NASDAQ · ATIIUFinancialsBlank Checks

Archimedes Tech SPAC Partners II Co. Unit (ATIIU)

$11.300.00%
Close Sep 23, 2026 · split-adjusted
Sep 23, 2026$11.30▼ 10.10% in range
Sep 29, 2025Low $10.50 · High $12.57Sep 23, 2026
What changed · written from our data
As of Sep 28, 2026

Archimedes Tech SPAC Partners II Co. Unit closed at $11.30 on Sep 23, down 0.00%, 10.1% below its highest close since Feb 11. Volume of 105 shares was 0.02× its 20-day average (below normal).

Short interest was 626 shares at the Sep 15 settlement, up 340.8% from the prior report (7.7 days to cover).

Market cap$234.6M20.8M shares
Revenue · quarter——
Diluted EPS——
P/E · TTM—
Net margin—
Dividend yieldNone
Range since Feb 1110.50 – 12.57−10.1% from high
Volume1050.02× 20-day avg
Volatility · 60d—Annualised
Short % of float—7.7 days to cover
Net cash—
Next earnings—Not scheduled
Split-adjusted performance
1W 0.0%1M —3M —6M —YTD —1Y —3Y —5Y —

Earnings reactions

History →

No reported quarters with price history yet.

Rank within Blank Checks

Percentile among 164 companies (100 = best)

6-month momentum—
Revenue growth—
Net margin—
Value (low P/E)—
Size—

Industry medians: 6-month return +2.1%, revenue growth −2.0%, net margin −34.2%, P/E 43.1×.

Short interest

Details →
Shares short626+340.8% vs prior
Days to cover7.7Settled Sep 15
% of float—
Short vol. 10d46.8%of daily volume

Closest peers by size in Blank Checks

CompanyPriceToday6MRev. growthNet marginP/EMkt cap
ATIIUArchimedes Tech SPAC Partners II Co. Unit$11.300.00%————$234.6M
RDAGURepublic Digital Acquisition Company Unit$10.53+0.29%————$231.7MCompare
ALDFUAldel Financial II Inc. Units$10.94+0.37%—−10.8%94.8%19.6$225.8MCompare
DMAAUDrugs Made In America Acquisition Corp. Units$10.99+1.85%————$224.2MCompare
TVACUTexas Ventures Acquisition III Corp Unit$10.65−1.11%——−12.6%—$213.0MCompare
GPATUGP-Act III Acquisition Corp. Units$10.99+1.10%————$274.8MCompare
NPACUNew Providence Acquisition Corp. III Units$10.51+0.10%———34.5$283.3MCompare
HAVAUHarvard Ave Acquisition Corporation Unit$10.30+0.68%————$188.9MCompare
NTWOUNewbury Street II Acquisition Corp Unit$11.40−0.87%————$177.8MCompare

Quick answers

What does Archimedes Tech SPAC Partners II Co. Unit do?
Archimedes Tech SPAC Partners II Co is a blank check company.
What is ATIIU's market cap?
$234.64M, based on the Sep 23 close of $11.30.
What sector is ATIIU in?
Financials, in the Blank Checks industry.

About Archimedes Tech SPAC Partners II Co. Unit

Archimedes Tech SPAC Partners II Co is a blank check company.

HQ: Claymont, DEListed Feb 11, 2025

Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology