ADC Therapeutics SA
US ˙ NYSE

SecurityADCT / ADC Therapeutics SA
InstitutionUBS Group AG
Latest Disclosed Ownership458,902 shares
Latest Disclosed Value $ 1,720,883
UBS Group AG reports 113.23% increase in ownership of ADCT / ADC Therapeutics SA

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 458,902 shares of ADC Therapeutics SA (US:ADCT) valued at $1,720,882 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 215,212 shares of ADC Therapeutics SA. This represents a change in shares of 113.23% during the quarter. The current value of the position is $605,751 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-05 2026-03-31 13F ADC THERAPEUTICS SHS H0036K147 458,902 243,690 113.23 1,721 126.61 0.0003
2026-01-29 2025-12-31 13F ADC THERAPEUTICS SHS H0036K147 215,212 -47,049 -17.94 760 -27.65 0.0001
2025-11-13 2025-09-30 13F ADC THERAPEUTICS SHS H0036K147 262,261 -565,314 -68.31 1,049 -52.68 0.0002
2025-08-14 2025-06-30 13F ADC THERAPEUTICS SHS H0036K147 827,575 60,511 7.89 2,218 105.09 0.0004
2025-05-13 2025-03-31 13F ADC THERAPEUTICS SHS H0036K147 767,064 -117,454 -13.28 1,082 -38.58 0.0002
2025-02-14 2024-12-31 13F ADC THERAPEUTICS SHS H0036K147 884,518 844,743 2,123.80 1,760 1,308.00 0.0003
2024-11-14 2024-09-30 13F ADC THERAPEUTICS SHS H0036K147 39,775 18,582 87.68 125 89.39 0.0000
2024-08-14 2024-06-30 13F ADC THERAPEUTICS SHS H0036K147 21,193 21,142 41,454.90 67 0.0000
2024-05-13 2024-03-31 13F ADC THERAPEUTICS SHS H0036K147 51 51 0 0.0000
2023-08-11 2023-06-30 13F ADC THERAPEUTICS SHS H0036K147 0 -11,302 -100.00 0 -100.00
2023-05-12 2023-03-31 13F ADC THERAPEUTICS SHS H0036K147 11,302 8,386 287.59 22 100.00 0.0000
2023-02-08 2022-12-31 13F ADC THERAPEUTICS SHS H0036K147 2,916 2,916 11 0.0000
2022-05-16 2022-03-31 13F ADC THERAPEUTICS SHS H0036K147 0 -2,426 -100.00 0 -100.00
2022-02-14 2021-12-31 13F ADC THERAPEUTICS SHS H0036K147 2,426 2,426 49 0.0000
2021-11-15 2021-09-30 13F ADC THERAPEUTICS SHS H0036K147 0 -157 -100.00 0 -100.00
2021-08-13 2021-06-30 13F ADC THERAPEUTICS SHS H0036K147 157 0 0.00 4 0.00 0.0000
2021-05-12 2021-03-31 13F ADC THERAPEUTICS SHS H0036K147 157 -1,308 -89.28 4 -91.49 0.0000
2021-02-11 2020-12-31 13F ADC THERAPEUTICS SHS H0036K147 1,465 1,324 939.01 47 840.00 0.0000
2020-11-12 2020-09-30 13F ADC THERAPEUTICS SHS H0036K147 141 141 5 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.