13FBOX
CITIGROUP INC · 13F Institutional Holdings
Options Calculator Rankings
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CITIGROUP INC

C
Institutions
12
Combined AUM (Q2 2026)
$2.05B
Combined Shares (Q2 2026)
14.6M
Overall Trend
Decrease
All institutions combined
Basis: holder count and combined value / shares merge all share classes of the same company (e.g. Class A / C); each institution is counted once, and value & shares are the sum across classes.
📥 Inflow (Q1 2026→Q2 2026)
+743,200
5 institutions added · 1 new buys
Est. buy amount
📤 Outflow (Q1 2026→Q2 2026)
-6.9M
10 institutions reduced · 3 exits
Est. sell amount
⚖️ Net Share Change
-6.1M
Net Sell
💰 Est. Net Value
≈ —
est. price
Latest AUM (Q2 2026)
$2.05B
Institutions
12
New Buys
1
Adds
4
Reduces
7
Exits
3
Unchanged
0
Ownership TrendPortfolio %Prev Q %RankQ2 2026 ValueQ2 2026 SharesPrev Q ValuePrev Q SharesShares ChangeAction
Optiver Holding B.V.
0.19%0.18%#4$688.3M4.9M$526.6M4.6M+274,800+5.92%Add
IMC-Chicago, LLC
0.09%0.12%#8$387.8M2.8M$322.2M2.8M-70,100-2.47%Reduce
CMT Capital Markets Trading GmbH
1.61%3.16%#1$210.4M1.5M$275.4M2.4M-925,000-38.09%Reduce
Assenagon Asset Management S.A.
0.25%0.55%#2$198.7M1.4M$363.5M3.2M-1.8M-55.69%Reduce
SIMPLEX TRADING, LLC
0.11%0.13%#7$181.7M1.3M$193.0M1.7M-403,600-23.72%Reduce
JPMORGAN CHASE & CO
0.01%0.02%#12$113.8M798,400$246.8M2.3M-1.5M-65.30%Reduce
GROUP ONE TRADING LLC
0.14%0.12%#5$104.9M749,400$62.0M547,100+202,300+36.98%Add
HRT FINANCIAL LP
0.14%0.09%#6$78.2M559,000$34.5M304,400+254,600+83.64%Add
SG Americas Securities, LLC
0.03%<0.01%#11$60.8M434,600$6,9042.4M-2.0M-81.92%Reduce
Capital Markets Trading UK LLP
0.2%0.24%#3$19.8M141,300$15.8M139,300+2,000+1.44%Add
Maven Securities LTD
0.05%0.09%#9$2.3M16,600$4.9M43,300-26,700-61.66%Reduce
DV Trading LLC
0.04%#10$1.3M9,500$00+9,500New Buy

🧭 Institutional Sector Flow Heatmap

Net Outflow Net Inflow