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 | |
|---|---|---|---|---|---|---|
|
NSLR
3826
Neostellar Capital Corp
NSLR
$254M
| $286K | ﹤0.01% |
+30,330
| New | +$285K |
|
|
OPRA
3827
PUT
Opera Ltd
OPRA
$1.79B
| $286K | ﹤0.01% |
20,200
-9,900
| -33% | -$146K |
|
3828
PUT
ING
ING
$102B
| $286K | ﹤0.01% |
10,200
-3,000
| -23% | -$77.3K |
|
|
AIRO
3829
CALL
AIRO Group Holdings
AIRO
$268M
| $285K | ﹤0.01% |
+34,900
| New | +$450K |
|
3830
PUT
indie Semiconductor
INDI
$854M
| $285K | ﹤0.01% |
80,800
+9,400
| +13% | +$41.2K |
|
3831
PUT
Aspen Aerogels
ASPN
$518M
| $285K | ﹤0.01% |
100,700
-1,500
| -1% | -$7.74K |
|
3832
CALL
Wolverine World Wide
WWW
$1.55B
| $285K | ﹤0.01% |
15,700
-5,800
| -27% | -$117K |
|
3833
Blue Owl Capital
OBDC
$5.74B
| $285K | ﹤0.01% |
+22,920
| New | +$291K |
|
3834
CALL
Constellium
CSTM
$3.99B
| $285K | ﹤0.01% |
15,100
-3,400
| -18% | -$56.4K |
|
3835
PUT
WillScot Mobile Mini Holdings
WSC
$4.41B
| $284K | ﹤0.01% |
15,100
-49,300
| -77% | -$994K |
|
3836
PUT
Tandem Diabetes Care
TNDM
$1.56B
| $284K | ﹤0.01% |
+12,900
| New | +$233K |
|
3837
Grindr
GRND
$2.95B
| $284K | ﹤0.01% |
+20,939
| New | +$285K |
|
|
CIM
3838
CALL
Chimera Investment
CIM
$1B
| $283K | ﹤0.01% |
22,800
-9,500
| -29% | -$121K |
|
3839
TripAdvisor
TRIP
$1.26B
| $283K | ﹤0.01% |
19,422
-2,182
| -10% | -$33.2K |
|
3840
CALL
Legend Biotech
LEGN
$4.01B
| $280K | ﹤0.01% |
12,900
-6,700
| -34% | -$192K |
|
3841
CALL
Black Stone Minerals
BSM
$3B
| $280K | ﹤0.01% |
+21,100
| New | +$285K |
|
3842
PUT
InfraCap MLP ETF
AMZA
$461M
| $280K | ﹤0.01% |
+13,000
| New | +$513K |
|
3843
PUT
Designer Brands
DBI
$333M
| $280K | ﹤0.01% |
37,700
-37,900
| -50% | -$182K |
|
3844
Allegro MicroSystems
ALGM
$8.16B
| $280K | ﹤0.01% |
10,618
-112,219
| -91% | -$3.09M |
|
3845
CALL
Intrepid Potash
IPI
$469M
| $280K | ﹤0.01% |
+10,100
| New | +$271K |
|
|
NNDM
3846
PUT
Nano Dimension
NNDM
$343M
| $279K | ﹤0.01% |
181,300
-192,800
| -52% | -$327K |
|
3847
Korea Electric Power
KEP
$16B
| $278K | ﹤0.01% |
+16,877
| New | +$267K |
|
3848
CALL
DoubleVerify
DV
$2.03B
| $278K | ﹤0.01% |
24,300
-10,500
| -30% | -$116K |
|
3849
Intellia Therapeutics
NTLA
$1.67B
| $278K | ﹤0.01% |
+30,903
| New | +$425K |
|
3850
PUT
FIGS
FIGS
$2.37B
| $277K | ﹤0.01% |
+24,400
| New | +$229K |
|
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.