Company · Ownership research

Annexon, Inc. ANNX

CIK 0001528115 · CUSIP 03589W102

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 03589W102 (ANNX), not CUSIP 03589W902 (ANNX), CUSIP 03589W952 (ANNX), and does not merge CUSIPs.

This page lists the top 20 of 129 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	FMR LLC CIK 315066 · View history	$67.20M 9,372,822 shares	0.00%	-312.58K(-3.20%)Reduced	SEC filing ↗ May 13, 2024	▾
02	Bain Capital Life Sciences Investors, LLC CIK 1703031 · View history	$62.40M 8,703,268 shares	5.02%	+641.55K(+8.00%)Added	SEC filing ↗ May 15, 2024	▾
03	Alerce Investment Management, L.P. CIK 1844002 · View history	$53.10M 7,406,024 shares	55.85%	0(0.00%)Unchanged	SEC filing ↗ May 9, 2024	▾
04	BVF INC/IL CIK 1056807 · View history	$50.19M 7,000,000 shares	1.38%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
05	Redmile Group, LLC CIK 1425738 · View history	$39.46M 5,503,190 shares	1.45%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
06	Point72 Asset Management, L.P. CIK 1603466 · View history	$36.97M 5,156,400 shares	0.11%	+5.16MNew	SEC filing ↗ May 15, 2024	▾
07	BlackRock Inc. CIK 1364742 · View history	$36.16M 5,043,530 shares	0.00%	+1.72M(+52.00%)Added	SEC filing ↗ May 10, 2024	▾
08	ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 1165408 · View history	$30.97M 4,319,975 shares	0.06%	-680.00K(-13.60%)Reduced	SEC filing ↗ May 15, 2024	▾
09	VANGUARD GROUP INC CIK 102909 · View history	$26.87M 3,747,655 shares	0.00%	+1.84M(+96.40%)Added	SEC filing ↗ May 10, 2024	▾
10	Logos Global Management LP CIK 1792126 · View history	$21.87M 3,050,000 shares	2.30%	-1.90M(-38.40%)Reduced	SEC filing ↗ May 15, 2024	▾
11	GMT CAPITAL CORP CIK 1106191 · View history	$18.97M 2,645,524 shares	0.75%	-374.95K(-12.40%)Reduced	SEC filing ↗ May 13, 2024	▾
12	Bellevue Group AG CIK 1674546 · View history	$15.65M 2,182,290 shares	0.24%	+2.18MNew	SEC filing ↗ May 15, 2024	▾
13	Octagon Capital Advisors LP CIK 1839435 · View history	$14.70M 2,050,000 shares	1.79%	0(0.00%)Unchanged	SEC filing ↗ May 15, 2024	▾
14	Woodline Partners LP CIK 1784547 · View history	$14.34M 2,000,609 shares	0.13%	+609(0.00%)Added	SEC filing ↗ May 15, 2024	▾
15	Pictet Asset Management Holding SA CIK 1993888 · View history	$11.79M 1,644,591 shares	0.01%	-158.56K(-8.80%)Reduced	SEC filing ↗ May 14, 2024	▾
16	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$10.25M 1,429,486 shares	0.00%	+507.25K(+55.00%)Added	SEC filing ↗ May 13, 2024	▾
17	Ikarian Capital, LLC CIK 1778253 · Amended · View history	$10.07M 1,405,000 shares	2.74%	-1.25M(-47.00%)Reduced	SEC filing ↗ May 17, 2024	▾
18	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$9.49M 1,323,704 shares	0.00%	+1.31M(+10,482.00%)Added	SEC filing ↗ May 15, 2024	▾
19	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$9.16M 1,278,188 shares	0.01%	+467.17K(+57.60%)Added	SEC filing ↗ May 15, 2024	▾
20	STATE STREET CORP CIK 93751 · View history	$8.59M 1,198,123 shares	0.00%	+351.85K(+41.60%)Added	SEC filing ↗ May 15, 2024	▾

Showing 20 / 129 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

129

Cancelled or null records excluded

Disclosed shares

95,020,692

Not deduplicated across managers

Disclosed value

$679.44M

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.

Annexon, Inc. · Q1 2024

Explore all 129 reporting institutions.

This page includes 20 of 129 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.

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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.