Who Owns IO BIOTECH INC (IOBT)? -- Institutional Holders (2026-03-31)

24 institutions reported holding $199,038 of IO BIOTECH INC (IOBT) in SEC 13F filings for 2026-03-31. Largest institutional holders: Ikarian Capital, LLC ($81,391), BOOTHBAY FUND MANAGEMENT, LLC ($26,524), GSA CAPITAL PARTNERS LLP ($20,000), MARSHALL WACE, LLP ($18,077), XTX Topco Ltd ($15,602). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1Ikarian Capital, LLC$81,3911.4MHold
2BOOTHBAY FUND MANAGEMENT, LLC$26,524451,852Hold
3GSA CAPITAL PARTNERS LLP$20,000348,352New
4MARSHALL WACE, LLP$18,077301,291Trimmed
5XTX Topco Ltd$15,602265,792Added
6MORGAN STANLEY$12,105206,215Trimmed
7MILLENNIUM MANAGEMENT LLC$11,397194,158Added
8CITIGROUP INC$4,25572,495Trimmed
9JANE STREET GROUP, LLC$3,40357,974New
10Beacon Pointe Advisors, LLC$2,50142,600Trimmed
11GEODE CAPITAL MANAGEMENT, LLC$1,95533,307Hold
12UBS Group AG$1,82830,980Trimmed
13NOVO HOLDINGS A/S$00Exited
14TWO SIGMA SECURITIES, LLC$00Exited
15Hilton Capital Management, LLC$00Exited
16RENAISSANCE TECHNOLOGIES LLC$00Exited
17Virtu Financial LLC$00Exited
18Dauntless Investment Group, LLC$00Exited
19BANK OF AMERICA CORP /DE/$00Exited
20BRIDGEWAY CAPITAL MANAGEMENT, LLC$00Exited
21Scientech Research LLC$00Exited
22ADAR1 Capital Management, LLC$00Exited
23SBI Securities Co., Ltd.$00Exited
24PKS Advisory Services, LLC$00Exited

Source: SEC Form 13F filings · as of 2026-03-31