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 | |
|---|---|---|---|---|---|---|
2076
Energy Fuels
UUUU
$3.83B
| $5.12M | ﹤0.01% |
+353,104
| New | +$6.49M |
|
2077
Transocean
RIG
$6.53B
| $5.12M | ﹤0.01% |
1,046,762
+1,003,528
| +2,321% | +$6.27M |
|
2078
CALL
Tidewater
TDW
$4.69B
| $5.11M | ﹤0.01% |
76,700
-46,200
| -38% | -$3.67M |
|
2079
CALL
CoStar Group
CSGP
$12.5B
| $5.11M | ﹤0.01% |
180,300
+1,700
| +1% | +$58.5K |
|
2080
CALL
Root
ROOT
$877M
| $5.11M | ﹤0.01% |
91,300
-24,800
| -21% | -$1.32M |
|
|
BAND
2081
CALL
Bandwidth Inc
BAND
$1.41B
| $5.1M | ﹤0.01% |
+80,500
| New | +$3.61M |
|
2082
PUT
Novanta
NOVT
$5.61B
| $5.09M | ﹤0.01% |
31,400
+7,200
| +30% | +$1.04M |
|
2083
PUT
Lumen
LUMN
$6.98B
| $5.09M | ﹤0.01% |
662,800
+3,300
| +0.5% | +$28.9K |
|
2084
CALL
ProShares UltraPro Short S&P 500
SPXU
$390M
| $5.09M | ﹤0.01% |
137,300
-32,400
| -19% | -$1.34M |
|
2085
PUT
SiriusXM
SIRI
$9.77B
| $5.06M | ﹤0.01% |
171,200
+36,200
| +27% | +$973K |
|
2086
Stryker
SYK
$116B
| $5.05M | ﹤0.01% |
+16,036
| New | +$5.05M |
|
2087
PUT
PPG Industries
PPG
$25B
| $5.05M | ﹤0.01% |
41,600
-7,500
| -15% | -$835K |
|
|
IVSS
2088
CALL
Applied Finance IVS US SMID ETF
IVSS
$28.2M
| $5.04M | ﹤0.01% |
+74,300
| New | +$2.09M |
|
2089
CALL
Lamar Advertising Co
LAMR
$15.3B
| $5.04M | ﹤0.01% |
32,300
+18,200
| +129% | +$2.63M |
|
2090
CALL
Brookfield
BN
$90B
| $5.03M | ﹤0.01% |
118,200
+3,700
| +3% | +$165K |
|
2091
PUT
Restaurant Brands International
QSR
$28B
| $5.03M | ﹤0.01% |
69,400
+8,000
| +13% | +$609K |
|
2092
CALL
Weyerhaeuser
WY
$16.6B
| $5.03M | ﹤0.01% |
209,900
-15,400
| -7% | -$374K |
|
2093
CALL
GDS Holdings
GDS
$6.28B
| $5.01M | ﹤0.01% |
166,900
+80,900
| +94% | +$3.12M |
|
2094
PUT
uniQure
QURE
$3.09B
| $5.01M | ﹤0.01% |
108,800
+40,100
| +58% | +$1.05M |
|
2095
PUT
Targa Resources
TRGP
$62.2B
| $4.99M | ﹤0.01% |
18,600
-1,700
| -8% | -$437K |
|
2096
CALL
Magnite
MGNI
$3.46B
| $4.99M | ﹤0.01% |
262,700
+138,000
| +111% | +$1.98M |
|
|
GRAL
2097
PUT
GRAIL Inc
GRAL
$3.59B
| $4.98M | ﹤0.01% |
72,900
+18,800
| +35% | +$1.11M |
|
2098
PUT
M&T Bank
MTB
$34.6B
| $4.97M | ﹤0.01% |
20,900
+5,900
| +39% | +$1.29M |
|
2099
CALL
Omega Healthcare
OHI
$14.1B
| $4.97M | ﹤0.01% |
104,300
+25,700
| +33% | +$1.19M |
|
2100
PUT
SentinelOne
S
$6.92B
| $4.95M | ﹤0.01% |
291,900
-32,600
| -10% | -$502K |
|
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.