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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$36.18$36.18393,100
2021-12-30$36.07$36.07469,800
2021-12-29$35.60$35.60672,700
2021-12-28$35.68$35.681,408,000
2021-12-27$35.72$35.72975,300
2021-12-23$34.49$34.49421,400
2021-12-22$33.84$33.84526,000
2021-12-21$33.83$33.83694,800
2021-12-20$32.80$32.80932,000
2021-12-17$33.12$33.121,803,800
2021-12-16$32.77$32.771,312,100
2021-12-15$34.70$34.701,379,000
2021-12-14$33.05$33.05905,200
2021-12-13$33.61$33.61640,900
2021-12-10$33.87$33.87608,600
2021-12-09$33.81$33.81455,700
2021-12-08$34.86$34.86556,200
2021-12-07$34.55$34.55897,900
2021-12-06$32.06$32.06741,500
2021-12-03$32.25$32.25651,600
2021-12-02$31.80$31.80947,200
2021-12-01$31.51$31.511,262,200
2021-11-30$31.23$31.231,150,400
2021-11-29$31.82$31.82551,800
2021-11-26$30.93$30.93280,500
2021-11-24$31.60$31.60303,600
2021-11-23$31.10$31.10765,400
2021-11-22$31.65$31.65465,800
2021-11-19$32.82$32.82294,000
2021-11-18$32.47$32.47960,000
2021-11-17$32.89$32.89333,200
2021-11-16$33.48$33.48461,300
2021-11-15$33.08$33.08404,200
2021-11-12$32.97$32.97289,900
2021-11-11$32.73$32.73567,500
2021-11-10$32.04$32.04954,000
2021-11-09$32.64$32.641,029,700
2021-11-08$32.68$32.68988,800
2021-11-05$32.22$32.22807,000
2021-11-04$31.93$31.93435,500
2021-11-03$31.80$31.801,062,300
2021-11-02$31.38$31.381,249,100
2021-11-01$31.34$31.344,462,000
2021-10-29$33.36$33.361,006,700
2021-10-28$33.83$33.832,037,100
2021-10-27$32.70$32.70650,200
2021-10-26$33.08$33.08328,800
2021-10-25$33.10$33.10400,000
2021-10-22$33.13$33.13376,500
2021-10-21$33.33$33.33393,000
2021-10-20$32.13$32.13365,400
2021-10-19$32.13$32.13663,900
2021-10-18$31.29$31.29703,200
2021-10-15$31.35$31.35407,800
2021-10-14$30.71$30.71324,900
2021-10-13$29.66$29.66285,300
2021-10-12$29.69$29.69400,600
2021-10-11$29.67$29.67534,200
2021-10-08$30.29$30.29177,100
2021-10-07$30.79$30.79305,300
2021-10-06$30.04$30.04512,500
2021-10-05$30.22$30.22460,200
2021-10-04$30.22$30.22492,200
2021-10-01$31.51$31.51410,800
2021-09-30$31.96$31.96380,600
2021-09-29$31.79$31.79801,200
2021-09-28$33.02$33.02576,000
2021-09-27$34.51$34.51275,500
2021-09-24$34.44$34.44264,200
2021-09-23$34.97$34.97281,000
2021-09-22$34.42$34.42425,000
2021-09-21$33.58$33.58430,400
2021-09-20$33.36$33.36951,000
2021-09-17$34.55$34.553,722,900
2021-09-16$35.74$35.741,067,800
2021-09-15$36.46$36.461,574,100
2021-09-14$33.98$33.981,133,900
2021-09-13$33.29$33.291,868,100
2021-09-10$30.72$30.72543,900
2021-09-09$30.64$30.64664,300
2021-09-08$31.21$31.21467,200
2021-09-07$31.19$31.19618,400
2021-09-03$31.05$31.05665,900
2021-09-02$30.69$30.69491,900
2021-09-01$30.16$30.16623,000
2021-08-31$30.05$30.051,171,000
2021-08-30$30.53$30.53852,900
2021-08-27$30.41$30.41460,100
2021-08-26$29.14$29.14200,500
2021-08-25$29.11$29.11473,100
2021-08-24$28.40$28.40183,300
2021-08-23$28.30$28.30363,800
2021-08-20$28.25$28.25377,000
2021-08-19$27.88$27.88264,000
2021-08-18$27.83$27.83354,300
2021-08-17$28.14$28.14221,100
2021-08-16$29.13$29.13582,200
2021-08-13$29.59$29.59263,800
2021-08-12$29.16$29.16404,100
2021-08-11$28.92$28.92247,600
2021-08-10$29.23$29.23274,300
2021-08-09$28.72$28.72329,000
2021-08-06$28.53$28.53280,200
2021-08-05$28.89$28.89347,300
2021-08-04$28.52$28.52372,500
2021-08-03$28.22$28.22407,900
2021-08-02$27.73$27.73577,600
2021-07-30$27.41$27.41856,300
2021-07-29$27.12$27.121,108,900
2021-07-28$25.28$25.28800,100
2021-07-27$24.93$24.93381,700
2021-07-26$25.86$25.86293,500
2021-07-23$26.17$26.17347,100
2021-07-22$25.88$25.88264,200
2021-07-21$26.66$26.66401,500
2021-07-20$26.01$26.01366,300
2021-07-19$25.48$25.48559,500
2021-07-16$25.23$25.23352,800
2021-07-15$26.03$26.03185,200
2021-07-14$26.77$26.77274,600
2021-07-13$27.30$27.30275,600
2021-07-12$27.97$27.97343,400
2021-07-09$27.53$27.53365,300
2021-07-08$27.09$27.09364,800
2021-07-07$27.66$27.66625,100
2021-07-06$28.24$28.241,133,100
2021-07-02$27.64$27.64322,300
2021-07-01$27.37$27.37565,300
2021-06-30$27.70$27.70364,600
2021-06-29$27.75$27.75233,100
2021-06-28$27.71$27.71354,100
2021-06-25$27.32$27.321,197,200
2021-06-24$27.42$27.42246,200
2021-06-23$26.61$26.61248,900
2021-06-22$26.54$26.54412,600
2021-06-21$26.55$26.55619,000
2021-06-18$26.55$26.551,252,000
2021-06-17$27.18$27.18728,800
2021-06-16$27.27$27.27595,900
2021-06-15$27.25$27.25509,000
2021-06-14$27.86$27.86506,400
2021-06-11$27.47$27.47275,500
2021-06-10$27.40$27.40364,600
2021-06-09$27.29$27.29476,500
2021-06-08$27.36$27.36598,600
2021-06-07$26.84$26.84901,400
2021-06-04$26.93$26.93391,600
2021-06-03$26.28$26.28483,900
2021-06-02$26.65$26.65803,900
2021-06-01$26.22$26.22521,000
2021-05-28$26.21$26.21513,700
2021-05-27$26.71$26.711,505,100
2021-05-26$26.01$26.01914,800
2021-05-25$25.58$25.58778,800
2021-05-24$24.90$24.90715,400
2021-05-21$24.02$24.02901,300
2021-05-20$24.59$24.591,417,300
2021-05-19$23.99$23.99490,800
2021-05-18$23.68$23.68623,100
2021-05-17$23.80$23.80738,400
2021-05-14$23.73$23.73467,500
2021-05-13$22.88$22.88844,200
2021-05-12$22.86$22.86734,400
2021-05-11$24.45$24.45779,300
2021-05-10$23.94$23.94698,700
2021-05-07$24.79$24.79459,100
2021-05-06$24.85$24.85438,700
2021-05-05$25.24$25.24791,500
2021-05-04$24.11$24.11757,200
2021-05-03$24.36$24.36375,400
2021-04-30$24.68$24.68703,800
2021-04-29$25.33$25.33716,000
2021-04-28$25.85$25.851,065,700
2021-04-27$26.59$26.591,223,700
2021-04-26$26.86$26.861,109,100
2021-04-23$27.06$27.06882,400
2021-04-22$26.00$26.00289,500
2021-04-21$26.09$26.09315,900
2021-04-20$25.00$25.001,002,100
2021-04-19$25.65$25.65548,800
2021-04-16$26.73$26.73286,500
2021-04-15$26.76$26.76647,200
2021-04-14$26.09$26.09627,400
2021-04-13$26.48$26.48544,100
2021-04-12$26.25$26.25420,900
2021-04-09$27.40$27.40264,000
2021-04-08$27.88$27.88193,500
2021-04-07$27.42$27.42315,100
2021-04-06$27.64$27.64594,800
2021-04-05$28.00$28.00495,500
2021-04-01$27.26$27.26580,500
2021-03-31$25.35$25.35547,000
2021-03-30$24.92$24.92925,500
2021-03-29$24.68$24.68699,200
2021-03-26$25.27$25.27669,700
2021-03-25$24.43$24.431,096,800
2021-03-24$23.91$23.91684,700
2021-03-23$25.78$25.78868,700
2021-03-22$26.85$26.85614,500
2021-03-19$26.04$26.041,935,900
2021-03-18$26.07$26.07659,500
2021-03-17$26.92$26.92544,800
2021-03-16$26.83$26.83301,300
2021-03-15$26.88$26.88382,900
2021-03-12$26.79$26.79389,300
2021-03-11$26.96$26.96688,500
2021-03-10$25.29$25.29471,300
2021-03-09$25.83$25.83368,400
2021-03-08$25.14$25.14588,900
2021-03-05$25.63$25.63819,800
2021-03-04$25.45$25.451,761,400
2021-03-03$26.65$26.65780,500
2021-03-02$26.94$26.94503,900
2021-03-01$27.17$27.17564,100
2021-02-26$26.14$26.14914,800
2021-02-25$26.72$26.721,807,200
2021-02-24$28.29$28.291,669,200
2021-02-23$28.94$28.941,132,400
2021-02-22$29.46$29.461,101,400
2021-02-19$30.14$30.14764,000
2021-02-18$30.29$30.291,046,600
2021-02-17$30.30$30.30815,000
2021-02-16$30.49$30.49795,400
2021-02-12$30.40$30.40884,000
2021-02-11$30.54$30.541,247,000
2021-02-10$30.46$30.461,670,200
2021-02-09$30.46$30.462,337,400
2021-02-08$30.84$30.843,983,500
2021-02-05$30.19$30.198,651,900
2021-02-04$31.66$31.66838,300
2021-02-03$29.02$29.021,608,800
2021-02-02$32.01$32.01649,500
2021-02-01$30.36$30.36574,300
2021-01-29$27.92$27.921,076,900
2021-01-28$29.49$29.49426,800
2021-01-27$29.35$29.35831,300
2021-01-26$30.82$30.82992,600
2021-01-25$31.85$31.85520,600
2021-01-22$33.50$33.50448,000
2021-01-21$34.10$34.10369,300
2021-01-20$32.82$32.82350,300
2021-01-19$32.29$32.29702,000
2021-01-15$32.72$32.72822,600
2021-01-14$33.37$33.37927,200
2021-01-13$32.95$32.95910,900
2021-01-12$31.35$31.351,172,900
2021-01-11$30.20$30.20440,000
2021-01-08$29.19$29.19544,100
2021-01-07$29.94$29.941,627,500
2021-01-06$28.07$28.07694,700
2021-01-05$26.16$26.16618,900
2021-01-04$25.52$25.521,033,300