Allegro MicroSystems, Inc. (ALGM)
NASDAQ: ALGM · Real-Time Price · USD
44.33
+2.68 (6.43%)
At close: May 20, 2026, 4:00 PM EDT
43.51
-0.82 (-1.85%)
Pre-market: May 21, 2026, 9:16 AM EDT

Allegro MicroSystems Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
May 20, 202642.2744.5741.2544.3344.336.43%2,444,518
May 19, 202640.1041.8439.5741.6541.650.73%1,918,879
May 18, 202642.8543.7540.6741.3541.35-4.06%2,353,112
May 15, 202643.5843.7942.3443.1043.10-4.16%3,526,125
May 14, 202646.0646.1444.8444.9744.97-2.18%1,989,024
May 13, 202647.6647.7345.4445.9745.970.22%2,104,970
May 12, 202647.2647.6243.3845.8745.87-5.21%3,507,461
May 11, 202648.8749.0246.1548.3948.39-1.14%3,466,848
May 8, 202649.1749.1747.2648.9548.952.13%2,540,502
May 7, 202643.9049.4942.0047.9347.93-6.70%5,318,787
May 6, 202650.2551.4049.5451.3751.373.40%3,575,439
May 5, 202650.2550.3148.7349.6849.680.40%2,970,246
May 4, 202649.4350.1948.7449.4849.481.02%2,283,943
May 1, 202647.7149.1946.8248.9848.980.99%2,473,290
Apr 30, 202644.6448.6044.2248.5048.5010.05%3,475,146
Apr 29, 202642.1944.4142.1944.0744.077.17%2,696,012
Apr 28, 202641.7742.9740.9741.1241.12-5.41%2,405,962
Apr 27, 202644.1344.5042.2843.4743.47-1.50%1,794,425
Apr 24, 202645.0645.0943.6544.1344.131.19%1,945,062
Apr 23, 202644.0745.3943.0443.6143.613.17%2,842,852
Apr 22, 202642.2942.6040.9442.2742.272.40%1,742,926
Apr 21, 202640.8542.0240.8441.2841.281.55%1,712,685
Apr 20, 202640.0540.6939.7540.6540.651.62%1,690,977
Apr 17, 202639.0240.6138.9040.0040.004.66%1,568,835
Apr 16, 202637.4438.3337.2038.2238.222.60%1,554,038
Apr 15, 202638.3838.4937.0037.2537.25-2.67%1,387,843
Apr 14, 202638.5438.7237.7738.2738.270.60%1,052,904
Apr 13, 202636.9238.6336.8238.0438.041.44%1,581,980
Apr 10, 202637.6638.7537.4437.5037.501.30%1,490,717
Apr 9, 202635.8037.0535.8037.0237.023.21%1,867,269
Apr 8, 202636.3336.7535.2235.8735.877.78%2,886,216
Apr 7, 202632.5633.4832.5633.2833.281.43%1,896,609
Apr 6, 202632.6633.5932.2832.8132.810.64%1,087,936
Apr 2, 202631.6833.8331.5932.6032.60-2.10%1,313,613
Apr 1, 202632.0434.0131.9833.3033.305.61%2,279,305
Mar 31, 202629.4231.6329.2531.5331.5312.45%1,878,312
Mar 30, 202630.5030.6127.6528.0428.04-6.91%2,291,024
Mar 27, 202630.7631.2530.0830.1230.12-3.55%1,412,038
Mar 26, 202632.8532.8530.9731.2331.23-4.29%1,306,146
Mar 25, 202633.1133.3032.4832.6332.630.15%1,440,271
Mar 24, 202631.2733.3531.2332.5832.582.65%1,680,760
Mar 23, 202631.0031.9830.6731.7431.745.98%1,593,192
Mar 20, 202630.8831.0429.5629.9529.95-3.11%2,351,376
Mar 19, 202630.4531.3429.8030.9130.91-1.94%2,197,898
Mar 18, 202632.1432.7031.4131.5231.52-1.68%2,114,024
Mar 17, 202631.4332.8831.1432.0632.062.17%2,615,795
Mar 16, 202631.8332.1131.3531.3831.380.80%1,421,508
Mar 13, 202631.8632.1030.5931.1331.13-0.10%1,156,590
Mar 12, 202632.2632.5131.0931.1631.16-5.75%1,383,376
Mar 11, 202633.1133.3832.7233.0633.06-0.33%1,112,359