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 | |
|---|---|---|---|---|---|---|---|
126
PUT
Coinbase
COIN
$47.2B
| $488M | 0.12% |
3,339,600
+705,700
| +27% | +$127M |
2022 Q2
16 quarters
|
|
127
CALL
Berkshire Hathaway Class B
BRK.B
$1.16T
| $487M | 0.12% |
973,300
-502,200
| -34% | -$241M |
2024 Q1
9 quarters
|
|
128
PUT
Astera Labs
ALAB
$50.2B
| $486M | 0.12% |
1,006,100
+402,600
| +67% | +$107M |
2024 Q1
9 quarters
|
|
129
CALL
Rocket Lab Corp
RKLB
$34B
| $483M | 0.12% |
4,747,700
+1,975,400
| +71% | +$197M |
2025 Q4
2 quarters
|
|
130
CALL
United States Oil Fund
USO
$1.83B
| $474M | 0.11% |
4,457,700
+553,900
| +14% | +$72.6M |
2018 Q4
30 quarters
|
|
131
CALL
MongoDB
MDB
$31.4B
| $470M | 0.11% |
1,400,700
+471,100
| +51% | +$141M |
2019 Q2
28 quarters
|
|
132
PUT
Vertiv
VRT
$82.3B
| $470M | 0.11% |
1,405,200
-1,084,900
| -44% | -$344M |
2023 Q3
11 quarters
|
|
133
PUT
Snowflake
SNOW
$114B
| $467M | 0.11% |
1,834,600
+562,000
| +44% | +$103M |
2020 Q3
23 quarters
|
|
134
CALL
Visa
V
$767B
| $457M | 0.11% |
1,333,300
+189,100
| +17% | +$60.7M |
2018 Q4
30 quarters
|
|
135
PUT
iShares MSCI Australia ETF
EWA
$1.22B
| $452M | 0.11% |
3,835,200
+752,200
| +24% | +$21.8M |
2021 Q4
18 quarters
|
|
136
CALL
Coherent
COHR
$46.8B
| $447M | 0.11% |
1,132,100
+336,800
| +42% | +$119M |
2023 Q3
11 quarters
|
|
137
CALL
Mercado Libre
MELI
$94.2B
| $440M | 0.11% |
259,500
+19,300
| +8% | +$33M |
2021 Q3
19 quarters
|
|
|
UWC
138
PUT
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $438M | 0.1% |
5,233,600
+840,800
| +19% | +$70.3M |
2021 Q4
18 quarters
|
|
139
PUT
Booking.com
BKNG
$120B
| $437M | 0.1% |
2,451,000
-539,000
| -18% | -$91.9M |
2018 Q4
30 quarters
|
|
140
PUT
State Street SPDR NYSE Technology ETF
XNTK
$1.98B
| $435M | 0.1% |
4,610,800
+17,700
| +0.4% | +$5.92M |
2021 Q4
18 quarters
|
|
141
CALL
Shopify
SHOP
$227B
| $432M | 0.1% |
3,787,200
+1,406,700
| +59% | +$161M |
2019 Q3
27 quarters
|
|
142
CALL
CoreWeave
CRWV
$34.3B
| $431M | 0.1% |
4,326,400
+709,500
| +20% | +$76.6M |
2025 Q4
2 quarters
|
|
143
PUT
Alibaba
BABA
$260B
| $423M | 0.1% |
4,411,700
+495,500
| +13% | +$62.1M |
2018 Q4
30 quarters
|
|
144
CALL
ExxonMobil
XOM
$731B
| $408M | 0.1% |
2,986,700
-1,006,900
| -25% | -$151M |
2018 Q4
30 quarters
|
|
|
145
CALL
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$45.6B
| $403M | 0.1% |
771,000
+62,800
| +9% | +$31.4M |
2018 Q4
30 quarters
|
|
146
PUT
IBM
IBM
$232B
| $400M | 0.1% |
1,422,300
+650,700
| +84% | +$164M |
2022 Q1
17 quarters
|
|
147
CALL
Reddit
RDDT
$30B
| $392M | 0.09% |
2,260,400
+455,400
| +25% | +$72.9M |
2024 Q1
9 quarters
|
|
148
CALL
Pinduoduo
PDD
$112B
| $391M | 0.09% |
5,121,200
+2,323,300
| +83% | +$215M |
2020 Q1
25 quarters
|
|
149
PUT
Citigroup
C
$208B
| $388M | 0.09% |
2,770,500
-70,100
| -2% | -$9.13M |
2018 Q4
30 quarters
|
|
150
PUT
iShares Silver Trust
SLV
$28.1B
| $388M | 0.09% |
7,250,900
+241,200
| +3% | +$16M |
2018 Q4
30 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.