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 | |
|---|---|---|---|---|---|---|
1826
CALL
Idexx Laboratories
IDXX
$42.2B
| $7M | ﹤0.01% |
13,300
-1,000
| -7% | -$561K |
|
|
STUB
1827
CALL
StubHub Holdings
STUB
$2.52B
| $7M | ﹤0.01% |
543,700
+401,900
| +283% | +$3.55M |
|
1828
CALL
GeneDx Holdings
WGS
$2.56B
| $7M | ﹤0.01% |
101,900
+38,300
| +60% | +$2.18M |
|
1829
PUT
Sphere Entertainment
SPHR
$5.11B
| $6.99M | ﹤0.01% |
40,400
-10,500
| -21% | -$1.46M |
|
1830
PUT
British American Tobacco
BTI
$119B
| $6.98M | ﹤0.01% |
113,000
+9,100
| +9% | +$549K |
|
1831
PUT
Sprott Uranium Miners ETF
URNM
$2.16B
| $6.97M | ﹤0.01% |
135,800
-4,100
| -3% | -$254K |
|
1832
Hycroft Mining Holding Corp
HYMC
$2.11B
| $6.97M | ﹤0.01% |
297,734
+22,696
| +8% | +$766K |
|
1833
CALL
Camtek
CAMT
$6.8B
| $6.97M | ﹤0.01% |
42,700
+36,200
| +557% | +$6.42M |
|
1834
PUT
Illumina
ILMN
$33B
| $6.95M | ﹤0.01% |
39,500
+2,000
| +5% | +$293K |
|
1835
Northrop Grumman
NOC
$73.2B
| $6.91M | ﹤0.01% |
+13,575
| New | +$7.83M |
|
|
WCC
1836
CALL
WESCO International
WCC
$17.1B
| $6.91M | ﹤0.01% |
20,000
-1,400
| -7% | -$475K |
|
1837
Royal Caribbean
RCL
$70.9B
| $6.9M | ﹤0.01% |
21,727
-34,147
| -61% | -$9.55M |
|
1838
CALL
ASE Group
ASX
$97.7B
| $6.89M | ﹤0.01% |
152,700
+72,500
| +90% | +$2.43M |
|
|
NNE
1839
CALL
Nano Nuclear Energy
NNE
$952M
| $6.89M | ﹤0.01% |
325,700
+190,600
| +141% | +$4.69M |
|
1840
PUT
Canadian Natural Resources
CNQ
$104B
| $6.88M | ﹤0.01% |
174,300
-19,900
| -10% | -$905K |
|
1841
CALL
FuboTV Inc
FUBO
$340M
| $6.88M | ﹤0.01% |
748,200
-273,900
| -27% | -$2.92M |
|
1842
Upstart Holdings
UPST
$2.73B
| $6.87M | ﹤0.01% |
194,041
+139,201
| +254% | +$4.29M |
|
1843
Tractor Supply
TSCO
$18.2B
| $6.86M | ﹤0.01% |
+216,936
| New | +$7.5M |
|
1844
PUT
TE Connectivity
TEL
$60.4B
| $6.85M | ﹤0.01% |
34,000
-36,600
| -52% | -$7.8M |
|
1845
PUT
PENN Entertainment
PENN
$2.29B
| $6.84M | ﹤0.01% |
320,400
+43,700
| +16% | +$783K |
|
1846
PUT
Viking Therapeutics
VKTX
$4.07B
| $6.83M | ﹤0.01% |
175,100
+70,700
| +68% | +$2.28M |
|
1847
Martin Marietta Materials
MLM
$36.6B
| $6.82M | ﹤0.01% |
11,824
+9,824
| +491% | +$5.83M |
|
|
SEI
1848
PUT
Solaris Energy Infrastructure
SEI
$3.62B
| $6.81M | ﹤0.01% |
84,600
-19,500
| -19% | -$1.39M |
|
1849
Nordson
NDSN
$17.7B
| $6.77M | ﹤0.01% |
22,437
+21,472
| +2,225% | +$6.09M |
|
|
AIRL
1850
CALL
DELISTED
Themes Airlines ETF
AIRL
| $6.77M | ﹤0.01% |
233,000
+62,900
| +37% | +$1.83M |
|
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.