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 | |
|---|---|---|---|---|---|---|---|
3376
PUT
Ecopetrol
EC
$35B
| $1.48M | ﹤0.01% |
104,200
+72,000
| +224% | +$1.04M |
2026 Q1
1 quarter
|
|
3377
Whirlpool
WHR
$1.88B
| $1.48M | ﹤0.01% |
37,621
+26,010
| +224% | +$1.22M |
2026 Q1
1 quarter
|
|
3378
Eldorado Gold
EGO
$8.58B
| $1.48M | ﹤0.01% |
47,676
-2,176
| -4% | -$70.8K |
2026 Q1
1 quarter
|
|
3379
CALL
Macerich
MAC
$6.79B
| $1.48M | ﹤0.01% |
58,800
+20,900
| +55% | +$470K |
2024 Q1
9 quarters
|
|
3380
PUT
Kosmos Energy
KOS
$1.61B
| $1.48M | ﹤0.01% |
701,200
-94,900
| -12% | -$264K |
2024 Q3
7 quarters
|
|
3381
PUT
JBT Marel
JBTM
$5.69B
| $1.48M | ﹤0.01% |
10,200
+3,900
| +62% | +$505K |
2026 Q1
1 quarter
|
|
3382
CALL
Federal Signal
FSS
$7.05B
| $1.48M | ﹤0.01% |
+11,500
| New | +$1.32M |
2026 Q2
0 quarters
|
|
3383
PUT
Park Hotels & Resorts
PK
$3.35B
| $1.48M | ﹤0.01% |
103,600
-700
| -0.7% | -$8.56K |
2026 Q1
1 quarter
|
|
3384
PUT
Meritage Homes
MTH
$4.15B
| $1.48M | ﹤0.01% |
17,600
+4,000
| +29% | +$273K |
2025 Q2
4 quarters
|
|
3385
CALL
Installed Building Products
IBP
$5.27B
| $1.47M | ﹤0.01% |
6,400
+3,200
| +100% | +$777K |
2026 Q1
1 quarter
|
|
3386
PUT
Hartford Financial Services
HIG
$37.8B
| $1.47M | ﹤0.01% |
11,100
+3,700
| +50% | +$495K |
2026 Q1
1 quarter
|
|
3387
PUT
Tetra Tech
TTEK
$9.42B
| $1.47M | ﹤0.01% |
50,900
+39,300
| +339% | +$1.15M |
2026 Q1
1 quarter
|
|
3388
AstraZeneca
AZN
$268B
| $1.47M | ﹤0.01% |
+7,754
| New | +$1.46M |
2026 Q2
0 quarters
|
|
3389
CALL
Atlas Energy Solutions
AESI
$1.08B
| $1.47M | ﹤0.01% |
88,500
+53,200
| +151% | +$870K |
2025 Q1
5 quarters
|
|
3390
CALL
SouthState Bank Corp
SSB
$10.2B
| $1.47M | ﹤0.01% |
+14,700
| New | +$1.42M |
2026 Q2
0 quarters
|
|
|
3391
CALL
JBT Marel
JBTM
$5.69B
| $1.46M | ﹤0.01% |
10,100
+4,700
| +87% | +$609K |
2026 Q1
1 quarter
|
|
3392
CALL
Parsons
PSN
$5.11B
| $1.46M | ﹤0.01% |
27,900
+9,600
| +52% | +$519K |
2025 Q1
5 quarters
|
|
3393
CALL
TSS Inc
TSSI
$201M
| $1.46M | ﹤0.01% |
118,800
-46,900
| -28% | -$632K |
2025 Q4
2 quarters
|
|
3394
CALL
PTC Therapeutics
PTCT
$5.26B
| $1.46M | ﹤0.01% |
17,900
+9,400
| +111% | +$679K |
2026 Q1
1 quarter
|
|
3395
Kinsale Capital Group
KNSL
$8.9B
| $1.46M | ﹤0.01% |
+4,427
| New | +$1.42M |
2026 Q2
0 quarters
|
|
3396
CALL
Loar Holdings
LOAR
$6.07B
| $1.46M | ﹤0.01% |
18,100
+8,800
| +95% | +$561K |
2026 Q1
1 quarter
|
|
3397
CALL
Lineage Inc
LINE
$7.99B
| $1.46M | ﹤0.01% |
33,700
+6,200
| +23% | +$244K |
2025 Q3
3 quarters
|
|
3398
CALL
Materion
MTRN
$4.57B
| $1.46M | ﹤0.01% |
+4,900
| New | +$1.03M |
2026 Q2
0 quarters
|
|
3399
PUT
LendingTree
TREE
$387M
| $1.46M | ﹤0.01% |
32,900
+20,100
| +157% | +$812K |
2026 Q1
1 quarter
|
|
3400
Five Below
FIVE
$12.4B
| $1.45M | ﹤0.01% |
8,091
-10,080
| -55% | -$2.17M |
2025 Q4
2 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.