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 |
SNDK
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 | |
|---|---|---|---|---|---|---|
6126
Health Catalyst
HCAT
$127M
| $56K | ﹤0.01% |
28,163
+9,712
| +53% | +$14K |
|
6127
PUT
Quanterix
QTRX
$127M
| $55.7K | ﹤0.01% |
+12,900
| New | +$41.8K |
|
6128
CALL
Dominari Holdings
DOMH
$50.9M
| $55.6K | ﹤0.01% |
+17,700
| New | +$55.7K |
|
|
RWT
6129
PUT
Redwood Trust
RWT
$567M
| $55.5K | ﹤0.01% |
11,700
-6,700
| -36% | -$36.4K |
|
6130
CALL
Commercial Vehicle Group
CVGI
$132M
| $55.4K | ﹤0.01% |
12,000
+1,600
| +15% | +$7.5K |
|
6131
CALL
Outdoor Holding Co
POWW
$252M
| $55.4K | ﹤0.01% |
24,300
-1,400
| -5% | -$2.88K |
|
6132
CALL
Playboy Inc
PLBY
$140M
| $55.4K | ﹤0.01% |
45,400
-32,700
| -42% | -$49.6K |
|
6133
Vista Gold
VGZ
$327M
| $55.4K | ﹤0.01% |
28,987
-1,898
| -6% | -$4.14K |
|
6134
CALL
Treace Medical Concepts
TMCI
$313M
| $54.9K | ﹤0.01% |
+13,800
| New | +$37.9K |
|
6135
Iovance Biotherapeutics
IOVA
$3.98B
| $54.9K | ﹤0.01% |
+13,200
| New | +$50.1K |
|
|
HUYA
6136
PUT
Huya Inc
HUYA
$484M
| $54K | ﹤0.01% |
23,500
+1,800
| +8% | +$5.1K |
|
6137
CALL
Arbe Robotics
ARBE
$81M
| $54K | ﹤0.01% |
65,100
+8,300
| +15% | +$7.17K |
|
6138
PUT
1stdibs.com
DIBS
$162M
| $53.9K | ﹤0.01% |
+11,000
| New | +$53K |
|
6139
CALL
Kartoon Studios
TOON
$41.1M
| $53.8K | ﹤0.01% |
75,800
+43,100
| +132% | +$30.9K |
|
6140
CALL
Fulcrum Therapeutics
FULC
$294M
| $53.8K | ﹤0.01% |
+14,700
| New | +$89.4K |
|
6141
CALL
Neuronetics
STIM
$219M
| $53.7K | ﹤0.01% |
+41,300
| New | +$60.1K |
|
|
DFDVW
6142
DeFi Development Corp Warrant
DFDVW
$3.44M
| $53.6K | ﹤0.01% |
+18,241
| New | +$8.97K |
|
|
PNNT
6143
PUT
Pennant Park Investment Corp
PNNT
$244M
| $53.4K | ﹤0.01% |
+15,400
| New | +$63.9K |
|
6144
CALL
Banco Bradesco
BBD
$36.7B
| $53.1K | ﹤0.01% |
15,300
-31,100
| -67% | -$114K |
|
|
CMRC
6145
CALL
Commerce.com Inc Series 1
CMRC
$213M
| $53K | ﹤0.01% |
+17,900
| New | +$51.3K |
|
6146
PUT
Evolution Petroleum
EPM
$132M
| $52.6K | ﹤0.01% |
+14,300
| New | +$62.5K |
|
|
AFCG
6147
CALL
AFC Gamma
AFCG
$80.5M
| $52.4K | ﹤0.01% |
16,900
+1,300
| +8% | +$4.08K |
|
|
NXDR
6148
CALL
Nextdoor Holdings
NXDR
$867M
| $52K | ﹤0.01% |
22,900
+10,300
| +82% | +$19.2K |
|
6149
CALL
Sensus Healthcare
SRTS
$52.5M
| $51.9K | ﹤0.01% |
+17,200
| New | +$60.3K |
|
6150
Embecta
EMBC
$329M
| $51.4K | ﹤0.01% |
+15,772
| New | +$86K |
|
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.