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IO Biotech, Inc.

IOBTDelisted Jun 8, 2026
Industry
Pharmaceutical Preparations
SEC CIK
0001865494

IO Biotech, Inc. was delisted on Jun 8, 2026; its insiders filed their last Form 4 on Jun 6, 2025; 12 institutions reported holding it in 13F filings for Q1 2026, worth $199.0K in total; no superinvestor held it.

13F holders, Q3 2022

Institutional positions in IO Biotech, Inc. as of Sep 30, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
21
+3 vs. Q2 2022
Shares held
15.3M
−118.0K (−0.8%) vs. Q2 2022
Total value
$41.6M
−$30.6M (−42.4%) vs. Q2 2022
New holders
6
3 more added
Sold out
3
3 more reduced

Compare with Q2 2022: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting IOBT on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ3 2022: 21 institutions
Q1 2021: 0 institutionsQ2 2021: 0 institutionsQ3 2021: 0 institutionsQ4 2021: 20 institutionsQ1 2022: 19 institutionsQ2 2022: 18 institutionsQ3 2022: 21 institutionsQ4 2022: 17 institutionsQ1 2023: 17 institutionsQ2 2023: 15 institutionsQ3 2023: 19 institutionsQ4 2023: 18 institutionsQ1 2024: 18 institutionsQ2 2024: 20 institutionsQ3 2024: 20 institutionsQ4 2024: 27 institutionsQ1 2025: 22 institutionsQ2 2025: 26 institutionsQ3 2025: 21 institutionsQ4 2025: 22 institutionsQ1 2026: 12 institutionsQ2 2026: 0 institutions
Value heldQ3 2022: $41.6M
Q1 2021: $0Q2 2021: $0Q3 2021: $0Q4 2021: $92.6MQ1 2022: $76.9MQ2 2022: $72.2MQ3 2022: $41.6MQ4 2022: $32.8MQ1 2023: $26.1MQ2 2023: $24.0MQ3 2023: $41.7MQ4 2023: $55.3MQ1 2024: $47.4MQ2 2024: $30.7MQ3 2024: $24.8MQ4 2024: $18.2MQ1 2025: $20.8MQ2 2025: $25.3MQ3 2025: $3.59MQ4 2025: $4.78MQ1 2026: $199.0KQ2 2026: $0
Institutions holding IOBT and their total value by quarter
QuarterHoldersValue
Q2 20260$0
Q1 202612$199.0K
Q4 202522$4.78M
Q3 202521$3.59M
Q2 202526$25.3M
Q1 202522$20.8M
Q4 202427$18.2M
Q3 202420$24.8M
Q2 202420$30.7M
Q1 202418$47.4M
Q4 202318$55.3M
Q3 202319$41.7M
Q2 202315$24.0M
Q1 202317$26.1M
Q4 202217$32.8M
Q3 202221$41.6M
Q2 202218$72.2M
Q1 202219$76.9M
Q4 202120$92.6M
Q3 20210$0
Q2 20210$0
Q1 20210$0

Institutions, Q3 2022

Shares, value and share of portfolio for each institution holding IO Biotech, Inc.; share changes are against Q2 2022.

Institutions holding IOBT in Q3 2022
InstitutionSharesValue% of portfolioChange in sharesAction
Novo Holdings A/S3,277,932$8.88M0.43%00.0%Unchanged
Vivo Capital, LLC3,015,545$8.17M0.90%00.0%Unchanged
PFM Health Sciences, LP2,159,155$5.85M0.22%00.0%Unchanged
Avoro Capital Advisors LLC2,055,883$5.57M0.10%00.0%Unchanged
Ra Capital Management, L.P.1,857,755$5.04M0.11%00.0%Unchanged
Capital World Investors1,235,000$3.35M0.00%00.0%Unchanged
Samsara BioCapital, LLC1,008,437$2.73M0.64%00.0%Unchanged
Soleus Capital Management, L.P.288,119$781.0K0.11%−367,285−56.0%Reduced
Newtyn Management, LLC100,000$271.0K0.06%+100,000New
Bridgeway Capital Management, LLC95,900$260.0K0.01%+20,900+27.9%Added
Victory Capital Management Inc43,741$119.0K0.00%+43,741New
Citadel Advisors LLC42,180$114.0K0.00%+27,754+192.4%Added
Psagot Value Holdings Ltd. / (Israel)40,846$111.0K0.03%+40,846New
Millennium Management LLC38,322$104.0K0.00%−7,909−17.1%Reduced
Morgan Stanley22,060$60.0K0.00%−2,049−8.5%Reduced
Renaissance Technologies LLC18,423$50.0K0.00%+18,423New
Geode Capital Management, LLC12,730$34.0K0.00%00.0%Unchanged
Cannell Capital LLC12,594$34.0K0.01%+10,402+474.5%Added
Bank of America Corp10,000$27.0K0.00%00.0%Unchanged
Ancora Advisors, LLC908$2.00K0.00%+908New
State of Wyoming28$00.00%+28New
UBS Group AG0$00.00%−2,234−100.0%Sold out
Citigroup Inc0$00.00%−1,000−100.0%Sold out
Tower Research Capital LLC (TRC)0$00.00%−524−100.0%Sold out