GMAB · Genmab A/S · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 294 13F filersWho Holds GMAB
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 292 filers, like-for-like change +25.1%; actively managed books +28.2%; index-like books -0.8%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 55.3% | 163 | +29.0% |
| Exempt adviser | 2.5% | 3 | +240.1% |
| Adviser | 9.1% | 10 | +34.2% |
| Bank | 3.7% | 20 | +41.8% |
| Broker-dealer | 0.1% | 2 | -27.7% |
| Non-US | 0.2% | 2 | +0.1% |
| Holding company | 8.2% | 7 | -3.7% |
| Benefit plan | 0.0% | 0 | — |
| Insurer | 0.0% | 0 | — |
| Unknown | 20.8% | 85 | +15.6% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 8.7% | 15 | -0.8% |
| Systematic-like | 11.1% | 24 | +125.8% |
| Concentrated | 13.6% | 54 | +63.7% |
| Diversified active | 66.6% | 199 | +14.9% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 27.1% | 184 | -1.0% |
| Medium turnover | 59.8% | 48 | +28.3% |
| High turnover | 12.9% | 39 | +123.6% |
| Unknown | 0.2% | 21 | -7.6% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 1.6% | 35 | +112.7% |
| Medium horizon | 25.4% | 56 | +40.2% |
| Long horizon | 43.3% | 177 | +5.8% |
| Unknown | 29.7% | 24 | +47.3% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 1.2% | 73 | +14.7% |
| $1B to $10B | 33.1% | 104 | +90.0% |
| $10B to $100B | 25.5% | 68 | +0.5% |
| $100B or more | 40.3% | 47 | +11.3% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 2.8% | 107 | -1.7% |
| Pooled investment vehicles | 37.3% | 27 | +56.0% |
| Registered funds and BDCs | 3.2% | 9 | +4.1% |
| Pension and profit sharing plans | 0.0% | 2 | +1.4% |
| Insurance companies | 0.0% | 1 | new |
| Charitable organizations | 0.0% | 1 | 0.0% |
| Governments and sovereign funds | 0.1% | 2 | +72.2% |
| Corporations | 0.0% | 1 | -63.9% |
| Other investment advisers | 0.1% | 5 | -27.8% |
| Diversified | 11.6% | 7 | -8.2% |
| Unknown | 44.7% | 130 | +20.4% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 43.2% | 39 | +55.8% |
| Private equity funds | 0.2% | 7 | -2.7% |
| Venture capital funds | 0.0% | 1 | -3.1% |
| Real estate funds | 0.0% | 2 | -15.5% |
| Liquidity funds | 0.0% | 1 | +3.3% |
| Securitized asset funds | 0.0% | 1 | -0.1% |
| Other private funds | 0.2% | 8 | -3.3% |
| Mixed private funds | 8.5% | 1 | -9.5% |
| Private funds, type not stated | 0.1% | 2 | -0.3% |
| No private funds | 5.6% | 103 | -5.8% |
| Unknown | 42.2% | 127 | +16.0% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 82.0% | 262 | +29.2% |
| Outside the US | 18.0% | 29 | +9.0% |
| Unknown | 0.0% | 1 | 0.0% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 4 holders with no observed 2026-03-31 13F and 3 holders with no observed 2026-06-30 13F.
Conviction and Crowding
292 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $137,275,629 (1 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 77.6% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies GMAB's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | TLK Perusahaan Perseroan Persero Pt Telekomunikasi Indonesia Tbk | 3 |
| 2 | SION Sionna Therapeutics, Inc. | 4 |
| 3 | SPRY ARS Pharmaceuticals, Inc. | 4 |
| 4 | SVRA Savara Inc | 4 |
| 5 | NAMS NewAmsterdam Pharma Co N.V. | 4 |
| 6 | MT ArcelorMittal | 4 |
| 7 | RARE Ultragenyx Pharmaceutical Inc. | 4 |
| 8 | DYN Dyne Therapeutics, Inc. | 4 |
| 9 | TYRA Tyra Biosciences, Inc. | 3 |
| 10 | VERA Vera Therapeutics, Inc. | 4 |
Shareholder Targets
13F filers that own its peers but not GMAB, quarter ended Jun 30, 2026Found through its holder-overlap peers: TLK, SION, SPRY, SVRA, NAMS, MT, RARE, DYN, TYRA, VERA, NWG, JBIO, BMRN, TARS, PCVX, KURA, LEGN, PRAX, ALC, ITUB. 1,262 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC Registered adviser, Index-like | $3,197,085,750 15 held | ALC, BMRN, PRAX |
| 2 | Jupiter Topco LLC Unknown, Diversified active | $3,079,923,015 16 held | PRAX, PCVX, DYN |
| 3 | STATE STREET CORP Bank, Index-like | $2,166,739,100 19 held | BMRN, PRAX, PCVX |
| 4 | RA CAPITAL MANAGEMENT, L.P. Registered adviser, Concentrated | $1,991,712,637 6 held | PCVX, SION, TYRA |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active | $1,783,313,951 16 held | BMRN, PRAX, PCVX |
| 6 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $1,449,907,056 3 held | PCVX, DYN, PRAX |
| 7 | NORGES BANK Non-US, Index-like | $1,399,541,380 7 held | ALC, BMRN, PRAX |
| 8 | PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser, Diversified active | $1,153,168,513 16 held | PRAX, ITUB, PCVX |
| 9 | Invesco Ltd. Adviser, Diversified active | $1,061,420,317 19 held | ALC, PRAX, TARS |
| 10 | Capital Research Global Investors Adviser, Diversified active | $1,024,982,689 3 held | ITUB, BMRN, PCVX |
Fund Ownership of GMAB by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 1.05% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 0.01% | 46,361 |
| Index ETFs | 1.04% | 6,419,882 |
| Active ETFs | 0.04% | 251,014 |
| Active funds | 0.73% | 4,506,100 |
| Unclassified | 0.11% | 656,949 |
| All registered funds | 1.93% | 11,880,306 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mid Paradigm Biocapital Advisors LP Registered adviser | $360,767,108 | 12.25% | 13,133,131 | Shares | 2026-08-14 | |
| Large Orbis Allan Gray Ltd | $312,283,381 | 10.60% | 11,368,161 | Shares | 2026-08-14 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $237,474,771 | 8.06% | 8,644,877 | Shares | 2026-08-14 | |
| Mid DEERFIELD MANAGEMENT COMPANY, L.P. Registered adviser | $188,581,550 | 6.40% | 6,865,000 | Shares | 2026-08-14 | |
| Mid Deep Track Capital, LP Adviser | $155,205,500 | 5.27% | 5,650,000 | Shares | 2026-08-14 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser | $136,672,150 | 4.64% | 4,975,324 | Shares | 2026-08-13 | |
| Mega BlackRock, Inc. Holding company | $128,319,290 | 4.36% | 4,671,252 | Shares | 2026-08-07 | |
| Mid Sofinnova Investments, Inc. | $111,122,056 | 3.77% | 4,045,215 | Shares | 2026-08-14 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $96,635,339 | 3.28% | 3,517,850 | Shares | 2026-08-13 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $96,332,977 | 3.27% | 3,506,843 | Shares | 2026-08-14 | |
| Large Harding Loevner LP Registered adviser | $84,781,155 | 2.88% | 3,086,318 | Shares | 2026-08-14 | |
| Mid Deep Track Capital, LP Adviser | $82,410,000 | 2.80% | 3,000,000 | Call | 2026-08-14 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $75,721,659 | 2.57% | 2,756,522 | Shares | 2026-08-11 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $68,015,471 | 2.31% | 2,475,991 | Shares | 2026-09-02 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $46,404,631 | 1.58% | 1,689,284 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $44,780,518 | 1.52% | 1,630,161 | Shares | 2026-08-13 | |
| Large FEDERATED HERMES, INC. Adviser | $39,814,358 | 1.35% | 1,449,376 | Shares | 2026-08-12 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $35,140,475 | 1.19% | 1,279,231 | Shares | 2026-08-14 | |
| Mega FRANKLIN RESOURCES INC Adviser | $33,044,294 | 1.12% | 1,202,923 | Shares | 2026-08-13 | |
| Mega Pictet Asset Management Holding SA | $29,281,014 | 0.99% | 1,065,927 | Shares | 2026-07-30 | |
| Mega UBS Group AG Bank | $26,400,124 | 0.90% | 961,053 | Shares | 2026-08-13 | |
| Mid Perpetual Ltd Adviser | $25,621,035 | 0.87% | 718,179 | Shares | 2026-10-13 | |
| Mega NORTHERN TRUST CORP Bank | $25,179,000 | 0.85% | 916,600 | Shares | 2026-08-13 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $25,014,291 | 0.85% | 910,604 | Shares | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $24,267,817 | 0.82% | 883,430 | Shares | 2026-08-06 | |
| Mega ENVESTNET ASSET MANAGEMENT INC Registered adviser | $22,791,501 | 0.77% | 829,687 | Shares | 2026-09-23 | |
| Large MARSHALL WACE, LLP Exempt adviser | $22,790,732 | 0.77% | 829,659 | Shares | 2026-08-13 | |
| Large Alyeska Investment Group, L.P. Registered adviser | $22,096,153 | 0.75% | 804,374 | Shares | 2026-08-14 | |
| Mega FMR LLC Holding company | $21,006,143 | 0.71% | 764,694 | Shares | 2026-08-13 | |
| Mega JPMORGAN CHASE & CO Bank | $20,460,064 | 0.69% | 744,815 | Shares | 2026-08-12 | |
| Large Caption Management, LLC Registered adviser | $19,174,060 | 0.65% | 698,000 | Call | 2026-08-14 | |
| Mega AMERICAN CENTURY COMPANIES INC | $16,480,708 | 0.56% | 599,953 | Shares | 2026-08-12 | |
| Large CIBC WORLD MARKET INC. | $14,140,567 | 0.48% | 514,764 | Shares | 2026-08-13 | |
| Mid OPPENHEIMER ASSET MANAGEMENT INC. | $12,290,791 | 0.42% | 447,426 | Shares | 2026-08-03 | |
| Small SUPERSTRING CAPITAL MANAGEMENT LP | $11,828,582 | 0.40% | 430,600 | Shares | 2026-08-14 | |
| Mid MOORE CAPITAL MANAGEMENT, LP Registered adviser | $11,550,777 | 0.39% | 420,487 | Shares | 2026-08-14 | |
| Mid Dixon Mitchell Investment Counsel Inc. | $11,427,520 | 0.39% | 416,000 | Shares | 2026-08-13 | |
| Large Quantinno Capital Management LP Registered adviser | $9,158,168 | 0.31% | 333,388 | Shares | 2026-08-13 | |
| Large Hudson Bay Capital Management LP Registered adviser | $9,065,100 | 0.31% | 330,000 | Shares | 2026-08-14 | |
| Mid SummitTX Capital, L.P. Registered adviser | $8,746,667 | 0.30% | 318,408 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $8,578,881 | 0.29% | 312,300 | Call | 2026-09-02 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $8,340,961 | 0.28% | 303,639 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $7,121,568 | 0.24% | 259,249 | Shares | 2026-08-14 | |
| Mid EAGLE GLOBAL ADVISORS LLC Registered adviser | $6,722,733 | 0.23% | 244,730 | Shares | 2026-07-30 | |
| Large ASSETMARK, INC Registered adviser | $6,559,918 | 0.22% | 238,803 | Shares | 2026-07-30 | |
| Mega JANE STREET GROUP, LLC | $6,518,631 | 0.22% | 237,300 | Call | 2026-08-14 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $6,262,885 | 0.21% | 227,990 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $6,081,858 | 0.21% | 221,400 | Call | 2026-08-14 | |
| Large Caption Management, LLC Registered adviser | $5,487,791 | 0.19% | 199,774 | Shares | 2026-08-14 | |
| Mid FOLKETRYGDFONDET | $4,534,802 | 0.15% | 165,082 | Shares | 2026-08-13 | |
| Mega JANE STREET GROUP, LLC | $4,525,489 | 0.15% | 164,743 | Shares | 2026-08-14 | |
| Large Tidal Investments LLC Registered adviser | $4,460,688 | 0.15% | 162,384 | Shares | 2026-08-13 | |
| Small AIMZ Investment Advisors, LLC Registered adviser | $4,420,197 | 0.15% | 160,910 | Shares | 2026-08-14 | |
| Mega LPL Financial LLC Broker-dealer | $3,964,497 | 0.13% | 144,321 | Shares | 2026-08-07 | |
| Large Schonfeld Strategic Advisors LLC Registered adviser | $3,882,966 | 0.13% | 141,353 | Shares | 2026-08-14 | |
| Large Balyasny Asset Management L.P. Registered adviser | $3,876,017 | 0.13% | 141,100 | Call | 2026-08-14 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $3,821,763 | 0.13% | 139,125 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. Registered adviser | $3,726,223 | 0.13% | 135,647 | Shares | 2026-08-14 | |
| Large Woodline Partners LP Registered adviser | $3,664,140 | 0.12% | 133,387 | Shares | 2026-08-14 | |
| Small Legacy Wealth Asset Management, LLC | $3,565,252 | 0.12% | 99,937 | Shares | 2026-10-09 | |
| Mega ROYAL BANK OF CANADA Bank | $3,513,109 | 0.12% | 127,889 | Shares | 2026-08-14 | |
| Mega Creative Planning Registered adviser | $3,273,571 | 0.11% | 119,169 | Shares | 2026-08-13 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $2,914,675 | 0.10% | 106,104 | Shares | 2026-08-14 | |
| Small Ishara Investments LP Registered adviser | $2,815,675 | 0.10% | 102,500 | Shares | 2026-08-14 | |
| Mega SEI INVESTMENTS CO | $2,508,669 | 0.09% | 91,324 | Shares | 2026-08-14 | |
| Small Integrated Quantitative Investments LLC Registered adviser | $2,492,023 | 0.08% | 90,718 | Shares | 2026-08-14 | |
| Small Terra Nova Asset Management LLC Registered adviser | $2,444,700 | 0.08% | 68,527 | Shares | 2026-10-13 | |
| Large US BANCORP \DE\ Bank | $2,428,896 | 0.08% | 88,420 | Shares | 2026-08-12 | |
| Large Quadrature Capital Ltd | $2,158,290 | 0.07% | 78,569 | Shares | 2026-08-07 | |
| Large Cetera Investment Advisers Registered adviser | $2,100,191 | 0.07% | 76,454 | Shares | 2026-08-12 | |
| Large QRG CAPITAL MANAGEMENT, INC. Registered adviser | $1,995,503 | 0.07% | 72,643 | Shares | 2026-09-23 | |
| Large IMC-Chicago, LLC | $1,966,742 | 0.07% | 71,596 | Shares | 2026-08-06 | |
| Mid Madison Asset Management, LLC Registered adviser | $1,944,354 | 0.07% | 70,781 | Shares | 2026-08-10 | |
| Mega RAYMOND JAMES FINANCIAL INC | $1,911,333 | 0.06% | 69,579 | Shares | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $1,805,081 | 0.06% | 65,711 | Shares | 2026-08-12 | |
| Large NATIXIS ADVISORS, LLC Registered adviser | $1,720,501 | 0.06% | 62,632 | Shares | 2026-08-14 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $1,653,885 | 0.06% | 60,207 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $1,651,109 | 0.06% | 60,106 | Shares | 2026-08-06 | |
| Mega STIFEL FINANCIAL CORP | $1,599,768 | 0.05% | 58,237 | Shares | 2026-08-12 | |
| Mid LEVEL FOUR ADVISORY SERVICES, LLC | $1,593,260 | 0.05% | 58,000 | Shares | 2026-08-10 | |
| Large MML INVESTORS SERVICES, LLC | $1,536,891 | 0.05% | 55,948 | Shares | 2026-08-07 | |
| Mid Vestmark Advisory Solutions, Inc. Registered adviser | $1,532,303 | 0.05% | 55,781 | Shares | 2026-08-14 | |
| Mid Callan Family Office, LLC Registered adviser | $1,511,756 | 0.05% | 55,033 | Shares | 2026-08-11 | |
| Large Mariner, LLC Registered adviser | $1,501,977 | 0.05% | 54,677 | Shares | 2026-08-13 | |
| Large DAVENPORT & Co LLC Registered adviser | $1,481,226 | 0.05% | 41,520 | Shares | 2026-10-14 | |
| Mega BANK OF MONTREAL /CAN/ Bank | $1,429,619 | 0.05% | 52,043 | Shares | 2026-08-12 | |
| Mid INGALLS & SNYDER LLC Registered adviser | $1,396,602 | 0.05% | 50,841 | Shares | 2026-08-14 | |
| Mega NEUBERGER BERMAN GROUP LLC Holding company | $1,388,800 | 0.05% | 50,557 | Shares | 2026-08-13 | |
| Small Avidity Partners Management LP Registered adviser | $1,373,500 | 0.05% | 50,000 | Shares | 2026-08-14 | |
| Large Vanguard Personalized Indexing Management, LLC Registered adviser | $1,360,067 | 0.05% | 49,511 | Shares | 2026-08-11 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $1,346,441 | 0.05% | 49,015 | Shares | 2026-08-11 | |
| Mid Entropy Technologies, LP Registered adviser | $1,336,525 | 0.05% | 48,654 | Shares | 2026-08-13 | |
| Large Pinnacle Financial Partners, Inc. Bank | $1,306,830 | 0.04% | 47,573 | Shares | 2026-08-14 | |
| Large FIFTH THIRD BANCORP Bank | $1,296,062 | 0.04% | 47,181 | Shares | 2026-08-05 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,249,885 | 0.04% | 45,500 | Put | 2026-08-14 | |
| Small BAROMETER CAPITAL MANAGEMENT INC. | $1,247,138 | 0.04% | 45,400 | Shares | 2026-08-12 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $1,244,391 | 0.04% | 45,300 | Put | 2026-09-02 | |
| Large Vident Advisory, LLC Registered adviser | $1,219,667 | 0.04% | 44,400 | Shares | 2026-08-12 | |
| Large Walleye Capital LLC Registered adviser | $1,216,921 | 0.04% | 44,300 | Call | 2026-08-03 | |
| Large ExodusPoint Capital Management, LP Registered adviser | $1,185,934 | 0.04% | 43,172 | Shares | 2026-08-14 |
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