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 | |
|---|---|---|---|---|---|---|
5701
PUT
Horizon Technology Finance
HRZN
$324M
| $191K | ﹤0.01% |
40,400
-22,100
| -35% | -$95.6K |
|
|
KDK
5702
Kodiak AI
KDK
$766M
| $191K | ﹤0.01% |
+37,551
| New | +$281K |
|
|
SUPV
5703
PUT
Grupo Supervielle
SUPV
$770M
| $190K | ﹤0.01% |
19,700
-400
| -2% | -$3.7K |
|
5704
PUT
Radiant Logistics
RLGT
$395M
| $190K | ﹤0.01% |
20,100
-4,200
| -17% | -$35.4K |
|
5705
CALL
ProShares Ultra Bitcoin ETF
BITU
$524M
| $190K | ﹤0.01% |
23,400
-20,500
| -47% | -$262K |
|
5706
LSB Industries
LXU
$814M
| $190K | ﹤0.01% |
17,562
-27,387
| -61% | -$366K |
|
|
5707
Horizon Technology Finance
HRZN
$324M
| $190K | ﹤0.01% |
40,074
-21,721
| -35% | -$93.9K |
|
5708
Avantor
AVTR
$10.1B
| $189K | ﹤0.01% |
19,126
-35,138
| -65% | -$302K |
|
5709
PUT
Telus
TU
$15.2B
| $189K | ﹤0.01% |
17,900
+7,600
| +74% | +$92.7K |
|
|
TTAM
5710
PUT
Titan America SA
TTAM
$2.85B
| $188K | ﹤0.01% |
+10,100
| New | +$166K |
|
5711
Stratasys
SSYS
$701M
| $188K | ﹤0.01% |
+21,913
| New | +$192K |
|
5712
QuidelOrtho
QDEL
$958M
| $188K | ﹤0.01% |
+10,707
| New | +$141K |
|
|
TDAY
5713
CALL
USA Today Co
TDAY
$929M
| $187K | ﹤0.01% |
+21,900
| New | +$165K |
|
5714
Future Fuel
FF
$231M
| $187K | ﹤0.01% |
41,392
+27,264
| +193% | +$117K |
|
|
KC
5715
CALL
Kingsoft Cloud Holdings
KC
$3.28B
| $186K | ﹤0.01% |
20,600
-115,700
| -85% | -$1.6M |
|
|
ORC
5716
Orchid Island Capital
ORC
$1.3B
| $186K | ﹤0.01% |
26,747
+3,582
| +15% | +$24.7K |
|
|
ALOY
5717
CALL
REalloys Inc
ALOY
$701M
| $185K | ﹤0.01% |
+12,800
| New | +$146K |
|
5718
Ardelyx
ARDX
$976M
| $185K | ﹤0.01% |
36,248
+11,525
| +47% | +$70.3K |
|
5719
CALL
Blink Charging
BLNK
$85.3M
| $185K | ﹤0.01% |
288,800
+108,200
| +60% | +$78.3K |
|
|
XNET
5720
PUT
Xunlei
XNET
$311M
| $185K | ﹤0.01% |
33,000
+13,400
| +68% | +$77.3K |
|
5721
PUT
Sundial Growers
SNDL
$358M
| $184K | ﹤0.01% |
136,300
-9,400
| -6% | -$13.5K |
|
5722
CALL
Crexendo
CXDO
$200M
| $184K | ﹤0.01% |
+24,600
| New | +$192K |
|
|
EMD
5723
Western Asset Emerging Markets Debt Fund
EMD
$605M
| $184K | ﹤0.01% |
+17,104
| New | +$181K |
|
5724
CALL
Rayonier Advanced Materials
RYAM
$575M
| $183K | ﹤0.01% |
23,300
-48,200
| -67% | -$437K |
|
5725
Inter&Co
INTR
$2.5B
| $183K | ﹤0.01% |
+33,701
| New | +$226K |
|
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.