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 |
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 | Held Since | |
|---|---|---|---|---|---|---|---|
626
PUT
ProShares Ultra Bloomberg Natural Gas
BOIL
$238M
| $46.9M | 0.01% |
1,715,900
+338,900
| +25% | +$9.3M |
2022 Q2
16 quarters
|
|
627
PUT
Argan
AGX
$4.64B
| $46.7M | 0.01% |
58,500
-5,800
| -9% | -$3.86M |
2024 Q4
6 quarters
|
|
628
CALL
Tradr 2X Long UPST Daily ETF
UPSX
$14.5M
| $46.7M | 0.01% |
1,080,000
+1,044,100
| +2,908% | +$19.6M |
2026 Q1
1 quarter
|
|
629
CALL
RH
RH
$2.6B
| $46.6M | 0.01% |
283,100
-122,600
| -30% | -$16.9M |
2019 Q3
27 quarters
|
|
630
Adobe
ADBE
$103B
| $46.6M | 0.01% |
+227,295
| New | +$53.8M |
2026 Q2
0 quarters
|
|
631
CALL
MasTec
MTZ
$13.7B
| $46.5M | 0.01% |
111,800
+62,900
| +129% | +$24M |
2023 Q4
10 quarters
|
|
632
Palantir
PLTR
$473B
| $46.5M | 0.01% |
398,565
+120,011
| +43% | +$16.4M |
2025 Q4
2 quarters
|
|
633
PUT
BP
BP
$132B
| $46.4M | 0.01% |
1,255,500
+194,400
| +18% | +$8.53M |
2018 Q4
30 quarters
|
|
634
PUT
Chubb
CB
$137B
| $46.4M | 0.01% |
136,100
+48,300
| +55% | +$15.8M |
2023 Q4
10 quarters
|
|
635
PUT
Casey's General Stores
CASY
$25.8B
| $46.3M | 0.01% |
58,300
+21,600
| +59% | +$17.4M |
2025 Q2
4 quarters
|
|
636
CALL
Onto Innovation
ONTO
$9.8B
| $45.9M | 0.01% |
121,300
+83,300
| +219% | +$23.6M |
2025 Q3
3 quarters
|
|
637
CALL
Rigetti Computing
RGTI
$3.85B
| $45.9M | 0.01% |
2,373,900
+810,400
| +52% | +$15.7M |
2024 Q4
6 quarters
|
|
638
PUT
Dave Inc
DAVE
$4.52B
| $45.8M | 0.01% |
123,000
+88,500
| +257% | +$23M |
2025 Q2
4 quarters
|
|
639
CALL
iShares Gold Trust
IAU
$59.3B
| $45.8M | 0.01% |
606,900
+58,600
| +11% | +$4.97M |
2023 Q3
11 quarters
|
|
640
CALL
Danaher
DHR
$162B
| $45.6M | 0.01% |
239,300
+95,700
| +67% | +$17.4M |
2022 Q4
14 quarters
|
|
641
CALL
CME Group
CME
$109B
| $45.4M | 0.01% |
205,800
+120,600
| +142% | +$33.4M |
2022 Q3
15 quarters
|
|
642
PUT
Applied Digital
APLD
$5.52B
| $45.4M | 0.01% |
1,218,000
-38,900
| -3% | -$1.5M |
2024 Q1
9 quarters
|
|
643
CALL
Duolingo
DUOL
$6.69B
| $45.4M | 0.01% |
394,900
-74,800
| -16% | -$8.19M |
2024 Q1
9 quarters
|
|
644
PUT
Apollo Global Management
APO
$66.6B
| $45.4M | 0.01% |
383,800
-155,400
| -29% | -$19.5M |
2023 Q1
13 quarters
|
|
645
CALL
STMicroelectronics
STM
$39.4B
| $45.3M | 0.01% |
604,800
+319,500
| +112% | +$19.2M |
2024 Q1
9 quarters
|
|
646
CALL
US Bancorp Series B Preferred Stock
USB.PRH
$696M
| $45.2M | 0.01% |
748,100
-10,000
| -1% | -$188K |
2021 Q4
18 quarters
|
|
647
CALL
Wayfair
W
$15.4B
| $45.1M | 0.01% |
488,400
-227,900
| -32% | -$16.8M |
2020 Q1
25 quarters
|
|
648
CALL
Atlassian
TEAM
$57.6B
| $45.1M | 0.01% |
579,600
-29,700
| -5% | -$2.43M |
2020 Q3
23 quarters
|
|
649
PUT
D-Wave Quantum Inc
QBTS
$4.43B
| $45M | 0.01% |
1,876,000
+594,400
| +46% | +$13M |
2024 Q4
6 quarters
|
|
650
CALL
Aehr Test Systems
AEHR
$1.81B
| $45M | 0.01% |
468,300
+132,500
| +39% | +$12.1M |
2024 Q1
9 quarters
|
|
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.