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 | |
|---|---|---|---|---|---|---|
3126
PUT
Jack Henry & Associates
JKHY
$11.6B
| $1.85M | ﹤0.01% |
13,400
+11,600
| +644% | +$1.65M |
|
3127
CALL
Vanguard Dividend Appreciation ETF
VIG
$113B
| $1.85M | ﹤0.01% |
7,800
-200
| -3% | -$45.9K |
|
|
XE
3128
PUT
X-Energy Inc
XE
$5.09B
| $1.85M | ﹤0.01% |
+100,500
| New | +$2.6M |
|
3129
Sensata Technologies
ST
$6.27B
| $1.84M | ﹤0.01% |
38,636
+21,527
| +126% | +$974K |
|
3130
CALL
Gold Fields
GFI
$42.2B
| $1.84M | ﹤0.01% |
54,900
-42,900
| -44% | -$1.79M |
|
3131
CALL
AAR Corp
AIR
$5.09B
| $1.84M | ﹤0.01% |
12,900
+3,000
| +30% | +$354K |
|
3132
CALL
Xometry
XMTR
$5.3B
| $1.84M | ﹤0.01% |
19,100
+1,100
| +6% | +$78.6K |
|
3133
Klaviyo
KVYO
$5.3B
| $1.84M | ﹤0.01% |
121,976
+61,167
| +101% | +$1.01M |
|
3134
Scorpio Tankers
STNG
$4.12B
| $1.84M | ﹤0.01% |
26,565
-1,219
| -4% | -$95.3K |
|
3135
WEC Energy
WEC
$34.5B
| $1.84M | ﹤0.01% |
15,735
+12,562
| +396% | +$1.43M |
|
3136
Medtronic
MDT
$120B
| $1.83M | ﹤0.01% |
+23,456
| New | +$1.89M |
|
3137
State Street SPDR S&P Capital Markets ETF
KCE
$483M
| $1.83M | ﹤0.01% |
12,454
+4,073
| +49% | +$612K |
|
3138
CALL
Medifast
MED
$141M
| $1.83M | ﹤0.01% |
172,700
+47,800
| +38% | +$551K |
|
|
CRDU
3139
Tradr 2X Long CRDO Daily ETF
CRDU
$45.6M
| $1.83M | ﹤0.01% |
+77,068
| New | +$1.15M |
|
3140
CALL
Alignment Healthcare
ALHC
$2.81B
| $1.83M | ﹤0.01% |
76,800
+51,600
| +205% | +$990K |
|
3141
Welltower
WELL
$170B
| $1.83M | ﹤0.01% |
+8,055
| New | +$1.7M |
|
3142
PUT
Polaris
PII
$3.56B
| $1.83M | ﹤0.01% |
26,700
+7,000
| +36% | +$451K |
|
3143
PUT
Constellium
CSTM
$3.68B
| $1.83M | ﹤0.01% |
57,300
+37,500
| +189% | +$1.21M |
|
3144
CALL
Recursion Pharmaceuticals
RXRX
$1.95B
| $1.83M | ﹤0.01% |
497,400
+230,200
| +86% | +$766K |
|
3145
CALL
Crown Holdings
CCK
$12.5B
| $1.82M | ﹤0.01% |
16,300
-2,700
| -14% | -$273K |
|
3146
InterDigital
IDCC
$8.72B
| $1.82M | ﹤0.01% |
6,437
+5,129
| +392% | +$1.53M |
|
|
SVM
3147
CALL
Silvercorp Metals
SVM
$2.76B
| $1.82M | ﹤0.01% |
180,400
+50,500
| +39% | +$609K |
|
|
STUB
3148
PUT
StubHub Holdings
STUB
$2.52B
| $1.82M | ﹤0.01% |
141,400
+78,000
| +123% | +$688K |
|
3149
Direxion Daily FTSE China Bull 3X ETF
YINN
$676M
| $1.82M | ﹤0.01% |
84,618
+67,553
| +396% | +$2.14M |
|
3150
Acuity Brands
AYI
$10B
| $1.82M | ﹤0.01% |
4,822
+2,864
| +146% | +$849K |
|
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.