ATROB close: $17.1 on 2023-08-21 to $78.0 on 2026-08-21.
Split-adj closes · 240 of 3,527 · price returnⓘ
At a glance
Short interest0.9% of sh out
Days to cover5.5d
Top-10 13F concentration100.0%
Next report (est.)2026-11-10
SI 2026-07-31 · 13F 2026-Q1ⓘ
Key fundamentalsFY 2025
P/E (FY)96.3×
Sales (TTM)$942.1M
Earnings (TTM)$79.1M
ROE14.8%
Net margin3.4%
ROIC16.1%
Debt / equity2.39×
Total debt / EBITDA3.40×
Sales growth 3Y17.2%
FY ratios · TTM sales/earnings (USD)ⓘ
Trailing returns
YTD+43.9%
1Y+141.0%
3Y+357.2%
5Y+504.7%
10Y+143.0%
Since incept. (ann.)+15.7%
Total return · from 2012-07-24ⓘ
Risk
Ann. volatility (1Y)65.0%
Ann. volatility (3Y)67.0%
Sharpe (1Y)1.69
Sharpe (3Y)1.10
Max drawdown (1Y)−33.2%
Max drawdown (3Y)−36.0%
Beta (3Y vs SPY)1.37
Daily returns, ann.ⓘ
Top institutional holders13F 2026-Q1
Manager
Shares
Value
% sh out
QoQ
McIlrath & Eck, LLC
1,720
$108,928
—
new
FNY Investment Advisers, LLC
67
$4,000
—
+0.0%
Δ vs 2025-Q4 · % of shares outstanding not shown: no SEC cover-page share count falls within 120 days of the 2026-Q1 quarter end, so any percentage would rest on a count that cannot speak for this quarter. Holder share counts are shown as filed.ⓘ
Latest reported quarterslast report 2026-08-11
Period end
Reported
EPS
EPS YoY
Revenue
Rev YoY
2026-07-04
2026-08-11
$0.75
—
$260.0M
+27.0%
2026-04-04
2026-05-12
—
—
$230.6M
+12.0%
2025-12-31
2026-02-24
$0.83
—
$240.1M
+15.1%
2025-09-27
2025-11-04
—
—
$211.4M
+3.8%
As-reported XBRL · next 2026-11-10 est.ⓘ
Segment mixFY2025 (ended Dec 2025)
Aerospace 92% · Test Systems 8%
business · TAGGED revenueⓘ
Basis & disclosures
EOD closes · nothing imputed or averaged · absent “—”
As-of differs by block · 13F = US long, 45+d lag, LOWER bound
Not investment advice · no recommendation, price target or solicitation
EDGAR + foreign registers · marketstack (licensed EOD) · spzco.com/methodology
