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IMCR · ARGX in the 13F filings

Two to four stocks side by side among the 95 tracked managers: who lists them, how that has moved, who bought and sold in a quarter, and which managers hold more than one.

IMCRARGX
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023

Holders over time

Tracked managers listing each stock every quarter, at least, or their combined reported value. A gap is a quarter in which no tracked manager listed it. Click a quarter to compare there.
  • IMCR
  • ARGX
0102030202120222023202420252026
Holders and value by quarter
QuarterIMCRARGX
Q3 2020none listed holders, n.a.8 holders, $3.6bn
Q4 2020none listed holders, n.a.7 holders, $4.1bn
Q1 20212 holders, $5.9m8 holders, $4.1bn
Q2 20211 holders, $5.4m9 holders, $4.6bn
Q3 2021none listed holders, n.a.8 holders, $4.5bn
Q4 2021none listed holders, n.a.9 holders, $5.3bn
Q1 20221 holders, $12m8 holders, $5.3bn
Q2 2022none listed holders, n.a.13 holders, $6.5bn
Q3 20222 holders, $32m14 holders, $5.3bn
Q4 20224 holders, $181m13 holders, $5.5bn
Q1 20232 holders, $203m13 holders, $5.9bn
Q2 20234 holders, $416m18 holders, $6.6bn
Q3 20235 holders, $353m21 holders, $8.7bn
Q4 20234 holders, $511m17 holders, $6.3bn
Q1 20246 holders, $609m13 holders, $6.8bn
Q2 20244 holders, $248m14 holders, $7.9bn
Q3 20244 holders, $259m13 holders, $10.7bn
Q4 20244 holders, $232m14 holders, $12.3bn
Q1 20255 holders, $238m17 holders, $11.8bn
Q2 20255 holders, $193m18 holders, $10.8bn
Q3 20254 holders, $205m16 holders, $13.8bn
Q4 20255 holders, $214m16 holders, $14.8bn
Q1 20264 holders, $182m11 holders, $12.3bn
Q2 20264 holders, $248m14 holders, $15.0bn
IMCR

Immunocore HLDGS PLC

Holders
5
Reported value
$238m
Buyers
3
Sellers
2

Breadth +1 among 95 comparable managers.

Pharmaceuticals and biotechnologyBiological productsHealthcare: biopharma and medtech · L3VLUP
ARGX

Argenx Se

Holders
17
Reported value
$11.8bn
Buyers
9
Sellers
9

Breadth 0 among 95 comparable managers.

Pharmaceuticals and biotechnologyBiological productsHealthcare: biopharma and medtech · L3VLUP

Who holds both, Q1 2025

Among the 19 tracked managers listing any of them. "Only" is about listed positions: a manager may hold the other below its listed range.

Only IMCR (2)

Hudson Bay Capital Management LP, Point72 Asset Management LP

Only ARGX (14)

Artisan Partners LP, Capital World Investors, Citadel Advisors LLC, D. E. Shaw & Co., Fidelity (FMR LLC), Holocene Advisors LP, Janus Henderson Group Ltd, Marshall Wace LLP, Millennium Management LLC, Moore Capital Management LP, T. Rowe Price Associates Inc, Two Sigma Investments LP, Verition Fund Management LLC, Voloridge Investment Management LLC

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. Buyers and sellers count comparable managers (those that filed both quarters) by shares, so a rise in value with no rise in shares is the price. Large books are listed to their largest positions. These are 95 tracked managers, not the institutional market.

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