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 | |
|---|---|---|---|---|---|---|---|
4551
Denison Mines
DNN
$2.05B
| $540K | ﹤0.01% |
176,512
+54,338
| +44% | +$189K |
2024 Q3
7 quarters
|
|
4552
PUT
BillionToOne Inc
BLLN
$4.59B
| $540K | ﹤0.01% |
+4,500
| New | +$411K |
2026 Q2
0 quarters
|
|
4553
iShares Latin America 40 ETF
ILF
$4.09B
| $540K | ﹤0.01% |
+15,987
| New | +$567K |
2026 Q2
0 quarters
|
|
4554
Dolby
DLB
$5.58B
| $539K | ﹤0.01% |
+10,257
| New | +$588K |
2026 Q2
0 quarters
|
|
4555
Beta Technologies Inc
BETA
$4.29B
| $539K | ﹤0.01% |
+32,184
| New | +$536K |
2026 Q2
0 quarters
|
|
4556
PUT
Huazhu Hotels Group
HTHT
$14.7B
| $538K | ﹤0.01% |
12,900
-1,600
| -11% | -$76.3K |
2026 Q1
1 quarter
|
|
4557
PUT
Tradeweb Markets
TW
$23.8B
| $538K | ﹤0.01% |
5,400
+1,400
| +35% | +$152K |
2025 Q3
3 quarters
|
|
4558
CALL
iShares 0-5 Year Investment Grade Corporate Bond ETF
SLQD
$2.43B
| $538K | ﹤0.01% |
7,100
+1,200
| +20% | +$60.4K |
2026 Q1
1 quarter
|
|
4559
Telephone and Data Systems
TDS
$3.93B
| $538K | ﹤0.01% |
+14,538
| New | +$613K |
2026 Q2
0 quarters
|
|
4560
HUB Group
HUBG
$1.6B
| $538K | ﹤0.01% |
+12,285
| New | +$515K |
2026 Q2
0 quarters
|
|
4561
Cohen & Steers
CNS
$3.59B
| $537K | ﹤0.01% |
+7,058
| New | +$499K |
2026 Q2
0 quarters
|
|
4562
Global X Defense Tech ETF
SHLD
$6.52B
| $537K | ﹤0.01% |
8,998
-9,767
| -52% | -$650K |
2025 Q2
4 quarters
|
|
4563
NovaGold Resources
NG
$2.87B
| $537K | ﹤0.01% |
89,988
-25,317
| -22% | -$211K |
2026 Q1
1 quarter
|
|
4564
CALL
American Resources Corp
AREC
$121M
| $537K | ﹤0.01% |
249,800
-36,000
| -13% | -$80.4K |
2025 Q4
2 quarters
|
|
4565
DELISTED
AvalonBay Communities
AVB
| $537K | ﹤0.01% |
2,846
-1,801
| -39% | -$326K |
2026 Q1
1 quarter
|
|
4566
PUT
Tradr 2X Long APP Daily ETF
APPX
$43.5M
| $536K | ﹤0.01% |
4,800
-39,700
| -89% | -$1.51M |
2025 Q4
2 quarters
|
|
4567
PUT
Better Home & Finance Holding
BETR
$193M
| $536K | ﹤0.01% |
19,500
+1,100
| +6% | +$35.6K |
2025 Q4
2 quarters
|
|
4568
JinkoSolar
JKS
$428M
| $536K | ﹤0.01% |
31,901
-22,442
| -41% | -$491K |
2025 Q3
3 quarters
|
|
4569
CALL
Vanguard Long-Term Treasury ETF
VGLT
$10.7B
| $535K | ﹤0.01% |
9,700
-4,100
| -30% | -$225K |
2025 Q2
4 quarters
|
|
4570
CALL
Starling Oncology
STLN
$668M
| $535K | ﹤0.01% |
98,500
+48,000
| +95% | +$202K |
2026 Q1
1 quarter
|
|
4571
PUT
United Natural Foods
UNFI
$2.86B
| $534K | ﹤0.01% |
11,700
-3,700
| -24% | -$183K |
2024 Q3
7 quarters
|
|
4572
iShares Global Clean Energy ETF
ICLN
$2.12B
| $534K | ﹤0.01% |
+26,038
| New | +$540K |
2026 Q2
0 quarters
|
|
4573
PUT
WeRide Inc
WRD
$1.34B
| $533K | ﹤0.01% |
91,600
-61,500
| -40% | -$444K |
2025 Q4
2 quarters
|
|
4574
CALL
W&T Offshore
WTI
$575M
| $533K | ﹤0.01% |
169,200
+67,200
| +66% | +$249K |
2026 Q1
1 quarter
|
|
4575
CALL
Immersion
IMMR
$231M
| $533K | ﹤0.01% |
78,700
+47,400
| +151% | +$299K |
2026 Q1
1 quarter
|
|
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.