.07(+2.05%)
Aug 05, 2025 3.450 3.450 3.240 3.410 21,222 +0.06(+1.79%)
Aug 04, 2025 3.190 3.400 3.070 3.350 68,384 +0.25(+8.06%)
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