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 |
iShares Russell 2000 ETF
IWM
|
+$302M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$170M |
| 3 |
Broadcom
AVGO
|
+$164M |
| 4 |
Tesla
TSLA
|
+$158M |
| 5 |
Palantir
PLTR
|
+$109M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
iShares Bitcoin Trust
IBIT
|
+$167M |
| 2 |
Applovin
APP
|
+$126M |
| 3 |
JD.com
JD
|
+$103M |
| 4 |
Amazon
AMZN
|
+$97.8M |
| 5 |
Vanguard S&P 500 ETF
VOO
|
+$90.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.56% |
| 2 | Consumer Discretionary | 0.3% |
| 3 | Communication Services | 0.16% |
| 4 | Financials | 0.13% |
| 5 | Industrials | 0.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2926
CALL
UL Solutions
ULS
$15.8B
| $1.06M | ﹤0.01% |
+13,400
| New | +$1.08M |
|
2927
PUT
Digital Turbine
APPS
$1.74B
| $1.06M | ﹤0.01% |
211,200
-2,700
| -1% | -$15.3K |
|
|
AMRZ
2928
Amrize Ltd
AMRZ
$25.6B
| $1.06M | ﹤0.01% |
+19,519
| New | +$996K |
|
2929
PUT
Sensata Technologies
ST
$6.66B
| $1.06M | ﹤0.01% |
31,700
+5,600
| +21% | +$179K |
|
2930
Entegris
ENTG
$22B
| $1.05M | ﹤0.01% |
+12,493
| New | +$1.09M |
|
2931
PUT
Enovix
ENVX
$1.01B
| $1.05M | ﹤0.01% |
143,900
-61,400
| -30% | -$595K |
|
2932
CALL
CNX Resources
CNX
$5.32B
| $1.05M | ﹤0.01% |
28,600
-47,500
| -62% | -$1.7M |
|
2933
PUT
Main Street Capital
MAIN
$5.44B
| $1.05M | ﹤0.01% |
17,400
-800
| -4% | -$47.2K |
|
2934
Zillow
ZG
$7.66B
| $1.05M | ﹤0.01% |
+15,392
| New | +$1.08M |
|
|
SGI
2935
Somnigroup International
SGI
$13.6B
| $1.05M | ﹤0.01% |
11,746
-5,092
| -30% | -$445K |
|
2936
PUT
Liquidia Corp
LQDA
$8.1B
| $1.05M | ﹤0.01% |
+30,400
| New | +$865K |
|
2937
PUT
Church & Dwight Co
CHD
$24.5B
| $1.05M | ﹤0.01% |
12,500
+1,500
| +14% | +$128K |
|
|
SII
2938
CALL
Sprott
SII
$2.97B
| $1.05M | ﹤0.01% |
10,700
-8,800
| -45% | -$780K |
|
2939
CALL
Kodak
KODK
$978M
| $1.05M | ﹤0.01% |
123,700
-23,500
| -16% | -$176K |
|
2940
Portillo's
PTLO
$325M
| $1.05M | ﹤0.01% |
230,182
-6,422
| -3% | -$33.5K |
|
2941
CALL
Timken Company
TKR
$8.77B
| $1.04M | ﹤0.01% |
+12,400
| New | +$986K |
|
2942
LyondellBasell Industries
LYB
$20.2B
| $1.04M | ﹤0.01% |
24,017
-37,550
| -61% | -$1.7M |
|
2943
CALL
Commercial Metals
CMC
$8.1B
| $1.04M | ﹤0.01% |
15,000
-14,100
| -48% | -$883K |
|
|
METD
2944
Direxion Daily META Bear 1X ETF
METD
$9.27M
| $1.04M | ﹤0.01% |
+65,450
| New | +$1.04M |
|
2945
PUT
Atkore
ATKR
$3.17B
| $1.04M | ﹤0.01% |
16,400
+2,700
| +20% | +$176K |
|
2946
CALL
Scholar Rock
SRRK
$6.32B
| $1.04M | ﹤0.01% |
+23,500
| New | +$881K |
|
2947
CALL
indie Semiconductor
INDI
$786M
| $1.03M | ﹤0.01% |
292,300
+65,100
| +29% | +$285K |
|
2948
Cal-Maine
CALM
$3.85B
| $1.03M | ﹤0.01% |
+12,944
| New | +$1.14M |
|
2949
PUT
Varonis Systems
VRNS
$4.87B
| $1.03M | ﹤0.01% |
+31,400
| New | +$1.32M |
|
|
EH
2950
PUT
EHang Holdings
EH
$432M
| $1.03M | ﹤0.01% |
78,100
-202,700
| -72% | -$3.2M |
|
Similar funds
IMC Chicago's Q4 2025 Portfolio in Review
As of Q4 2025, IMC Chicago held 4,538 positions worth $275B, up 0.14% from $275B the previous quarter. Its ten largest holdings account for 36% of the portfolio.
IMC Chicago's Q4 2025 filing shows 985 new, 1,665 increased, 1,358 reduced and 525 closed positions. Its largest new stake was Palantir: 601,853 shares worth $107M. The largest sale was iShares Bitcoin Trust, an estimated $167M.
By sector, the portfolio is most concentrated in Technology at 0.56% of assets, up from 0.33% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- IMC Chicago's largest Q4 2025 buy was Palantir: 601,853 shares worth $107M.
- IMC Chicago added most to iShares Russell 2000 ETF in Q4 2025, an estimated $302M increase.
- IMC Chicago's biggest Q4 2025 reduction was iShares Bitcoin Trust, cutting an estimated $167M.
- IMC Chicago fully exited Amazon in Q4 2025, selling an estimated $97.8M.
- IMC Chicago's ten largest holdings make up 36% of its $275B portfolio in Q4 2025.
- IMC Chicago opened 985 new positions and closed 525 in Q4 2025.
- IMC Chicago's portfolio value rose 0.14% quarter-over-quarter to $275B.
Based on IMC Chicago's 13F filing for Q4 2025, filed 29 Jan 2026.