Stock listing

NASDAQ:ATIIU Archimedes Tech SPAC Partners II Co. Stock

US listing (NASDAQ) of Archimedes Tech SPAC Partners II Co. · home listing NASDAQ:ATII

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Share price · NASDAQ:ATIIU

$8.20 USD 0.00 (0.0%)

Close on Oct 28, 2026

Past year -23.7% · daily closes, Oct 28, 2025 – Oct 28, 2026, adjusted for splits

Day range: $8.20 – $9.01 USDOct 28, 2026
Volume: 1,121 sharesOct 28, 2026
Market cap: $272.0M USDAt the close on Oct 28, 2026 · price × 33.17M shares outstanding
52-week range: $8.20 – $50.99 USDLowest and highest trades, Oct 29, 2025 – Oct 28, 2026
Traded on an average day: $15,681 USDMedian day 0 shares · 39 days with no trades · last 3 months, Jul 28, 2026 – Oct 28, 2026

Prices by listing

Listing	Last	Change	Volume	Open	High	Low	Previous close	Price from
NASDAQ:ATII · Home	$4.12 USD	-0.04 (-1.0%)	204,500	$3.90	$4.23	$3.70	$4.16	Close on Oct 30, 2026
NASDAQ:ATIIU	$8.20 USD	0.00 (0.0%)	1,121	$8.20	$9.01	$8.20	$8.20	Close on Oct 28, 2026

Daily closes

Last 3 months, Jul 28, 2026 – Oct 28, 2026 · NASDAQ:ATIIU · USD, adjusted for splits

Day	Close	Change	%	Open	High	Low	Volume
Wed, Oct 28	$8.20	0.00	0.0%	$8.20	$9.01	$8.20	1,121
Tue, Oct 27	$8.20	0.00	0.0%	$8.20	$8.20	$8.20	0
Mon, Oct 26	$8.20	0.00	0.0%	$8.20	$8.20	$8.20	0
Fri, Oct 23	$8.20	0.00	0.0%	$8.20	$8.20	$8.20	0
Thu, Oct 22	$8.20	0.00	0.0%	$8.20	$8.20	$8.20	1,121
Wed, Oct 21	$8.20	-0.81	-9.0%	$8.20	$8.20	$8.20	1,400
Tue, Oct 20	$9.01	0.00	0.0%	$9.01	$9.01	$9.01	0
Mon, Oct 19	$9.01	0.00	0.0%	$9.01	$9.01	$9.01	0
Fri, Oct 16	$9.01	+0.23	+2.6%	$9.77	$10.75	$9.01	1,700
Thu, Oct 15	$8.78	-2.21	-20.1%	$9.64	$10.75	$8.78	9,700
Wed, Oct 14	$10.99	-2.00	-15.4%	$14.29	$14.29	$9.01	19,200
Tue, Oct 13	$12.99	+1.96	+17.8%	$11.21	$32.40	$11.01	40,800
Mon, Oct 12	$11.03	-0.21	-1.9%	$11.03	$11.03	$11.03	200
Fri, Oct 9	$11.24	+0.06	+0.5%	$11.19	$11.24	$11.19	900
Thu, Oct 8	$11.18	-0.09	-0.8%	$11.13	$11.18	$11.13	300
Wed, Oct 7	$11.27	-0.06	-0.5%	$11.49	$11.50	$11.27	1,100
Tue, Oct 6	$11.33	0.00	0.0%	$11.33	$11.33	$11.33	0
Mon, Oct 5	$11.33	0.00	0.0%	$11.33	$11.33	$11.33	0
Fri, Oct 2	$11.33	0.00	0.0%	$11.33	$11.33	$11.33	0
Thu, Oct 1	$11.33	0.00	0.0%	$11.33	$11.33	$11.33	0
Wed, Sep 30	$11.33	+0.03	+0.3%	$11.30	$11.33	$11.30	1,100
Tue, Sep 29	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	0
Mon, Sep 28	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	0
Fri, Sep 25	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	0
Thu, Sep 24	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	0
Wed, Sep 23	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	100
Tue, Sep 22	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	0
Mon, Sep 21	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	0
Fri, Sep 18	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	200
Thu, Sep 17	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	100
Wed, Sep 16	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	0
Tue, Sep 15	$11.30	-0.207	-1.8%	$11.30	$11.30	$11.30	100
Mon, Sep 14	$11.51	0.00	0.0%	$11.51	$11.51	$11.51	0
Fri, Sep 11	$11.51	+0.207	+1.8%	$11.48	$11.51	$11.48	200
Thu, Sep 10	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	0
Wed, Sep 9	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	0
Tue, Sep 8	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	0
Fri, Sep 4	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	100
Thu, Sep 3	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	0
Wed, Sep 2	$11.30	-0.01	-0.1%	$11.30	$11.30	$11.30	100
Tue, Sep 1	$11.31	+0.01	+0.1%	$11.31	$11.31	$11.31	100
Mon, Aug 31	$11.30	0.00	0.0%	$11.30	$11.30	$11.30	0
Fri, Aug 28	$11.30	-0.09	-0.8%	$11.38	$11.38	$11.30	700
Thu, Aug 27	$11.39	0.00	0.0%	$11.39	$11.39	$11.39	500
Wed, Aug 26	$11.39	0.00	0.0%	$11.39	$11.39	$11.39	0
Tue, Aug 25	$11.39	+0.08	+0.7%	$11.39	$11.39	$11.39	400
Mon, Aug 24	$11.31	-0.08	-0.7%	$11.31	$11.31	$11.31	100
Fri, Aug 21	$11.39	-0.085	-0.7%	$11.35	$11.39	$11.35	7,100
Thu, Aug 20	$11.48	0.00	0.0%	$11.48	$11.48	$11.48	0
Wed, Aug 19	$11.48	0.00	0.0%	$11.48	$11.48	$11.48	0
Tue, Aug 18	$11.48	0.00	0.0%	$11.48	$11.48	$11.48	0
Mon, Aug 17	$11.48	0.00	0.0%	$11.48	$11.48	$11.48	0
Fri, Aug 14	$11.48	0.00	0.0%	$11.48	$11.48	$11.48	0
Thu, Aug 13	$11.48	-0.125	-1.1%	$11.48	$11.48	$11.48	500
Wed, Aug 12	$11.60	0.00	0.0%	$11.60	$11.60	$11.60	0
Tue, Aug 11	$11.60	0.00	0.0%	$11.60	$11.60	$11.60	0
Mon, Aug 10	$11.60	0.00	0.0%	$11.60	$11.60	$11.60	0
Fri, Aug 7	$11.60	0.00	0.0%	$11.60	$11.60	$11.60	0
Thu, Aug 6	$11.60	0.00	0.0%	$11.60	$11.60	$11.60	0
Wed, Aug 5	$11.60	0.00	0.0%	$11.60	$11.60	$11.60	0
Tue, Aug 4	$11.60	0.00	0.0%	$11.60	$11.60	$11.60	0
Mon, Aug 3	$11.60	+0.37	+3.3%	$11.60	$11.60	$11.60	500
Fri, Jul 31	$11.23	0.00	0.0%	$11.23	$11.23	$11.23	0
Thu, Jul 30	$11.23	0.00	0.0%	$11.23	$11.23	$11.23	0
Wed, Jul 29	$11.23	0.00	0.0%	$11.23	$11.23	$11.23	0
Tue, Jul 28	$11.23	0.00	0.0%	$11.23	$11.23	$11.23	0

Ticker: NASDAQ:ATIIU
Asset type: Fund
Sector: Financials
Industry: Shell companies & SPACs
Exchange: NASDAQ
Currency: USD

What changed lately

Latest news release · Oct 16, 2026
Archimedes Tech SPAC Partners II Co. Announces Shareholder Approval of Proposed Business Combination with Forge Nano, Inc.
Latest deck · Apr 20, 2026
SPAC Merger (April 2026)
SPAC merger · 45 slides

Latest news

Archimedes Tech SPAC Partners II Co. Announces Shareholder Approval of Proposed Business Combination with Forge Nano, Inc.

Oct 16, 2026

Closed $9.01 (0.0%) on Oct 19, 2026

Archimedes Tech SPAC Partners II Co. Announces Effectiveness of Registration Statement and Date for Extraordinary General Meeting to Approve Proposed Business Combination with Forge Nano, Inc.

Sep 24, 2026

Closed $11.30 (0.0%) on Sep 25, 2026

Archimedes Tech SPAC Partners II Co. Announces Filing of Third Amendment to Registration Statement on Form S-4 with the SEC

Sep 2, 2026

Closed $11.30 (0.0%) on Sep 3, 2026

Archimedes Tech SPAC Partners II Co. Announces Filing of Amendment to Registration Statement on Form S-4 with the SEC

Jun 23, 2026

Closed $11.76 (-1.1%) on Jun 24, 2026

Archimedes Tech SPAC Partners II Co. Announces Filing of Registration Statement on Form S-4 with the SEC

May 7, 2026

Closed $11.20 (0.0%) on May 8, 2026

Archimedes Tech SPAC Partners III Co. Announces the Upsized Pricing of $240 Million Initial Public Offering

Jan 23, 2026

Closed $11.00 (+4.8%) on Jan 23, 2026

All Archimedes Tech SPAC Partners II Co. news

Decks

SPAC Merger (April 2026)
SPAC merger · 45 slides · Apr 20, 2026

Archimedes Tech SPAC Partners II Co. on 6ix

Sector: Financials
Industry: Shell companies & SPACs
News releases: 6 in the last 12 months · 6 in all · newest Oct 16, 2026 · oldest 2026
Decks: 1 deck · latest Apr 20, 2026

Where Archimedes Tech SPAC Partners II Co. is listed

Listing	Exchange	Country	Currency
NASDAQ:ATII · Home listing	NASDAQ	United States	USD
BOATS:ATII	BOATS	United States	USD
NASDAQ:ATIIU · This page	NASDAQ	United States	USD

NASDAQ:ATIIU Archimedes Tech SPAC Partners II Co. Stock

Prices by listing

Daily closes

What changed lately

Archimedes Tech SPAC Partners II Co. Announces Shareholder Approval of Proposed Business Combination with Forge Nano, Inc.

SPAC Merger (April 2026)

Latest news

Archimedes Tech SPAC Partners II Co. Announces Shareholder Approval of Proposed Business Combination with Forge Nano, Inc.

Archimedes Tech SPAC Partners II Co. Announces Effectiveness of Registration Statement and Date for Extraordinary General Meeting to Approve Proposed Business Combination with Forge Nano, Inc.

Archimedes Tech SPAC Partners II Co. Announces Filing of Third Amendment to Registration Statement on Form S-4 with the SEC

Archimedes Tech SPAC Partners II Co. Announces Filing of Amendment to Registration Statement on Form S-4 with the SEC

Archimedes Tech SPAC Partners II Co. Announces Filing of Registration Statement on Form S-4 with the SEC

Archimedes Tech SPAC Partners III Co. Announces the Upsized Pricing of $240 Million Initial Public Offering

Decks

SPAC Merger (April 2026)

Archimedes Tech SPAC Partners II Co. on 6ix

Where Archimedes Tech SPAC Partners II Co. is listed