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 | |
|---|---|---|---|---|---|---|
4001
Crexendo
CXDO
$200M
| $888K | ﹤0.01% |
+118,927
| New | +$930K |
|
4002
CALL
Flywire
FLYW
$2.26B
| $887K | ﹤0.01% |
50,500
+32,700
| +184% | +$483K |
|
4003
IAMGOLD
IAG
$11.7B
| $887K | ﹤0.01% |
55,999
-27,040
| -33% | -$472K |
|
4004
Harrow
HROW
$1.44B
| $887K | ﹤0.01% |
20,877
-912
| -4% | -$33.9K |
|
4005
CALL
Limbach Holdings
LMB
$595M
| $886K | ﹤0.01% |
11,500
+7,600
| +195% | +$632K |
|
|
KDK
4006
CALL
Kodiak AI
KDK
$766M
| $885K | ﹤0.01% |
174,300
+151,500
| +664% | +$1.13M |
|
4007
CALL
Cimpress
CMPR
$2.13B
| $885K | ﹤0.01% |
+8,700
| New | +$773K |
|
4008
KE Holdings
BEKE
$19.8B
| $884K | ﹤0.01% |
+60,867
| New | +$1M |
|
|
TEN
4009
CALL
Tsakos Energy Navigation Ltd
TEN
$1.32B
| $884K | ﹤0.01% |
25,000
-400
| -2% | -$15.9K |
|
4010
PUT
SBA Communications
SBAC
$20.1B
| $882K | ﹤0.01% |
5,000
-15,800
| -76% | -$3.26M |
|
|
PMT
4011
PUT
PennyMac Mortgage Investment
PMT
$841M
| $882K | ﹤0.01% |
78,200
+26,900
| +52% | +$296K |
|
4012
iShares Russell Mid-Cap ETF
IWR
$56.9B
| $881K | ﹤0.01% |
7,982
+2,022
| +34% | +$213K |
|
4013
PUT
Allison Transmission
ALSN
$10.8B
| $879K | ﹤0.01% |
7,800
+2,900
| +59% | +$352K |
|
4014
GeneDx Holdings
WGS
$2.56B
| $878K | ﹤0.01% |
12,794
+8,151
| +176% | +$463K |
|
4015
CALL
RPM International
RPM
$13.5B
| $878K | ﹤0.01% |
7,900
+3,100
| +65% | +$323K |
|
4016
CALL
Vanguard Morningstar Small-Cap Growth ETF
VBK
$23.9B
| $878K | ﹤0.01% |
2,400
+100
| +4% | +$34.1K |
|
4017
CALL
Cellebrite
CLBT
$2.88B
| $876K | ﹤0.01% |
60,000
+47,800
| +392% | +$632K |
|
4018
Howmet Aerospace
HWM
$103B
| $875K | ﹤0.01% |
3,253
-24,568
| -88% | -$6.31M |
|
4019
CALL
Invitation Homes
INVH
$16.9B
| $873K | ﹤0.01% |
28,900
-20,600
| -42% | -$583K |
|
4020
PUT
Goldman Sachs Access US Aggregate Bond ETF
GCOR
$807M
| $872K | ﹤0.01% |
+14,700
| New | +$605K |
|
4021
CALL
Infosys
INFY
$47.4B
| $871K | ﹤0.01% |
83,000
-35,500
| -30% | -$445K |
|
4022
CALL
MannKind Corp
MNKD
$1.31B
| $870K | ﹤0.01% |
204,300
+175,500
| +609% | +$570K |
|
4023
CALL
Hertz
HTZ
$820M
| $870K | ﹤0.01% |
384,000
+93,800
| +32% | +$512K |
|
4024
PUT
Vanguard FTSE Developed Markets ETF
VEA
$240B
| $869K | ﹤0.01% |
12,200
-5,000
| -29% | -$348K |
|
4025
Southern Copper
SCCO
$168B
| $869K | ﹤0.01% |
+5,048
| New | +$907K |
|
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.