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 | |
|---|---|---|---|---|---|---|---|
3426
CALL
Federal Agricultural Mortgage Class A
AGM.A
| $1.41M | ﹤0.01% |
7,100
+3,000
| +73% | +$405K |
2026 Q1
1 quarter
|
|
3427
PUT
Lineage Inc
LINE
$8.05B
| $1.41M | ﹤0.01% |
32,700
-25,600
| -44% | -$1.01M |
2025 Q3
3 quarters
|
|
3428
CALL
York Space Systems
YSS
$867M
| $1.41M | ﹤0.01% |
57,400
+16,200
| +39% | +$503K |
2026 Q1
1 quarter
|
|
3429
StubHub Holdings
STUB
$2.24B
| $1.41M | ﹤0.01% |
+109,676
| New | +$968K |
2026 Q2
0 quarters
|
|
3430
GraniteShares Gold Shares
BAR
$1.3B
| $1.41M | ﹤0.01% |
35,661
+26,728
| +299% | +$1.19M |
2026 Q1
1 quarter
|
|
3431
PUT
Arrow Electronics
ARW
$10.7B
| $1.41M | ﹤0.01% |
+6,600
| New | +$1.32M |
2026 Q2
0 quarters
|
|
3432
CALL
Cabot Corp
CBT
$3.81B
| $1.41M | ﹤0.01% |
15,500
+9,600
| +163% | +$785K |
2026 Q1
1 quarter
|
|
3433
PUT
First Horizon
FHN
$11.1B
| $1.41M | ﹤0.01% |
54,900
+12,900
| +31% | +$315K |
2023 Q3
11 quarters
|
|
3434
State Street SPDR S&P Homebuilders ETF
XHB
$1.58B
| $1.41M | ﹤0.01% |
12,171
-30,268
| -71% | -$3.17M |
2026 Q1
1 quarter
|
|
3435
CALL
Legence Corp
LGN
$2.77B
| $1.41M | ﹤0.01% |
+16,500
| New | +$1.34M |
2026 Q2
0 quarters
|
|
3436
CALL
Life360
LIF
$3.69B
| $1.41M | ﹤0.01% |
25,400
+6,200
| +32% | +$276K |
2026 Q1
1 quarter
|
|
3437
WhiteFiber Inc
WYFI
$388M
| $1.4M | ﹤0.01% |
+36,136
| New | +$874K |
2026 Q2
0 quarters
|
|
3438
PUT
Jumia Technologies
JMIA
$762M
| $1.4M | ﹤0.01% |
198,900
-53,700
| -21% | -$382K |
2020 Q3
23 quarters
|
|
3439
Sharplink Inc
SBET
$1.66B
| $1.4M | ﹤0.01% |
291,679
+164,788
| +130% | +$1.05M |
2025 Q4
2 quarters
|
|
3440
PUT
Universal Health Services
UHS
$11B
| $1.4M | ﹤0.01% |
9,400
+6,100
| +185% | +$991K |
2025 Q1
5 quarters
|
|
3441
Commault Systems
CVLT
$7.02B
| $1.4M | ﹤0.01% |
9,860
+6,571
| +200% | +$706K |
2026 Q1
1 quarter
|
|
3442
CALL
East-West Bancorp
EWBC
$18B
| $1.39M | ﹤0.01% |
10,800
+5,300
| +96% | +$651K |
2026 Q1
1 quarter
|
|
3443
CALL
AutoNation
AN
$5.32B
| $1.39M | ﹤0.01% |
7,500
-4,400
| -37% | -$860K |
2026 Q1
1 quarter
|
|
3444
ProShares Short Russell2000
RWM
$165M
| $1.39M | ﹤0.01% |
104,805
-3,275
| -3% | -$47.1K |
2026 Q1
1 quarter
|
|
3445
CALL
Sarepta Therapeutics
SRPT
$1.87B
| $1.39M | ﹤0.01% |
77,500
-15,300
| -16% | -$289K |
2024 Q4
6 quarters
|
|
3446
CALL
MSC Industrial Direct
MSM
$6.36B
| $1.39M | ﹤0.01% |
11,700
+4,400
| +60% | +$467K |
2025 Q2
4 quarters
|
|
3447
Boost Run Inc
BRUN
$574M
| $1.39M | ﹤0.01% |
+35,814
| New | +$1.11M |
2026 Q2
0 quarters
|
|
3448
Fermi Inc
FRMI
$1.64B
| $1.39M | ﹤0.01% |
+151,607
| New | +$959K |
2026 Q2
0 quarters
|
|
3449
CALL
DELISTED
FIS Knights of Columbus Global Belief ETF
KOCG
| $1.39M | ﹤0.01% |
26,100
-400
| -2% | -$21.3K |
2025 Q4
2 quarters
|
|
3450
GameStop Corp Warrants
GME.WS
| $1.39M | ﹤0.01% |
+62,833
| New | +$212K |
2026 Q2
0 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.