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Allegro Microsystems Inc (ALGM) — Price History

As of 2026-10-30 — refreshed nightly from the Closelooknet data lake. Diary readings, not advice.

Full Chart ↗

The Closelooknet read

  • Closelooknet score: 36 out of 100 (momentum 8 · quality 34 · valuation 15), as of 2026-10-31.
  • Signal: Down 6.6% at the close — Already below its 50-day; one of the day's sharpest drops. (as of 2026-10-29)
  • Trend: Allegro Microsystems Inc trades 6.2% below its 50-day and 19.1% below its 200-day moving average. (as of 2026-10-29)
  • Index seat: Rubin Build-Out 100

Allegro Microsystems designs sensor and power integrated circuits, including magnetic position sensors, motor drivers and isolated gate drivers, used to control motion and manage power in electromechanical systems. It sells mainly to automotive and industrial customers, and increasingly to builders of data-centre power systems, robotics and energy infrastructure.

The full read — the desk's view, the earnings record, peers and the company snapshot — is on the ALGM overview; the trend detail on the technical tab. Agents can buy the score depth per call over HTTP 402 — see the catalogue. Research diary readings, not advice.

Daily prices

DateOpenHighLowCloseChg %Volume
2026-10-3030.7131.6530.0130.53-7.57%4,999,559
2026-10-2933.5534.0031.0333.03-6.62%5,973,600
2026-10-2834.1235.6233.4635.37+4.09%6,237,200
2026-10-2732.8234.6132.6033.98+5.14%3,485,400
2026-10-2631.8532.6931.0432.32+2.67%4,027,500
2026-10-2331.4231.8730.6331.48-0.66%5,710,200
2026-10-2233.4233.5831.2431.69-8.17%2,455,600
2026-10-2134.8535.2134.0834.51+1.77%2,536,200
2026-10-2032.4634.3332.1233.91+2.23%2,424,700
2026-10-1932.8833.6032.0633.17+4.90%2,783,000
2026-10-1631.8032.9631.4331.62-2.29%2,595,100
2026-10-1531.0732.5430.5132.36+0.43%3,190,700
2026-10-1432.8833.4931.7232.22-4.25%2,405,800
2026-10-1332.8033.7232.4133.65-0.41%2,985,000
2026-10-1235.0035.0033.7033.79-5.00%2,723,000
2026-10-0936.8336.8335.0735.57-1.93%2,550,700
2026-10-0836.5637.0134.9536.27-2.05%2,574,000
2026-10-0737.7037.9536.7937.03-4.46%2,410,400
2026-10-0638.9039.2937.9838.76+0.78%3,286,100
2026-10-0539.4439.7137.8538.46-2.71%3,483,200
2026-10-0238.1540.0338.1539.53+8.66%5,905,900
2026-10-0136.3536.8635.6836.38+0.08%2,793,300
2026-09-3036.6437.0536.1536.35-0.68%2,098,200
2026-09-2937.8638.0036.2136.60-0.92%2,413,800
2026-09-2836.7437.4535.7436.94+0.49%2,747,400
2026-09-2535.2736.8835.1336.76+4.64%2,553,100
2026-09-2434.3235.2033.9535.13+0.06%2,462,700
2026-09-2335.4835.9534.8535.11-1.13%2,520,400
2026-09-2235.4336.3835.1335.51+0.03%4,594,200
2026-09-2135.0135.8933.8535.50+4.11%2,563,400
2026-09-1833.5734.1733.3234.10+2.99%3,177,900
2026-09-1734.4434.5332.9933.11+0.27%1,961,100
2026-09-1634.1234.3532.6733.02-0.72%1,704,100
2026-09-1534.4234.4932.7833.26-1.74%2,258,700
2026-09-1434.0335.1333.6033.85-6.77%2,062,100
2026-09-1135.8636.8035.5636.31+2.95%1,848,800
2026-09-1034.7235.8334.5535.27-1.59%1,591,900
2026-09-0935.9936.8935.7635.84-1.73%1,867,900
2026-09-0837.5437.6736.2536.47-0.38%2,618,100
2026-09-0436.1837.2835.9836.61+2.95%2,508,600
2026-09-0334.9035.7734.0235.56+0.25%2,463,400
2026-09-0235.6736.4135.0235.47+0.00%1,607,000
2026-09-0135.3935.7634.5035.47-2.15%1,682,100
2026-08-3136.0036.5035.4136.25+1.34%2,280,800
2026-08-2837.5137.5135.5635.77-4.84%2,145,800
2026-08-2737.8038.2636.8437.59+1.90%1,681,600
2026-08-2637.5138.1536.5036.89-1.47%1,872,800
2026-08-2536.8337.4536.4437.44+5.08%2,782,600
2026-08-2436.1536.5935.3435.63-4.12%2,131,500
2026-08-2137.6337.9836.4937.16-0.08%2,342,300
2026-08-2038.2138.7936.6137.19-3.02%2,220,600
2026-08-1940.0040.3037.4938.35-2.64%2,503,400
2026-08-1842.5443.0539.3439.39-10.98%2,581,600
2026-08-1745.3246.5844.0244.25-0.32%1,538,000
2026-08-1444.0645.0143.5344.39+0.59%982,500
2026-08-1342.7845.6742.5944.13+3.91%2,164,600
2026-08-1244.5744.5742.3642.47-0.12%1,088,600
2026-08-1143.4744.0542.3142.52+0.14%1,126,800
2026-08-1044.3944.8742.3742.46-2.99%1,733,200
2026-08-0743.8044.5042.7243.77+3.10%1,607,000
2026-08-0640.8444.0540.2042.45+1.57%1,828,300
2026-08-0542.0243.5641.6141.80-2.45%1,727,200
2026-08-0444.0044.4942.1942.85+3.20%2,726,400
2026-08-0339.6942.0938.6041.52+0.05%2,506,000
2026-07-3142.2743.3540.7641.50+0.12%3,763,900
2026-07-3042.3142.9238.1541.45-1.80%6,152,700
2026-07-2943.7044.9441.7742.21-5.19%3,309,500
2026-07-2843.5044.7342.0144.52-4.87%2,320,400
2026-07-2746.9647.6244.0146.80+1.67%2,383,500
2026-07-2450.0050.0045.5646.03-8.07%1,574,100
2026-07-2349.1251.8849.0250.07+0.40%3,114,200
2026-07-2247.8450.6547.8449.87+1.05%1,190,000
2026-07-2149.2549.9647.7049.35+6.45%1,292,600
2026-07-2046.2948.5046.0046.36-0.26%1,928,000
2026-07-1744.2848.0744.1346.48-1.36%1,588,700
2026-07-1648.0048.8646.4647.12-5.82%1,994,700
2026-07-1553.1053.3547.9650.03-4.38%2,018,100
2026-07-1454.2154.4051.1952.32+2.88%1,838,800
2026-07-1352.2152.6350.1650.85-7.32%1,561,200
2026-07-1055.9956.0053.4854.87-4.37%2,326,600
2026-07-0954.4058.4854.4057.38+11.49%4,709,900
2026-07-0851.0652.5249.6051.47-0.16%3,470,400
2026-07-0752.9753.7650.4751.55-8.86%3,846,200
2026-07-0657.0762.0056.0056.56+1.94%4,571,600
2026-07-0263.3863.7752.8855.48-12.21%4,700,300
2026-07-0166.8467.9063.1663.20-9.22%3,843,600
2026-06-3066.1071.7764.8069.62+4.90%4,379,500
2026-06-2958.0267.4157.3066.37+14.65%6,986,500
2026-06-2657.3460.3856.5057.89-3.77%12,165,500
2026-06-2558.4160.8055.6560.16+8.55%3,602,900
2026-06-2455.7356.7954.1855.42-0.18%2,614,900
2026-06-2356.8058.4655.4955.52-9.84%3,406,700
2026-06-2261.6761.6758.1361.58+4.37%3,464,000
2026-06-1857.2059.5556.2959.00+9.30%4,705,500
2026-06-1755.4457.8853.2553.98+1.29%4,039,700
2026-06-1654.9158.1353.2653.29-3.11%3,534,600
2026-06-1552.8055.4552.5355.00+9.12%2,663,100
2026-06-1247.9650.4647.4750.41+5.10%1,621,400
2026-06-1145.8847.9845.4547.96+7.68%1,424,800
2026-06-1045.6847.0544.0044.54-4.48%1,598,800
2026-06-0949.2250.0043.2746.63-3.24%1,811,000
2026-06-0847.8748.2446.4348.19+3.88%2,070,500
2026-06-0551.5051.7546.1046.39-13.48%2,137,400
2026-06-0451.0254.4050.0053.62+0.96%2,090,800
2026-06-0350.3354.1049.0253.11+5.52%2,881,800
2026-06-0248.6450.7448.4050.33+6.79%2,339,300
2026-06-0147.2347.5946.0147.13-1.55%2,144,100
2026-05-2951.2652.8047.3647.87-6.32%3,650,300
2026-05-2849.5751.2347.7851.10+4.29%2,035,500
2026-05-2751.5951.6648.7549.00-3.47%1,994,600
2026-05-2647.8051.3547.1550.76+10.47%3,012,100
2026-05-2245.3846.1545.1145.95+2.80%1,943,900
2026-05-2143.7445.1443.6044.70+0.83%1,786,200
2026-05-2042.2744.5741.2544.33+6.43%2,462,200
2026-05-1940.1041.8439.5741.65+0.73%2,005,300
2026-05-1842.8543.7540.6741.35-4.06%2,378,300
2026-05-1543.5843.7842.3443.10-4.16%3,526,100
2026-05-1446.0646.1344.8444.97-2.18%1,988,600
2026-05-1347.6647.7345.4445.97+0.22%2,105,000
2026-05-1247.2647.6243.3845.87-5.21%3,507,500
2026-05-1148.8749.0246.1548.39-1.14%3,466,400
2026-05-0849.1749.1747.2648.95+2.13%2,540,500
2026-05-0743.9049.4942.0047.93-6.70%5,318,800
2026-05-0650.2551.4049.5451.37+3.40%3,575,400
2026-05-0550.2550.3048.7349.68+0.40%2,970,200
2026-05-0449.4250.1948.7449.48+1.02%2,283,900
2026-05-0147.7149.1946.8248.98+0.99%2,473,300
2026-04-3044.6448.6044.2248.50+10.05%3,475,100
2026-04-2942.1944.4142.1944.07+7.17%2,696,000
2026-04-2841.7742.9740.9741.12-5.41%2,406,000
2026-04-2744.1344.5042.2843.47-1.50%1,794,200
2026-04-2445.0545.0943.6544.13+1.19%1,945,100
2026-04-2344.0745.3943.0443.61+3.17%2,842,900
2026-04-2242.2942.6040.9442.27+2.40%1,742,700
2026-04-2140.8542.0240.8441.28+1.55%1,712,500
2026-04-2040.0540.6939.7540.65+1.62%1,690,700
2026-04-1739.0240.6138.9040.00+4.66%1,568,800
2026-04-1637.4438.3337.2038.22+2.60%1,553,800
2026-04-1538.3838.4937.0037.25-2.67%1,387,700
2026-04-1438.5438.7237.7738.27+0.60%1,052,700
2026-04-1336.9238.6336.8238.04+1.44%1,582,000
2026-04-1037.6638.7537.4437.50+1.30%1,490,700
2026-04-0935.8037.0535.8037.02+3.21%1,867,300
2026-04-0836.3336.7535.2235.87+7.78%2,886,200
2026-04-0732.5633.4832.5633.28+1.43%1,896,600
2026-04-0632.6633.5932.2832.81+0.64%1,087,800
2026-04-0231.6833.8331.5932.60-2.10%1,313,600
2026-04-0132.0434.0131.9833.30+5.61%2,279,000
2026-03-3129.4231.6329.2531.53+12.45%1,878,300
2026-03-3030.5030.6127.6528.04-6.91%2,291,000
2026-03-2730.7631.2530.0830.12-3.55%1,412,000
2026-03-2632.8532.8530.9731.23-4.29%1,306,100
2026-03-2533.1133.3032.4832.63+0.15%1,440,300
2026-03-2431.2733.3531.2332.58+2.65%1,680,400
2026-03-2331.0031.9830.6731.74+5.98%1,592,800
2026-03-2030.8831.0429.5629.95-3.11%2,351,200
2026-03-1930.4531.3429.8030.91-1.94%2,197,500
2026-03-1832.1432.7031.4131.52-1.68%2,114,000
2026-03-1731.4332.8831.1432.06+2.17%2,615,800
2026-03-1631.8332.1131.3431.38+0.80%1,421,100
2026-03-1331.8632.1030.5931.13-0.10%1,156,600
2026-03-1232.2632.5131.0931.16-5.75%1,383,400
2026-03-1133.1133.3832.7233.06-0.33%1,112,100
2026-03-1032.8534.1432.6333.17+0.91%1,574,392
2026-03-0931.8232.8930.7832.87+2.94%2,391,678
2026-03-0631.8132.8331.6231.93-2.59%1,872,600
2026-03-0533.4234.5632.6032.78-3.79%2,064,500
2026-03-0435.4335.4333.4834.07-1.87%1,554,400
2026-03-0334.9635.5334.3234.72-5.11%2,855,000
2026-03-0235.0037.0334.8036.59+0.33%1,422,000
2026-02-2735.9136.6335.3536.47-0.82%1,727,000
2026-02-2637.8938.2036.0136.77-3.54%2,197,500
2026-02-2539.2039.2637.9238.12-2.36%1,994,600
2026-02-2438.9139.6638.6639.04+1.46%1,795,900
2026-02-2338.7939.7638.3038.48-1.16%2,010,000
2026-02-2036.0639.1036.0638.93+7.36%5,599,400
2026-02-1937.9738.3136.1436.26-6.04%4,904,100
2026-02-1839.7540.2538.0238.59-7.44%4,615,100
2026-02-1741.5642.2240.3841.69-1.63%2,229,400
2026-02-1343.0443.5241.9742.38+1.31%1,564,100
2026-02-1242.9043.8641.6341.83-2.29%1,952,900
2026-02-1142.3143.0441.8042.81+2.88%2,508,800
2026-02-1041.9942.2040.9441.61-0.90%2,358,600
2026-02-0941.6942.1140.8341.99+1.01%2,637,600
2026-02-0639.2241.7839.2141.57+7.64%3,748,700
2026-02-0537.8838.8837.4238.62+1.10%2,779,900
2026-02-0439.3340.8837.3038.20-1.77%3,546,400
2026-02-0337.7339.5037.0038.89+3.90%4,154,100
2026-02-0236.2038.2936.0237.43+1.41%2,752,800
2026-01-3037.1438.6536.2436.91-2.82%5,447,200
2026-01-2936.9639.8934.5537.98+9.93%10,056,900
2026-01-2833.6835.3933.4834.55+5.79%4,803,400
2026-01-2732.6332.9932.2632.66+0.52%2,297,800
2026-01-2632.9932.9931.8632.49-1.52%1,927,100
2026-01-2333.7133.7732.3732.99-2.43%1,686,200
2026-01-2234.5534.7432.9733.81-0.53%2,099,600
2026-01-2133.5634.4433.1733.99+3.09%2,151,400
2026-01-2032.3033.4732.0132.97-1.14%3,016,200
2026-01-1633.0434.2932.9433.35+2.02%2,604,400
2026-01-1532.9833.4832.2532.69+1.36%4,187,500
2026-01-1430.5532.9830.5532.25+4.78%3,442,200
2026-01-1330.5531.1230.3230.78+2.02%1,388,800
2026-01-1230.9430.9429.8230.17-3.58%1,354,700
2026-01-0931.5931.5930.8931.29-0.03%1,117,000
2026-01-0830.5931.5029.7331.30+2.15%1,594,400
2026-01-0730.9331.1329.6830.64-2.82%1,821,200
2026-01-0628.7332.3828.7331.53+10.83%4,066,700
2026-01-0527.6330.2927.5928.45+5.72%2,405,000
2026-01-0227.0027.3626.1826.91+2.01%2,150,600
2025-12-3126.9826.9826.2426.38-1.68%927,400
2025-12-3026.5927.0126.5526.83+1.13%1,063,100
2025-12-2926.6326.8526.3226.53-1.27%854,100
2025-12-2627.0727.0726.5926.87-0.30%658,800
2025-12-2427.3927.3926.5126.95-1.82%1,048,500
2025-12-2326.5227.5726.4827.45+2.62%1,347,700
2025-12-2227.0927.3426.6826.75+0.19%1,663,000
2025-12-1926.4526.9926.2526.70+1.06%3,849,200
2025-12-1826.1026.9526.0026.42+3.69%3,490,800
2025-12-1726.4026.5525.3225.48-2.90%2,660,600
2025-12-1626.7126.9525.7326.24-1.80%2,021,900
2025-12-1527.1827.5526.6426.72-1.44%5,380,500
2025-12-1228.4328.9327.0427.11-4.81%2,266,700
2025-12-1129.1629.1727.9528.48-2.70%2,063,200
2025-12-1028.8330.2628.7329.27+1.07%1,655,100
2025-12-0928.5429.2828.5028.96+0.73%997,300
2025-12-0829.3329.3428.6128.75-1.61%1,176,000
2025-12-0529.1329.5429.1029.22+1.39%1,644,900
2025-12-0428.7428.9328.2728.82-0.28%1,602,500
2025-12-0326.7229.0426.5228.90+8.99%2,099,500
2025-12-0226.1426.8926.0026.52+2.10%1,580,200
2025-12-0126.2026.6625.9325.97-2.70%1,380,700
2025-11-2826.0726.7625.9626.69+3.37%574,600
2025-11-2625.8626.3925.7425.82+0.31%1,368,200
2025-11-2524.6125.7724.3725.74+3.66%1,407,200
2025-11-2424.1624.9023.9324.83+3.11%1,350,900
2025-11-2122.8324.1922.4124.08+5.61%1,711,300
2025-11-2023.7524.1422.6422.80-1.85%2,031,100
2025-11-1923.3223.7523.0023.23+0.09%1,256,300
2025-11-1823.3223.6822.9723.21-1.65%1,454,700
2025-11-1724.7924.7923.4223.60-4.49%1,695,400
2025-11-1424.5625.2124.3524.71-2.27%1,845,600
2025-11-1326.1926.4424.8025.29-4.48%2,231,400
2025-11-1226.9827.3626.2826.47-0.53%2,286,100
2025-11-1127.4327.4326.0926.61-3.59%2,295,400
2025-11-1027.6627.8926.9127.60+2.30%1,554,100
2025-11-0726.5227.0526.1226.98-0.85%1,544,700
2025-11-0627.4527.9026.8627.21-0.80%1,712,300
2025-11-0527.4228.3627.2727.43-0.04%1,787,400
2025-11-0428.1628.7427.2827.44-5.18%2,100,300
2025-11-0330.3530.6128.8728.94-3.28%2,752,900

Most recent 250 sessions, newest first.

Seasonal returns

Best month historically: Jun (+22.71%). Worst month: Jul (-10.71%). Based on 5 years of daily data (2022–2026).

FAQ · from the current price data · as of 2026-10-30

Quick answers

What is Allegro Microsystems Inc's (ALGM) latest close?

30.53 on 2026-10-30, from the Closelook data lake's daily price record.

What is ALGM's 52-week high and low?

71.77 high and 22.41 low over the trailing 52 weeks, as of 2026-10-30.

What is Allegro Microsystems Inc's strongest and weakest month historically?

Historically, ALGM's strongest calendar month has been Jun (average +22.71%) and its weakest Jul (average -10.71%), based on 5 years of daily data (2022–2026).

How many years of seasonality does this cover?

5 years (2022–2026), computed from 1024 daily bars in the Closelook data lake.

What is Allegro Microsystems Inc's Closelooknet score?

36 out of 100 (momentum 8 · quality 34 · valuation 15), as of 2026-10-31. Scores are Closelooknet's own research readings, not ratings or investment advice.

What is the current Closelooknet signal on ALGM?

Down 6.6% at the close: Already below its 50-day; one of the day's sharpest drops. As of 2026-10-29. A research diary reading, not advice.

Is ALGM above its 50-day and 200-day moving averages?

Allegro Microsystems Inc trades 6.2% below its 50-day and 19.1% below its 200-day moving average (4.1% below its 20-day). As of 2026-10-29.