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 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$568M |
| 2 |
Amazon
AMZN
|
+$341M |
| 3 |
iShares MSCI South Korea ETF
EWY
|
+$278M |
| 4 |
Apple
AAPL
|
+$239M |
| 5 |
TSMC
TSM
|
+$215M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$316M |
| 2 |
Tesla
TSLA
|
+$253M |
| 3 |
Micron Technology
MU
|
+$178M |
| 4 |
iShares Bitcoin Trust
IBIT
|
+$176M |
| 5 |
SNDK
Sandisk
SNDK
|
+$159M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 97.94% |
| 2 | Technology | 0.92% |
| 3 | Consumer Discretionary | 0.31% |
| 4 | Financials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
601
CALL
Etsy
ETSY
$7.02B
| $49.6M | 0.01% |
657,800
+121,600
| +23% | +$7.84M |
|
602
CALL
CAVA Group
CAVA
$7.1B
| $49.5M | 0.01% |
630,900
-45,500
| -7% | -$3.82M |
|
603
CALL
Alcoa
AA
$13.2B
| $49.3M | 0.01% |
944,800
+80,400
| +9% | +$5.38M |
|
604
CALL
JD.com
JD
$38.2B
| $49.1M | 0.01% |
1,926,200
-503,200
| -21% | -$14.8M |
|
605
CALL
Duke Energy
DUK
$93.7B
| $48.8M | 0.01% |
385,900
+105,300
| +38% | +$13.3M |
|
606
CALL
Revolution Medicines
RVMD
$45B
| $48.8M | 0.01% |
260,600
+186,400
| +251% | +$27.2M |
|
607
PUT
Bristol-Myers Squibb
BMY
$136B
| $48.8M | 0.01% |
846,500
+173,200
| +26% | +$9.95M |
|
608
Iris Energy
IREN
$17.6B
| $48.7M | 0.01% |
1,065,875
+618,765
| +138% | +$32.2M |
|
609
CALL
Ouster
OUST
$2.63B
| $48.7M | 0.01% |
779,200
+472,000
| +154% | +$15.9M |
|
610
PUT
Flutter Entertainment
FLUT
$17.4B
| $48.7M | 0.01% |
476,200
+423,000
| +795% | +$43.6M |
|
611
PUT
SolarEdge
SEDG
$2.1B
| $48.6M | 0.01% |
832,100
+450,800
| +118% | +$23.6M |
|
612
PUT
Core Scientific
CORZ
$5.75B
| $48.3M | 0.01% |
1,889,000
-314,700
| -14% | -$7.41M |
|
613
CALL
Parker-Hannifin
PH
$121B
| $48.2M | 0.01% |
49,300
+8,800
| +22% | +$8.06M |
|
614
CALL
Southwest Airlines
LUV
$19.4B
| $48.2M | 0.01% |
937,100
+144,300
| +18% | +$6.06M |
|
615
PUT
Cheniere Energy
LNG
$60.3B
| $48.2M | 0.01% |
201,600
-140,200
| -41% | -$34.9M |
|
616
CALL
Monolithic Power Systems
MPWR
$60.1B
| $48M | 0.01% |
34,700
+14,900
| +75% | +$22.4M |
|
617
PUT
Wayfair
W
$13.6B
| $47.8M | 0.01% |
517,700
+90,100
| +21% | +$6.64M |
|
618
PUT
Ferrari
RACE
$72.1B
| $47.7M | 0.01% |
128,200
+17,400
| +16% | +$6.05M |
|
619
CALL
Energy Transfer Partners
ET
$74B
| $47.7M | 0.01% |
2,495,800
+567,400
| +29% | +$11M |
|
620
PUT
SLB Ltd
SLB
$85.3B
| $47.7M | 0.01% |
1,025,700
-132,200
| -11% | -$7.08M |
|
621
CALL
FTAI Aviation
FTAI
$20.2B
| $47.6M | 0.01% |
176,000
-247,500
| -58% | -$62.3M |
|
622
PUT
Comcast
CMCSA
$94B
| $47.4M | 0.01% |
1,929,300
+661,300
| +52% | +$17.1M |
|
623
PUT
Constellation Brands
STZ
$21.9B
| $47.2M | 0.01% |
339,200
+51,100
| +18% | +$7.6M |
|
624
Nike
NKE
$57B
| $47M | 0.01% |
1,145,773
+529,689
| +86% | +$23.3M |
|
625
PUT
Interactive Brokers
IBKR
$42B
| $46.9M | 0.01% |
539,200
-19,700
| -4% | -$1.64M |
|
Similar funds
IMC Chicago's Q2 2026 Portfolio in Review
As of Q2 2026, IMC Chicago held 6,955 positions worth $419B, up 50% from $278B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
IMC Chicago's Q2 2026 filing shows 1,282 new, 3,251 increased, 1,751 reduced and 653 closed positions. Its largest new stake was Microsoft: 303,034 shares worth $113M. The largest sale was State Street SPDR S&P 500 ETF Trust, an estimated $316M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- IMC Chicago's largest Q2 2026 buy was Microsoft: 303,034 shares worth $113M.
- IMC Chicago added most to State Street SPDR Dow Jones Industrial Average ETF Trust in Q2 2026, an estimated $568M increase.
- IMC Chicago's biggest Q2 2026 reduction was Tesla, cutting an estimated $253M.
- IMC Chicago fully exited State Street SPDR S&P 500 ETF Trust in Q2 2026, selling an estimated $316M.
- IMC Chicago's ten largest holdings make up 34% of its $419B portfolio in Q2 2026.
- IMC Chicago opened 1,282 new positions and closed 653 in Q2 2026.
- IMC Chicago's portfolio value rose 50% quarter-over-quarter to $419B.
Based on IMC Chicago's 13F filing for Q2 2026, filed 6 Aug 2026.