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IO Biotech, Inc. (IOBT) institutional ownership

Market cap$146M SectorHealthcare
Funds holding · Q1 2026
21
reported IOBT position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
4 buyers · 17 sellers

IO Biotech, Inc. (IOBT) price and institutional activity

Dates

Q1 2026

$0 bought by 4 investors
Gsa Capital Partners LLPXtx Topco Ltd +2 more
$0 sold by 17 investors
Novo Holdings ABank of America Corp +15 more
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Bought Sold Totals per quarter; hover a bar for the names.

IO Biotech, Inc. (IOBT) institutional activity · 21

Investor Type Est. change Change Δ Own Date
Novo Holdings A · Exited
Change −2.5M Δ Own −100.0% Date Q1 2026
Novo Holdings A Exited· Q1 2026 −2.5M −100.0% Q1 2026
Bank of America Corp · Exited
Change −800K Δ Own −100.0% Date Q1 2026
Bank of America Corp Exited· Q1 2026 −800K −100.0% Q1 2026
Beacon Pointe Advisors, LLC · Reduced
Change −463K Date Q1 2026
Beacon Pointe Advisors, LLC Reduced· Q1 2026 −463K Q1 2026
Dauntless Investment Group, LLC · Exited
Change −452K Δ Own −100.0% Date Q1 2026
Dauntless Investment Group, LLC Exited· Q1 2026 −452K −100.0% Q1 2026
Gsa Capital Partners LLP · New
Change +348K Date Q1 2026
Gsa Capital Partners LLP New· Q1 2026 +348K Q1 2026
Morgan Stanley · Reduced
Change −333K Date Q1 2026
Morgan Stanley Reduced· Q1 2026 −333K Q1 2026
Xtx Topco Ltd · Added
Change +250K Date Q1 2026
Xtx Topco Ltd Added· Q1 2026 +250K Q1 2026
Renaissance Technologies LLC Exited· Q1 2026 −208K −100.0% Q1 2026
Marshall Wace, LLP · Reduced
Change −128K Date Q1 2026
Marshall Wace, LLP Reduced· Q1 2026 −128K Q1 2026
Bridgeway Capital Management, LLC · Exited
Change −75K Δ Own −100.0% Date Q1 2026
Bridgeway Capital Management, LLC Exited· Q1 2026 −75K −100.0% Q1 2026
Jane Street Group, LLC · New
Change +58K Date Q1 2026
Jane Street Group, LLC New· Q1 2026 +58K Q1 2026
Millennium Management LLC · Added
Change +55K Date Q1 2026
Millennium Management LLC Added· Q1 2026 +55K Q1 2026
Two Sigma Securities, LLC · Exited
Change −45K Δ Own −100.0% Date Q1 2026
Two Sigma Securities, LLC Exited· Q1 2026 −45K −100.0% Q1 2026
Citigroup Inc · Reduced
Change −39K Date Q1 2026
Citigroup Inc Reduced· Q1 2026 −39K Q1 2026
Hilton Capital Management, LLC · Exited
Change −26K Δ Own −100.0% Date Q1 2026
Hilton Capital Management, LLC Exited· Q1 2026 −26K −100.0% Q1 2026
Data through Q1 2026 · filed May 15, 2026
15 of 21

Famous investor activity in IO Biotech, Inc. (IOBT)

IO Biotech, Inc. (IOBT) activist and large shareholders

What are Schedules 13D and 13G?

Dates
No Schedule 13D or 13G filing is available for IOBT in this range.

IO Biotech, Inc. (IOBT) ownership FAQ

Who owns IOBT?

21 reporting institutions disclosed IOBT position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.