ADC Therapeutics SA (ADCT) Ownership
ADCT ownership summary
as of October 18, 2026- Institutions
- 67.6% of shares outstanding
- Insiders
- 14.42% of shares outstanding
- Shares outstanding
- 127.7M
- Float
- 88.6M shares available to trade
- Short interest
- 6.37% 6.9M shares short
- Days to cover
- 4.65 short interest up 9.7% vs prior month
- Institutions 67.57%
- Insiders 14.42%
- Other investors 18.01%
ADCT top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Nantahala Capital Management, LLC | 19.31% | 24.7M | $34.5M | +19.1M (+340.4%) | June 30, 2026 |
| 2 | Redmile Group, LLC | 9.03% | 11.5M | $16.1M | −3.9M (−25.5%) | June 30, 2026 |
| 3 | TCG Crossover Management, LLC | 8.92% | 11.4M | $15.9M | — | June 30, 2026 |
| 4 | Prosight Management, LP | 6.13% | 7.8M | $11.0M | −475,251 (−5.7%) | June 30, 2026 |
| 5 | BlackRock Inc | 5.50% | 7.0M | $9.8M | +769,346 (+12.3%) | June 30, 2026 |
| 6 | Point72 Asset Management, L.P. | 2.86% | 3.6M | $5.1M | +267,015 (+7.9%) | June 30, 2026 |
| 7 | Morgan Stanley - Brokerage Accounts | 2.39% | 3.1M | $4.3M | −761,409 (−20.0%) | June 30, 2026 |
| 8 | Millennium Management LLC | 2.27% | 2.9M | $4.1M | −219,619 (−7.0%) | June 30, 2026 |
| 9 | Citadel Advisors Llc | 1.61% | 2.1M | $2.9M | +1.7M (+413.7%) | June 30, 2026 |
| 10 | The Goldman Sachs Group Inc | 1.50% | 1.9M | $2.7M | +261,398 (+15.8%) | June 30, 2026 |
| 11 | State Street Corp | 1.32% | 1.7M | $2.4M | +119,174 (+7.6%) | June 30, 2026 |
| 12 | Geode Capital Management, LLC | 1.13% | 1.4M | $2.0M | +241,790 (+20.1%) | June 30, 2026 |
| 13 | Bank of America Corp | 1.01% | 1.3M | $1.8M | −36,811 (−2.8%) | June 30, 2026 |
| 14 | Junked Platinum Investment Management Ltd | 0.78% | 991K | $1.4M | — | March 31, 2026 |
| 15 | Vanguard Portfolio Management, LLC | 0.70% | 897K | $1.3M | −136,185 (−13.2%) | June 30, 2026 |
| 16 | Two Sigma Investments LLC | 0.61% | 773K | $1.1M | +105,392 (+15.8%) | June 30, 2026 |
| 17 | Blue Owl Capital Holdings LP | 0.57% | 734K | $1.0M | — | June 30, 2026 |
| 18 | D. E. Shaw & Co LP | 0.56% | 719K | $1.0M | +476,144 (+195.8%) | June 30, 2026 |
| 19 | Opaleye Management Inc | 0.55% | 700K | $980,000 | +700,000 (0.0%) | June 30, 2026 |
| 20 | AQR Capital Management LLC | 0.52% | 658K | $921,375 | +420,488 (+176.9%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 11 holders added 24.1M shares and 6 cut 5.6M.
ADCT top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Russell 2000 ETF | 2.15% | 2.8M | $3.9M | −31,680 (−1.1%) | September 30, 2026 |
| 2 | Fidelity Small Cap Index | 0.90% | 1.2M | $1.6M | +6,653 (+0.6%) | July 31, 2026 |
| 3 | iShares Russell 2000 Value ETF | 0.67% | 859K | $1.2M | +1,302 (+0.2%) | September 30, 2026 |
| 4 | iShares Biotechnology ETF | 0.58% | 739K | $1.0M | −5,600 (−0.8%) | September 30, 2026 |
| 5 | Vanguard Russell 2000 ETF | 0.49% | 620K | $868,641 | +3,889 (+0.6%) | September 30, 2026 |
| 6 | International Biotechnology Ord | 0.33% | 419K | $586,295 | — | June 30, 2026 |
| 7 | iShares Micro-Cap ETF | 0.27% | 344K | $481,312 | −2,371 (−0.7%) | September 30, 2026 |
| 8 | Schwab Small Cap Index | 0.20% | 259K | $362,162 | — | August 31, 2026 |
| 9 | iShares Russell 2000 Growth ETF | 0.16% | 205K | $286,500 | −259 (−0.1%) | September 30, 2026 |
| 10 | iShares Healthcare Innov ETF USD Acc | 0.14% | 178K | $249,754 | +684 (+0.4%) | September 30, 2026 |
| 11 | Vanguard VIF Small Co Gr | 0.14% | 177K | $247,909 | +64,924 (+57.9%) | June 30, 2026 |
| 12 | iShares Russell 2000 Small-Cap Idx Instl | 0.14% | 173K | $242,711 | — | August 31, 2026 |
| 13 | Nuveen Small Cap Blend Idx R6 | 0.12% | 153K | $213,802 | — | August 31, 2026 |
| 14 | Stt Strt SPDR® Russell2000 US SmCapETF | 0.11% | 141K | $197,425 | −9,802 (−6.5%) | September 30, 2026 |
| 15 | Fidelity VIP Disciplined Small Cap Init | 0.10% | 124K | $173,478 | +12,532 (+11.3%) | July 31, 2026 |
| 16 | Fidelity Small Cap Value Index | 0.09% | 116K | $162,429 | — | July 31, 2026 |
| 17 | EQ/2000 Managed Volatility IB | 0.08% | 104K | $146,126 | — | August 31, 2026 |
| 18 | State Street® SPDR® S&P® Intl Sm Cp ETF | 0.07% | 94K | $132,070 | — | September 30, 2026 |
| 19 | iShares Ageing Population ETF USD Acc | 0.07% | 92K | $128,702 | — | September 30, 2026 |
| 20 | Vanguard Russell 2000 Value ETF | 0.06% | 79K | $110,174 | −649 (−0.8%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ADCT insider transactions
latest 6| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-02 | Redmile Group, Llc | Sell | $3.28 | 2,529,491 | $8.3M |
| 2026-04-02 | Redmile Group, Llc | Sell | $3.28 | 2,634,506 | $8.6M |
| 2026-04-01 | Redmile Group, Llc | Sell | $3.80 | 162,517 | $617,565 |
| 2026-04-01 | Redmile Group, Llc | Sell | $3.80 | 169,265 | $643,207 |
| 2026-03-31 | Redmile Group, Llc | Sell | $3.75 | 188,407 | $706,526 |
| 2026-03-31 | Redmile Group, Llc | Sell | $3.75 | 196,229 | $735,859 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
ADCT shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ADCT
Institutional investors own 67.6% of ADC Therapeutics's shares and insiders 14.42%. The largest holder is Nantahala Capital Management, LLC with 19.31% of the shares (24.7M), as of June 30, 2026. Among the top 20 institutions, 11 added shares and 6 reduced their stake in the latest filings. Short interest is 6.37% of the float, or 4.65 days of average trading volume. The share count rose 179.2% since 2018.
Related: ADCT analyst forecast, ADCT key metrics. See the ADCT stock overview for the latest quote and news.
ADCT ownership FAQ
Who owns the most ADC Therapeutics stock?
The largest shareholders of ADC Therapeutics are Nantahala Capital Management, LLC (19.31%), Redmile Group, LLC (9.03%), TCG Crossover Management, LLC (8.92%), Prosight Management, LP (6.13%), BlackRock Inc (5.50%).
What percentage of ADC Therapeutics is owned by institutions?
Institutions hold 67.6% of ADC Therapeutics's shares outstanding; insiders hold 14.42%.
Which funds own ADC Therapeutics?
The largest fund holders of ADC Therapeutics are iShares Russell 2000 ETF (2.15%), Fidelity Small Cap Index (0.90%), iShares Russell 2000 Value ETF (0.67%), iShares Biotechnology ETF (0.58%), Vanguard Russell 2000 ETF (0.49%).
What is ADC Therapeutics's short interest?
6.9M shares of ADC Therapeutics were sold short, 6.37% of the float; at the average daily volume it would take 4.65 days to cover.
Are insiders buying or selling ADC Therapeutics?
Of the latest 6 reported insider transactions in ADC Therapeutics (since March 31, 2026), 0 were purchases and 6 were sales.
How many shares of ADC Therapeutics are outstanding?
ADC Therapeutics has 127.7M shares outstanding, of which 88.6M are in the public float.