Natural Alternatives International, Inc. (NAII) NASDAQ

Currency In USD

NAII Historical Return

If you invested $1000 in Natural Alternatives International, Inc. (NAII) 10 years ago, it would be worth $87.27 as of October 22, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $89.89, while $1000 invested 1 year ago would be worth $454.55. This corresponds to total returns of -91.27%, -91.01%, -54.55%, respectively, with annualized returns of -21.64%, -38.22%, -54.55%.

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

NAII Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
October 21, 2026	1.23	1.19	1.19	1.24	1.16	1,777
October 20, 2026	1.17	1.16	1.16	1.26	1.15	54,349
October 19, 2026	1.16	1.15	1.15	1.16	1.15	11,327
October 16, 2026	1.15	1.15	1.15	1.2	1.15	25,549
October 15, 2026	1.19	1.12	1.12	1.19	1.1	5,059
October 14, 2026	1.14	1.14	1.14	1.17	1.08	31,593
October 13, 2026	1.21	1.15	1.15	1.32	1.15	30,113
October 12, 2026	1.13	1.22	1.22	1.34	1.13	63,719
October 09, 2026	1.18	1.14	1.14	1.42	1.11	93,963
October 08, 2026	1.26	1.15	1.15	1.38	1.12	48,970
October 07, 2026	1.33	1.29	1.29	1.34	1.21	34,166
October 06, 2026	1.53	1.33	1.33	1.53	1.31	24,413
October 05, 2026	1.43	1.45	1.45	1.46	1.43	10,772
October 02, 2026	1.6	1.48	1.48	1.62	1.42	25,964
October 01, 2026	1.51	1.48	1.48	1.58	1.41	14,201
September 30, 2026	1.54	1.49	1.49	1.58	1.32	59,950
September 29, 2026	1.63	1.47	1.47	1.63	1.28	90,102
September 28, 2026	1.77	1.7	1.7	1.79	1.7	11,145
September 25, 2026	1.75	1.75	1.75	1.77	1.75	4,593
September 24, 2026	1.75	1.73	1.73	1.76	1.73	8,698
September 23, 2026	1.9	1.85	1.85	1.95	1.8	19,566
September 22, 2026	1.99	1.9	1.9	1.99	1.88	6,257
September 21, 2026	1.87	1.87	1.87	1.9	1.84	20,517
September 18, 2026	1.92	1.87	1.87	1.92	1.85	8,581
September 17, 2026	2.08	1.92	1.92	2.15	1.88	23,237
September 16, 2026	1.99	1.96	1.96	2.24	1.95	14,700
September 15, 2026	1.95	1.97	1.97	2	1.95	1,647
September 11, 2026	2	1.96	1.96	2.05	1.93	8,386
September 10, 2026	2	2.02	2.02	2.05	2	4,632
September 09, 2026	2.01	2	2	2.05	1.99	13,904
September 08, 2026	2.13	1.98	1.98	2.19	1.98	11,636
September 04, 2026	2.13	2.08	2.08	2.13	2.04	8,343
September 03, 2026	2.1	2.12	2.12	2.19	2.1	24,217
September 02, 2026	2.06	2.12	2.12	2.27	2.04	16,692
September 01, 2026	2.12	2.07	2.07	2.12	2.05	1,254
August 31, 2026	2.15	2.11	2.11	2.17	2.11	3,674
August 28, 2026	2.3	2.16	2.16	2.3	2.16	4,126
August 27, 2026	2.08	2.29	2.29	2.36	2.07	198,981
August 26, 2026	2.15	2.17	2.17	2.19	2.15	4,402
August 25, 2026	2.19	2.17	2.17	2.19	2.16	2,450
August 24, 2026	2.18	2.16	2.16	2.31	2.03	10,860
August 21, 2026	2.13	2.15	2.15	2.41	2.07	44,641
August 20, 2026	2.14	2.07	2.07	2.42	2.07	8,950
August 19, 2026	2.12	2.12	2.12	2.12	2.12	2,406
August 18, 2026	2.11	2.04	2.04	2.11	2.04	3,344
August 17, 2026	2.02	2.05	2.05	2.14	2	20,093
August 14, 2026	2.27	2.04	2.04	2.27	2.01	17,723
August 13, 2026	2.06	2.17	2.17	2.21	2.06	20,358
August 12, 2026	2.07	2.1	2.1	2.24	2.04	23,576
August 11, 2026	2.09	2.26	2.26	2.37	2.05	1.33M
August 10, 2026	2.29	2.33	2.33	2.33	2.27	1,628
August 07, 2026	2.39	2.37	2.37	2.39	2.34	4,838
August 06, 2026	2.26	2.38	2.38	2.44	2.25	1,289
August 05, 2026	2.3	2.26	2.26	2.33	2.25	26,417
August 04, 2026	2.29	2.32	2.32	2.35	2.26	7,900
August 03, 2026	2.39	2.27	2.27	2.39	2.26	7,789
July 31, 2026	2.45	2.29	2.29	2.45	2.29	2,323
July 30, 2026	2.22	2.43	2.43	2.48	2.22	37,621
July 29, 2026	2.41	2.22	2.22	2.45	2.2	12,552
July 28, 2026	2.36	2.35	2.35	2.36	2.3	5,320