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 |
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 | Held Since | |
|---|---|---|---|---|---|---|---|
4226
PUT
Neighborhood Intelligence Inc
NXH
$180M
| $725K | ﹤0.01% |
125,200
+5,500
| +5% | +$30.2K |
2020 Q3
23 quarters
|
|
4227
PUT
AEVEX Corp
AVEX
$749M
| $725K | ﹤0.01% |
+34,700
| New | +$901K |
2026 Q2
0 quarters
|
|
4228
PUT
ENI
E
$88.9B
| $722K | ﹤0.01% |
15,400
+11,600
| +305% | +$622K |
2026 Q1
1 quarter
|
|
4229
CALL
Grindr
GRND
$2.38B
| $721K | ﹤0.01% |
50,200
+20,100
| +67% | +$260K |
2024 Q4
6 quarters
|
|
4230
Ollie's Bargain Outlet
OLLI
$5.21B
| $721K | ﹤0.01% |
+9,379
| New | +$782K |
2026 Q2
0 quarters
|
|
4231
PUT
St. Joe Company
JOE
$3.85B
| $720K | ﹤0.01% |
11,500
-7,400
| -39% | -$486K |
2025 Q4
2 quarters
|
|
4232
Constellium
CSTM
$3.15B
| $719K | ﹤0.01% |
+22,567
| New | +$729K |
2026 Q2
0 quarters
|
|
4233
CALL
BlueLinx
BXC
$603M
| $718K | ﹤0.01% |
11,600
-11,100
| -49% | -$600K |
2026 Q1
1 quarter
|
|
4234
Leverage Shares 2X Long GLW Daily ETF
GLWG
$53.9M
| $718K | ﹤0.01% |
+15,880
| New | +$418K |
2026 Q2
0 quarters
|
|
4235
PUT
Pinnacle West Capital
PNW
$12.8B
| $717K | ﹤0.01% |
6,700
+200
| +3% | +$20.5K |
2026 Q1
1 quarter
|
|
4236
ProShares Ultra Utilities
UPW
$12.8M
| $717K | ﹤0.01% |
29,832
-3,825
| -11% | -$91.6K |
2025 Q4
2 quarters
|
|
4237
Allient
ALNT
$1.49B
| $716K | ﹤0.01% |
+6,957
| New | +$537K |
2026 Q2
0 quarters
|
|
4238
PUT
Crown Holdings
CCK
$12.8B
| $716K | ﹤0.01% |
6,400
-5,200
| -45% | -$525K |
2025 Q4
2 quarters
|
|
4239
Skyworks Solutions
SWKS
$19.6B
| $716K | ﹤0.01% |
+10,555
| New | +$718K |
2026 Q2
0 quarters
|
|
4240
CALL
EquipmentShare.com Inc
EQPT
$4.06B
| $716K | ﹤0.01% |
+36,400
| New | +$779K |
2026 Q2
0 quarters
|
|
4241
Ziff Davis
ZD
$1.98B
| $715K | ﹤0.01% |
+13,654
| New | +$618K |
2026 Q2
0 quarters
|
|
4242
PUT
Fidelity Enhanced Large Cap Core ETF
FELC
$8.57B
| $714K | ﹤0.01% |
2,500
+1,000
| +67% | +$40.6K |
2026 Q1
1 quarter
|
|
4243
PUT
Carbon Collective Climate Solutions US Equity ETF
CCSO
$43.4M
| $714K | ﹤0.01% |
66,900
+18,700
| +39% | +$524K |
2025 Q2
4 quarters
|
|
4244
CALL
NeoGenomics
NEO
$2.13B
| $713K | ﹤0.01% |
48,900
+20,600
| +73% | +$199K |
2025 Q4
2 quarters
|
|
4245
PUT
Founder-Led ETF
FDRS
$83.9M
| $713K | ﹤0.01% |
+22,300
| New | +$510K |
2026 Q2
0 quarters
|
|
4246
PUT
NewMarket
NEU
$8.01B
| $712K | ﹤0.01% |
900
-1,700
| -65% | -$1.23M |
2026 Q1
1 quarter
|
|
4247
CALL
KULR Technology Group
KULR
$73.6M
| $712K | ﹤0.01% |
186,900
-21,100
| -10% | -$70.3K |
2025 Q4
2 quarters
|
|
4248
CALL
Transportadora de Gas del Sur
TGS
$4.1B
| $711K | ﹤0.01% |
23,900
+15,300
| +178% | +$474K |
2025 Q4
2 quarters
|
|
4249
PUT
Ivanhoe Electric
IE
$1.25B
| $710K | ﹤0.01% |
73,900
-195,100
| -73% | -$2.46M |
2025 Q3
3 quarters
|
|
4250
CALL
Buckle
BKE
$2.4B
| $709K | ﹤0.01% |
16,800
+5,100
| +44% | +$252K |
2026 Q1
1 quarter
|
|
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.