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 | |
|---|---|---|---|---|---|---|---|
|
151
Amazon
AMZN
$2.83T
| $387M | 0.09% |
1,624,795
+1,359,073
| +511% | +$341M |
2026 Q1
1 quarter
|
|
152
PUT
Berkshire Hathaway Class B
BRK.B
$1.16T
| $381M | 0.09% |
761,600
-131,600
| -15% | -$63.3M |
2024 Q1
9 quarters
|
|
153
PUT
Salesforce
CRM
$200B
| $377M | 0.09% |
2,408,700
+522,200
| +28% | +$91.8M |
2018 Q4
30 quarters
|
|
154
CALL
Cisco
CSCO
$421B
| $370M | 0.09% |
3,150,400
+908,400
| +41% | +$95M |
2018 Q4
30 quarters
|
|
155
CALL
Datadog
DDOG
$92.1B
| $367M | 0.09% |
1,410,900
+413,300
| +41% | +$76.8M |
2020 Q1
25 quarters
|
|
|
156
PUT
iShares Bitcoin Trust
IBIT
$66.4B
| $367M | 0.09% |
11,019,300
-333,200
| -3% | -$13.6M |
2025 Q4
2 quarters
|
|
157
CALL
Vertiv
VRT
$78.4B
| $361M | 0.09% |
1,077,500
-95,100
| -8% | -$30.2M |
2023 Q3
11 quarters
|
|
158
PUT
Mercado Libre
MELI
$95.3B
| $351M | 0.08% |
206,800
+20,000
| +11% | +$34.2M |
2021 Q3
19 quarters
|
|
159
PUT
iShares Morningstar Value ETF
ILCV
$1.38B
| $348M | 0.08% |
4,219,500
-3,298,500
| -44% | -$328M |
2021 Q4
18 quarters
|
|
|
160
iShares MSCI South Korea ETF
EWY
$22.2B
| $337M | 0.08% |
1,667,108
+1,577,391
| +1,758% | +$278M |
2026 Q1
1 quarter
|
|
161
CALL
AST SpaceMobile
ASTS
$12.3B
| $334M | 0.08% |
3,763,000
+601,100
| +19% | +$52.4M |
2024 Q2
8 quarters
|
|
162
CALL
Citigroup
C
$206B
| $333M | 0.08% |
2,381,600
-892,400
| -27% | -$116M |
2018 Q4
30 quarters
|
|
163
PUT
Visa
V
$763B
| $333M | 0.08% |
970,300
+165,700
| +21% | +$53.2M |
2018 Q4
30 quarters
|
|
164
Sprott Physical Silver Trust
PSLV
$11.8B
| $326M | 0.08% |
17,254,071
+4,400,600
| +34% | +$104M |
2025 Q4
2 quarters
|
|
|
165
Tesla
TSLA
$1.48T
| $321M | 0.08% |
763,327
-637,019
| -45% | -$253M |
2024 Q2
8 quarters
|
|
166
PUT
Adobe
ADBE
$100B
| $320M | 0.08% |
1,558,400
+231,000
| +17% | +$54.7M |
2018 Q4
30 quarters
|
|
167
PUT
State Street Materials Select Sector SPDR ETF
XLB
$8.1B
| $318M | 0.08% |
5,959,500
-2,191,700
| -27% | -$112M |
2021 Q4
18 quarters
|
|
168
CALL
State Street SPDR NYSE Technology ETF
XNTK
$1.95B
| $315M | 0.08% |
3,100,800
+104,300
| +3% | +$34.9M |
2021 Q4
18 quarters
|
|
169
CALL
GE Aerospace
GE
$311B
| $309M | 0.07% |
827,800
+235,200
| +40% | +$73.6M |
2022 Q2
16 quarters
|
|
170
PUT
Rocket Lab Corp
RKLB
$32.5B
| $308M | 0.07% |
3,034,600
+1,429,500
| +89% | +$142M |
2025 Q4
2 quarters
|
|
|
171
PUT
GE Aerospace
GE
$311B
| $306M | 0.07% |
818,900
+306,500
| +60% | +$96M |
2022 Q2
16 quarters
|
|
172
PUT
ServiceNow
NOW
$155B
| $302M | 0.07% |
3,038,000
+58,600
| +2% | +$5.8M |
2019 Q4
26 quarters
|
|
173
PUT
Reddit
RDDT
$29.9B
| $300M | 0.07% |
1,727,700
+237,600
| +16% | +$38.1M |
2024 Q1
9 quarters
|
|
174
PUT
CoreWeave
CRWV
$34.3B
| $296M | 0.07% |
2,971,700
-222,300
| -7% | -$24M |
2025 Q4
2 quarters
|
|
175
CALL
Carvana
CVNA
$66.3B
| $293M | 0.07% |
4,450,400
-3,335,600
| -43% | -$236M |
2020 Q3
23 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.