ATRAAtara Biotherapeutics, Inc

CSNasdaq (XNAS)·USD

Identity

Security key: 12033
Ticker: ATRA
Type: CS — Common Stock
Exchange: Nasdaq(XNAS)
Venue group: NASDAQ
Operating MIC: XNAS
Market: stocks
Locale: us
Currency: USD
Listed: 2014-10-16
Round lot: 100
Active: Yes
Last seen in a load: 2026-08-14 20:49
Vendor updated: 2026-08-13 06:09
Ticker root / suffix: ATRA

Detail

Enriched 2026-08-14 20:47

Market cap: $83,118,836.7
Shares outstanding (class): 9,010,172
Shares outstanding (weighted): 9,010,172
SIC: 2836 BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
Employees: 13
Location: THOUSAND OAKS, CA
Homepage: https://www.atarabio.com
Description: Atara Biotherapeutics Inc operates in the United States healthcare sector. It focuses on developing transformative therapies for patients with serious diseases, including solid tumors, hematologic cancers, and autoimmune diseases. It operates and manages business as one operating and reportable segment which is the business of developing therapeutics. The company's product candidates comprise Tab-cel, ATA3431, and ATA3219.

Market cap and share counts drift.

Funds holding this security

9 funds · 9 positions · $1.31M reported value, as of 2026-03-31

All holders →

Fund	Ticker	Position value	% of fund	Balance	Match
VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS	VTI	$750.4K	0.00%	158,646 NS	FIGI
VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS	VXF	$266.6K	0.00%	56,372 NS	FIGI
Ultra-Small Company Fund Bridgeway Funds, Inc.	—	$88.4K	0.10%	18,691 NS	FIGI
VIP Disciplined Small Cap Portfolio Variable Insurance Products Fund II	—	$76.8K	0.01%	16,238 NS	FIGI
Ultra-Small Company Market Fund Bridgeway Funds, Inc.	—	$66.2K	0.05%	14,000 NS	FIGI
iShares Micro-Cap ETF iShares Trust	IWC	$49.4K	0.00%	10,445 NS	FIGI
VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX… VANGUARD INSTITUTIONAL INDEX FUNDS	—	$13.5K	0.00%	2,844 NS	FIGI
1290 VT Micro Cap Portfolio EQ Advisors Trust	—	$3.7K	0.00%	776 NS	FIGI
Blackstone Alternative Multi-Strategy Fund Blackstone Alternative Investment Funds	—	-$2.7K	-0.00%	-564 NS	FIGI

How positions resolve to the securities master. FIGI_COMPOSITE is exact identifier equality — both sides got the FIGI from Bloomberg. TICKER is a narrow fallback used only where the master row carries no FIGI at all (2,389 rows do not, disproportionately Irish-domiciled US listings like LIN and ACN). Roughly 22% of all positions resolve to the master.

Funds holding this security

Identifiers

master.security_identifier

TICKERATRA
FIGI_COMPOSITEBBG005Q3MQY4
FIGI_SHARE_CLASSBBG005Q3MR36
CIK0001604464
ISINUS0465132068
Resolved through OpenFIGI from a holdings ISIN, not supplied by the securities vendor.

Identifiers

Classification

classification.v_security_classification

Asset class: Equity
Sector: Health Care
Industry: Biotechnology
Source: LLMunreviewed
Self-reported confidence: 0.95
Model: deepseek
Rationale: Atara Biotherapeutics is a biopharmaceutical company focused on developing T-cell immunotherapies, fitting the biotechnology industry under healthcare.

Classifications are unreviewed model output. All 5,771 assignments carry source = LLM and is_reviewed = false. Confidence is the model’s own estimate and is not calibrated — it clustered at 0.90–0.98 across the whole first pass, including rows that later proved wrong. Use it to order a review queue, not as a probability. Two share classes of one issuer can disagree.

Classification

Fund data

Not linked to a fund series.

Either this is not a fund, or it is one the SEC share-class snapshot cannot reach — commodity trusts and notes have no series ID at all.