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ADCT · ADC Therapeutics SA · Holdings

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$1.59 +0.00 (+0.00%) Q1 2026 earnings call transcript
Market Cap
$202.99M
Shares
127.67M
Volume · Oct 27 1.25M Avg daily vol (3M) 1.55M

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.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.
Holders: 115
Total Value: $86,650,638
Total Shares: 80,935,600
Showing 1–100 of 117 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 113 13F filers
Top Holder
15.2%
Sep 2023 → Jun 2026 · range 15.2% – 45.1%
of institutional value
Top 5
61.9%
Sep 2023 → Jun 2026 · range 56.3% – 82.0%
of institutional value
Top 10
78.9%
Sep 2023 → Jun 2026 · range 76.5% – 96.2%
of institutional value
HHI
882
Sep 2023 → Jun 2026 · range 848 – 2,557
Broadly held

Who Holds ADCT

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: 113 filers, like-for-like change -3.3%; actively managed books -5.1%; index-like books +4.7%.

Holder type Share Filers Change
Registered adviser 48.7% 53 -5.1%
Exempt adviser 0.0% 1 -18.9%
Adviser 1.0% 2 -23.9%
Bank 6.1% 10 +0.2%
Insurer 0.0% 1 -45.6%
Broker-dealer 0.0% 2 -14.5%
Benefit plan 0.2% 2 +22.1%
Non-US 0.9% 3 -23.8%
Holding company 15.4% 8 +2.1%
Unknown 27.7% 31 -1.8%

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 1 holder with no observed 2026-06-30 13F.

Conviction and Crowding

113 13F filers, quarter ended Jun 30, 2026

Measured 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.

Conviction holders
0
0.000% of filers hold it in their top 10
Mar 31, 2026: 2
Holders above 5%
0
median weight 0.000%
Mar 31, 2026: 1
Crowding
35.4%
of shares outstanding, 88th percentile
Mar 31, 2026: 30.6%
Private-fund advisers
28.4%
of shares outstanding
Institutional ownership
63.5%
72.6% of the estimated free float
Top 10 holders
78.8%
of 13F shares, Herfindahl 0.088
Active holders
-5.1%
like-for-like share change of active filers
5% stakes on record
6
0 13D, 6 13G (2 institutional, 3 passive, 1 exempt)
How long holders have held it value-weighted 11.2 quarters
Under 1 year 4.76% 1 to 3 years 59.0% 3 years or more 36.3% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, 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 avg cost
$5.74
estimated per share
Mar 31, 2026: $6.57
Quarter-end price
$1.07
implied by 13F values
Estimated gain or loss
-81.4%
price against the estimated cost
Estimated at a loss
100.0%
of costed 13F value

Estimated cost covers 98.7% 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 ADCT's active holders also own, quarter ended Jun 30, 2026
# Company Shared holders
1 EDIT Editas Medicine, Inc. 4
2 CDXS Codexis, Inc. 3
3 JANX Janux Therapeutics, Inc. 3
4 AGMB AgomAb Therapeutics NV 3
5 STOK Stoke Therapeutics, Inc. 4
6 AURA Aura Biosciences, Inc. 4
7 SLN Silence Therapeutics plc 3
8 KIDS Orthopediatrics Corp 3
9 TRAX First Tracks Biotherapeutics, Inc. 3
10 PLRX Pliant Therapeutics, Inc. 3

Shareholder Targets

13F filers that own its peers but not ADCT, quarter ended Jun 30, 2026

Found through its holder-overlap peers: EDIT, CDXS, JANX, AGMB, STOK, AURA, SLN, KIDS, TRAX, PLRX, ALEC, ZYME, MBX, ANNX, IMVT, IDYA, BCRX, GLUE, CGON, BHVN. 731 filers in all.

# Filer In peers
1 VANGUARD CAPITAL MANAGEMENT LLC Registered adviser, Index-like $1,134,673,205 18 held
2 RTW INVESTMENTS, LP Registered adviser, Diversified active $925,209,567 4 held
3 EcoR1 Capital, LLC Registered adviser, Concentrated $827,815,014 6 held
4 Jupiter Topco LLC Unknown, Diversified active $674,616,135 13 held
5 T. Rowe Price Investment Management, Inc. Adviser, Diversified active $634,771,572 3 held
6 BAKER BROS. ADVISORS LP Registered adviser, Concentrated $610,486,380 4 held
7 Frazier Life Sciences Management, L.P. Registered adviser, Concentrated $481,893,517 4 held
8 Deep Track Capital, LP Adviser, Diversified active $455,552,356 2 held
9 Decheng Capital LLC Unknown, Concentrated $452,707,082 1 held
10 Woodline Partners LP Registered adviser, Systematic-like $392,547,589 13 held

Fund Ownership of ADCT by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 0.67% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 0.14% 177,701
Index ETFs 0.53% 672,590
Active ETFs 0.25% 319,308
Active funds 0.22% 285,208
Unclassified 0.00% 0
All registered funds 1.14% 1,454,807
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.

Showing 100 of 117
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Holder Value (USD) % of 13F Shares Open

Showing the top 100 of 117 holders. Create a free account to see every holder, past quarters, search, filters and CSV export.

Key facts CIK 1771910 CUSIP H0036K147 13F (30d) 18 filings 18 filers Visit website Investor relations