Company · Ownership research

AGIOS PHARMACEUTICALS, INC. AGIO

CIK 0001439222 · CUSIP 00847X104

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 00847X104 (AGIO), not CUSIP 00847X954 (AGIO), CUSIP 00847X904 (AGIO), and does not merge CUSIPs.

This page lists the top 20 of 238 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$152.28M 5,594,353 shares	0.00%	-10.52K(-0.20%)Reduced	SEC filing ↗ Jan 29, 2026	▾
02	BlackRock, Inc. CIK 2012383 · View history	$142.51M 5,235,429 shares	0.00%	+689.69K(+15.20%)Added	SEC filing ↗ Feb 12, 2026	▾
03	FARALLON CAPITAL MANAGEMENT LLC CIK 909661 · Amended · View history	$140.44M 5,159,505 shares	0.73%	-621.56K(-10.80%)Reduced	SEC filing ↗ Feb 17, 2026	▾
04	STATE STREET CORP CIK 93751 · View history	$84.60M 3,108,145 shares	0.00%	+845.43K(+37.40%)Added	SEC filing ↗ Feb 13, 2026	▾
05	ARMISTICE CAPITAL, LLC CIK 1601086 · View history	$82.64M 3,036,000 shares	2.02%	+2.27M(+297.40%)Added	SEC filing ↗ Feb 17, 2026	▾
06	Erste Asset Management GmbH CIK 2024532 · View history	$76.34M 2,804,900 shares	0.64%	+40.00K(+1.40%)Added	SEC filing ↗ Feb 11, 2026	▾
07	D. E. Shaw & Co., Inc. CIK 1009207 · View history	$50.01M 1,837,186 shares	0.04%	+1.47M(+399.60%)Added	SEC filing ↗ Feb 17, 2026	▾
08	NOMURA ASSET MANAGEMENT INTERNATIONAL INC. CIK 921739 · View history	$46.31M 1,701,409 shares	0.07%	—	SEC filing ↗ Feb 17, 2026	▾
09	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$38.48M 1,413,538 shares	0.00%	-2.78K(-0.20%)Reduced	SEC filing ↗ Feb 9, 2026	▾
10	BNP PARIBAS ASSET MANAGEMENT Holding S.A. CIK 1520354 · View history	$37.04M 1,360,730 shares	0.04%	+373.39K(+37.80%)Added	SEC filing ↗ Feb 13, 2026	▾
11	CITADEL ADVISORS LLC CIK 1423053 · View history	$36.72M 1,348,968 shares	0.02%	+856.99K(+174.20%)Added	SEC filing ↗ Feb 17, 2026	▾
12	MPM BIOIMPACT LLC CIK 1687078 · View history	$35.48M 1,303,373 shares	4.06%	+1.30MNew	SEC filing ↗ Feb 17, 2026	▾
13	Frazier Life Sciences Management, L.P. CIK 1892134 · View history	$34.83M 1,279,754 shares	0.94%	0(0.00%)Unchanged	SEC filing ↗ Feb 13, 2026	▾
14	GW&K Investment Management, LLC CIK 1082917 · View history	$32.86M 1,207,301 shares	0.28%	+354.36K(+41.50%)Added	SEC filing ↗ Feb 11, 2026	▾
15	TCG Crossover Management, LLC CIK 1839948 · View history	$32.17M 1,181,841 shares	1.06%	-248.20K(-17.40%)Reduced	SEC filing ↗ Feb 17, 2026	▾
16	SUSQUEHANNA INTERNATIONAL GROUP, LLP CIK 1446194 · View history	$31.10M 1,142,432 shares	0.04%	+1.14MNew	SEC filing ↗ Feb 17, 2026	▾
17	JANE STREET GROUP, LLC CIK 1595888 · View history	$30.51M 1,121,050 shares	0.04%	+725.93K(+183.70%)Added	SEC filing ↗ Feb 12, 2026	▾
18	GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history	$28.14M 1,033,974 shares	0.00%	+229.21K(+28.50%)Added	SEC filing ↗ Mar 25, 2026	▾
19	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$27.34M 1,004,341 shares	0.01%	-16.86K(-1.70%)Reduced	SEC filing ↗ Feb 12, 2026	▾
20	MORGAN STANLEY CIK 895421 · Amended · View history	$24.34M 894,037 shares	0.00%	+477.04K(+114.40%)Added	SEC filing ↗ May 27, 2026	▾

Showing 20 / 238 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

238

Cancelled or null records excluded

Disclosed shares

61,258,666

Not deduplicated across managers

Disclosed value

$1.67B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

AGIOS PHARMACEUTICALS, INC. · Q4 2025

Explore all 238 reporting institutions.

This page includes 20 of 238 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 238 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"00847X104","quarter":"2025Q4","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.