13F
中

ATRA ATARA BIOTHERAPEUTICS INC

2026Q1 · CUSIP 046513206 · Sector: Healthcare & Biotech

Neutral · No signal
Holders
32
Δ holders QoQ
-9
Breadth percentile
Top 85%
Whale holders
20
Δ whales
-4
Inst. holding value
$12M
New positions
7
Closed positions
16
Price momentum (1Q)
—
Put / Call
0/1

Breadth history (34 quarters)

2024Q3: Δ-10 · h=35 2024Q4: Δ+7 · h=42 2025Q1: Δ-4 · h=38 2025Q2: Δ-5 · h=33 2025Q3: Δ+3 · h=36 2025Q4: Δ+5 · h=41 2026Q1: Δ-9 · h=32 2024Q3: holders=35 2024Q4: holders=42 2025Q1: holders=38 2025Q2: holders=33 2025Q3: holders=36 2025Q4: holders=41 2026Q1: holders=32 -10 -5 +0 +5 +10 283745 24Q324Q425Q125Q225Q325Q426Q1 Δ holders (bar) Holders (line)

Past Lit Events & Aftermath 0 lit events

No lit events in history

Options Sentiment

Put holders
0
QoQ: 0
Call holders
1
QoQ: 0

See methodology →

Fundamentals

PE (TTM)
—
EPS (TTM)
$-1.22
EPS YoY
—
Revenue (TTM)
$0.0B
Revenue YoY
-88.4%
Quarterly Revenue & EPS (4Y)
2024-03-31: $27M 2024-06-30: $29M 2024-09-30: $40M 2024-12-31: $33M 2025-03-31: $98M 2025-06-30: $18M 2025-09-30: $3M 2025-12-31: $2M 2026-03-31: $1M 2023-06-30: EPS -16.91 2023-09-30: EPS -16.40 2023-12-31: EPS -31.16 2024-03-31: EPS -5.65 2024-06-30: EPS -3.10 2024-09-30: EPS -2.93 2024-12-31: EPS 0.27 2025-03-31: EPS 3.50 2025-06-30: EPS 0.19 2025-09-30: EPS -0.32 2025-12-31: EPS -0.80 2026-03-31: EPS -0.29 0M 49M 98M $M -34.28 -15.21 3.85 20222023202420252026 Revenue EPS

Quarterly figures; EPS split-adjusted, early quarters hidden when not calibrable

P/E (TTM) over time
4Y median 4 2025-06-30: PE 11.92025-09-30: PE 3.82025-12-31: PE 1.7 2 7 12 20222023202420252026

P/E = close 47 days after quarter-end (filing date) ÷ TTM EPS then; loss quarters hidden

As of 2026-03-31 · SEC filings (XBRL)