RNAAtrium Therapeutics, Inc. Common Stock

CSNasdaq (XNAS)·USD

Identity

Security key: 21058
Ticker: RNA
Type: CS — Common Stock
Exchange: Nasdaq(XNAS)
Venue group: NASDAQ
Operating MIC: XNAS
Market: stocks
Locale: us
Currency: USD
Listed: 2026-02-27
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: RNA

Detail

Enriched 2026-08-14 20:47

Market cap: $208,175,675.31
Shares outstanding (class): 17,105,643
Shares outstanding (weighted): 17,105,643
SIC: 2834 PHARMACEUTICAL PREPARATIONS
Employees: 391
Location: SAN DIEGO, CA
Homepage: https://www.aviditybiosciences.com
Description: Atrium Therapeutics Inc is a biopharmaceutical firm focused on developing RNA-based therapeutics for cardiac conditions, including cardiomyopathies. Its platform technology is designed to enable targeted delivery of RNA therapeutics to heart tissue by combining ligand-based targeting approaches with oligonucleotide-based therapies. The company's development pipeline includes programs targeting genetically associated forms of cardiomyopathy, specifically involving the PRKAG2 and PLN genes.

Market cap and share counts drift.

Funds holding this security

99 funds · 100 positions · $39.66M reported value, as of 2026-03-31

All holders →

Fund	Ticker	Position value	% of fund	Balance	Match
T. Rowe Price Health Sciences Fund, Inc. T. ROWE PRICE HEALTH SCIENCES FUND, INC.	—	$8.91M	0.08%	666,325 NS	FIGI
VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS	VTI	$5.94M	0.00%	443,916 NS	FIGI
T. Rowe Price New Horizons Fund, Inc. T. ROWE PRICE NEW HORIZONS FUND, INC.	—	$5.93M	0.05%	443,462 NS	FIGI
iShares Russell 2000 ETF iShares Trust	IWM	$3.99M	0.01%	298,538 NS	FIGI
VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS	VB	$2.26M	0.00%	169,155 NS	FIGI
VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS	VXF	$2.13M	0.00%	159,352 NS	FIGI
Nexpoint Merger Arbitrage Fund NexPoint Funds I	—	$1.81M	0.13%	135,138 NS	FIGI
AQR Diversified Arbitrage Fund AQR Funds	—	$1.68M	0.07%	125,410 NS	FIGI
iShares Russell 2000 Growth ETF iShares Trust	IWO	$1.17M	0.01%	87,545 NS	FIGI
VANGUARD SMALL-CAP VALUE INDEX FUND VANGUARD INDEX FUNDS	VBR	$723.0K	0.00%	54,074 NS	FIGI
VANGUARD SMALL-CAP GROWTH INDEX FUND VANGUARD INDEX FUNDS	VBK	$627.4K	0.00%	46,926 NS	FIGI
The Merger Fund Merger Fund	—	$622.9K	0.03%	46,590 NS	FIGI
T. Rowe Price Health Sciences Portfolio T. ROWE PRICE EQUITY SERIES, INC.	—	$557.5K	0.08%	41,700 NS	FIGI
Master Small Cap Index Series Quantitative Master Series LLC	—	$257.2K	0.01%	19,237 NS	FIGI
iShares Core S&P Total U.S. Stock Market ETF iShares Trust	ITOT	$240.5K	0.00%	17,986 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

TICKERRNA
FIGI_COMPOSITEBBG01Z0T3959
FIGI_SHARE_CLASSBBG01Z0T3B63
CIK0002093101
ISINUS04965N1046
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: Pharmaceuticals
Source: LLMunreviewed
Self-reported confidence: 0.95
Model: deepseek
Rationale: Common stock of a pharmaceutical preparations company, classified under healthcare and pharmaceuticals.

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.