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
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| May 20, 2026 | 42.27 | 44.57 | 41.25 | 44.33 | 44.33 | 6.43% | 2,444,518 |
| May 19, 2026 | 40.10 | 41.84 | 39.57 | 41.65 | 41.65 | 0.73% | 1,918,879 |
| May 18, 2026 | 42.85 | 43.75 | 40.67 | 41.35 | 41.35 | -4.06% | 2,353,112 |
| May 15, 2026 | 43.58 | 43.79 | 42.34 | 43.10 | 43.10 | -4.16% | 3,526,125 |
| May 14, 2026 | 46.06 | 46.14 | 44.84 | 44.97 | 44.97 | -2.18% | 1,989,024 |
| May 13, 2026 | 47.66 | 47.73 | 45.44 | 45.97 | 45.97 | 0.22% | 2,104,970 |
| May 12, 2026 | 47.26 | 47.62 | 43.38 | 45.87 | 45.87 | -5.21% | 3,507,461 |
| May 11, 2026 | 48.87 | 49.02 | 46.15 | 48.39 | 48.39 | -1.14% | 3,466,848 |
| May 8, 2026 | 49.17 | 49.17 | 47.26 | 48.95 | 48.95 | 2.13% | 2,540,502 |
| May 7, 2026 | 43.90 | 49.49 | 42.00 | 47.93 | 47.93 | -6.70% | 5,318,787 |
| May 6, 2026 | 50.25 | 51.40 | 49.54 | 51.37 | 51.37 | 3.40% | 3,575,439 |
| May 5, 2026 | 50.25 | 50.31 | 48.73 | 49.68 | 49.68 | 0.40% | 2,970,246 |
| May 4, 2026 | 49.43 | 50.19 | 48.74 | 49.48 | 49.48 | 1.02% | 2,283,943 |
| May 1, 2026 | 47.71 | 49.19 | 46.82 | 48.98 | 48.98 | 0.99% | 2,473,290 |
| Apr 30, 2026 | 44.64 | 48.60 | 44.22 | 48.50 | 48.50 | 10.05% | 3,475,146 |
| Apr 29, 2026 | 42.19 | 44.41 | 42.19 | 44.07 | 44.07 | 7.17% | 2,696,012 |
| Apr 28, 2026 | 41.77 | 42.97 | 40.97 | 41.12 | 41.12 | -5.41% | 2,405,962 |
| Apr 27, 2026 | 44.13 | 44.50 | 42.28 | 43.47 | 43.47 | -1.50% | 1,794,425 |
| Apr 24, 2026 | 45.06 | 45.09 | 43.65 | 44.13 | 44.13 | 1.19% | 1,945,062 |
| Apr 23, 2026 | 44.07 | 45.39 | 43.04 | 43.61 | 43.61 | 3.17% | 2,842,852 |
| Apr 22, 2026 | 42.29 | 42.60 | 40.94 | 42.27 | 42.27 | 2.40% | 1,742,926 |
| Apr 21, 2026 | 40.85 | 42.02 | 40.84 | 41.28 | 41.28 | 1.55% | 1,712,685 |
| Apr 20, 2026 | 40.05 | 40.69 | 39.75 | 40.65 | 40.65 | 1.62% | 1,690,977 |
| Apr 17, 2026 | 39.02 | 40.61 | 38.90 | 40.00 | 40.00 | 4.66% | 1,568,835 |
| Apr 16, 2026 | 37.44 | 38.33 | 37.20 | 38.22 | 38.22 | 2.60% | 1,554,038 |
| Apr 15, 2026 | 38.38 | 38.49 | 37.00 | 37.25 | 37.25 | -2.67% | 1,387,843 |
| Apr 14, 2026 | 38.54 | 38.72 | 37.77 | 38.27 | 38.27 | 0.60% | 1,052,904 |
| Apr 13, 2026 | 36.92 | 38.63 | 36.82 | 38.04 | 38.04 | 1.44% | 1,581,980 |
| Apr 10, 2026 | 37.66 | 38.75 | 37.44 | 37.50 | 37.50 | 1.30% | 1,490,717 |
| Apr 9, 2026 | 35.80 | 37.05 | 35.80 | 37.02 | 37.02 | 3.21% | 1,867,269 |
| Apr 8, 2026 | 36.33 | 36.75 | 35.22 | 35.87 | 35.87 | 7.78% | 2,886,216 |
| Apr 7, 2026 | 32.56 | 33.48 | 32.56 | 33.28 | 33.28 | 1.43% | 1,896,609 |
| Apr 6, 2026 | 32.66 | 33.59 | 32.28 | 32.81 | 32.81 | 0.64% | 1,087,936 |
| Apr 2, 2026 | 31.68 | 33.83 | 31.59 | 32.60 | 32.60 | -2.10% | 1,313,613 |
| Apr 1, 2026 | 32.04 | 34.01 | 31.98 | 33.30 | 33.30 | 5.61% | 2,279,305 |
| Mar 31, 2026 | 29.42 | 31.63 | 29.25 | 31.53 | 31.53 | 12.45% | 1,878,312 |
| Mar 30, 2026 | 30.50 | 30.61 | 27.65 | 28.04 | 28.04 | -6.91% | 2,291,024 |
| Mar 27, 2026 | 30.76 | 31.25 | 30.08 | 30.12 | 30.12 | -3.55% | 1,412,038 |
| Mar 26, 2026 | 32.85 | 32.85 | 30.97 | 31.23 | 31.23 | -4.29% | 1,306,146 |
| Mar 25, 2026 | 33.11 | 33.30 | 32.48 | 32.63 | 32.63 | 0.15% | 1,440,271 |
| Mar 24, 2026 | 31.27 | 33.35 | 31.23 | 32.58 | 32.58 | 2.65% | 1,680,760 |
| Mar 23, 2026 | 31.00 | 31.98 | 30.67 | 31.74 | 31.74 | 5.98% | 1,593,192 |
| Mar 20, 2026 | 30.88 | 31.04 | 29.56 | 29.95 | 29.95 | -3.11% | 2,351,376 |
| Mar 19, 2026 | 30.45 | 31.34 | 29.80 | 30.91 | 30.91 | -1.94% | 2,197,898 |
| Mar 18, 2026 | 32.14 | 32.70 | 31.41 | 31.52 | 31.52 | -1.68% | 2,114,024 |
| Mar 17, 2026 | 31.43 | 32.88 | 31.14 | 32.06 | 32.06 | 2.17% | 2,615,795 |
| Mar 16, 2026 | 31.83 | 32.11 | 31.35 | 31.38 | 31.38 | 0.80% | 1,421,508 |
| Mar 13, 2026 | 31.86 | 32.10 | 30.59 | 31.13 | 31.13 | -0.10% | 1,156,590 |
| Mar 12, 2026 | 32.26 | 32.51 | 31.09 | 31.16 | 31.16 | -5.75% | 1,383,376 |
| Mar 11, 2026 | 33.11 | 33.38 | 32.72 | 33.06 | 33.06 | -0.33% | 1,112,359 |