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 | |
|---|---|---|---|---|---|---|---|
4176
Cooper Companies
COO
$11.6B
| $760K | ﹤0.01% |
+10,599
| New | +$693K |
2026 Q2
0 quarters
|
|
4177
PUT
Halozyme
HALO
$14.3B
| $759K | ﹤0.01% |
9,700
-10,700
| -52% | -$730K |
2025 Q4
2 quarters
|
|
4178
CALL
JOYY Inc
JOYY
$4.08B
| $759K | ﹤0.01% |
11,500
-28,600
| -71% | -$1.78M |
2026 Q1
1 quarter
|
|
|
4179
PUT
JOYY Inc
JOYY
$4.08B
| $759K | ﹤0.01% |
11,500
+3,600
| +46% | +$224K |
2026 Q1
1 quarter
|
|
4180
PUT
Energizer
ENR
$1.55B
| $757K | ﹤0.01% |
35,300
+11,300
| +47% | +$215K |
2025 Q4
2 quarters
|
|
4181
CALL
StandardAero Inc
SARO
$7.21B
| $757K | ﹤0.01% |
25,300
+4,000
| +19% | +$105K |
2025 Q4
2 quarters
|
|
4182
CALL
Americas Gold and Silver
USAS
$1.04B
| $757K | ﹤0.01% |
160,300
+46,200
| +40% | +$267K |
2026 Q1
1 quarter
|
|
4183
PUT
Genmab
GMAB
$26.9B
| $755K | ﹤0.01% |
+27,500
| New | +$731K |
2026 Q2
0 quarters
|
|
4184
PUT
Intellia Therapeutics
NTLA
$1.57B
| $755K | ﹤0.01% |
44,600
-41,100
| -48% | -$575K |
2025 Q4
2 quarters
|
|
4185
PUT
Uniti Group
UNIT
$1.23B
| $754K | ﹤0.01% |
65,700
+24,300
| +59% | +$276K |
2025 Q4
2 quarters
|
|
4186
Richtech Robotics
RR
$261M
| $753K | ﹤0.01% |
356,889
+300,954
| +538% | +$731K |
2025 Q3
3 quarters
|
|
4187
PUT
Fortuna Silver Mines
FSM
$2.72B
| $753K | ﹤0.01% |
89,100
-21,600
| -20% | -$209K |
2024 Q2
8 quarters
|
|
4188
CALL
Invesco DB Base Metals Fund
DBB
$360M
| $752K | ﹤0.01% |
+31,200
| New | +$784K |
2026 Q2
0 quarters
|
|
4189
CALL
Natural Gas Services Group
NGS
$399M
| $751K | ﹤0.01% |
17,400
+8,200
| +89% | +$333K |
2026 Q1
1 quarter
|
|
4190
PUT
PTC
PTC
$21.1B
| $750K | ﹤0.01% |
6,600
-58,500
| -90% | -$7.9M |
2026 Q1
1 quarter
|
|
4191
Amplify Junior Silver Miners ETF
SILJ
$3B
| $749K | ﹤0.01% |
28,893
+2,309
| +9% | +$68.4K |
2024 Q1
9 quarters
|
|
4192
Advanced Drainage Systems
WMS
$9.8B
| $749K | ﹤0.01% |
+4,771
| New | +$682K |
2026 Q2
0 quarters
|
|
4193
PUT
WaterBridge Infrastructure LLC
WBI
$1.65B
| $747K | ﹤0.01% |
21,800
-7,300
| -25% | -$213K |
2026 Q1
1 quarter
|
|
4194
PUT
Clean Harbors
CLH
$16.8B
| $747K | ﹤0.01% |
2,500
-2,500
| -50% | -$739K |
2026 Q1
1 quarter
|
|
4195
CALL
Stifel
SF
$10B
| $747K | ﹤0.01% |
10,700
-500
| -4% | -$37.3K |
2026 Q1
1 quarter
|
|
4196
PUT
Andersons Inc
ANDE
$2.21B
| $746K | ﹤0.01% |
+10,900
| New | +$792K |
2026 Q2
0 quarters
|
|
4197
CALL
Avantor
AVTR
$11.7B
| $745K | ﹤0.01% |
75,300
+23,000
| +44% | +$198K |
2024 Q1
9 quarters
|
|
4198
DocuSign
DOCU
$15.9B
| $745K | ﹤0.01% |
+16,781
| New | +$787K |
2026 Q2
0 quarters
|
|
4199
CALL
Laureate Education
LAUR
$5.38B
| $745K | ﹤0.01% |
+20,500
| New | +$692K |
2026 Q2
0 quarters
|
|
4200
iShares MSCI ACWI ETF
ACWI
$32.4B
| $745K | ﹤0.01% |
+4,743
| New | +$725K |
2026 Q2
0 quarters
|
|
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.