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 | |
|---|---|---|---|---|---|---|
1976
CALL
M&T Bank
MTB
$36.6B
| $3.59M | ﹤0.01% |
17,800
+500
| +3% | +$95.5K |
|
1977
PUT
CoinShares ETF Trust CoinShares Bitcoin Mining ETF
WGMI
$234M
| $3.59M | ﹤0.01% |
93,700
+27,000
| +40% | +$1.32M |
|
1978
CALL
GigaCloud Technology
GCT
$1.84B
| $3.58M | ﹤0.01% |
91,200
-17,500
| -16% | -$579K |
|
1979
CALL
International Flavors & Fragrances
IFF
$21.7B
| $3.58M | ﹤0.01% |
53,100
+16,000
| +43% | +$1.04M |
|
1980
Toast
TOST
$20.2B
| $3.57M | ﹤0.01% |
100,633
+21,284
| +27% | +$767K |
|
1981
Sportradar
SRAD
$3.92B
| $3.57M | ﹤0.01% |
150,214
+118,320
| +371% | +$2.85M |
|
1982
PUT
Ecolab
ECL
$79.8B
| $3.57M | ﹤0.01% |
13,600
-1,100
| -7% | -$293K |
|
1983
PUT
Carlyle Group
CG
$17.4B
| $3.57M | ﹤0.01% |
60,400
-5,700
| -9% | -$324K |
|
1984
CALL
GDS Holdings
GDS
$6.59B
| $3.56M | ﹤0.01% |
102,100
-210,000
| -67% | -$7.26M |
|
1985
PUT
Aehr Test Systems
AEHR
$3.77B
| $3.56M | ﹤0.01% |
176,400
-19,400
| -10% | -$469K |
|
|
SGI
1986
CALL
Somnigroup International
SGI
$13.8B
| $3.55M | ﹤0.01% |
39,800
+13,800
| +53% | +$1.21M |
|
1987
PUT
Canadian National Railway
CNI
$76.4B
| $3.55M | ﹤0.01% |
35,900
-22,300
| -38% | -$2.14M |
|
1988
CALL
Western Midstream Partners
WES
$20B
| $3.54M | ﹤0.01% |
89,600
+14,200
| +19% | +$550K |
|
|
VG
1989
CALL
Venture Global Inc
VG
$33.1B
| $3.53M | ﹤0.01% |
+517,400
| New | +$4.31M |
|
|
FLY
1990
CALL
Firefly Aerospace
FLY
$4.38B
| $3.53M | ﹤0.01% |
+157,700
| New | +$3.65M |
|
1991
PUT
TE Connectivity
TEL
$63.1B
| $3.53M | ﹤0.01% |
+15,500
| New | +$3.58M |
|
1992
American Airlines Group
AAL
$10.2B
| $3.53M | ﹤0.01% |
230,032
-552,049
| -71% | -$7.45M |
|
1993
PUT
Sweetgreen
SG
$646M
| $3.52M | ﹤0.01% |
520,300
-193,100
| -27% | -$1.33M |
|
1994
PUT
Globant
GLOB
$1.68B
| $3.52M | ﹤0.01% |
53,800
+25,900
| +93% | +$1.63M |
|
|
CCCX
1995
CALL
DELISTED
Churchill Capital Corp X
CCCX
| $3.51M | ﹤0.01% |
+225,100
| New | +$3.79M |
|
1996
CALL
Amprius Technologies
AMPX
$1.75B
| $3.5M | ﹤0.01% |
443,200
-23,900
| -5% | -$273K |
|
1997
e.l.f. Beauty
ELF
$5.61B
| $3.49M | ﹤0.01% |
45,940
+2,693
| +6% | +$265K |
|
1998
VanEck Junior Gold Miners ETF
GDXJ
$8.5B
| $3.49M | ﹤0.01% |
30,702
-15,909
| -34% | -$1.64M |
|
|
1999
CALL
Canadian National Railway
CNI
$76.4B
| $3.49M | ﹤0.01% |
35,300
-5,400
| -13% | -$519K |
|
2000
CALL
Fortuna Silver Mines
FSM
$3.19B
| $3.48M | ﹤0.01% |
355,200
+104,100
| +41% | +$937K |
|
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.