
City Office REIT is a reit - office company in the real estate sector on NYSE, led by James Farrar, with a market cap of $280.5M. As of Q3 2025, 74% of shares are held by 146 institutional investors, with Newtyn Management, LLC as the largest holder at 9.76%.
Overview of institutional ownership in CIO as of Q3 2025 with a market cap of $280.9M
Based on market cap of $280.9M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Institutions with the largest positions in CIO as of Q3 2025
| Institution | Position Value |
|---|---|
N Newtyn Management, LLC Hedge Fund•Event Driven | $27.4M 3.36% of portfolio |
B BlackRock, Inc. Institution | $22.8M 0.00% of portfolio |
GLAZER CAPITAL, LLC Hedge Fund•Multi-Strategy | $15.8M 0.72% of portfolio |
VANGUARD GROUP INC Institution | $14.9M 0.00% of portfolio |
N NOMURA HOLDINGS INC Institution | $12.3M 0.07% of portfolio |
F FIL Ltd Institution | $11.2M 0.01% of portfolio |
MORGAN STANLEY RIA/Wealth | $8.1M 0.00% of portfolio |
C Capula Management Ltd Institution | $7.0M 0.05% of portfolio |
Magnetar Financial LLC Hedge Fund•Multi-Strategy | $6.9M 0.04% of portfolio |
GEODE CAPITAL MANAGEMENT LLC ETF Provider | $6.5M 0.00% of portfolio |
Institutional buying and selling activity for CIO in Q3 2025
| Institution | Net Bought |
|---|---|
GLAZER CAPITAL, LLC Hedge Fund•Multi-Strategy | +$15.8M +2.3M shares |
F FIL Ltd Institution | +$11.2M +1.6M shares |
C Capula Management Ltd Institution | +$7.0M +1.0M shares |
Magnetar Financial LLC Hedge Fund•Multi-Strategy | +$6.9M +989.7K shares |
+$5.3M +764.1K shares | |
MORGAN STANLEY RIA/Wealth | +$3.1M +443.9K shares |
GABELLI FUNDS LLC Long Only Manager | +$2.7M +392.3K shares |
C Carmignac Gestion Institution | +$2.6M +375.2K shares |
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy | +$2.4M +347.1K shares |
ARP AMERICAS LLC Hedge Fund•Multi-Strategy | +$1.8M +265.0K shares |
| Institution | Net Sold |
|---|---|
L LSV ASSET MANAGEMENT Long Only Manager | −$10.0M −1.4M shares |
RENAISSANCE TECHNOLOGIES LLC Hedge Fund•Quant | −$4.9M −702.3K shares |
B BlackRock, Inc. Institution | −$4.2M −605.3K shares |
ACADIAN ASSET MANAGEMENT LLC Long Only Manager | −$4.2M −777.3K shares |
MARTINGALE ASSET MANAGEMENT L P Long Only Manager | −$1.2M −218.0K shares |
GSA CAPITAL PARTNERS LLP Hedge Fund•Quant | −$1.1M −156.8K shares |
D D. E. Shaw & Co., Inc. Institution | −$1.1M −154.6K shares |
UBS Group AG Institution | −$892.1K −128.2K shares |
DIMENSIONAL FUND ADVISORS LP Long Only Manager | −$860.0K −123.6K shares |
M MACQUARIE GROUP LTD Institution | −$731.6K −137.0K shares |
Institutions that initiated new positions or completely exited CIO in Q3 2025
| Institution | Position Value |
|---|---|
GLAZER CAPITAL, LLC Hedge Fund•Multi-Strategy | $15.8M 2.3M shares |
F FIL Ltd Institution | $11.2M 1.6M shares |
C Capula Management Ltd Institution | $7.0M 1.0M shares |
GABELLI FUNDS LLC Long Only Manager | $2.7M 392.3K shares |
C Carmignac Gestion Institution | $2.6M 375.2K shares |
ARP AMERICAS LLC Hedge Fund•Multi-Strategy | $1.8M 265.0K shares |
GABELLI SECURITIES INC Hedge Fund•Multi-Strategy | $1.7M 244.1K shares |
Groupe la Francaise Fund of Funds | $1.4M 202.7K shares |
Polar Securities Inc. Hedge Fund•Multi-Strategy | $1.4M 200.0K shares |
C CREDIT INDUSTRIEL ET COMMERCIAL Institution | $940.6K 135.1K shares |
| Institution | Previous Position |
|---|---|
ACADIAN ASSET MANAGEMENT LLC Long Only Manager | $4.2M 777.3K shares |
MARTINGALE ASSET MANAGEMENT L P Long Only Manager | $1.2M 218.0K shares |
M MACQUARIE GROUP LTD Institution | $731.6K 137.0K shares |
PRUDENTIAL FINANCIAL INC Institution | $567.4K 106.3K shares |
LOS ANGELES CAPITAL MANAGEMENT & EQUITY RESEARCH INC Long Only Manager | $380.8K 71.3K shares |
WEDBUSH MORGAN SECURITIES INC RIA/Wealth | $208.3K 39.0K shares |
L LPL Financial LLC Institution | $196.4K 36.8K shares |
H HSBC HOLDINGS PLC Institution | $118.6K 22.1K shares |
D DAVIDSON D A & CO Institution | $99.6K 18.7K shares |
Massey, Quick & Co., LLC RIA/Wealth | $85.8K 16.1K shares |
Institutions with the largest Call and Put options positions in CIO as of Q3 2025
| Institution | Position Value |
|---|---|
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $124.6K 179.0 contracts |
| Institution | Position Value |
|---|---|
Crawford Fund Management, LLC Hedge Fund•Long/Short | $348.0K 500.0 contracts |
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $124.6K 179.0 contracts |
C CSS LLC/IL Institution | $9.0K 13.0 contracts |
Institutions with CIO as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
N Newtyn Management, LLC Hedge Fund•Event Driven | 3.36% $27.4M |
GLAZER CAPITAL, LLC Hedge Fund•Multi-Strategy | 0.72% $15.8M |
0.48% $5.3M | |
ARP AMERICAS LLC Hedge Fund•Multi-Strategy | 0.34% $1.8M |
GABELLI SECURITIES INC Hedge Fund•Multi-Strategy | 0.28% $1.7M |
C CREDIT INDUSTRIEL ET COMMERCIAL Institution | 0.21% $940.6K |
Engine Capital Management, LLC Hedge Fund•Event Driven | 0.19% $1.6M |
Sonora Investment Management Group, LLC RIA/Wealth | 0.12% $1.7M |
P PenderFund Capital Management Ltd. Institution | 0.12% $293.7K |
P Point72 Asia Pte. Ltd. Institution | 0.09% $596.7K |
Discover hedge funds investing in CIO


| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
Medical - Healthcare Information Services Healthcare | $56.2M | 3.82% | |
ETF ETF | $36.0M | 2.45% | |
Unknown Unknown | $26.9M | 1.83% |
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