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 | |
|---|---|---|---|---|---|---|---|
176
CALL
State Street Materials Select Sector SPDR ETF
XLB
$8.1B
| $286M | 0.07% |
5,388,700
-1,022,700
| -16% | -$52.5M |
2021 Q4
18 quarters
|
|
177
PUT
State Street Technology Select Sector SPDR ETF
XLK
$122B
| $273M | 0.07% |
1,432,700
+309,500
| +28% | +$52.9M |
2018 Q4
30 quarters
|
|
178
PUT
Spotify
SPOT
$108B
| $270M | 0.06% |
587,600
+23,500
| +4% | +$11.2M |
2018 Q4
30 quarters
|
|
179
PUT
Cisco
CSCO
$421B
| $267M | 0.06% |
2,271,800
+1,266,600
| +126% | +$132M |
2018 Q4
30 quarters
|
|
180
CALL
Roundhill Daily 2X Long Magnificent Seven ETF
MAGX
$66.9M
| $265M | 0.06% |
+3,588,600
| New | +$196M |
2026 Q2
0 quarters
|
|
181
CALL
Arista Networks
ANET
$229B
| $265M | 0.06% |
1,559,400
+257,000
| +20% | +$40.4M |
2025 Q4
2 quarters
|
|
182
CALL
Walmart Inc
WMT
$935B
| $263M | 0.06% |
2,325,700
+402,800
| +21% | +$50M |
2018 Q4
30 quarters
|
|
183
CALL
Ciena
CIEN
$48.5B
| $263M | 0.06% |
536,300
+113,200
| +27% | +$57.7M |
2018 Q4
30 quarters
|
|
|
184
CALL
Spotify
SPOT
$108B
| $262M | 0.06% |
570,200
+67,900
| +14% | +$32.4M |
2018 Q4
30 quarters
|
|
185
CALL
Teradyne
TER
$52.6B
| $261M | 0.06% |
538,500
+217,000
| +67% | +$81.9M |
2024 Q1
9 quarters
|
|
186
PUT
Datadog
DDOG
$92.1B
| $259M | 0.06% |
995,500
+482,700
| +94% | +$89.7M |
2020 Q1
25 quarters
|
|
187
PUT
Credo Technology Group
CRDO
$32.2B
| $259M | 0.06% |
952,600
+177,500
| +23% | +$35.1M |
2024 Q1
9 quarters
|
|
188
PUT
First Solar
FSLR
$18.7B
| $257M | 0.06% |
1,089,500
-560,800
| -34% | -$131M |
2019 Q4
26 quarters
|
|
189
PUT
Iris Energy
IREN
$10.5B
| $252M | 0.06% |
5,521,000
+1,755,000
| +47% | +$91.3M |
2024 Q1
9 quarters
|
|
190
CALL
Super Micro Computer
SMCI
$21.3B
| $252M | 0.06% |
8,597,900
+987,100
| +13% | +$31.4M |
2025 Q4
2 quarters
|
|
191
ASML
ASML
$629B
| $251M | 0.06% |
126,416
+74,547
| +144% | +$119M |
2026 Q1
1 quarter
|
|
192
CALL
Bank of America
BAC
$354B
| $250M | 0.06% |
4,392,800
+99,400
| +2% | +$5.29M |
2018 Q4
30 quarters
|
|
193
PUT
Lockheed Martin
LMT
$127B
| $250M | 0.06% |
490,400
+86,800
| +22% | +$46.9M |
2019 Q2
28 quarters
|
|
|
194
CALL
Credo Technology Group
CRDO
$32.2B
| $249M | 0.06% |
916,800
+403,000
| +78% | +$79.6M |
2024 Q1
9 quarters
|
|
|
195
PUT
Super Micro Computer
SMCI
$21.3B
| $249M | 0.06% |
8,489,200
+2,394,400
| +39% | +$76.3M |
2025 Q4
2 quarters
|
|
196
PUT
Mastercard
MA
$543B
| $248M | 0.06% |
483,700
+42,200
| +10% | +$21M |
2018 Q4
30 quarters
|
|
|
197
Apple
AAPL
$4.95T
| $244M | 0.06% |
842,877
+834,097
| +9,500% | +$239M |
2026 Q1
1 quarter
|
|
198
PUT
Texas Instruments
TXN
$254B
| $240M | 0.06% |
805,100
+351,900
| +78% | +$97.6M |
2018 Q4
30 quarters
|
|
199
PUT
MongoDB
MDB
$29.5B
| $239M | 0.06% |
710,700
+80,100
| +13% | +$24M |
2019 Q2
28 quarters
|
|
|
200
CALL
Lockheed Martin
LMT
$127B
| $238M | 0.06% |
468,100
+96,600
| +26% | +$52.2M |
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.