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 | |
|---|---|---|---|---|---|---|
|
HIMX
2776
CALL
Himax Technologies
HIMX
$2.56B
| $916K | ﹤0.01% |
103,700
+76,200
| +277% | +$654K |
|
2777
Blue Owl Capital
OWL
$19.7B
| $915K | ﹤0.01% |
+54,075
| New | +$1.03M |
|
|
SAND
2778
PUT
DELISTED
Sandstorm Gold
SAND
| $915K | ﹤0.01% |
73,100
-15,100
| -17% | -$161K |
|
2779
CALL
SS&C Technologies
SSNC
$19.3B
| $914K | ﹤0.01% |
+10,300
| New | +$892K |
|
2780
PUT
RUM Group Inc
RUM
$3.74B
| $912K | ﹤0.01% |
125,900
+12,800
| +11% | +$105K |
|
2781
Comstock Resources
CRK
$3.99B
| $910K | ﹤0.01% |
+45,902
| New | +$849K |
|
2782
PUT
Aramark
ARMK
$16.1B
| $910K | ﹤0.01% |
23,700
-4,700
| -17% | -$190K |
|
2783
PUT
Alcon
ALC
$35.5B
| $909K | ﹤0.01% |
+12,200
| New | +$1.02M |
|
2784
PUT
Altimmune
ALT
$560M
| $907K | ﹤0.01% |
240,700
-124,200
| -34% | -$480K |
|
2785
PUT
Imperial Oil
IMO
$64B
| $907K | ﹤0.01% |
+10,000
| New | +$864K |
|
2786
Global X Defense Tech ETF
SHLD
$7.76B
| $906K | ﹤0.01% |
12,904
-3,948
| -23% | -$248K |
|
|
ARR
2787
PUT
Armour Residential REIT
ARR
$2.37B
| $904K | ﹤0.01% |
60,500
+16,700
| +38% | +$262K |
|
2788
CALL
Hallador Energy
HNRG
$730M
| $902K | ﹤0.01% |
+46,100
| New | +$792K |
|
2789
Kosmos Energy
KOS
$1.51B
| $901K | ﹤0.01% |
542,851
+128,665
| +31% | +$241K |
|
2790
PUT
Ingersoll Rand
IR
$32.7B
| $901K | ﹤0.01% |
+10,900
| New | +$893K |
|
2791
CALL
Ericsson
ERIC
$33.6B
| $899K | ﹤0.01% |
108,700
+46,000
| +73% | +$360K |
|
2792
PUT
Avantor
AVTR
$9.37B
| $899K | ﹤0.01% |
72,000
-33,100
| -31% | -$426K |
|
2793
PUT
US Foods
USFD
$23.8B
| $896K | ﹤0.01% |
+11,700
| New | +$930K |
|
2794
Tidewater
TDW
$4.55B
| $894K | ﹤0.01% |
16,771
+1,684
| +11% | +$92.3K |
|
2795
PUT
CVR Energy
CVI
$3.58B
| $894K | ﹤0.01% |
24,500
-3,800
| -13% | -$114K |
|
2796
PUT
B2Gold
BTG
$6.7B
| $893K | ﹤0.01% |
180,500
-25,200
| -12% | -$99.1K |
|
|
THS
2797
CALL
DELISTED
Treehouse Foods
THS
| $893K | ﹤0.01% |
44,200
+27,500
| +165% | +$521K |
|
2798
POET Technologies
POET
$1.54B
| $892K | ﹤0.01% |
161,078
+18,981
| +13% | +$107K |
|
2799
PUT
Bumble
BMBL
$359M
| $892K | ﹤0.01% |
146,500
-1,100
| -0.7% | -$7.51K |
|
2800
PUT
Array Technologies
ARRY
$796M
| $888K | ﹤0.01% |
109,000
+20,000
| +22% | +$151K |
|
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.