NASDAQ:ALGM | Historical Stock Price | ALLEGRO MICROSYSTEMS, INC.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2020-10-29 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$15.70$20.95$27.95$37.29$49.74$66.362020-10-292026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$26.38$26.38927,400
2025-12-30$26.83$26.831,063,100
2025-12-29$26.53$26.53854,100
2025-12-26$26.87$26.87658,800
2025-12-24$26.95$26.951,048,500
2025-12-23$27.45$27.451,347,700
2025-12-22$26.75$26.751,663,000
2025-12-19$26.70$26.703,849,200
2025-12-18$26.42$26.423,490,800
2025-12-17$25.48$25.482,660,600
2025-12-16$26.24$26.242,021,900
2025-12-15$26.72$26.725,380,500
2025-12-12$27.11$27.112,266,700
2025-12-11$28.48$28.482,063,200
2025-12-10$29.27$29.271,655,100
2025-12-09$28.96$28.96997,300
2025-12-08$28.75$28.751,176,000
2025-12-05$29.22$29.221,644,900
2025-12-04$28.82$28.821,602,500
2025-12-03$28.90$28.902,099,500
2025-12-02$26.51$26.511,580,200
2025-12-01$25.97$25.971,380,700
2025-11-28$26.69$26.69574,600
2025-11-26$25.82$25.821,368,200
2025-11-25$25.74$25.741,407,200
2025-11-24$24.83$24.831,350,900
2025-11-21$24.08$24.081,711,300
2025-11-20$22.80$22.802,031,100
2025-11-19$23.23$23.231,256,300
2025-11-18$23.21$23.211,454,700
2025-11-17$23.60$23.601,695,400
2025-11-14$24.71$24.711,845,600
2025-11-13$25.29$25.292,231,400
2025-11-12$26.47$26.472,286,100
2025-11-11$26.61$26.612,295,400
2025-11-10$27.60$27.601,554,100
2025-11-07$26.98$26.981,544,700
2025-11-06$27.21$27.211,712,300
2025-11-05$27.43$27.431,787,400
2025-11-04$27.44$27.442,100,300
2025-11-03$28.94$28.942,752,900
2025-10-31$29.92$29.924,042,600
2025-10-30$30.27$30.275,743,500
2025-10-29$30.74$30.742,888,800
2025-10-28$30.66$30.662,674,400
2025-10-27$30.48$30.483,009,100
2025-10-24$30.91$30.912,559,600
2025-10-23$30.99$30.993,278,500
2025-10-22$30.70$30.703,883,300
2025-10-21$31.05$31.052,307,500
2025-10-20$30.49$30.491,933,000
2025-10-17$29.06$29.061,772,400
2025-10-16$29.33$29.332,613,200
2025-10-15$28.88$28.883,079,000
2025-10-14$27.61$27.611,989,500
2025-10-13$27.41$27.411,444,600
2025-10-10$25.92$25.922,454,200
2025-10-09$27.76$27.762,531,800
2025-10-08$28.28$28.283,230,800
2025-10-07$27.50$27.501,756,600
2025-10-06$28.22$28.221,905,500
2025-10-03$28.32$28.321,545,800
2025-10-02$28.41$28.411,486,900
2025-10-01$28.42$28.421,742,900
2025-09-30$29.20$29.201,274,200
2025-09-29$29.16$29.161,497,600
2025-09-26$29.71$29.71966,100
2025-09-25$29.93$29.931,343,900
2025-09-24$31.07$31.07919,100
2025-09-23$31.41$31.411,254,100
2025-09-22$31.42$31.421,433,200
2025-09-19$31.45$31.453,402,900
2025-09-18$31.95$31.951,715,400
2025-09-17$30.75$30.751,237,300
2025-09-16$30.13$30.13987,800
2025-09-15$29.87$29.871,376,300
2025-09-12$29.80$29.801,146,800
2025-09-11$29.97$29.971,604,500
2025-09-10$30.51$30.512,130,100
2025-09-09$30.92$30.921,494,100
2025-09-08$30.39$30.391,642,900
2025-09-05$30.57$30.571,414,600
2025-09-04$30.10$30.101,465,000
2025-09-03$29.83$29.831,136,600
2025-09-02$30.50$30.501,620,900
2025-08-29$30.85$30.851,204,000
2025-08-28$32.01$32.012,170,300
2025-08-27$31.46$31.461,777,400
2025-08-26$31.65$31.651,812,800
2025-08-25$31.76$31.76842,200
2025-08-22$32.13$32.131,365,800
2025-08-21$30.88$30.88802,800
2025-08-20$30.48$30.482,031,200
2025-08-19$30.64$30.641,028,000
2025-08-18$30.83$30.831,158,100
2025-08-15$30.70$30.701,159,800
2025-08-14$31.10$31.10916,400
2025-08-13$31.86$31.861,074,300
2025-08-12$31.89$31.891,715,900
2025-08-11$29.81$29.811,193,300
2025-08-08$30.77$30.771,850,300
2025-08-07$30.72$30.721,028,600
2025-08-06$30.81$30.811,066,200
2025-08-05$31.24$31.241,245,400
2025-08-04$31.47$31.471,287,500
2025-08-01$31.26$31.262,066,200
2025-07-31$31.41$31.413,423,900
2025-07-30$33.87$33.872,909,300
2025-07-29$34.01$34.011,388,800
2025-07-28$34.37$34.371,182,400
2025-07-25$33.70$33.701,944,300
2025-07-24$32.76$32.763,487,200
2025-07-23$34.08$34.083,466,300
2025-07-22$36.24$36.242,240,600
2025-07-21$36.69$36.691,828,100
2025-07-18$36.62$36.621,695,000
2025-07-17$35.79$35.792,276,000
2025-07-16$35.47$35.473,616,200
2025-07-15$36.47$36.471,778,700
2025-07-14$36.60$36.601,775,900
2025-07-11$36.76$36.762,062,600
2025-07-10$37.51$37.513,996,600
2025-07-09$36.89$36.893,144,600
2025-07-08$36.35$36.352,044,800
2025-07-07$35.40$35.401,294,600
2025-07-03$35.93$35.93683,700
2025-07-02$35.72$35.722,655,200
2025-07-01$34.40$34.402,416,400
2025-06-30$34.19$34.192,351,500
2025-06-27$34.18$34.183,502,100
2025-06-26$33.67$33.674,234,800
2025-06-25$32.94$32.942,388,100
2025-06-24$32.56$32.562,473,800
2025-06-23$31.88$31.881,347,300
2025-06-20$30.96$30.961,924,500
2025-06-18$31.07$31.071,434,600
2025-06-17$30.72$30.721,958,200
2025-06-16$31.19$31.192,948,700
2025-06-13$28.65$28.651,547,300
2025-06-12$29.89$29.891,067,800
2025-06-11$30.04$30.041,847,200
2025-06-10$30.50$30.502,514,700
2025-06-09$29.80$29.802,057,200
2025-06-06$28.81$28.811,153,500
2025-06-05$27.95$27.951,411,400
2025-06-04$28.00$28.002,086,000
2025-06-03$26.78$26.782,435,200
2025-06-02$25.84$25.841,251,100
2025-05-30$25.35$25.351,704,200
2025-05-29$25.75$25.751,262,100
2025-05-28$25.97$25.971,439,600
2025-05-27$26.12$26.121,551,900
2025-05-23$25.42$25.421,357,800
2025-05-22$25.91$25.912,001,900
2025-05-21$26.28$26.281,630,900
2025-05-20$27.26$27.261,798,700
2025-05-19$27.12$27.121,866,200
2025-05-16$27.51$27.512,214,900
2025-05-15$27.02$27.022,874,400
2025-05-14$27.02$27.023,599,300
2025-05-13$26.30$26.304,593,800
2025-05-12$24.83$24.834,476,800
2025-05-09$22.33$22.333,093,500
2025-05-08$21.07$21.075,858,000
2025-05-07$18.69$18.697,871,500
2025-05-06$18.96$18.963,554,600
2025-05-05$19.15$19.152,772,200
2025-05-02$19.55$19.552,117,100
2025-05-01$18.83$18.831,847,600
2025-04-30$19.07$19.071,940,900
2025-04-29$18.76$18.762,364,000
2025-04-28$19.23$19.231,855,900
2025-04-25$19.12$19.122,105,200
2025-04-24$18.87$18.873,039,400
2025-04-23$17.52$17.523,974,600
2025-04-22$16.77$16.775,073,300
2025-04-21$16.53$16.536,547,900
2025-04-17$18.06$18.064,400,000
2025-04-16$18.93$18.936,080,600
2025-04-15$19.88$19.887,046,400
2025-04-14$22.01$22.012,031,700
2025-04-11$22.23$22.233,423,500
2025-04-10$21.82$21.823,993,900
2025-04-09$23.23$23.235,237,200
2025-04-08$18.93$18.934,222,500
2025-04-07$21.06$21.063,339,300
2025-04-04$21.32$21.323,981,000
2025-04-03$22.89$22.893,653,400
2025-04-02$25.91$25.913,002,300
2025-04-01$26.18$26.183,522,500
2025-03-31$25.13$25.135,450,600
2025-03-28$24.86$24.863,039,200
2025-03-27$25.53$25.532,216,000
2025-03-26$26.85$26.851,879,300
2025-03-25$27.14$27.141,746,300
2025-03-24$27.19$27.191,776,800
2025-03-21$26.57$26.573,312,200
2025-03-20$26.84$26.841,999,900
2025-03-19$27.41$27.412,034,100
2025-03-18$26.90$26.902,514,500
2025-03-17$26.94$26.942,135,300
2025-03-14$26.78$26.783,736,100
2025-03-13$26.24$26.243,772,700
2025-03-12$24.94$24.942,958,700
2025-03-11$25.47$25.473,349,500
2025-03-10$25.41$25.415,221,300
2025-03-07$27.71$27.717,678,100
2025-03-06$28.31$28.319,629,600
2025-03-05$26.78$26.783,744,700
2025-03-04$25.04$25.045,934,200
2025-03-03$25.62$25.6211,111,700
2025-02-28$22.30$22.304,121,600
2025-02-27$21.77$21.772,133,200
2025-02-26$23.25$23.252,389,400
2025-02-25$23.49$23.493,285,500
2025-02-24$25.01$25.014,461,700
2025-02-21$26.61$26.611,776,300
2025-02-20$27.61$27.612,497,300
2025-02-19$27.70$27.703,219,000
2025-02-18$26.78$26.784,419,300
2025-02-14$25.74$25.743,597,900
2025-02-13$24.57$24.571,765,800
2025-02-12$24.43$24.432,152,400
2025-02-11$24.49$24.492,009,400
2025-02-10$23.37$23.372,428,500
2025-02-07$24.28$24.283,077,500
2025-02-06$25.01$25.012,226,600
2025-02-05$24.61$24.612,474,500
2025-02-04$23.94$23.942,007,400
2025-02-03$22.96$22.963,360,600
2025-01-31$24.09$24.094,541,000
2025-01-30$24.00$24.006,014,900
2025-01-29$22.85$22.852,605,600
2025-01-28$22.19$22.192,660,300
2025-01-27$23.23$23.232,462,900
2025-01-24$24.35$24.352,333,700
2025-01-23$24.94$24.943,475,600
2025-01-22$25.02$25.021,832,100
2025-01-21$25.00$25.002,227,200
2025-01-17$24.84$24.842,147,500
2025-01-16$23.71$23.712,077,300
2025-01-15$23.40$23.401,550,900
2025-01-14$22.91$22.911,588,600
2025-01-13$23.04$23.041,543,400
2025-01-10$22.96$22.961,655,800
2025-01-08$23.68$23.682,032,100
2025-01-07$24.38$24.382,643,500
2025-01-06$24.76$24.762,754,700
2025-01-03$23.70$23.702,604,100
2025-01-02$22.81$22.812,192,400