Supernus Pharmaceuticals, Inc. (SUPN) NASDAQ

Currency In USD

SUPN Historical Return

If you invested $1000 in Supernus Pharmaceuticals, Inc. (SUPN) 10 years ago, it would be worth $1,973.36 as of October 21, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $1,399.08, while $1000 invested 1 year ago would be worth $811.23. This corresponds to total returns of 97.34%, 39.91%, -18.88%, respectively, with annualized returns of 7.03%, 6.94%, -18.88%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

SUPN Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
October 20, 2026	39.95	41.23	41.23	41.74	39.77	1.24M
October 19, 2026	37.77	39.84	39.84	40.52	37.77	1.45M
October 16, 2026	39.49	37.88	37.88	39.5	37.54	1.44M
October 15, 2026	40.21	39.57	39.57	41.31	39.36	911,518
October 14, 2026	41.93	40.18	40.18	43.26	39.97	810,413
October 13, 2026	42.94	42.01	42.01	43.29	41.71	1.2M
October 12, 2026	42.67	42.81	42.81	43.2	41.9	914,563
October 09, 2026	42.18	42.67	42.67	43.14	42.15	579,132
October 08, 2026	42.41	42.14	42.14	43.41	41.14	645,461
October 07, 2026	42.24	43.05	43.05	43.38	42.24	571,034
October 06, 2026	42.86	42.83	42.83	43.12	41.4	632,153
October 05, 2026	42.38	42.76	42.76	43.2	42.38	1.29M
October 02, 2026	42.47	42.38	42.38	43.15	41.88	738,468
October 01, 2026	43.21	42.18	42.18	43.69	42.15	420,000
September 30, 2026	44.03	43.04	43.04	44.18	43.03	672,615
September 29, 2026	44.39	43.97	43.97	44.93	43.2	550,464
September 28, 2026	42.59	44.6	44.6	44.61	42.38	728,112
September 25, 2026	43.21	42.66	42.66	43.69	42.65	607,464
September 24, 2026	43.22	43.29	43.29	44	42.77	538,408
September 23, 2026	43.66	43.39	43.39	44.46	43.14	522,629
September 22, 2026	43.04	43.75	43.75	44.25	42.82	667,584
September 21, 2026	42	42.78	42.78	42.97	41.68	621,967
September 18, 2026	42.89	42	42	42.89	41.6	1.18M
September 17, 2026	41.66	42.92	42.92	43.4	41.46	559,773
September 16, 2026	41.31	41.38	41.38	41.84	40.75	787,813
September 15, 2026	41.49	41.28	41.28	41.75	40.51	669,222
September 11, 2026	41.81	41.64	41.64	42.44	41.62	707,158
September 10, 2026	41.84	41.69	41.69	42.55	41.11	726,748
September 09, 2026	42.17	42.07	42.07	42.59	41.5	580,125
September 08, 2026	43.56	42.43	42.43	43.56	42.32	428,151
September 04, 2026	43.66	43.53	43.53	44.11	43.43	444,196
September 03, 2026	44.56	43.97	43.97	44.56	43.16	390,319
September 02, 2026	44.42	44.03	44.03	45.05	43.67	445,940
September 01, 2026	44.35	43.74	43.74	44.75	43.53	757,780
August 31, 2026	43.82	44.21	44.21	44.37	42.84	535,722
August 28, 2026	43.95	43.73	43.73	44.34	43.12	487,775
August 27, 2026	44.87	44.19	44.19	45.04	43.89	464,946
August 26, 2026	45.11	44.88	44.88	45.43	44.5	499,683
August 25, 2026	45.37	45.36	45.36	45.86	44.23	496,055
August 24, 2026	45.6	45.11	45.11	45.86	44.82	495,504
August 21, 2026	47.71	45.85	45.85	47.82	45.79	748,892
August 20, 2026	47.86	47.45	47.45	48.26	46.93	646,851
August 19, 2026	49.5	48.54	48.54	49.82	48.51	797,223
August 18, 2026	48.8	49.03	49.03	49.57	48.54	592,237
August 17, 2026	47.66	48.27	48.27	48.66	47.66	528,629
August 14, 2026	46.7	48.27	48.27	48.39	46.57	309,182
August 13, 2026	47.74	47.15	47.15	48.18	46.87	645,327
August 12, 2026	47.15	47.87	47.87	47.92	46.26	634,900
August 11, 2026	47.01	46.88	46.88	48.61	46.77	669,683
August 10, 2026	47.11	47.07	47.07	47.72	46.47	739,644
August 07, 2026	47	47.64	47.64	47.88	46.43	695,164
August 06, 2026	47.82	46.76	46.76	48.4	46.55	1.34M
August 05, 2026	42.95	46.91	46.91	47.89	42.91	1.67M
August 04, 2026	46.23	43.25	43.25	46.58	42.63	3.71M
August 03, 2026	50.45	46	46	52.5	44.17	4.52M
July 31, 2026	45.19	44.63	44.63	45.67	44.35	572,074
July 30, 2026	46.3	45.61	45.61	46.77	45.5	466,933
July 29, 2026	47.6	46.57	46.57	48	46.08	522,131
July 28, 2026	47.78	47.73	47.73	48.45	46.77	538,195
July 27, 2026	46.56	46.98	46.98	48.08	45.84	523,012