ARGX — ARGENX SEToday's name, from the SEC's present-day ticker list — a present-day mapping, not the name as of each filing.

Congress trades
2
all time
Members · 12m
1
1 buys · 0 sells · by trade date
Latest filing
07-21
2026-07-21
Rows filed past the STOCK Act's 45-day window, stated on the row, never editorialised; both dates and the receipt stay on every row.
1
13F holders
416
all listed · 2026-03-31
Congress: statutory ranges, filed up to 45 days after the trade · 13F: quarter-end snapshots, filed up to 45 days lateras of 2026-10-29
Congress 2Institutional 416

Congress · disclosure timeline

By trade date · 24 months · 1 row ▲ buy, ▼ sell; height = lower bound (log scale). Trade date, not filing date — the filing lag is in the table below.

1 dated disclosure in the window, placed by trade date; magnitudes are the disclosed lower bounds, against gridlines at $15K, $250K, $5M.

Members active in ARGX

12 months · most active first Rows = number of disclosures, not dollars. Net = lower bound of the net range. Committees as of each member's latest trade in the window (roster snapshot 2026-10-29).
Members disclosing ARGX in the trailing 12 months
MemberRowsNet disclosed flow for this ticker: purchases minus sales, computed as a net range on the disclosed amounts. A lower bound is provable, never a point.Number of committees the member sat on as of their latest trade date in the window, from the cc0-legislators roster snapshot. Context, never an allegation; jurisdiction overlap needs the sector join.
Alan Armstrong R–OK1$1.0K to $15.0K2

1 member

Congressional disclosures

Newest filed firstAll 2 rows ↗
Latest congressional filings mentioning ARGX
FiledMemberSide · OwnerTraded · LagAmountRange · FlagsSrc
2026-07-21Alan Armstrong R–OKBUYTraded 03-30 LATE·113d$1K–$15K
2023-08-13Daniel S. Goldman D–NY-10SELLTraded 07-10 +34d$1K–$15K

13F holders · Quarter ended 2026-03-31Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt. · longs only

Top institutional holders of ARGX for quarter 2026-03-31, 1–25 of 416 holders
#FilerValueSecuritiesFlagsderived by Public Filings from this build's reviewed ticker-mapping holders list for this share class; that list carries each holder's share count, share change and filed date, which this table does not show, but no document links — the EDGAR link opens the filer's 13F list·§
1FMR LLC$3.6B1
derived ·§ EDGAR ↗
2Janus Henderson Group Ltd.$1.8B1
derived ·§ EDGAR ↗
3Capital World Investors$1.6B1
derived ·§ EDGAR ↗
4Artisan Partners Limited Partnership$1.1B1
derived ·§ EDGAR ↗
5WELLINGTON MANAGEMENT GROUP LLP$746M1
derived ·§ EDGAR ↗
6Avoro Capital Advisors LLC$730M1
derived ·§ EDGAR ↗
7BlackRock, Inc.$590M1
derived ·§ EDGAR ↗
8RTW INVESTMENTS, LP$518M1
derived ·§ EDGAR ↗
9Invesco Ltd.$434M1
derived ·§ EDGAR ↗
10MORGAN STANLEY$409M1
derived ·§ EDGAR ↗
11ALLIANCEBERNSTEIN L.P.$355M1
derived ·§ EDGAR ↗
12BANK OF AMERICA CORP /DE/$292M1
derived ·§ EDGAR ↗
13SANDS CAPITAL MANAGEMENT, LLC$248M1
derived ·§ EDGAR ↗
14Bellevue Group AG$229M1
derived ·§ EDGAR ↗
15SEI INVESTMENTS CO$210M1
derived ·§ EDGAR ↗
16WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC$194M1
derived ·§ EDGAR ↗
17JENNISON ASSOCIATES LLC$173M1
derived ·§ EDGAR ↗
18FRANKLIN RESOURCES INC$171M1
derived ·§ EDGAR ↗
19Clearbridge Investments, LLC$169M1
derived ·§ EDGAR ↗
20CITADEL ADVISORS LLC$160M1
derived ·§ EDGAR ↗
21Fiera Capital Corp$159M1
derived ·§ EDGAR ↗
22Allspring Global Investments Holdings, LLC$130M1
derived ·§ EDGAR ↗
23AMERICAN CENTURY COMPANIES INC$127M1
derived ·§ EDGAR ↗
24Checkpoint Capital L.P.$112M1
derived ·§ EDGAR ↗
25Legal & General Group Plc$110M1
derived ·§ EDGAR ↗
Show all 416 holders
Truncated by Public Filings. All 336 13F filers reporting this share class are listed. Method ↗

Crowding — not available in this build. No holder rows for the selected period, so no percentile can be ranked.

Congress ↔ notable managers · ARGX

Congress · last 90 days

Buyers
0 — —
Sellers
0 — —

filed 2026-07-31 → 2026-10-29 · statutory ranges

Notable managers · quarter ended 2026-03-31

Adding
1 Bridgewater Associates $887K held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · ARGENX SE

Merged timeline of congressional filings and notable-manager moves on ARGX
DateWhoChangeSize
2026-05-15Bridgewater Associates 13FNEW+1,214 sh
2026-05-15Moore Capital Management 13FEXIT−25,000 sh
2026-05-15Gotham Asset Management 13FEXIT−272 sh

3 newest, by filing date · 13F rows are quarter-end snapshots, not trades

Congress vs filers

12 months
Congress net (rows)1 buy / 0 sell
Congress net ($ bound)$1.0K to $15.0K
Filersnot computedThe filer side needs per-issuer quarter-over-quarter actions, which the published aggregate does not carry for this issuer. Convergence and divergence are stated only when both sides are computed.