Citadel Advisors
CIO

Citadel Advisors’s City Office REIT CIO Stock Holding History

Citadel Advisors’s Portfolio CIO Stock Details CIO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q2 		– Sell
-7,500
Closed -$38.9K – 12777
2025
Q1 		$38.9K Sell
7,500
-11,300
-60% -$58K ﹤0.01% 12565
2024
Q4 		$104K Sell
18,800
-9,000
-32% -$49.4K ﹤0.01% 11435
2024
Q3 		$162K Sell
27,800
-1,500
-5% -$8.49K ﹤0.01% 10460
2024
Q2 		$146K Buy
29,300
+20,800
+245% +$100K ﹤0.01% 10390
2024
Q1 		$44.3K Sell
8,500
-14,900
-64% -$75.1K ﹤0.01% 12292
2023
Q4 		$143K Buy
+23,400
New +$109K ﹤0.01% 10454
2023
Q3 		– Sell
-16,200
Closed -$90.2K – 14358
2023
Q2 		$90.2K Sell
16,200
-3,100
-16% -$16.9K ﹤0.01% 11078
2023
Q1 		$133K Buy
19,300
+10,000
+108% +$84.5K ﹤0.01% 10833
2022
Q4 		$77.9K Buy
+9,300
New +$89.5K ﹤0.01% 11558
2022
Q1 		– Sell
-22,100
Closed -$436K – 13675
2021
Q4 		$436K Sell
22,100
-31,700
-59% -$583K ﹤0.01% 10015
2021
Q3 		$961K Buy
53,800
+40,400
+301% +$588K ﹤0.01% 8259
2021
Q2 		$167K Buy
+13,400
New +$155K ﹤0.01% 12385
2020
Q4 		– Sell
-15,700
Closed -$118K – 10957
2020
Q3 		$118K Sell
15,700
-300
-2% -$2.6K ﹤0.01% 9170
2020
Q2 		$161K Buy
16,000
+1,300
+9% +$12K ﹤0.01% 8689
2020
Q1 		$106K Buy
+14,700
New +$175K ﹤0.01% 8595

Other funds holding CIO

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
NM
Newtyn Management New York $936M AUM 27.23% 1-Year Est. Return
GCL
Glazer Capital LLC New York $4.71B AUM 81.93% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
TC
Trium Capital London, United Kingdom $163M AUM 45.8% 1-Year Est. Return
Fidelity International
Fidelity International Hamilton, Bermuda $129B AUM 30.83% 1-Year Est. Return
Nomura Holdings
Nomura Holdings Tokyo, Japan $37.7B AUM 34.44% 1-Year Est. Return
GF
Gabelli Funds Rye, New York $14.8B AUM 32.24% 1-Year Est. Return
MF
Magnetar Financial Evanston, Illinois $9.84B AUM 190.64% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Citadel Advisors's CIO Position: Q4 2025 in Review

Citadel Advisors sold out of City Office REIT (CIO) in Q4 2025, closing a stake of 75,546 shares — an estimated $526K sold.

Citadel Advisors first reported a position in CIO in Q4 2016 and held it in 28 quarters. The position peaked at $8.39M in Q3 2019. 152 funds tracked by Wall St. Rank hold CIO as of Q4 2025.

  • Citadel Advisors reported no remaining City Office REIT position as of Q4 2025 after selling out during the quarter.
  • Citadel Advisors sold 75,546 City Office REIT shares in Q4 2025, an estimated $526K.
  • Citadel Advisors first reported a position in City Office REIT in Q4 2016 and held it in 28 quarters.
  • Citadel Advisors's City Office REIT position peaked at $8.39M in Q3 2019.
  • 152 funds tracked by Wall St. Rank held City Office REIT as of Q4 2025.

Based on Citadel Advisors's 13F filing for Q4 2025, filed 17 Feb 2026.