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 | |
|---|---|---|---|---|---|---|
3101
CALL
Array Technologies
ARRY
$708M
| $1.89M | ﹤0.01% |
254,900
-16,300
| -6% | -$130K |
|
|
QPUX
3102
CALL
Defiance 2X Daily Long Pure Quantum ETF
QPUX
$32M
| $1.89M | ﹤0.01% |
152,800
-13,300
| -8% | -$405K |
|
|
QNT
3103
CALL
Quantinuum Inc
QNT
$1.83B
| $1.89M | ﹤0.01% |
+23,100
| New | +$1.49M |
|
3104
PUT
Oshkosh
OSK
$9.7B
| $1.89M | ﹤0.01% |
12,300
+1,300
| +12% | +$183K |
|
3105
PUT
Power Integrations
POWI
$2.82B
| $1.88M | ﹤0.01% |
22,500
+6,000
| +36% | +$433K |
|
3106
CALL
Structure Therapeutics
GPCR
$3.38B
| $1.88M | ﹤0.01% |
+35,100
| New | +$1.55M |
|
3107
ProShares UltraPro Short Russell2000
SRTY
$77.4M
| $1.88M | ﹤0.01% |
+87,983
| New | +$2.4M |
|
3108
PUT
Baxter International
BAX
$13.4B
| $1.88M | ﹤0.01% |
88,200
-365,100
| -81% | -$6.8M |
|
3109
CALL
HCI Group
HCI
$2.33B
| $1.88M | ﹤0.01% |
10,700
+4,300
| +67% | +$678K |
|
3110
PUT
EnerSys
ENS
$6.56B
| $1.87M | ﹤0.01% |
8,000
+3,800
| +90% | +$825K |
|
|
ETH
3111
PUT
Grayscale Ethereum Staking Mini ETF Shares
ETH
$2.06B
| $1.87M | ﹤0.01% |
124,400
-23,300
| -16% | -$455K |
|
3112
CALL
Invesco DB Agriculture Fund
DBA
$1.25B
| $1.87M | ﹤0.01% |
70,100
+17,500
| +33% | +$477K |
|
3113
CALL
Sable Offshore Corp
SOC
$909M
| $1.87M | ﹤0.01% |
606,400
+259,300
| +75% | +$3.3M |
|
3114
PUT
Group 1 Automotive
GPI
$3.59B
| $1.86M | ﹤0.01% |
6,400
+4,300
| +205% | +$1.41M |
|
3115
LCI Industries
LCII
$2.49B
| $1.86M | ﹤0.01% |
+17,576
| New | +$1.93M |
|
3116
PUT
Millicom
TIGO
$15.9B
| $1.86M | ﹤0.01% |
20,500
-200
| -1% | -$16.8K |
|
3117
PUT
Leonardo DRS
DRS
$9.77B
| $1.86M | ﹤0.01% |
43,600
+36,900
| +551% | +$1.64M |
|
3118
PUT
Unum
UNM
$15.2B
| $1.86M | ﹤0.01% |
20,800
-25,300
| -55% | -$2.1M |
|
|
ASTX
3119
Tradr 2X Long ASTS Daily ETF
ASTX
$263M
| $1.86M | ﹤0.01% |
67,340
+48,069
| +249% | +$1.69M |
|
|
3120
CALL
Oshkosh
OSK
$9.7B
| $1.86M | ﹤0.01% |
12,100
+500
| +4% | +$70.4K |
|
3121
CALL
McCormick & Company Non-Voting
MKC
$14B
| $1.86M | ﹤0.01% |
36,800
-20,000
| -35% | -$981K |
|
3122
PUT
XP
XP
$10.1B
| $1.86M | ﹤0.01% |
114,100
+35,800
| +46% | +$638K |
|
3123
PUT
GigaCloud Technology
GCT
$1.85B
| $1.85M | ﹤0.01% |
58,600
+23,400
| +66% | +$922K |
|
3124
Corebridge Financial
CRBG
$15.4B
| $1.85M | ﹤0.01% |
64,581
+19,827
| +44% | +$536K |
|
3125
PUT
Limbach Holdings
LMB
$595M
| $1.85M | ﹤0.01% |
24,000
+16,400
| +216% | +$1.36M |
|
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.