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.

View year

Historical Stock Price — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$46.71$46.7185,418
2018-12-28$46.91$46.9185,739
2018-12-27$46.91$46.91125,164
2018-12-26$49.07$49.07185,402
2018-12-24$43.57$43.5769,786
2018-12-21$44.36$44.36294,053
2018-12-20$48.68$48.681,157,589
2018-12-19$39.45$39.4559,729
2018-12-18$39.84$39.8447,776
2018-12-17$43.38$43.3863,402
2018-12-14$47.50$47.5040,760
2018-12-13$49.07$49.0748,367
2018-12-12$52.21$52.2154,262
2018-12-11$51.42$51.4258,863
2018-12-10$51.62$51.6268,405
2018-12-07$51.62$51.6281,637
2018-12-06$46.12$46.1242,268
2018-12-04$45.34$45.3434,320
2018-12-03$48.68$48.6838,844
2018-11-30$47.30$47.3047,888
2018-11-29$45.14$45.1428,924
2018-11-28$47.11$47.1178,697
2018-11-27$43.57$43.5732,583
2018-11-26$43.96$43.9625,337
2018-11-23$43.38$43.3814,719
2018-11-21$42.98$42.9832,633
2018-11-20$42.39$42.3957,288
2018-11-19$41.02$41.0256,137
2018-11-16$41.41$41.4143,527
2018-11-15$42.98$42.9878,911
2018-11-14$40.43$40.4362,088
2018-11-13$39.06$39.0633,647
2018-11-12$37.68$37.6833,408
2018-11-09$39.06$39.0636,327
2018-11-08$40.63$40.6350,914
2018-11-07$40.63$40.63121,633
2018-11-06$38.08$38.08102,114
2018-11-05$36.90$36.9064,997
2018-11-02$37.10$37.1092,301
2018-11-01$35.13$35.1385,922
2018-10-31$31.21$31.2152,616
2018-10-30$32.19$32.1986,314
2018-10-29$31.80$31.8052,214
2018-10-26$33.76$33.7647,001
2018-10-25$35.13$35.1355,953
2018-10-24$32.58$32.5866,760
2018-10-23$35.53$35.5340,582
2018-10-22$35.53$35.5378,356
2018-10-19$38.47$38.4758,511
2018-10-18$39.25$39.2537,107
2018-10-17$40.43$40.4338,167
2018-10-16$38.86$38.8687,797
2018-10-15$38.86$38.8640,770
2018-10-12$38.27$38.2737,545
2018-10-11$39.25$39.2583,461
2018-10-10$37.68$37.6860,737
2018-10-09$38.67$38.6768,451
2018-10-08$40.43$40.4343,883
2018-10-05$41.81$41.8140,729
2018-10-04$42.00$42.0060,141
2018-10-03$42.20$42.2052,754
2018-10-02$41.02$41.02113,853
2018-10-01$44.36$44.36169,541
2018-09-28$42.00$42.0030,957
2018-09-27$42.00$42.0038,590
2018-09-26$42.00$42.0050,165
2018-09-25$41.41$41.4154,466
2018-09-24$42.20$42.2059,265
2018-09-21$39.25$39.25110,679
2018-09-20$41.22$41.2270,336
2018-09-19$39.25$39.2555,668
2018-09-18$37.49$37.4952,540
2018-09-17$35.92$35.9265,374
2018-09-14$38.67$38.6745,880
2018-09-13$37.68$37.6821,241
2018-09-12$37.68$37.6840,118
2018-09-11$38.67$38.6746,665
2018-09-10$38.86$38.8639,089
2018-09-07$39.65$39.6536,964
2018-09-06$39.65$39.6562,842
2018-09-05$42.00$42.0045,641
2018-09-04$43.18$43.1863,025
2018-08-31$43.38$43.3874,214
2018-08-30$41.22$41.2257,003
2018-08-29$42.20$42.2049,376
2018-08-28$41.22$41.2267,020
2018-08-27$42.39$42.39135,930
2018-08-24$40.63$40.6388,108
2018-08-23$39.45$39.4590,192
2018-08-22$40.43$40.43285,656
2018-08-21$36.90$36.90196,917
2018-08-20$31.21$31.2156,193
2018-08-17$32.78$32.7871,610
2018-08-16$33.37$33.3789,922
2018-08-15$33.17$33.1797,595
2018-08-14$35.13$35.1348,464
2018-08-13$34.35$34.3546,568
2018-08-10$35.53$35.5387,303
2018-08-09$34.35$34.3562,821
2018-08-08$33.95$33.9553,829
2018-08-07$33.76$33.7636,006
2018-08-06$32.97$32.9738,162
2018-08-03$34.15$34.1542,380
2018-08-02$34.54$34.5451,872
2018-08-01$36.11$36.1128,868
2018-07-31$35.92$35.9298,756
2018-07-30$36.51$36.5191,246
2018-07-27$34.74$34.7466,739
2018-07-26$35.92$35.9280,134
2018-07-25$36.70$36.7050,919
2018-07-24$38.08$38.08133,652
2018-07-23$40.43$40.4343,511
2018-07-20$41.61$41.6133,647
2018-07-19$43.96$43.9646,252
2018-07-18$42.00$42.0044,948
2018-07-17$42.20$42.2043,822
2018-07-16$40.82$40.8260,019
2018-07-13$42.98$42.9827,900
2018-07-12$43.38$43.3833,703
2018-07-11$43.57$43.5733,214
2018-07-10$44.16$44.1672,731
2018-07-09$46.12$46.1251,409
2018-07-06$47.50$47.5046,558
2018-07-05$47.11$47.1130,504
2018-07-03$46.12$46.1232,037
2018-07-02$47.50$47.5055,082
2018-06-29$44.55$44.5578,753
2018-06-28$45.34$45.3462,179
2018-06-27$44.36$44.3656,407
2018-06-26$48.28$48.28142,578
2018-06-25$45.34$45.3483,415
2018-06-22$47.69$47.69150,980
2018-06-21$49.07$49.07130,677
2018-06-20$54.37$54.37184,892
2018-06-19$49.66$49.66140,102
2018-06-18$52.99$52.9965,063
2018-06-15$52.99$52.99351,086
2018-06-14$54.96$54.9681,489
2018-06-13$55.94$55.94108,233
2018-06-12$56.33$56.33121,587
2018-06-11$57.11$57.11120,349
2018-06-08$60.84$60.8459,143
2018-06-07$60.84$60.8446,981
2018-06-06$61.83$61.8360,544
2018-06-05$62.41$62.4167,412
2018-06-04$64.18$64.1840,857
2018-06-01$65.95$65.9540,796
2018-05-31$65.75$65.7546,787
2018-05-30$66.93$66.9372,650
2018-05-29$66.54$66.5457,436
2018-05-25$68.50$68.5021,776
2018-05-24$68.11$68.1121,165
2018-05-23$68.30$68.3037,382
2018-05-22$68.30$68.3074,988
2018-05-21$66.73$66.7346,329
2018-05-18$67.71$67.7145,891
2018-05-17$65.75$65.7554,022
2018-05-16$66.73$66.7358,761
2018-05-15$64.97$64.9767,927
2018-05-14$65.75$65.75173,515
2018-05-11$69.87$69.8747,689
2018-05-10$68.30$68.3080,669
2018-05-09$66.93$66.9399,806
2018-05-08$62.02$62.02124,501
2018-05-07$65.16$65.16123,365
2018-05-04$72.23$72.2346,008
2018-05-03$70.46$70.4640,500
2018-05-02$72.03$72.0371,707
2018-05-01$68.11$68.1167,758
2018-04-30$67.32$67.3282,325
2018-04-27$70.66$70.6637,560
2018-04-26$69.68$69.6851,363
2018-04-25$70.07$70.0742,681
2018-04-24$70.66$70.6657,166
2018-04-23$70.26$70.2692,286
2018-04-20$74.19$74.1976,277
2018-04-19$73.80$73.80145,712
2018-04-18$77.53$77.5364,391
2018-04-17$80.27$80.2784,037
2018-04-16$80.67$80.67138,686
2018-04-13$91.27$91.2734,223
2018-04-12$89.30$89.3031,278
2018-04-11$90.48$90.4847,185
2018-04-10$88.32$88.3245,855
2018-04-09$84.00$84.0059,571
2018-04-06$87.54$87.5452,917
2018-04-05$88.13$88.1347,811
2018-04-04$90.48$90.4880,975
2018-04-03$89.50$89.5080,048
2018-04-02$89.50$89.5064,024
2018-03-29$92.44$92.4454,353
2018-03-28$92.64$92.6472,354
2018-03-27$94.60$94.6073,118
2018-03-26$97.94$97.94103,551
2018-03-23$98.53$98.5379,915
2018-03-22$101.86$101.8665,481
2018-03-21$104.81$104.81112,146
2018-03-20$110.50$110.5060,243
2018-03-19$112.86$112.8671,177
2018-03-16$114.62$114.62231,705
2018-03-15$108.54$108.54156,111
2018-03-14$112.27$112.2778,539
2018-03-13$113.05$113.05113,241
2018-03-12$111.29$111.2997,299
2018-03-09$112.86$112.86104,809
2018-03-08$115.21$115.21108,223
2018-03-07$118.55$118.5582,330
2018-03-06$114.03$114.03136,403
2018-03-05$117.57$117.57114,811
2018-03-02$110.89$110.89101,080
2018-03-01$106.77$106.7790,350
2018-02-28$105.79$105.79132,898
2018-02-27$103.63$103.6382,432
2018-02-26$101.86$101.8692,006
2018-02-23$99.31$99.31103,678
2018-02-22$95.19$95.1977,317
2018-02-21$94.21$94.21171,488
2018-02-20$92.25$92.25212,309
2018-02-16$85.38$85.38114,408
2018-02-15$82.63$82.6392,642
2018-02-14$75.37$75.3740,006
2018-02-13$73.80$73.8033,265
2018-02-12$74.39$74.3975,834
2018-02-09$71.64$71.6465,996
2018-02-08$72.82$72.8254,328
2018-02-07$73.80$73.8025,164
2018-02-06$73.21$73.2162,852
2018-02-05$71.44$71.4494,293
2018-02-02$73.41$73.4198,894
2018-02-01$70.66$70.6647,699
2018-01-31$70.85$70.8543,348
2018-01-30$71.64$71.6433,245
2018-01-29$73.41$73.4139,155
2018-01-26$73.41$73.4159,948
2018-01-25$73.60$73.6087,512
2018-01-24$78.31$78.3135,344
2018-01-23$80.08$80.0853,044
2018-01-22$80.08$80.08189,295
2018-01-19$77.92$77.9251,485
2018-01-18$76.55$76.5548,545
2018-01-17$76.94$76.94123,105
2018-01-16$74.39$74.3961,955
2018-01-12$75.96$75.9629,495
2018-01-11$76.15$76.1538,355
2018-01-10$76.74$76.7446,584
2018-01-09$76.35$76.3585,983
2018-01-08$76.74$76.74296,223
2018-01-05$68.89$68.8928,135
2018-01-04$69.09$69.0936,776
2018-01-03$69.48$69.4830,183
2018-01-02$69.48$69.4865,094