GMABGENMAB A/S

Smart Money Ownership

Of the 5 tracked institutions holding GMAB, 2 have a 3-year clone track record — 2 of them beat the S&P. Average holder's clone alpha: +7.1pt. It's a gauge of who owns the name, not just how many.

Jim Simons

$118.4M · 0.2% of book

Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →

GMAB (GENMAB A/S) Institutional Ownership Summary

Among the 5 tracked institutional investors we monitor, GMAB (GENMAB A/S) is held with a combined value of $290.79M across 10,838,413 shares. The largest holder is BlackRock, Inc. with a position worth $121.72M. 3 funds increased their holdings. 2 funds reduced their position.

Total Institutional Value

$290.79M

Total Shares Held

10,838,413

Institutional Holders

This Quarter's Biggest Movers

Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.

Biggest Buyers

RENAISSANCE TECHNOLOGIES LLC+26% shares~$24.7M MILLENNIUM MANAGEMENT LLC+738% shares~$18.7M AQR CAPITAL MANAGEMENT LLC+1% shares~$28.7K

Biggest Sellers

BlackRock, Inc.−1% shares~$1.5M

13F Institutional Holders

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BlackRock, Inc.

0.00% of book-1.2%

$121.72M

RENAISSANCE TECHNOLOGIES LLC

MILLENNIUM MANAGEMENT LLC

0.01% of book+737.8%

$21.26M

AQR CAPITAL MANAGEMENT LLC

0.00% of book+1.3%

$2.23M

#	Fund	Value↓	Shares	Portfolio %	Change
1	BlackRock, Inc.	$121.72M	4,536,565	0.00%	-1.2%
2	RENAISSANCE TECHNOLOGIES LLC	$118.44M	4,414,550	0.19%	+26.4%
3	FMR LLC	$27.14M	1,011,726	0.00%	-4.3%
4	MILLENNIUM MANAGEMENT LLC	$21.26M	792,293	0.01%	+737.8%
5	AQR CAPITAL MANAGEMENT LLC	$2.23M	83,279	0.00%	+1.3%

Congress Trading

3 members · 6 disclosed trades in GMAB

Member	Type	Amount	Date
Alan Armstrong	Buy	$1,001 - $15,000	Mar 30, 2026
Josh Gottheimer	Buy	$1,001 - $15,000	Jan 16, 2025
Josh Gottheimer	Sell	$1,001 - $15,000	Dec 16, 2024
Josh Gottheimer	Buy	$1,001 - $15,000

Frequently Asked Questions

Which institutional investors own the most GMAB stock?

As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of GMAB with a position worth $121.72M, representing 0.00% of their portfolio. In total, 5 institutional investors hold GMAB with a combined value of $290.79M.

What percentage of GMAB is owned by institutional investors?

Institutional investors hold $290.79M worth of GMAB stock across 5 positions. The largest institutional holder is BlackRock, Inc. with $121.72M in holdings.

What is a 13F filing and why does it matter for GMAB?

A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For GMAB, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.

Track GMAB institutional moves

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