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 | |
|---|---|---|---|---|---|---|
2001
PUT
Synchrony
SYF
$26B
| $5.63M | ﹤0.01% |
74,000
-7,800
| -10% | -$573K |
|
2002
PUT
Champion Homes
SKY
$4.76B
| $5.62M | ﹤0.01% |
63,800
+59,500
| +1,384% | +$4.56M |
|
2003
PUT
abrdn Physical Silver Shares ETF
SIVR
$4.48B
| $5.62M | ﹤0.01% |
100,000
-14,400
| -13% | -$1M |
|
|
KEEL
2004
PUT
Keel Infrastructure Corp
KEEL
$2.14B
| $5.61M | ﹤0.01% |
977,200
+469,900
| +93% | +$2.02M |
|
2005
PUT
TripAdvisor
TRIP
$1.09B
| $5.61M | ﹤0.01% |
408,900
+170,100
| +71% | +$1.92M |
|
2006
PUT
Starwood Property Trust
STWD
$5.95B
| $5.6M | ﹤0.01% |
342,000
+79,800
| +30% | +$1.39M |
|
2007
Direxion Daily S&P 500 Bear 3x ETF
SPXS
$339M
| $5.6M | ﹤0.01% |
211,442
-858,033
| -80% | -$25.3M |
|
2008
CALL
EnerSys
ENS
$6.56B
| $5.59M | ﹤0.01% |
23,900
-17,900
| -43% | -$3.89M |
|
|
BLSH
2009
CALL
Bullish
BLSH
$5.46B
| $5.58M | ﹤0.01% |
238,200
+7,200
| +3% | +$250K |
|
2010
PUT
SSR Mining
SSRM
$7.58B
| $5.57M | ﹤0.01% |
196,900
+42,600
| +28% | +$1.3M |
|
2011
Albemarle
ALB
$14.9B
| $5.57M | ﹤0.01% |
+41,231
| New | +$7.27M |
|
2012
PUT
ARK Genomic Revolution ETF
ARKG
$2B
| $5.56M | ﹤0.01% |
132,100
+17,900
| +16% | +$570K |
|
2013
CALL
Labcorp
LH
$26.5B
| $5.54M | ﹤0.01% |
19,800
+13,500
| +214% | +$3.55M |
|
2014
PUT
Alpha Metallurgical Resources
AMR
$2.86B
| $5.54M | ﹤0.01% |
33,600
+5,900
| +21% | +$1.12M |
|
2015
CALL
NetEase
NTES
$76.4B
| $5.52M | ﹤0.01% |
43,100
-3,700
| -8% | -$437K |
|
2016
PUT
Iridium Communications
IRDM
$5B
| $5.52M | ﹤0.01% |
100,600
+69,800
| +227% | +$2.98M |
|
2017
CALL
Eagle Materials
EXP
$5.97B
| $5.51M | ﹤0.01% |
24,500
+9,400
| +62% | +$1.97M |
|
|
SA
2018
Seabridge Gold
SA
$3.43B
| $5.51M | ﹤0.01% |
214,004
-26,023
| -11% | -$783K |
|
|
VNET
2019
CALL
VNET Group
VNET
$1.81B
| $5.5M | ﹤0.01% |
684,600
+543,900
| +387% | +$4.94M |
|
|
BTC
2020
CALL
Grayscale Bitcoin Mini Trust ETF
BTC
$4.23B
| $5.5M | ﹤0.01% |
211,900
-7,700
| -4% | -$244K |
|
2021
Deckers Outdoor
DECK
$11.7B
| $5.49M | ﹤0.01% |
55,297
+10,508
| +23% | +$1.11M |
|
2022
PUT
Cracker Barrel
CBRL
$1.22B
| $5.47M | ﹤0.01% |
102,600
-57,300
| -36% | -$1.98M |
|
2023
Unusual Machines
UMAC
$1.19B
| $5.46M | ﹤0.01% |
244,748
+212,553
| +660% | +$3.94M |
|
2024
PUT
Ormat Technologies
ORA
$6.48B
| $5.46M | ﹤0.01% |
50,100
+38,800
| +343% | +$4.81M |
|
2025
NextNav
NN
$2.56B
| $5.45M | ﹤0.01% |
305,717
+100,917
| +49% | +$1.95M |
|
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.