Allegro MicroSystems, Inc. (ALGM) stock
ALGMNasdaqSemiconductors & Related DevicesFiscal year ends March 31
Financials through Q1 FY2027, quarter ended Jun 26, 2026Last filing: 10-Q on Jul 31, 2026Score 6/30104% above fair value
$30.53−2.50 (-7.57%)
Close on Oct 30, 2026Market cap $5.69BP/E 508.8Yield –
Price history
Allegro MicroSystems share prices for every month, newest first. Adjusted for stock splits, not for dividends.
Close, Oct 30, 2026
$30.53
-7.57% on the day
52-week range
$22.41 – $71.77
-57.5% from the high
Change over 52 weeks
+0.9%
From $30.27 on Oct 30, 2025
Average volume
2.88M
Shares a day, last 90 sessions
| Month | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 2026 | $36.35 | $40.03 | $30.01 | $30.53 | -16.01% | 77,563,922 |
| Sep 2026 | $35.39 | $38.00 | $32.67 | $36.35 | +0.28% | 49,322,567 |
| Aug 2026 | $39.69 | $46.58 | $35.34 | $36.25 | -12.65% | 41,580,057 |
| Jul 2026 | $66.85 | $67.90 | $38.15 | $41.50 | -40.39% | 63,508,317 |
| Jun 2026 | $47.23 | $71.77 | $43.27 | $69.62 | +45.44% | 71,686,722 |
| May 2026 | $47.71 | $52.80 | $39.57 | $47.87 | -1.30% | 55,030,177 |
| Apr 2026 | $32.04 | $48.60 | $31.59 | $48.50 | +53.82% | 40,273,312 |
| Mar 2026 | $35.00 | $37.04 | $27.65 | $31.53 | -13.55% | 39,689,541 |
| Feb 2026 | $36.20 | $43.86 | $35.35 | $36.47 | -1.19% | 55,078,409 |
| Jan 2026 | $27.00 | $39.89 | $26.18 | $36.91 | +39.92% | 59,620,045 |
| Dec 2025 | $26.20 | $30.26 | $25.32 | $26.38 | -1.16% | 41,432,400 |
| Nov 2025 | $30.35 | $30.61 | $22.41 | $26.69 | -10.80% | 32,960,439 |
| Oct 2025 | $28.97 | $33.84 | $25.87 | $29.92 | +2.47% | 59,875,437 |
| Sep 2025 | $30.00 | $32.16 | $28.85 | $29.20 | -5.35% | 31,064,424 |
| Aug 2025 | $31.13 | $33.20 | $29.71 | $30.85 | -1.78% | 28,797,151 |
| Jul 2025 | $33.77 | $38.45 | $30.50 | $31.41 | -8.13% | 51,313,451 |
| Jun 2025 | $25.42 | $34.30 | $25.19 | $34.19 | +34.87% | 41,936,319 |
| May 2025 | $19.39 | $27.56 | $18.17 | $25.35 | +32.93% | 60,846,064 |
| Apr 2025 | $24.86 | $26.51 | $16.38 | $19.07 | -24.11% | 80,836,389 |
| Mar 2025 | $26.75 | $29.45 | $23.21 | $25.13 | +12.69% | 85,242,435 |
| Feb 2025 | $22.70 | $28.17 | $21.16 | $22.30 | -7.43% | 53,404,521 |
| Jan 2025 | $22.10 | $25.61 | $21.50 | $24.09 | +10.20% | 50,945,224 |
| Dec 2024 | $21.79 | $23.13 | $20.50 | $21.86 | +0.60% | 40,623,134 |
| Nov 2024 | $20.93 | $22.96 | $18.59 | $21.73 | +4.27% | 39,836,755 |
| Oct 2024 | $23.31 | $24.14 | $19.71 | $20.84 | -10.56% | 44,105,496 |
| Sep 2024 | $24.32 | $24.76 | $20.95 | $23.30 | -5.01% | 61,460,487 |
| Aug 2024 | $25.50 | $26.23 | $20.42 | $24.53 | +2.04% | 43,891,552 |
| Jul 2024 | $28.25 | $33.26 | $22.31 | $24.04 | -14.87% | 58,993,754 |
| Jun 2024 | $29.91 | $30.37 | $26.92 | $28.24 | -6.30% | 28,025,568 |
| May 2024 | $29.08 | $31.82 | $23.64 | $30.14 | +1.52% | 32,980,202 |
| Apr 2024 | $27.32 | $30.53 | $25.45 | $29.69 | +10.13% | 31,029,477 |
| Mar 2024 | $31.55 | $32.63 | $26.21 | $26.96 | -14.39% | 32,620,432 |
| Feb 2024 | $25.88 | $32.50 | $25.82 | $31.49 | +21.40% | 43,487,188 |
| Jan 2024 | $29.90 | $30.13 | $25.00 | $25.94 | -14.30% | 33,482,212 |
| Dec 2023 | $27.15 | $31.42 | $26.20 | $30.27 | +11.20% | 25,726,587 |
| Nov 2023 | $25.91 | $28.99 | $24.66 | $27.22 | +4.85% | 28,529,836 |
| Oct 2023 | $31.70 | $32.19 | $25.45 | $25.96 | -18.72% | 27,883,552 |
| Sep 2023 | $38.46 | $38.68 | $31.31 | $31.94 | -16.50% | 27,895,794 |
| Aug 2023 | $49.50 | $49.64 | $36.52 | $38.25 | -25.89% | 32,283,184 |
| Jul 2023 | $45.75 | $53.05 | $43.04 | $51.61 | +14.33% | 30,899,340 |
| Jun 2023 | $39.50 | $45.35 | $37.93 | $45.14 | +14.77% | 26,799,529 |
| May 2023 | $35.84 | $41.48 | $35.71 | $39.33 | +9.95% | 36,124,389 |
| Apr 2023 | $48.25 | $48.72 | $34.19 | $35.77 | -25.46% | 33,047,713 |
| Mar 2023 | $43.97 | $48.30 | $41.30 | $47.99 | +9.87% | 34,368,515 |
| Feb 2023 | $38.40 | $45.99 | $38.05 | $43.68 | +14.44% | 33,945,791 |
| Jan 2023 | $30.26 | $38.56 | $28.84 | $38.17 | +27.15% | 27,762,036 |
| Dec 2022 | $31.17 | $34.14 | $29.13 | $30.02 | -3.60% | 34,085,442 |
| Nov 2022 | $25.77 | $31.97 | $24.41 | $31.14 | +22.55% | 19,878,342 |
| Oct 2022 | $22.14 | $26.01 | $19.80 | $25.41 | +16.29% | 13,790,272 |
| Sep 2022 | $22.84 | $23.88 | $21.18 | $21.85 | -6.30% | 12,758,232 |
| Aug 2022 | $24.71 | $26.85 | $23.18 | $23.32 | -6.08% | 8,378,783 |
| Jul 2022 | $20.43 | $25.10 | $19.20 | $24.83 | +20.01% | 9,158,587 |
| Jun 2022 | $26.03 | $26.29 | $20.08 | $20.69 | -19.65% | 14,000,540 |
| May 2022 | $24.37 | $26.39 | $21.91 | $25.75 | +5.92% | 14,909,289 |
| Apr 2022 | $28.51 | $28.93 | $23.20 | $24.31 | -14.40% | 10,324,283 |
| Mar 2022 | $28.25 | $30.17 | $24.81 | $28.40 | -0.94% | 10,624,184 |
| Feb 2022 | $29.25 | $29.98 | $24.96 | $28.67 | +1.02% | 9,739,730 |
| Jan 2022 | $36.60 | $37.29 | $24.94 | $28.38 | -21.56% | 17,946,102 |
| Dec 2021 | $32.04 | $38.28 | $31.03 | $36.18 | +15.85% | 18,658,723 |
| Nov 2021 | $31.34 | $33.61 | $30.01 | $31.23 | -6.38% | 17,816,871 |
| Oct 2021 | $32.00 | $35.97 | $29.41 | $33.36 | +4.38% | 11,236,163 |
| Sep 2021 | $30.00 | $36.85 | $29.72 | $31.96 | +6.36% | 17,826,115 |
| Aug 2021 | $27.50 | $30.87 | $27.25 | $30.05 | +9.63% | 9,007,848 |
| Jul 2021 | $27.60 | $28.83 | $24.29 | $27.41 | -1.05% | 10,186,843 |
| Jun 2021 | $26.31 | $28.27 | $25.42 | $27.70 | +5.68% | 12,085,072 |
| May 2021 | $24.75 | $26.97 | $22.05 | $26.21 | +6.20% | 14,944,797 |
| Apr 2021 | $25.57 | $28.27 | $24.60 | $24.68 | -2.64% | 12,827,271 |
| Mar 2021 | $26.61 | $28.08 | $23.39 | $25.35 | -3.02% | 16,867,174 |
| Feb 2021 | $29.28 | $32.29 | $25.68 | $26.14 | -6.38% | 32,492,964 |
| Jan 2021 | $26.98 | $34.66 | $24.86 | $27.92 | +4.73% | 14,511,092 |
| Dec 2020 | $23.51 | $29.48 | $23.13 | $26.66 | +11.32% | 17,657,535 |
| Nov 2020 | $18.30 | $27.50 | $17.92 | $23.95 | +30.87% | 22,579,676 |
| Oct 2020 | $19.40 | $19.74 | $16.78 | $18.30 | – | 13,106,951 |
Seasonality
ALGM return in each calendar month over the last 7 years, including dividends. The current month runs to the latest close.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average | 7.7% | 3.6% | -1.6% | -0.4% | 9.2% | 12.5% | -5.0% | -5.8% | -4.4% | -3.7% | 7.6% | 5.7% |
| Months up | 4 of 6 | 3 of 6 | 2 of 6 | 2 of 6 | 5 of 6 | 4 of 6 | 2 of 6 | 2 of 6 | 2 of 6 | 3 of 6 | 4 of 6 | 4 of 6 |
| 2026 | 39.9% | -1.2% | -13.5% | 53.8% | -1.3% | 45.4% | -40.4% | -12.7% | 0.3% | -16.0% | ||
| 2025 | 10.2% | -7.4% | 12.7% | -24.1% | 32.9% | 34.9% | -8.1% | -1.8% | -5.3% | 2.5% | -10.8% | -1.2% |
| 2024 | -14.3% | 21.4% | -14.4% | 10.1% | 1.5% | -6.3% | -14.9% | 2.0% | -5.0% | -10.6% | 4.3% | 0.6% |
| 2023 | 27.1% | 14.4% | 9.9% | -25.5% | 10.0% | 14.8% | 14.3% | -25.9% | -16.5% | -18.7% | 4.9% | 11.2% |
| 2022 | -21.6% | 1.0% | -0.9% | -14.4% | 5.9% | -19.7% | 20.0% | -6.1% | -6.3% | 16.3% | 22.6% | -3.6% |
| 2021 | 4.7% | -6.4% | -3.0% | -2.6% | 6.2% | 5.7% | -1.0% | 9.6% | 6.4% | 4.4% | -6.4% | 15.9% |
| 2020 | 30.9% | 11.3% |