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 | |
|---|---|---|---|---|---|---|---|
351
PUT
EchoStar
ECHO
$25.9B
| $106M | 0.03% |
1,047,500
+539,500
| +106% | +$65.9M |
2024 Q1
9 quarters
|
|
352
CALL
ConocoPhillips
COP
$181B
| $106M | 0.03% |
1,018,600
-54,200
| -5% | -$6.42M |
2018 Q4
30 quarters
|
|
353
CALL
Charles Schwab
SCHW
$157B
| $106M | 0.03% |
1,145,600
+206,300
| +22% | +$18.8M |
2020 Q4
22 quarters
|
|
354
PUT
Blackrock
BLK
$173B
| $105M | 0.03% |
109,600
+8,200
| +8% | +$8.48M |
2025 Q4
2 quarters
|
|
355
PUT
RTX Corp
RTX
$258B
| $105M | 0.03% |
552,700
+54,900
| +11% | +$10.1M |
2020 Q2
24 quarters
|
|
356
CALL
Rivian
RIVN
$17.1B
| $105M | 0.03% |
6,040,000
+1,386,900
| +30% | +$21.6M |
2022 Q2
16 quarters
|
|
357
PUT
Roblox
RBLX
$37.8B
| $105M | 0.03% |
1,923,900
+29,200
| +2% | +$1.45M |
2021 Q2
20 quarters
|
|
358
CALL
Synopsys
SNPS
$82.4B
| $103M | 0.02% |
231,700
-113,800
| -33% | -$53.5M |
2023 Q3
11 quarters
|
|
359
CALL
Albemarle
ALB
$11.1B
| $103M | 0.02% |
763,900
+18,000
| +2% | +$3.17M |
2023 Q2
12 quarters
|
|
360
CALL
Talen Energy Corp
TLN
$15.5B
| $103M | 0.02% |
268,300
+71,700
| +36% | +$26.3M |
2024 Q4
6 quarters
|
|
361
PUT
ON Semiconductor
ON
$28.1B
| $101M | 0.02% |
1,071,500
+850,100
| +384% | +$87.2M |
2022 Q1
17 quarters
|
|
|
362
CALL
Blackrock
BLK
$173B
| $101M | 0.02% |
105,100
+23,000
| +28% | +$23.8M |
2025 Q4
2 quarters
|
|
363
PUT
IonQ
IONQ
$12.7B
| $100M | 0.02% |
1,876,400
+965,000
| +106% | +$48.9M |
2024 Q1
9 quarters
|
|
364
CALL
Cadence Design Systems
CDNS
$87.2B
| $100M | 0.02% |
266,200
+90,200
| +51% | +$31.6M |
2024 Q1
9 quarters
|
|
365
CALL
Texas Pacific Land
TPL
$23.3B
| $100M | 0.02% |
227,600
+72,300
| +47% | +$29.3M |
2024 Q4
6 quarters
|
|
366
PUT
Roku
ROKU
$23.6B
| $99.2M | 0.02% |
717,900
+146,400
| +26% | +$17.9M |
2019 Q1
29 quarters
|
|
367
Marvell Technology
MRVL
$205B
| $99M | 0.02% |
332,498
+314,772
| +1,776% | +$63.1M |
2025 Q1
5 quarters
|
|
368
PUT
Tower Semiconductor
TSEM
$19B
| $99M | 0.02% |
379,900
-402,200
| -51% | -$96.4M |
2023 Q4
10 quarters
|
|
369
CALL
Zoom
ZM
$27.9B
| $98.9M | 0.02% |
1,145,300
+332,600
| +41% | +$31.4M |
2019 Q2
28 quarters
|
|
370
CALL
Cerebras Systems
CBRS
$26.3B
| $98.3M | 0.02% |
+444,600
| New | +$105M |
2026 Q2
0 quarters
|
|
371
Sprott Physical Gold
PHYS
$14.3B
| $98.1M | 0.02% |
3,250,316
+801,098
| +33% | +$27.3M |
2024 Q3
7 quarters
|
|
372
CALL
Royal Caribbean
RCL
$73.9B
| $97.8M | 0.02% |
308,000
+61,900
| +25% | +$17.3M |
2019 Q4
26 quarters
|
|
373
CALL
Ulta Beauty
ULTA
$26.7B
| $97.7M | 0.02% |
216,600
+26,600
| +14% | +$13.5M |
2018 Q4
30 quarters
|
|
374
PUT
Blackstone
BX
$94.1B
| $97.5M | 0.02% |
828,400
+17,900
| +2% | +$2.15M |
2020 Q1
25 quarters
|
|
375
CALL
Honeywell
HON
$70.1B
| $97.4M | 0.02% |
435,200
-19,400
| -4% | -$4.33M |
2021 Q3
19 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.