Who owns Genmab A/S?
Institutional ownership of GMAB from SEC Form 13F filings across 204 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
204
13F holders
$1.39B
value, 2026 filers
8.3%
of shares outstanding (50.8M sh)
38
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of GMAB's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | ALLIANCEBERNSTEIN L.P. | 8.6M | $231.9M | 0.1% | 1.4% | -9.5% |
| 2 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 5.0M | $136.7M | 0.1% | 0.8% | 0.0% |
| 3 | BlackRock, Inc. | 4.7M | $128.3M | 0.0% | 0.8% | +3.0% |
| 4 | TWO SIGMA INVESTMENTS, LP | 3.5M | $96.3M | 0.1% | 0.6% | +49.9% |
| 5 | FIRST TRUST ADVISORS LP | 2.8M | $75.7M | 0.0% | 0.4% | +12.0% |
| 6 | CITADEL ADVISORS LLCNEW | 2.5M | $68.0M | 0.0% | 0.4% | new |
| 7 | Qube Research & Technologies Ltd | 1.7M | $46.4M | 0.0% | 0.3% | +149.4% |
| 8 | MORGAN STANLEY | 1.6M | $44.8M | 0.0% | 0.3% | -25.4% |
| 9 | FEDERATED HERMES, INC. | 1.4M | $39.8M | 0.1% | 0.2% | +15.8% |
| 10 | GOLDMAN SACHS GROUP INC | 1.3M | $35.1M | 0.0% | 0.2% | +37.4% |
| 11 | FRANKLIN RESOURCES INC | 1.2M | $33.0M | 0.0% | 0.2% | +0.8% |
| 12 | Pictet Asset Management Holding SA | 1.1M | $29.3M | 0.0% | 0.2% | -1.1% |
| 13 | UBS Group AG | 961,053 | $26.4M | 0.0% | 0.2% | +222.4% |
| 14 | Perpetual Ltd | 919,048 | $25.2M | 0.4% | 0.1% | +21.2% |
| 15 | NORTHERN TRUST CORP | 916,600 | $25.2M | 0.0% | 0.1% | -3.6% |
| 16 | MILLENNIUM MANAGEMENT LLC | 910,604 | $25.0M | 0.0% | 0.1% | +14.9% |
| 17 | Russell Investments Group, Ltd. | 883,430 | $24.3M | 0.0% | 0.1% | +10.8% |
| 18 | ENVESTNET ASSET MANAGEMENT INC | 829,687 | $22.8M | 0.0% | 0.1% | -3.8% |
| 19 | MARSHALL WACE, LLP | 829,659 | $22.8M | 0.0% | 0.1% | +5431.1% |
| 20 | FMR LLC | 764,694 | $21.0M | 0.0% | 0.1% | -24.4% |
| 21 | JPMORGAN CHASE & CO | 744,815 | $19.4M | 0.0% | 0.1% | +234.6% |
| 22 | AMERICAN CENTURY COMPANIES INC | 599,953 | $16.5M | 0.0% | 0.1% | +11.3% |
| 23 | CIBC WORLD MARKET INC. | 514,764 | $14.1M | 0.0% | 0.1% | +5.4% |
| 24 | OPPENHEIMER ASSET MANAGEMENT INC. | 447,426 | $12.3M | 0.1% | 0.1% | -2.2% |
| 25 | MOORE CAPITAL MANAGEMENT, LP | 420,487 | $11.6M | 0.2% | 0.1% | +98.6% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.