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 | |
|---|---|---|---|---|---|---|---|
3301
CALL
Backblaze
BLZE
$516M
| $1.61M | ﹤0.01% |
101,200
+90,600
| +855% | +$627K |
2026 Q1
1 quarter
|
|
3302
CALL
ClearPoint Neuro
CLPT
$279M
| $1.6M | ﹤0.01% |
89,800
+25,200
| +39% | +$315K |
2025 Q3
3 quarters
|
|
3303
CALL
EntrepreneurShares Series Trust ERShares Private-Public Crossover ETF
XOVR
$1.45B
| $1.6M | ﹤0.01% |
76,100
+50,200
| +194% | +$959K |
2025 Q4
2 quarters
|
|
3304
Forgent Power Solutions
FPS
$6.65B
| $1.6M | ﹤0.01% |
+28,554
| New | +$1.3M |
2026 Q2
0 quarters
|
|
3305
CALL
NETGEAR
NTGR
$610M
| $1.59M | ﹤0.01% |
68,300
+56,000
| +455% | +$1.39M |
2026 Q1
1 quarter
|
|
3306
Enova International
ENVA
$4.04B
| $1.59M | ﹤0.01% |
+6,624
| New | +$1.14M |
2026 Q2
0 quarters
|
|
3307
PUT
Red Rock Resorts
RRR
$2.93B
| $1.59M | ﹤0.01% |
24,500
+14,400
| +143% | +$819K |
2025 Q4
2 quarters
|
|
3308
CALL
Littelfuse
LFUS
$8.92B
| $1.59M | ﹤0.01% |
+3,500
| New | +$1.52M |
2026 Q2
0 quarters
|
|
|
3309
PUT
Enova International
ENVA
$4.04B
| $1.59M | ﹤0.01% |
6,600
+900
| +16% | +$155K |
2026 Q1
1 quarter
|
|
3310
PUT
Encompass Health
EHC
$12.2B
| $1.59M | ﹤0.01% |
15,700
+4,700
| +43% | +$487K |
2026 Q1
1 quarter
|
|
3311
CALL
Wyndham Hotels & Resorts
WH
$5.37B
| $1.58M | ﹤0.01% |
18,800
+14,900
| +382% | +$1.24M |
2026 Q1
1 quarter
|
|
3312
PUT
Invesco DB US Dollar Index Bullish Fund
UUP
$463M
| $1.58M | ﹤0.01% |
55,600
-140,700
| -72% | -$3.9M |
2020 Q1
25 quarters
|
|
3313
Shell
SHEL
$307B
| $1.58M | ﹤0.01% |
+20,344
| New | +$1.76M |
2026 Q2
0 quarters
|
|
3314
WEX
WEX
$6.73B
| $1.58M | ﹤0.01% |
+11,164
| New | +$1.65M |
2026 Q2
0 quarters
|
|
3315
AAR Corp
AIR
$3.83B
| $1.57M | ﹤0.01% |
11,019
+1,262
| +13% | +$149K |
2025 Q3
3 quarters
|
|
3316
CALL
SLM Corp
SLM
$3.65B
| $1.57M | ﹤0.01% |
60,700
-42,600
| -41% | -$959K |
2023 Q4
10 quarters
|
|
3317
PUT
Commault Systems
CVLT
$7.02B
| $1.57M | ﹤0.01% |
11,100
+2,200
| +25% | +$236K |
2025 Q4
2 quarters
|
|
3318
PUT
Blackstone Secured Lending
BXSL
$5.44B
| $1.57M | ﹤0.01% |
66,300
-54,300
| -45% | -$1.3M |
2025 Q2
4 quarters
|
|
3319
CALL
Landstar System
LSTR
$5.63B
| $1.57M | ﹤0.01% |
7,600
+3,300
| +77% | +$631K |
2026 Q1
1 quarter
|
|
3320
Harmonic Inc
HLIT
$1.1B
| $1.57M | ﹤0.01% |
+96,245
| New | +$1.23M |
2026 Q2
0 quarters
|
|
3321
Harmony Gold Mining
HMY
$9.9B
| $1.57M | ﹤0.01% |
103,100
+62,354
| +153% | +$1.04M |
2026 Q1
1 quarter
|
|
3322
PUT
Keurig Dr Pepper
KDP
$47.2B
| $1.57M | ﹤0.01% |
47,900
-81,300
| -63% | -$2.37M |
2023 Q3
11 quarters
|
|
3323
PUT
Darling Ingredients
DAR
$8.87B
| $1.57M | ﹤0.01% |
28,700
-14,600
| -34% | -$871K |
2024 Q1
9 quarters
|
|
3324
O-I Glass
OI
$994M
| $1.57M | ﹤0.01% |
162,684
+128,572
| +377% | +$1.21M |
2024 Q4
6 quarters
|
|
3325
Concentrix
CNXC
$2.02B
| $1.56M | ﹤0.01% |
+69,847
| New | +$1.82M |
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.