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 | |
|---|---|---|---|---|---|---|---|
76
PUT
Strategy Inc
MSTR
$61.7B
| $867M | 0.21% |
9,971,300
+1,937,000
| +24% | +$281M |
2021 Q1
21 quarters
|
|
77
CALL
Lam Research
LRCX
$334B
| $863M | 0.21% |
1,991,000
+383,200
| +24% | +$116M |
2025 Q4
2 quarters
|
|
78
CALL
Arm
ARM
$241B
| $839M | 0.2% |
2,366,800
+8,900
| +0.4% | +$2.37M |
2023 Q3
11 quarters
|
|
79
CALL
Bloom Energy
BE
$66B
| $835M | 0.2% |
2,758,600
+233,600
| +9% | +$59.8M |
2022 Q3
15 quarters
|
|
80
CALL
iShares Silver Trust
SLV
$28.2B
| $827M | 0.2% |
15,471,200
+3,731,100
| +32% | +$247M |
2018 Q4
30 quarters
|
|
81
PUT
Oracle
ORCL
$405B
| $826M | 0.2% |
5,636,500
+980,500
| +21% | +$178M |
2018 Q4
30 quarters
|
|
82
CALL
Nebius Group N.V.
NBIS
$46.5B
| $807M | 0.19% |
2,922,500
+619,400
| +27% | +$123M |
2025 Q4
2 quarters
|
|
83
CALL
GE Vernova
GEV
$241B
| $807M | 0.19% |
686,900
+65,300
| +11% | +$66.6M |
2024 Q2
8 quarters
|
|
84
CALL
Costco
COST
$441B
| $804M | 0.19% |
859,300
+173,100
| +25% | +$172M |
2018 Q4
30 quarters
|
|
85
CALL
JPMorgan Chase
JPM
$894B
| $770M | 0.18% |
2,352,900
+577,300
| +33% | +$179M |
2018 Q4
30 quarters
|
|
86
CALL
Alibaba
BABA
$270B
| $757M | 0.18% |
7,883,500
+70,900
| +0.9% | +$8.88M |
2018 Q4
30 quarters
|
|
87
PUT
Seagate
STX
$154B
| $747M | 0.18% |
774,200
+367,300
| +90% | +$280M |
2022 Q3
15 quarters
|
|
88
CALL
Applovin
APP
$92.7B
| $743M | 0.18% |
1,442,300
-15,600
| -1% | -$7.53M |
2023 Q3
11 quarters
|
|
|
89
PUT
Nebius Group N.V.
NBIS
$46.5B
| $739M | 0.18% |
2,676,800
+1,147,400
| +75% | +$227M |
2025 Q4
2 quarters
|
|
90
CALL
Vanguard S&P 500 ETF
VOO
$1.04T
| $732M | 0.17% |
1,244,300
+471,100
| +61% | +$314M |
2022 Q3
15 quarters
|
|
91
PUT
KLA
KLAC
$213B
| $729M | 0.17% |
2,414,800
+1,060,800
| +78% | +$211M |
2022 Q3
15 quarters
|
|
92
PUT
Palo Alto Networks
PANW
$279B
| $704M | 0.17% |
2,064,100
+236,100
| +13% | +$54M |
2018 Q4
30 quarters
|
|
93
CALL
Robinhood
HOOD
$90B
| $695M | 0.17% |
6,927,100
+321,500
| +5% | +$26.9M |
2022 Q2
16 quarters
|
|
94
CALL
Snowflake
SNOW
$113B
| $683M | 0.16% |
2,684,400
+684,500
| +34% | +$126M |
2020 Q3
23 quarters
|
|
95
PUT
Lumentum
LITE
$75.1B
| $671M | 0.16% |
781,800
+17,800
| +2% | +$15.9M |
2024 Q3
7 quarters
|
|
|
96
PUT
JPMorgan Chase
JPM
$894B
| $661M | 0.16% |
2,020,300
+489,400
| +32% | +$152M |
2018 Q4
30 quarters
|
|
97
CALL
Adobe
ADBE
$99.1B
| $657M | 0.16% |
3,205,600
+874,100
| +37% | +$207M |
2018 Q4
30 quarters
|
|
98
CALL
Qualcomm
QCOM
$187B
| $655M | 0.16% |
3,544,800
+1,998,900
| +129% | +$374M |
2018 Q4
30 quarters
|
|
|
99
CALL
Seagate
STX
$154B
| $651M | 0.16% |
674,800
+332,900
| +97% | +$254M |
2022 Q3
15 quarters
|
|
100
PUT
Boeing
BA
$151B
| $647M | 0.15% |
2,988,100
-55,500
| -2% | -$12.3M |
2018 Q4
30 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.