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 | |
|---|---|---|---|---|---|---|---|
526
PUT
Williams Companies
WMB
$87.7B
| $60M | 0.01% |
807,000
+614,100
| +318% | +$45.2M |
2022 Q4
14 quarters
|
|
527
Western Digital
WDC
$129B
| $59.9M | 0.01% |
93,724
+18,222
| +24% | +$8.86M |
2026 Q1
1 quarter
|
|
528
CALL
iShares Core MSCI Emerging Markets ETF
IEMG
$149B
| $59.6M | 0.01% |
572,500
+152,600
| +36% | +$12.2M |
2024 Q2
8 quarters
|
|
529
PUT
GraniteShares Bloomberg Commodity Broad Strategy No K-1 ETF
COMB
$162M
| $59.6M | 0.01% |
1,942,100
+528,100
| +37% | +$13.8M |
2024 Q1
9 quarters
|
|
530
PUT
Cerebras Systems
CBRS
$26.3B
| $59.6M | 0.01% |
+269,700
| New | +$63.5M |
2026 Q2
0 quarters
|
|
531
CALL
Cameco
CCJ
$34.2B
| $59M | 0.01% |
579,100
-27,800
| -5% | -$3.12M |
2021 Q1
21 quarters
|
|
532
CALL
BP
BP
$132B
| $59M | 0.01% |
1,596,200
-150,800
| -9% | -$6.62M |
2018 Q4
30 quarters
|
|
533
CALL
Carlyle Group
CG
$13.8B
| $58.9M | 0.01% |
1,399,900
+1,075,800
| +332% | +$50.5M |
2024 Q2
8 quarters
|
|
534
PUT
3M
MMM
$89.5B
| $58.9M | 0.01% |
363,600
+117,100
| +48% | +$17.7M |
2018 Q4
30 quarters
|
|
535
CALL
Upstart Holdings
UPST
$2.31B
| $58.9M | 0.01% |
1,661,500
-96,300
| -5% | -$2.97M |
2021 Q2
20 quarters
|
|
536
KLA
KLAC
$190B
| $58.7M | 0.01% |
194,496
+135,066
| +227% | +$26.8M |
2026 Q1
1 quarter
|
|
537
CALL
Vanguard Information Technology ETF
VGT
$147B
| $58.3M | 0.01% |
487,800
+148,600
| +44% | +$16.3M |
2024 Q1
9 quarters
|
|
538
PUT
AXT Inc
AXTI
$3.42B
| $58.2M | 0.01% |
807,000
+133,900
| +20% | +$12.1M |
2025 Q4
2 quarters
|
|
539
CALL
POET Technologies
POET
$945M
| $58.1M | 0.01% |
5,655,800
+4,645,700
| +460% | +$50.6M |
2024 Q4
6 quarters
|
|
540
PUT
Enphase Energy
ENPH
$4.18B
| $58.1M | 0.01% |
1,180,400
+428,300
| +57% | +$19.5M |
2020 Q3
23 quarters
|
|
541
PUT
Hut 8
HUT
$7.55B
| $57.8M | 0.01% |
500,800
+13,800
| +3% | +$1.34M |
2024 Q4
6 quarters
|
|
542
PUT
Marathon Petroleum
MPC
$128B
| $57.7M | 0.01% |
225,600
+70,100
| +45% | +$17.2M |
2021 Q2
20 quarters
|
|
543
PUT
Alcoa
AA
$10B
| $57.6M | 0.01% |
1,105,400
+164,300
| +17% | +$11M |
2018 Q4
30 quarters
|
|
544
CALL
American Airlines Group
AAL
$8.02B
| $57.5M | 0.01% |
3,184,500
+307,000
| +11% | +$4.11M |
2018 Q4
30 quarters
|
|
545
PUT
Futu Holdings
FUTU
$13.9B
| $56.9M | 0.01% |
607,000
+334,900
| +123% | +$42.9M |
2021 Q1
21 quarters
|
|
546
CALL
Fidelity Wise Origin Bitcoin Fund
FBTC
$15.1B
| $56.8M | 0.01% |
1,112,000
+799,500
| +256% | +$50M |
2025 Q4
2 quarters
|
|
547
CALL
Hewlett Packard
HPE
$75.3B
| $56.7M | 0.01% |
1,256,300
-80,300
| -6% | -$2.9M |
2023 Q3
11 quarters
|
|
548
PUT
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$7.19B
| $56.6M | 0.01% |
368,500
-1,000,800
| -73% | -$29.1M |
2021 Q4
18 quarters
|
|
|
549
PUT
Hewlett Packard
HPE
$75.3B
| $56.4M | 0.01% |
1,250,800
+220,100
| +21% | +$7.95M |
2023 Q3
11 quarters
|
|
550
CALL
General Dynamics
GD
$94.5B
| $55.7M | 0.01% |
157,100
+6,000
| +4% | +$2.06M |
2023 Q1
13 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.