Archimedes Tech SPAC Partners III Stock Price History

NASDAQ: ARCIFinancial ServicesShell CompaniesUSD

10.05-0.01 (-0.10%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

ARCI price history at a glance

The price history for Archimedes Tech SPAC Partners III (ARCI) on this page begins on March 16, 2026, when the stock closed at $9.85; it most recently closed at $10.05 on October 5, 2026. The highest price in this record is $10.20, reached on August 10, 2026; the latest close is 1.5% below that peak. Prices are split-adjusted closing prices; daily open, high, low, close and volume for the past year are listed below.

Summary generated from market data by MetaCap's automated system. Methodology

Key price levels

High since 2026: $10.20
Date of high: Aug 10, 2026
Low since 2026: $9.83
Date of low: Mar 30, 2026
52-week high: $10.20
52-week low: $9.83
IPO year: 2026
Last close: $10.05

ARCI returns

1 week

-0.30%

1 month

-0.50%

3 months

0.00%

6 months

+1.62%

ARCI price return, excluding dividends.

ARCI daily prices (past year)

Daily open, high, low, close and volume
Date	Open	High	Low	Close	Change	Volume
Oct 9, 2026	10.07	10.07	10.05	10.05	-0.10%	690.02K
Oct 8, 2026	10.06	10.06	10.06	10.06	-0.10%	9.23K
Oct 6, 2026	10.07	10.08	10.07	10.07	-0.10%	20.80K
Oct 5, 2026	10.08	10.08	10.08	10.08	0.00%	0
Oct 2, 2026	10.08	10.08	10.08	10.08	-0.20%	10.10K
Oct 1, 2026	10.08	10.10	10.08	10.10	0.00%	48.80K
Sep 30, 2026	10.10	10.10	10.10	10.10	0.00%	0
Sep 29, 2026	10.10	10.10	10.10	10.10	0.00%	0
Sep 28, 2026	10.10	10.10	10.10	10.10	0.00%	0
Sep 25, 2026	10.10	10.10	10.10	10.10	0.00%	0
Sep 24, 2026	10.08	10.10	10.08	10.10	0.00%	300
Sep 23, 2026	10.10	10.10	10.05	10.10	0.00%	297.40K
Sep 22, 2026	10.10	10.10	10.10	10.10	0.00%	100
Sep 21, 2026	10.10	10.11	10.10	10.10	0.00%	8.20K
Sep 18, 2026	10.10	10.10	10.10	10.10	0.00%	0
Sep 17, 2026	10.10	10.10	10.10	10.10	0.00%	0
Sep 16, 2026	10.10	10.10	10.10	10.10	0.00%	0
Sep 15, 2026	10.10	10.10	10.10	10.10	0.00%	0
Sep 14, 2026	10.10	10.10	10.10	10.10	0.00%	0
Sep 11, 2026	10.10	10.10	10.10	10.10	0.00%	0
Sep 10, 2026	10.12	10.12	10.10	10.10	0.00%	7.20K
Sep 9, 2026	10.10	10.10	10.10	10.10	0.00%	0
Sep 8, 2026	10.11	10.11	10.10	10.10	0.00%	500
Sep 4, 2026	10.11	10.11	10.10	10.10	-0.10%	150.00K
Sep 3, 2026	10.11	10.11	10.11	10.11	-0.10%	43.80K
Sep 2, 2026	10.12	10.13	10.12	10.12	-0.20%	14.10K
Sep 1, 2026	10.14	10.14	10.14	10.14	0.00%	0
Aug 31, 2026	10.14	10.14	10.14	10.14	0.00%	100
Aug 28, 2026	10.14	10.14	10.14	10.14	0.00%	0
Aug 27, 2026	10.14	10.14	10.14	10.14	0.00%	0
Aug 26, 2026	10.14	10.14	10.14	10.14	0.00%	0
Aug 25, 2026	10.14	10.14	10.14	10.14	0.00%	0
Aug 24, 2026	10.14	10.14	10.14	10.14	0.00%	100
Aug 21, 2026	10.14	10.14	10.14	10.14	0.00%	41.90K
Aug 20, 2026	10.14	10.14	10.14	10.14	0.00%	0
Aug 19, 2026	10.14	10.14	10.14	10.14	0.00%	0
Aug 18, 2026	10.14	10.14	10.14	10.14	0.00%	0
Aug 17, 2026	10.15	10.15	10.12	10.14	-0.29%	2.60K
Aug 14, 2026	10.17	10.17	10.17	10.17	0.00%	0
Aug 13, 2026	10.17	10.17	10.17	10.17	0.00%	0
Aug 12, 2026	10.18	10.18	10.15	10.17	0.00%	28.10K
Aug 11, 2026	10.20	10.20	10.17	10.17	0.00%	28.10K
Aug 10, 2026	10.12	10.17	10.12	10.17	+0.10%	150.30K
Aug 7, 2026	10.16	10.16	10.16	10.16	0.00%	200
Aug 6, 2026	10.16	10.16	10.16	10.16	0.00%	16.10K
Aug 5, 2026	10.15	10.16	10.15	10.16	+0.10%	1.20K
Aug 4, 2026	10.09	10.15	10.07	10.15	+0.10%	165.80K
Aug 3, 2026	10.14	10.14	10.14	10.14	0.00%	4.10K
Jul 31, 2026	10.14	10.14	10.14	10.14	+0.40%	400
Jul 30, 2026	10.10	10.10	10.10	10.10	0.00%	0
Jul 29, 2026	10.10	10.10	10.10	10.10	0.00%	11.90K
Jul 28, 2026	10.06	10.10	10.06	10.10	+0.40%	4.70K
Jul 27, 2026	10.06	10.08	10.02	10.06	-0.20%	239.30K
Jul 24, 2026	10.08	10.08	10.08	10.08	0.00%	27.70K
Jul 23, 2026	10.08	10.08	10.08	10.08	+0.10%	27.70K
Jul 22, 2026	10.07	10.07	10.07	10.07	+0.10%	100
Jul 21, 2026	10.08	10.08	10.06	10.06	-0.30%	206.00K
Jul 20, 2026	10.09	10.09	10.07	10.09	0.00%	28.80K
Jul 17, 2026	10.09	10.09	10.09	10.09	+0.20%	200
Jul 16, 2026	10.08	10.08	10.07	10.07	-0.10%	1.60K
Jul 15, 2026	10.08	10.08	10.07	10.08	+0.10%	13.50K
Jul 14, 2026	10.06	10.07	10.06	10.07	+0.10%	500
Jul 13, 2026	10.05	10.06	10.05	10.06	+0.10%	550.80K
Jul 10, 2026	10.05	10.05	10.05	10.05	0.00%	76.90K
Jul 9, 2026	10.04	10.05	10.04	10.05	+0.40%	14.40K
Jul 8, 2026	10.01	10.01	10.01	10.01	0.00%	0
Jul 7, 2026	10.01	10.01	10.01	10.01	+0.10%	300
Jul 6, 2026	10.00	10.00	10.00	10.00	0.00%	0
Jul 2, 2026	10.03	10.03	10.00	10.00	-0.40%	800
Jul 1, 2026	10.02	10.04	10.02	10.04	+0.30%	31.40K
Jun 30, 2026	10.00	10.01	10.00	10.01	+0.10%	53.40K
Jun 29, 2026	9.99	10.00	9.99	10.00	+0.20%	67.40K
Jun 26, 2026	9.98	9.98	9.98	9.98	0.00%	0
Jun 25, 2026	9.98	9.98	9.98	9.98	0.00%	0
Jun 24, 2026	9.98	9.98	9.98	9.98	0.00%	0
Jun 23, 2026	9.98	9.98	9.98	9.98	0.00%	3.00K
Jun 22, 2026	9.98	9.98	9.98	9.98	0.00%	0
Jun 18, 2026	9.98	9.98	9.98	9.98	0.00%	0
Jun 17, 2026	9.98	9.98	9.98	9.98	-0.10%	300
Jun 16, 2026	9.99	9.99	9.99	9.99	0.00%	0
Jun 15, 2026	9.99	9.99	9.99	9.99	+0.10%	300
Jun 12, 2026	9.98	9.98	9.98	9.98	0.00%	0
Jun 11, 2026	9.98	9.98	9.98	9.98	0.00%	0
Jun 10, 2026	9.98	9.98	9.98	9.98	0.00%	0
Jun 9, 2026	9.98	9.98	9.98	9.98	0.00%	2.10K
Jun 8, 2026	9.98	9.98	9.98	9.98	0.00%	0
Jun 5, 2026	9.98	9.99	9.98	9.98	-0.10%	10.60K
Jun 4, 2026	9.99	9.99	9.99	9.99	0.00%	0
Jun 3, 2026	9.99	9.99	9.99	9.99	+0.10%	1.10K
Jun 2, 2026	9.98	9.98	9.97	9.98	0.00%	100.90K
Jun 1, 2026	9.99	10.00	9.98	9.98	-0.10%	36.50K
May 29, 2026	9.97	10.00	9.97	9.99	+0.20%	29.50K
May 28, 2026	9.97	9.97	9.97	9.97	0.00%	3.20K
May 27, 2026	9.97	9.97	9.96	9.97	+0.10%	18.10K
May 26, 2026	9.97	9.97	9.96	9.96	0.00%	3.40K
May 22, 2026	9.96	9.96	9.96	9.96	0.00%	37.90K
May 21, 2026	9.95	9.96	9.95	9.96	+0.10%	12.70K
May 20, 2026	9.94	9.95	9.93	9.95	+0.20%	21.80K
May 19, 2026	9.93	9.93	9.93	9.93	-0.20%	4.30K
May 18, 2026	9.93	9.95	9.93	9.95	+0.10%	6.50K
May 15, 2026	9.94	9.94	9.94	9.94	0.00%	0
May 14, 2026	9.94	9.95	9.94	9.94	0.00%	73.20K
May 13, 2026	9.94	9.94	9.94	9.94	+0.10%	7.20K
May 12, 2026	9.93	9.93	9.93	9.93	0.00%	800
May 11, 2026	9.93	9.93	9.93	9.93	+0.10%	9.40K
May 8, 2026	9.92	9.92	9.92	9.92	-0.30%	20.90K
May 7, 2026	9.95	9.95	9.92	9.95	+0.30%	30.00K
May 6, 2026	9.90	9.93	9.90	9.92	+0.10%	150.40K
May 5, 2026	9.91	9.91	9.91	9.91	0.00%	0
May 4, 2026	9.91	9.91	9.91	9.91	-0.10%	200
May 1, 2026	9.92	9.92	9.92	9.92	+0.10%	100
Apr 30, 2026	9.91	9.91	9.91	9.91	0.00%	200
Apr 29, 2026	10.06	10.06	9.91	9.91	+0.10%	700
Apr 28, 2026	9.93	9.94	9.90	9.90	0.00%	175.00K
Apr 27, 2026	9.90	9.90	9.90	9.90	0.00%	0
Apr 24, 2026	9.89	9.90	9.89	9.90	+0.10%	50.10K
Apr 23, 2026	9.89	9.90	9.89	9.89	0.00%	226.10K
Apr 22, 2026	9.89	9.89	9.89	9.89	0.00%	49.60K
Apr 21, 2026	9.88	9.90	9.88	9.89	0.00%	92.80K
Apr 20, 2026	9.89	9.89	9.89	9.89	0.00%	0
Apr 17, 2026	9.89	9.89	9.88	9.89	+0.10%	2.60K
Apr 16, 2026	9.89	9.89	9.88	9.88	-0.10%	1.20K
Apr 15, 2026	9.89	9.89	9.89	9.89	0.00%	25.80K
Apr 14, 2026	9.87	9.89	9.87	9.89	+0.10%	59.00K
Apr 13, 2026	9.88	9.88	9.87	9.88	-0.10%	30.80K
Apr 10, 2026	9.89	9.89	9.89	9.89	0.00%	0
Apr 9, 2026	9.89	9.89	9.89	9.89	0.00%	0
Apr 8, 2026	9.89	9.90	9.89	9.89	0.00%	92.00K
Apr 7, 2026	9.88	9.89	9.86	9.89	-0.10%	39.10K
Apr 6, 2026	9.90	9.90	9.90	9.90	0.00%	0
Apr 2, 2026	9.90	9.90	9.90	9.90	+0.41%	2.30K
Apr 1, 2026	9.85	9.86	9.85	9.86	+0.10%	19.30K
Mar 31, 2026	9.84	9.85	9.84	9.85	+0.10%	19.70K
Mar 30, 2026	9.86	9.86	9.83	9.84	-0.10%	42.90K
Mar 27, 2026	9.84	9.85	9.84	9.85	0.00%	103.30K
Mar 26, 2026	9.90	9.90	9.85	9.85	-0.40%	31.40K
Mar 25, 2026	9.90	9.90	9.88	9.89	+0.30%	4.90K
Mar 24, 2026	9.90	9.90	9.86	9.86	0.00%	6.40K
Mar 23, 2026	9.94	9.94	9.85	9.86	+0.10%	4.50K
Mar 20, 2026	9.90	9.90	9.85	9.85	-0.51%	418.40K
Mar 19, 2026	9.90	9.90	9.90	9.90	0.00%	200
Mar 18, 2026	9.90	9.90	9.90	9.90	0.00%	200
Mar 17, 2026	9.88	9.90	9.88	9.90	+0.51%	4.20K
Mar 16, 2026	9.90	9.90	9.85	9.85	—	4.90K

Prices are adjusted for stock splits. See adjusted closing price for how dividends and splits affect history, and the ARCI chart for longer ranges.