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 | |
|---|---|---|---|---|---|---|
1976
Madrigal Pharmaceuticals
MDGL
$12.5B
| $5.82M | ﹤0.01% |
10,847
+3,052
| +39% | +$1.56M |
|
1977
PUT
Western Alliance Bancorporation
WAL
$8.83B
| $5.8M | ﹤0.01% |
70,500
+7,300
| +12% | +$576K |
|
|
AMZO
1978
CALL
Tradr 2X Short AMZN Daily ETF
AMZO
$3.1M
| $5.78M | ﹤0.01% |
+192,700
| New | +$3.3M |
|
1979
Thermo Fisher Scientific
TMO
$227B
| $5.78M | ﹤0.01% |
11,538
+2,521
| +28% | +$1.21M |
|
1980
CALL
Plains GP Holdings
PAGP
$5.52B
| $5.77M | ﹤0.01% |
237,800
+63,500
| +36% | +$1.52M |
|
1981
PUT
Saia
SAIA
$9.52B
| $5.77M | ﹤0.01% |
13,700
+2,300
| +20% | +$1.01M |
|
1982
CALL
Sharplink Inc
SBET
$1.88B
| $5.77M | ﹤0.01% |
1,201,300
-18,200
| -1% | -$116K |
|
1983
Bitwise Bitcoin ETF
BITB
$2.95B
| $5.77M | ﹤0.01% |
180,979
-40,374
| -18% | -$1.57M |
|
1984
PUT
Axcelis
ACLS
$3.55B
| $5.76M | ﹤0.01% |
30,400
+16,400
| +117% | +$2.43M |
|
1985
CALL
United States Antimony
UAMY
$778M
| $5.75M | ﹤0.01% |
792,400
+47,500
| +6% | +$430K |
|
|
DENT
1986
PUT
DELISTED
AdvisorShares Dent Tactical ETF
DENT
| $5.75M | ﹤0.01% |
1,183,700
+326,600
| +38% | +$1.59M |
|
|
MRSH
1987
PUT
Marsh
MRSH
$88.6B
| $5.73M | ﹤0.01% |
34,400
+15,000
| +77% | +$2.51M |
|
|
SMU
1988
CALL
Tradr 2X Long SMR Daily ETF
SMU
$55.6M
| $5.73M | ﹤0.01% |
185,100
+5,300
| +3% | +$67.6K |
|
1989
NXP Semiconductors
NXPI
$57.5B
| $5.73M | ﹤0.01% |
+20,381
| New | +$5.62M |
|
|
SOLS
1990
CALL
Solstice Advanced Materials
SOLS
$10.1B
| $5.72M | ﹤0.01% |
64,600
-1,400
| -2% | -$115K |
|
1991
CALL
Arrowhead Research
ARWR
$12.2B
| $5.72M | ﹤0.01% |
+70,200
| New | +$5.19M |
|
1992
Rubrik
RBRK
$19.4B
| $5.7M | ﹤0.01% |
71,035
+24,470
| +53% | +$1.54M |
|
1993
CALL
Otis Worldwide
OTIS
$27.1B
| $5.7M | ﹤0.01% |
79,600
+30,000
| +60% | +$2.24M |
|
1994
CALL
Floor & Decor
FND
$5.35B
| $5.69M | ﹤0.01% |
95,900
-19,000
| -17% | -$962K |
|
1995
CALL
Gildan
GIL
$9.89B
| $5.68M | ﹤0.01% |
110,100
+54,500
| +98% | +$3.13M |
|
1996
CALL
Vishay Precision Group
VPG
$839M
| $5.65M | ﹤0.01% |
37,700
+19,500
| +107% | +$1.81M |
|
|
1997
PUT
Otis Worldwide
OTIS
$27.1B
| $5.65M | ﹤0.01% |
78,900
+25,200
| +47% | +$1.88M |
|
1998
PUT
Peabody Energy
BTU
$3.52B
| $5.65M | ﹤0.01% |
244,200
-201,400
| -45% | -$5.35M |
|
1999
Coupang
CPNG
$27.5B
| $5.65M | ﹤0.01% |
325,014
+274,220
| +540% | +$4.95M |
|
|
WCC
2000
PUT
WESCO International
WCC
$17.1B
| $5.63M | ﹤0.01% |
16,300
+1,000
| +7% | +$339K |
|
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.