IMC Chicago Portfolio holdings
IMC-Chicago, a key arm of IMC Trading founded in 1989 by Rob Defares and René Schelvis in Amsterdam, is a proprietary trading firm and market maker headquartered in Chicago since opening its first overseas office there in 2000. Employing over 650 of IMC’s 1,600+ global workforce, it operates at the heart of North America’s financial hub, trading equities, options, futures, and other derivatives on major exchanges like the Chicago Mercantile Exchange (CME) and Chicago Board Options Exchange (CBOE). Known for its technology-driven approach, IMC-Chicago leverages advanced algorithms and low-latency systems to provide liquidity across more than 100 global venues, evolving from a trading outfit with strong tech to a tech company that trades. Under CEO Rob Defares, the firm emphasizes innovation, quantitative strategies, and a collaborative culture, making it a powerhouse in the U.S. derivatives market.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$203M |
| 2 |
JD.com
JD
|
+$105M |
| 3 |
Boeing
BA
|
+$105M |
| 4 |
Applovin
APP
|
+$93.6M |
| 5 |
Netflix
NFLX
|
+$81.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$167M |
| 2 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$146M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$135M |
| 4 |
Pinduoduo
PDD
|
+$128M |
| 5 |
Palantir
PLTR
|
+$108M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.39% |
| 2 | Technology | 0.33% |
| 3 | Communication Services | 0.22% |
| 4 | Industrials | 0.16% |
| 5 | Financials | 0.14% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2826
PUT
BlackSky Technology
BKSY
$1.27B
| $856K | ﹤0.01% |
42,500
+18,100
| +74% | +$353K |
|
2827
CALL
MBIA
MBI
$262M
| $853K | ﹤0.01% |
+114,500
| New | +$726K |
|
2828
WillScot Mobile Mini Holdings
WSC
$4.17B
| $853K | ﹤0.01% |
+40,399
| New | +$1.04M |
|
|
IRBT
2829
CALL
DELISTED
iRobot
IRBT
| $848K | ﹤0.01% |
236,100
-101,300
| -30% | -$392K |
|
2830
Direxion Daily Healthcare Bull 3X ETF
CURE
$190M
| $848K | ﹤0.01% |
+10,148
| New | +$791K |
|
2831
PUT
Brunswick
BC
$5.29B
| $847K | ﹤0.01% |
13,400
-13,200
| -50% | -$819K |
|
2832
PUT
Denison Mines
DNN
$2.95B
| $846K | ﹤0.01% |
307,700
+92,600
| +43% | +$205K |
|
2833
CALL
UGI
UGI
$7.56B
| $841K | ﹤0.01% |
25,300
+12,100
| +92% | +$423K |
|
2834
PUT
W.P. Carey
WPC
$16.3B
| $838K | ﹤0.01% |
+12,400
| New | +$812K |
|
2835
CALL
Portillo's
PTLO
$365M
| $838K | ﹤0.01% |
129,900
-43,100
| -25% | -$364K |
|
2836
ProShares Ultra Health Care
RXL
$90.8M
| $838K | ﹤0.01% |
19,702
+7,771
| +65% | +$315K |
|
2837
Trimble
TRMB
$13.4B
| $835K | ﹤0.01% |
+10,232
| New | +$835K |
|
2838
PUT
iShares Convertible Bond ETF
ICVT
$7.64B
| $835K | ﹤0.01% |
25,000
+14,100
| +129% | +$1.33M |
|
2839
CALL
Trupanion
TRUP
$1.36B
| $831K | ﹤0.01% |
19,200
+100
| +0.5% | +$4.75K |
|
2840
Herbalife
HLF
$1.28B
| $830K | ﹤0.01% |
98,342
-89,469
| -48% | -$844K |
|
2841
PUT
TechnipFMC
FTI
$30.1B
| $828K | ﹤0.01% |
21,000
+8,000
| +62% | +$293K |
|
2842
TG Therapeutics
TGTX
$7.34B
| $827K | ﹤0.01% |
22,903
-4,952
| -18% | -$163K |
|
2843
CALL
abrdn Physical Silver Shares ETF
SIVR
$4.47B
| $827K | ﹤0.01% |
18,600
+7,900
| +74% | +$298K |
|
2844
PUT
Zillow
ZG
$8.15B
| $826K | ﹤0.01% |
+11,100
| New | +$874K |
|
2845
PUT
Nabors Industries
NBR
$1.35B
| $826K | ﹤0.01% |
20,200
+6,600
| +49% | +$235K |
|
2846
PUT
POET Technologies
POET
$1.54B
| $825K | ﹤0.01% |
148,900
+37,200
| +33% | +$210K |
|
2847
CALL
Wyndham Hotels & Resorts
WH
$5.51B
| $823K | ﹤0.01% |
+10,300
| New | +$887K |
|
2848
PUT
PTC Therapeutics
PTCT
$6.01B
| $822K | ﹤0.01% |
+13,400
| New | +$698K |
|
2849
ProShares Ultra MSCI Emerging Markets
EET
$37.4M
| $822K | ﹤0.01% |
10,706
-390
| -4% | -$26.8K |
|
2850
Sprott Junior Uranium Miners ETF
URNJ
$359M
| $821K | ﹤0.01% |
+28,181
| New | +$653K |
|
Similar funds
IMC Chicago's Q3 2025 Portfolio in Review
As of Q3 2025, IMC Chicago held 4,045 positions worth $275B, up 22% from $225B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
IMC Chicago deployed $23.7B of net new capital in Q3 2025, opening 783 new positions and adding to 1,843 existing holdings. Its largest new stake was Netflix: 666,120 shares worth $79.9M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.39% of assets, up from 0.25% a quarter earlier, followed by Technology and Communication Services.
On the sell side, the largest reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, an estimated $135M trimmed.
- IMC Chicago's largest Q3 2025 buy was Netflix: 666,120 shares worth $79.9M.
- IMC Chicago added most to Invesco QQQ Trust in Q3 2025, an estimated $203M increase.
- IMC Chicago's biggest Q3 2025 reduction was State Street SPDR Dow Jones Industrial Average ETF Trust, cutting an estimated $135M.
- IMC Chicago fully exited Apple in Q3 2025, selling an estimated $167M.
- IMC Chicago's ten largest holdings make up 38% of its $275B portfolio in Q3 2025.
- IMC Chicago opened 783 new positions and closed 492 in Q3 2025.
- IMC Chicago's portfolio value rose 22% quarter-over-quarter to $275B.
Based on IMC Chicago's 13F filing for Q3 2025, filed 4 Nov 2025.