How many institutions held IOBTQ - IO Biotech, Inc. - Common Stock, $0.001 Par Value Per Share in Q3 2023?

19 institutional investors reported IOBTQ - IO Biotech, Inc. - Common Stock, $0.001 Par Value Per Share for Q3 2023. Use the holders table for investor-level position and value details.

IO Biotech, Inc. - Common Stock, $0.001 Par Value Per Share (IOBTQ)

Q: What does CUSIP 449778109 represent in this 13F holders report?

CUSIP 449778109 is the security identifier for IOBTQ - IO Biotech, Inc. - Common Stock, $0.001 Par Value Per Share used to aggregate holder disclosures.

CUSIP: 449778109

Q3 2023 13F Holders as of 30 Sep 2023

Type / Class: Equity / Common Stock, $0.001 Par Value Per Share
Shares outstanding: 73,755,848
Total 13F shares: 29,668,665
Share change: +17,421,886
Total reported value: $41,702,613
Price per share: $1.41
Number of holders: 19
Value change: +$24,426,263
Number of buys: 12
Number of sells: 6

Security key

449778109

Report period

Q3 2023

Institutions

Top holders

IOBTQ full security history Newer quarter: Q4 2023 Previous quarter: Q2 2023 IO Biotech, Inc. SEC filings IO Biotech, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 449778109

Newer quarter: Q4 2023 Previous quarter: Q2 2023

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of IOBTQ - IO Biotech, Inc. - Common Stock, $0.001 Par Value Per Share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
Novo Holdings A/S	13F	Company	4.4%	3,277,932	$6,408,357	—	30 Jun 2023	13F
Vivo Capital, LLC	13F	Company	4.1%	3,015,545	$5,895,390	—	30 Jun 2023	13F
Avoro Capital Advisors LLC	13F	Company	2.8%	2,055,883	$4,029,531	—	30 Jun 2023	13F
BANK OF AMERICA CORP /DE/	13F	Company	2.5%	1,854,185	$3,624,932	—	30 Jun 2023	13F
Samsara BioCapital, LLC	13F	Company	1.4%	1,008,437	$1,971,494	—	30 Jun 2023	13F
PFM Health Sciences, LP	13F	Company	0.83%	612,713	$1,197,854	—	30 Jun 2023	13F
BRIDGEWAY CAPITAL MANAGEMENT, LLC	13F	Company	0.18%	132,200	$259,112	—	30 Jun 2023	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.09%	69,100	$135,000	—	30 Jun 2023	13F
MORGAN STANLEY	13F	Company	0.09%	68,948	$134,793	—	30 Jun 2023	13F
Aureus Asset Management, LLC	13F	Company	0.06%	43,744	$85,520	—	30 Jun 2023	13F
Summit Trail Advisors, LLC	13F	Company	0.06%	43,744	$85,520	—	30 Jun 2023	13F
CITADEL ADVISORS LLC	13F	Company	0.05%	37,690	$73,872	—	30 Jun 2023	13F
TWO SIGMA SECURITIES, LLC	13F	Company	0.02%	13,020	$25,454	—	30 Jun 2023	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.02%	12,730	$24,950	—	30 Jun 2023	13F
Ancora Advisors LLC	13F	Company	0%	908	$1,775	—	30 Jun 2023	13F
Invest A/s Lundbeckfond	3/4/5	Director, 10%+ Owner	— mixed-class rows	21,851,920 mixed-class rows	$14,438,960	—	09 Aug 2023	3/4/5
Vivo Capital IX, LLC	3/4/5	10%+ Owner	— mixed-class rows	12,346,878 mixed-class rows	$9,510,598	—	09 Aug 2023	3/4/5
HBM Healthcare Investments (Cayman) Ltd.	3/4/5	10%+ Owner	— class O/S missing	2,690,545	$2,784,714	—	09 Nov 2021	3/4/5
Kurma Partners	3/4/5	10%+ Owner	— class O/S missing	623,428	$645,248	—	09 Aug 2023	3/4/5
Claus A. Andersson	3/4/5	Director	— class O/S missing	1,791,490	$1,854,192	—	09 Nov 2021	3/4/5
Vanessa Malier	3/4/5	Director	— class O/S missing	430,477	$445,544	—	09 Nov 2021	3/4/5
Eva Ehrnrooth	3/4/5	Chief Medical Officer	— class O/S missing	120,000	—	—	20 Mar 2023	3/4/5
Muhammad Al-Hajj	3/4/5	Chief Scientific Officer	— class O/S missing	120,000	—	—	20 Mar 2023	3/4/5
Keith A. Vendola	3/4/5	Chief Financial Officer	— class O/S missing	69,469	—	—	04 Nov 2021	3/4/5
Jack Nielsen	3/4/5	Director	— class O/S missing	41,533	—	—	08 Jun 2023	3/4/5

Institutional Holders of IO Biotech, Inc. - Common Stock, $0.001 Par Value Per Share (IOBTQ) as of Q3 2023

As of 30 Sep 2023, IO Biotech, Inc. - Common Stock, $0.001 Par Value Per Share (IOBTQ) was held by 19 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 29,668,665 shares. The largest 10 holders included Vivo Capital, LLC, Novo Holdings A/S, Samsara BioCapital, LLC, ARMISTICE CAPITAL, LLC, MARSHALL WACE, LLP, Avoro Capital Advisors LLC, Stonepine Capital Management, LLC, BANK OF AMERICA CORP /DE/, PFM Health Sciences, LP, and Alyeska Investment Group, L.P.. This page lists 19 institutional shareholders reporting positions in this security for the Q3 2023 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q3 2023 vs Q2 2023 Across Filers

Q2 2023 holders

Q3 2023 holders

Holder diff

Investor	Q2 2023 Shares	Q3 2023 Shares	Share Diff	Share Chg %	Q2 2023 Value $	Q3 2023 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.