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 |
Sprott Physical Silver Trust
PSLV
|
+$344M |
| 2 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$297M |
| 3 |
Tesla
TSLA
|
+$235M |
| 4 |
Sprott Physical Gold and Silver Trust
CEF
|
+$177M |
| 5 |
Meta Platforms (Facebook)
META
|
+$120M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$426M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$390M |
| 3 |
NVIDIA
NVDA
|
+$72.8M |
| 4 |
Broadcom
AVGO
|
+$66.7M |
| 5 |
AST SpaceMobile
ASTS
|
+$62.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.58% |
| 2 | Consumer Discretionary | 0.39% |
| 3 | Financials | 0.16% |
| 4 | Communication Services | 0.13% |
| 5 | Industrials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2776
PUT
Unusual Machines
UMAC
$940M
| $1.63M | ﹤0.01% |
131,300
+9,500
| +8% | +$145K |
|
2777
PUT
Franklin Resources
BEN
$16.8B
| $1.63M | ﹤0.01% |
68,900
-17,800
| -21% | -$458K |
|
2778
CALL
Freshpet
FRPT
$2.84B
| $1.63M | ﹤0.01% |
27,600
+4,800
| +21% | +$337K |
|
|
LB
2779
CALL
LandBridge Co
LB
$2.17B
| $1.62M | ﹤0.01% |
23,500
+11,400
| +94% | +$725K |
|
2780
CALL
Compass
COMP
$8.41B
| $1.62M | ﹤0.01% |
221,900
+48,900
| +28% | +$514K |
|
2781
CALL
Constellium
CSTM
$3.99B
| $1.62M | ﹤0.01% |
65,900
+50,800
| +336% | +$1.21M |
|
2782
PUT
Oshkosh
OSK
$9.27B
| $1.62M | ﹤0.01% |
+11,000
| New | +$1.71M |
|
2783
PUT
Aptiv
APTV
$12.3B
| $1.62M | ﹤0.01% |
23,300
-29,300
| -56% | -$2.26M |
|
2784
PUT
Silicon Motion
SIMO
$9.55B
| $1.62M | ﹤0.01% |
+14,400
| New | +$1.75M |
|
2785
ProShares Short Bitcoin Strategy ETF
BITI
$115M
| $1.61M | ﹤0.01% |
+60,416
| New | +$1.53M |
|
2786
CALL
Butterfly Network
BFLY
$1.73B
| $1.61M | ﹤0.01% |
398,600
-166,500
| -29% | -$643K |
|
2787
OneMain Financial
OMF
$6.91B
| $1.61M | ﹤0.01% |
+30,087
| New | +$1.79M |
|
2788
PUT
MKS Inc
MKSI
$23.3B
| $1.61M | ﹤0.01% |
+7,000
| New | +$1.58M |
|
|
FETH
2789
PUT
Fidelity Ethereum Fund
FETH
$1.04B
| $1.61M | ﹤0.01% |
77,000
+19,000
| +33% | +$454K |
|
2790
CALL
Neurocrine Biosciences
NBIX
$17.4B
| $1.61M | ﹤0.01% |
+12,200
| New | +$1.62M |
|
2791
Itron
ITRI
$3.69B
| $1.61M | ﹤0.01% |
+17,914
| New | +$1.72M |
|
2792
PUT
Helmerich & Payne
HP
$3.52B
| $1.6M | ﹤0.01% |
44,500
-27,200
| -38% | -$928K |
|
2793
CALL
Infosys
INFY
$44.3B
| $1.6M | ﹤0.01% |
118,500
+65,700
| +124% | +$1.03M |
|
2794
PUT
GigaCloud Technology
GCT
$1.38B
| $1.6M | ﹤0.01% |
35,200
-11,900
| -25% | -$484K |
|
2795
Kraft Heinz
KHC
$30.8B
| $1.59M | ﹤0.01% |
70,914
-90,209
| -56% | -$2.12M |
|
2796
GDS Holdings
GDS
$6.55B
| $1.59M | ﹤0.01% |
39,544
-15,788
| -29% | -$677K |
|
2797
BigBear.ai
BBAI
$1.38B
| $1.59M | ﹤0.01% |
452,328
+232,802
| +106% | +$1.08M |
|
2798
CALL
Planet Fitness
PLNT
$4.28B
| $1.59M | ﹤0.01% |
21,400
-11,700
| -35% | -$1.03M |
|
2799
CALL
Mirion Technologies
MIR
$4.06B
| $1.59M | ﹤0.01% |
85,500
+1,900
| +2% | +$42.9K |
|
|
AMRZ
2800
Amrize Ltd
AMRZ
$27.4B
| $1.59M | ﹤0.01% |
28,365
+8,846
| +45% | +$507K |
|
Similar funds
IMC Chicago's Q1 2026 Portfolio in Review
As of Q1 2026, IMC Chicago held 6,062 positions worth $278B, up 1.1% from $275B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
IMC Chicago deployed $22.2B of net new capital in Q1 2026, opening 2,049 new positions and adding to 1,848 existing holdings. Its largest new stake was State Street SPDR S&P 500 ETF Trust: 436,397 shares worth $284M.
By sector, the portfolio is most concentrated in Technology at 0.58% of assets, up from 0.56% a quarter earlier, followed by Consumer Discretionary and Financials.
On the sell side, the largest reduction was Broadcom, an estimated $66.7M trimmed.
- IMC Chicago's largest Q1 2026 buy was State Street SPDR S&P 500 ETF Trust: 436,397 shares worth $284M.
- IMC Chicago added most to Sprott Physical Silver Trust in Q1 2026, an estimated $344M increase.
- IMC Chicago's biggest Q1 2026 reduction was Broadcom, cutting an estimated $66.7M.
- IMC Chicago fully exited Invesco QQQ Trust in Q1 2026, selling an estimated $426M.
- IMC Chicago's ten largest holdings make up 38% of its $278B portfolio in Q1 2026.
- IMC Chicago opened 2,049 new positions and closed 389 in Q1 2026.
- IMC Chicago's portfolio value rose 1.1% quarter-over-quarter to $278B.
Based on IMC Chicago's 13F filing for Q1 2026, filed 5 May 2026.