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 | |
|---|---|---|---|---|---|---|
126
PUT
Coinbase
COIN
$49.2B
| $488M | 0.12% |
3,339,600
+705,700
| +27% | +$127M |
|
127
CALL
Berkshire Hathaway Class B
BRK.B
$1.08T
| $487M | 0.12% |
973,300
-502,200
| -34% | -$241M |
|
128
PUT
Astera Labs
ALAB
$51.5B
| $486M | 0.12% |
1,006,100
+402,600
| +67% | +$107M |
|
129
CALL
Rocket Lab Corp
RKLB
$41.3B
| $483M | 0.12% |
4,747,700
+1,975,400
| +71% | +$197M |
|
130
CALL
United States Oil Fund
USO
$1.92B
| $474M | 0.11% |
4,457,700
+553,900
| +14% | +$72.6M |
|
131
CALL
MongoDB
MDB
$30B
| $470M | 0.11% |
1,400,700
+471,100
| +51% | +$141M |
|
132
PUT
Vertiv
VRT
$105B
| $470M | 0.11% |
1,405,200
-1,084,900
| -44% | -$344M |
|
133
PUT
Snowflake
SNOW
$122B
| $467M | 0.11% |
1,834,600
+562,000
| +44% | +$103M |
|
134
CALL
Visa
V
$702B
| $457M | 0.11% |
1,333,300
+189,100
| +17% | +$60.7M |
|
135
PUT
iShares MSCI Australia ETF
EWA
$1.34B
| $452M | 0.11% |
3,835,200
+752,200
| +24% | +$21.8M |
|
136
CALL
Coherent
COHR
$52.7B
| $447M | 0.11% |
1,132,100
+336,800
| +42% | +$119M |
|
137
CALL
Mercado Libre
MELI
$100B
| $440M | 0.11% |
259,500
+19,300
| +8% | +$33M |
|
|
UWC
138
PUT
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $438M | 0.1% |
5,233,600
+840,800
| +19% | +$70.3M |
|
139
PUT
Booking.com
BKNG
$146B
| $437M | 0.1% |
2,451,000
-539,000
| -18% | -$91.9M |
|
140
PUT
State Street SPDR NYSE Technology ETF
XNTK
$1.99B
| $435M | 0.1% |
4,610,800
+17,700
| +0.4% | +$5.92M |
|
141
CALL
Shopify
SHOP
$187B
| $432M | 0.1% |
3,787,200
+1,406,700
| +59% | +$161M |
|
|
CRWV
142
CALL
CoreWeave
CRWV
$47.3B
| $431M | 0.1% |
4,326,400
+709,500
| +20% | +$76.6M |
|
143
PUT
Alibaba
BABA
$279B
| $423M | 0.1% |
4,411,700
+495,500
| +13% | +$62.1M |
|
144
CALL
ExxonMobil
XOM
$659B
| $408M | 0.1% |
2,986,700
-1,006,900
| -25% | -$151M |
|
|
145
CALL
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $403M | 0.1% |
771,000
+62,800
| +9% | +$31.4M |
|
146
PUT
IBM
IBM
$219B
| $400M | 0.1% |
1,422,300
+650,700
| +84% | +$164M |
|
147
CALL
Reddit
RDDT
$29.6B
| $392M | 0.09% |
2,260,400
+455,400
| +25% | +$72.9M |
|
148
CALL
Pinduoduo
PDD
$116B
| $391M | 0.09% |
5,121,200
+2,323,300
| +83% | +$215M |
|
149
PUT
Citigroup
C
$230B
| $388M | 0.09% |
2,770,500
-70,100
| -2% | -$9.13M |
|
150
PUT
iShares Silver Trust
SLV
$31.9B
| $388M | 0.09% |
7,250,900
+241,200
| +3% | +$16M |
|
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.