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 | |
|---|---|---|---|---|---|---|
401
CALL
Union Pacific
UNP
$172B
| $90M | 0.02% |
330,700
+102,600
| +45% | +$26.9M |
|
402
CALL
Avis
CAR
$4.9B
| $89.6M | 0.02% |
605,900
+405,100
| +202% | +$89.2M |
|
403
CALL
General Motors
GM
$77B
| $88.7M | 0.02% |
1,151,300
+74,300
| +7% | +$5.84M |
|
404
CALL
Lowe's Companies
LOW
$115B
| $88.5M | 0.02% |
401,500
+41,600
| +12% | +$9.45M |
|
|
405
PUT
Lowe's Companies
LOW
$115B
| $88.3M | 0.02% |
400,600
+129,900
| +48% | +$29.5M |
|
406
CALL
Altria Group
MO
$115B
| $88.3M | 0.02% |
1,226,600
+300,500
| +32% | +$21M |
|
407
CALL
Charter Communications
CHTR
$18.1B
| $88.2M | 0.02% |
620,300
+328,100
| +112% | +$54.8M |
|
408
CALL
Marathon Digital Holdings
MARA
$4.37B
| $87.9M | 0.02% |
6,329,700
+1,892,200
| +43% | +$23.7M |
|
409
CALL
Marathon Petroleum
MPC
$109B
| $87.8M | 0.02% |
343,400
+97,900
| +40% | +$24M |
|
410
PUT
DoorDash
DASH
$91.7B
| $86.9M | 0.02% |
470,800
+61,300
| +15% | +$10.1M |
|
411
Costco
COST
$406B
| $86.8M | 0.02% |
92,816
+49,211
| +113% | +$49M |
|
412
CALL
Accenture
ACN
$114B
| $86.4M | 0.02% |
694,400
+41,200
| +6% | +$7.15M |
|
413
CALL
Generac Holdings
GNRC
$11.1B
| $86M | 0.02% |
293,800
+50,700
| +21% | +$12.7M |
|
414
CALL
Wolfspeed
WOLF
$1.47B
| $85.7M | 0.02% |
1,775,400
+1,413,700
| +391% | +$61.5M |
|
415
PUT
Occidental Petroleum
OXY
$60B
| $85.5M | 0.02% |
1,759,400
-233,600
| -12% | -$13.3M |
|
416
PUT
Valero Energy
VLO
$107B
| $85.1M | 0.02% |
326,900
-86,600
| -21% | -$21.3M |
|
417
CALL
Apollo Global Management
APO
$78.9B
| $84.3M | 0.02% |
712,800
+137,800
| +24% | +$17.3M |
|
418
CALL
Workday
WDAY
$47.2B
| $83.4M | 0.02% |
681,600
+65,000
| +11% | +$8.23M |
|
419
CALL
Elevance Health
ELV
$88.4B
| $83.1M | 0.02% |
215,000
-97,200
| -31% | -$36M |
|
420
CALL
ProShares Ultra Bloomberg Natural Gas
BOIL
$399M
| $82.4M | 0.02% |
2,936,200
+1,000,900
| +52% | +$27.5M |
|
421
CALL
Hims & Hers Health
HIMS
$6.47B
| $82.1M | 0.02% |
2,369,400
-373,100
| -14% | -$10M |
|
422
PUT
Airbnb
ABNB
$107B
| $81.9M | 0.02% |
572,600
-130,900
| -19% | -$17.9M |
|
423
CALL
Philip Morris
PM
$284B
| $81.7M | 0.02% |
451,400
-15,400
| -3% | -$2.67M |
|
424
PUT
State Street Health Care Select Sector SPDR ETF
XLV
$44.1B
| $81.1M | 0.02% |
510,900
+221,800
| +77% | +$33M |
|
425
PUT
Procter & Gamble
PG
$340B
| $80.2M | 0.02% |
547,000
+62,800
| +13% | +$9.14M |
|
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.