NASDAQ:AGEN | Historical Stock Price | AGENUS 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
2000-02-08 to 2026-09-04
Data captured

Stock Price Chart

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

$1.52$7.89$40.93$212.38$1,102.09$5,718.842000-02-082026-08-27

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

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Historical Stock Price — 2008

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2008-12-31$56.53$56.531,003
2008-12-30$49.46$49.46751
2008-12-29$50.64$50.641,982
2008-12-26$48.28$48.282,688
2008-12-24$49.46$49.46390
2008-12-23$51.82$51.822,460
2008-12-22$52.99$52.994,298
2008-12-19$56.53$56.53954
2008-12-18$55.35$55.351,392
2008-12-17$64.77$64.77984
2008-12-16$68.30$68.30406
2008-12-15$71.84$71.84596
2008-12-12$71.84$71.84444
2008-12-11$71.84$71.842,048
2008-12-10$52.99$52.991,098
2008-12-09$58.88$58.88978
2008-12-08$49.46$49.46617
2008-12-05$52.99$52.99823
2008-12-04$56.53$56.53122
2008-12-03$58.88$58.88396
2008-12-02$62.41$62.41999
2008-12-01$51.82$51.82635
2008-11-28$60.06$60.06353
2008-11-26$61.24$61.24332
2008-11-25$58.88$58.88985
2008-11-24$71.84$71.84652
2008-11-21$63.59$63.59705
2008-11-20$70.66$70.66428
2008-11-19$77.72$77.72326
2008-11-18$83.61$83.61650
2008-11-17$74.19$74.19516
2008-11-14$83.61$83.61529
2008-11-13$83.61$83.612,313
2008-11-12$85.97$85.972,690
2008-11-11$83.61$83.611,758
2008-11-10$82.43$82.432,357
2008-11-07$80.08$80.086,670
2008-11-06$87.14$87.14421
2008-11-05$93.03$93.03419
2008-11-04$93.03$93.03393
2008-11-03$88.32$88.32391
2008-10-31$88.32$88.321,219
2008-10-30$97.74$97.74706
2008-10-29$93.03$93.031,043
2008-10-28$78.90$78.90979
2008-10-27$70.66$70.662,565
2008-10-24$93.03$93.031,114
2008-10-23$108.34$108.341,246
2008-10-22$117.76$117.762,054
2008-10-21$127.18$127.181,645
2008-10-20$126.01$126.011,252
2008-10-17$114.23$114.23875
2008-10-16$102.45$102.45650
2008-10-15$115.41$115.41853
2008-10-14$115.41$115.411,691
2008-10-13$102.45$102.451,483
2008-10-10$71.84$71.843,482
2008-10-09$102.45$102.45447
2008-10-08$104.81$104.811,994
2008-10-07$123.65$123.652,315
2008-10-06$137.78$137.781,807
2008-10-03$149.56$149.561,270
2008-10-02$162.51$162.51334
2008-10-01$173.11$173.111,855
2008-09-30$186.06$186.06801
2008-09-29$197.84$197.843,931
2008-09-26$174.29$174.291,396
2008-09-25$177.82$177.82664
2008-09-24$175.47$175.472,590
2008-09-23$188.42$188.422,712
2008-09-22$189.60$189.601,123
2008-09-19$200.20$200.201,196
2008-09-18$188.42$188.42928
2008-09-17$180.18$180.181,649
2008-09-16$196.66$196.662,383
2008-09-15$187.24$187.24656
2008-09-12$190.78$190.78821
2008-09-11$197.84$197.84393
2008-09-10$184.89$184.89882
2008-09-09$201.37$201.37458
2008-09-08$208.44$208.44347
2008-09-05$207.26$207.26701
2008-09-04$206.08$206.08336
2008-09-03$201.37$201.37343
2008-09-02$206.08$206.08816
2008-08-29$204.91$204.91660
2008-08-28$215.51$215.51443
2008-08-27$207.26$207.261,039
2008-08-26$230.81$230.81728
2008-08-25$208.44$208.44115
2008-08-22$216.68$216.68240
2008-08-21$213.15$213.15476
2008-08-20$223.75$223.75321
2008-08-19$221.39$221.391,364
2008-08-18$235.53$235.53492
2008-08-15$228.46$228.46787
2008-08-14$223.75$223.751,516
2008-08-13$217.86$217.86801
2008-08-12$215.51$215.51824
2008-08-11$217.86$217.861,379
2008-08-08$216.68$216.681,768
2008-08-07$207.26$207.263,439
2008-08-06$237.88$237.882,841
2008-08-05$236.70$236.704,327
2008-08-04$230.81$230.81962
2008-08-01$242.59$242.592,654
2008-07-31$231.99$231.992,732
2008-07-30$228.46$228.461,422
2008-07-29$215.51$215.511,224
2008-07-28$215.51$215.51339
2008-07-25$216.68$216.68391
2008-07-24$221.39$221.39459
2008-07-23$220.22$220.22627
2008-07-22$216.68$216.68384
2008-07-21$213.15$213.151,456
2008-07-18$207.26$207.26787
2008-07-17$200.20$200.202,153
2008-07-16$193.13$193.131,279
2008-07-15$191.95$191.95908
2008-07-14$201.37$201.37487
2008-07-11$202.55$202.55905
2008-07-10$207.26$207.262,438
2008-07-09$203.73$203.732,521
2008-07-08$214.33$214.33914
2008-07-07$211.97$211.971,883
2008-07-03$217.86$217.86647
2008-07-02$227.28$227.281,433
2008-07-01$217.86$217.86712
2008-06-30$227.28$227.281,113
2008-06-27$213.15$213.151,257
2008-06-26$204.91$204.912,559
2008-06-25$217.86$217.861,058
2008-06-24$206.08$206.082,063
2008-06-23$216.68$216.681,538
2008-06-20$211.97$211.974,726
2008-06-19$220.22$220.221,546
2008-06-18$228.46$228.462,452
2008-06-17$237.88$237.88907
2008-06-16$235.53$235.53788
2008-06-13$236.70$236.701,135
2008-06-12$235.53$235.531,512
2008-06-11$236.70$236.702,238
2008-06-10$249.66$249.661,402
2008-06-09$259.08$259.081,510
2008-06-06$263.79$263.791,243
2008-06-05$272.03$272.031,173
2008-06-04$273.21$273.21809
2008-06-03$270.85$270.851,410
2008-06-02$269.68$269.681,002
2008-05-30$272.03$272.031,543
2008-05-29$273.21$273.211,198
2008-05-28$273.21$273.21572
2008-05-27$273.21$273.211,316
2008-05-23$274.39$274.393,048
2008-05-22$268.50$268.501,236
2008-05-21$270.85$270.852,091
2008-05-20$279.10$279.102,587
2008-05-19$275.56$275.561,411
2008-05-16$277.92$277.921,202
2008-05-15$273.21$273.21767
2008-05-14$273.21$273.211,293
2008-05-13$276.74$276.741,142
2008-05-12$274.39$274.39926
2008-05-09$275.56$275.562,288
2008-05-08$274.39$274.391,671
2008-05-07$261.43$261.432,627
2008-05-06$267.32$267.322,217
2008-05-05$263.79$263.791,849
2008-05-02$259.08$259.081,647
2008-05-01$255.54$255.542,457
2008-04-30$266.14$266.142,773
2008-04-29$273.21$273.211,807
2008-04-28$273.21$273.212,823
2008-04-25$261.43$261.432,176
2008-04-24$266.14$266.141,963
2008-04-23$267.32$267.321,720
2008-04-22$262.61$262.613,308
2008-04-21$275.56$275.562,935
2008-04-18$287.34$287.345,171
2008-04-17$280.27$280.274,220
2008-04-16$281.45$281.458,121
2008-04-15$282.63$282.636,326
2008-04-14$292.05$292.057,603
2008-04-11$307.36$307.366,236
2008-04-10$310.89$310.8910,043
2008-04-09$322.67$322.6723,532
2008-04-08$356.82$356.82131,257
2008-04-07$290.87$290.87527
2008-04-04$294.41$294.41775
2008-04-03$287.34$287.34439
2008-04-02$290.87$290.87507
2008-04-01$284.99$284.99510
2008-03-31$277.92$277.92753
2008-03-28$280.27$280.271,761
2008-03-27$287.34$287.34807
2008-03-26$282.63$282.63497
2008-03-25$294.41$294.411,270
2008-03-24$268.50$268.501,331
2008-03-20$264.97$264.971,039
2008-03-19$292.05$292.051,512
2008-03-18$280.27$280.271,688
2008-03-17$270.85$270.85833
2008-03-14$267.32$267.322,346
2008-03-13$260.26$260.261,258
2008-03-12$266.14$266.142,609
2008-03-11$250.83$250.83851
2008-03-10$263.79$263.79867
2008-03-07$269.68$269.681,228
2008-03-06$254.37$254.37865
2008-03-05$274.39$274.39613
2008-03-04$276.74$276.74899
2008-03-03$266.14$266.14768
2008-02-29$264.97$264.97740
2008-02-28$270.85$270.85564
2008-02-27$280.27$280.27497
2008-02-26$281.45$281.451,522
2008-02-25$268.50$268.501,161
2008-02-22$267.32$267.321,121
2008-02-21$250.83$250.831,746
2008-02-20$259.08$259.081,515
2008-02-19$274.39$274.391,562
2008-02-15$248.48$248.48994
2008-02-14$254.37$254.37935
2008-02-13$272.03$272.031,039
2008-02-12$263.79$263.79879
2008-02-11$255.54$255.54825
2008-02-08$255.54$255.541,942
2008-02-07$266.14$266.149,236
2008-02-06$254.37$254.371,068
2008-02-05$246.12$246.121,147
2008-02-04$255.54$255.54908
2008-02-01$248.48$248.481,358
2008-01-31$255.54$255.541,487
2008-01-30$259.08$259.081,845
2008-01-29$259.08$259.081,270
2008-01-28$277.92$277.921,610
2008-01-25$264.97$264.971,169
2008-01-24$273.21$273.21996
2008-01-23$296.76$296.761,973
2008-01-22$282.63$282.632,960
2008-01-18$287.34$287.341,992
2008-01-17$292.05$292.053,624
2008-01-16$295.58$295.581,875
2008-01-15$283.81$283.812,530
2008-01-14$288.52$288.522,251
2008-01-11$288.52$288.523,835
2008-01-10$281.45$281.455,907
2008-01-09$269.68$269.683,927
2008-01-08$253.19$253.191,816
2008-01-07$254.37$254.37807
2008-01-04$253.19$253.19679
2008-01-03$253.19$253.192,132
2008-01-02$244.95$244.95965