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 | |
|---|---|---|---|---|---|---|---|
4601
PUT
Grupo Cibest SA
CIB
$23.1B
| $516K | ﹤0.01% |
+6,500
| New | +$470K |
2026 Q2
0 quarters
|
|
4602
NXG Cushing Midstream Energy Fund
SRV
$253M
| $516K | ﹤0.01% |
+10,298
| New | +$487K |
2026 Q2
0 quarters
|
|
4603
WeRide Inc
WRD
$1.34B
| $516K | ﹤0.01% |
+88,614
| New | +$640K |
2026 Q2
0 quarters
|
|
4604
PUT
Melco Resorts & Entertainment
MLCO
$1.58B
| $515K | ﹤0.01% |
97,800
+50,900
| +109% | +$284K |
2023 Q3
11 quarters
|
|
4605
CALL
Valvoline
VVV
$4.01B
| $514K | ﹤0.01% |
13,000
+3,900
| +43% | +$136K |
2026 Q1
1 quarter
|
|
4606
Group 1 Automotive
GPI
$2.89B
| $513K | ﹤0.01% |
+1,763
| New | +$578K |
2026 Q2
0 quarters
|
|
4607
PUT
Polestar Automotive Holding UK
PSNY
$641M
| $513K | ﹤0.01% |
27,300
-5,800
| -18% | -$116K |
2025 Q4
2 quarters
|
|
4608
CALL
National Health Investors
NHI
$3.26B
| $511K | ﹤0.01% |
+6,700
| New | +$513K |
2026 Q2
0 quarters
|
|
4609
CALL
Trilogy Metals
TMQ
$428M
| $511K | ﹤0.01% |
145,500
-18,300
| -11% | -$75.3K |
2025 Q4
2 quarters
|
|
4610
PUT
Lightbridge
LTBR
$184M
| $511K | ﹤0.01% |
58,100
-52,700
| -48% | -$594K |
2025 Q1
5 quarters
|
|
4611
Kingsoft Cloud Holdings
KC
$2.54B
| $510K | ﹤0.01% |
+56,378
| New | +$779K |
2026 Q2
0 quarters
|
|
4612
PUT
Immersion
IMMR
$231M
| $510K | ﹤0.01% |
75,300
+51,700
| +219% | +$326K |
2026 Q1
1 quarter
|
|
4613
Albertsons Companies
ACI
$6.35B
| $510K | ﹤0.01% |
37,662
-21,550
| -36% | -$345K |
2026 Q1
1 quarter
|
|
4614
Rithm Capital
RITM
$4.84B
| $509K | ﹤0.01% |
54,250
-75,928
| -58% | -$724K |
2025 Q2
4 quarters
|
|
4615
CALL
Direxion Daily S&P Biotech Bear 3X ETF
LABD
$153M
| $509K | ﹤0.01% |
66,000
+16,700
| +34% | +$225K |
2025 Q4
2 quarters
|
|
4616
CALL
T-REX 2X Long CIFR Daily Target ETF
CIFU
$3.22M
| $509K | ﹤0.01% |
26,800
+2,200
| +9% | +$62.8K |
2026 Q1
1 quarter
|
|
4617
Stifel
SF
$10.2B
| $509K | ﹤0.01% |
7,290
+1,143
| +19% | +$85.2K |
2026 Q1
1 quarter
|
|
4618
CALL
Philips
PHG
$25.2B
| $508K | ﹤0.01% |
18,700
+9,055
| +94% | +$240K |
2025 Q4
2 quarters
|
|
4619
PUT
Nexa Resources
NEXA
$1.66B
| $508K | ﹤0.01% |
41,500
+27,800
| +203% | +$387K |
2026 Q1
1 quarter
|
|
4620
Entravision Communication
EVC
$583M
| $508K | ﹤0.01% |
38,937
+28,932
| +289% | +$205K |
2026 Q1
1 quarter
|
|
4621
PUT
BCE
BCE
$19B
| $508K | ﹤0.01% |
23,600
-5,600
| -19% | -$134K |
2024 Q3
7 quarters
|
|
4622
Banco Santander
SAN
$192B
| $507K | ﹤0.01% |
36,740
+1,417
| +4% | +$17.6K |
2026 Q1
1 quarter
|
|
4623
PUT
MakeMyTrip
MMYT
$4.38B
| $506K | ﹤0.01% |
9,500
-9,400
| -50% | -$428K |
2026 Q1
1 quarter
|
|
4624
iShares MSCI Global Metals & Mining Producers ETF
PICK
$2.36B
| $506K | ﹤0.01% |
+8,695
| New | +$544K |
2026 Q2
0 quarters
|
|
4625
Direxion Daily TSM Bear 1X ETF
TSMZ
$2.77M
| $505K | ﹤0.01% |
+71,232
| New | +$617K |
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.