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 |
SNDK
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 | |
|---|---|---|---|---|---|---|
3251
PUT
ZTO Express
ZTO
$15.9B
| $1.66M | ﹤0.01% |
74,100
+20,100
| +37% | +$479K |
|
3252
CALL
FLEX LNG
FLNG
$1.7B
| $1.66M | ﹤0.01% |
59,100
-22,100
| -27% | -$683K |
|
|
SERV
3253
Serve Robotics
SERV
$429M
| $1.66M | ﹤0.01% |
+251,782
| New | +$2.1M |
|
|
NB
3254
CALL
NioCorp Developments
NB
$601M
| $1.65M | ﹤0.01% |
343,000
-66,300
| -16% | -$363K |
|
3255
PUT
Infosys
INFY
$47.4B
| $1.65M | ﹤0.01% |
157,600
-40,400
| -20% | -$506K |
|
3256
CALL
Vanguard FTSE Developed Markets ETF
VEA
$240B
| $1.65M | ﹤0.01% |
23,200
-5,900
| -20% | -$411K |
|
3257
PUT
Alcon
ALC
$34.1B
| $1.65M | ﹤0.01% |
24,600
+7,900
| +47% | +$553K |
|
3258
CALL
SS&C Technologies
SSNC
$19.6B
| $1.65M | ﹤0.01% |
26,600
+16,600
| +166% | +$1.13M |
|
3259
CALL
Arch Capital
ACGL
$33.5B
| $1.65M | ﹤0.01% |
17,000
+10,200
| +150% | +$962K |
|
3260
Comstock Resources
CRK
$4.48B
| $1.65M | ﹤0.01% |
+110,476
| New | +$1.69M |
|
|
GRRR
3261
PUT
Gorilla Technology Group
GRRR
$379M
| $1.65M | ﹤0.01% |
82,900
+30,500
| +58% | +$459K |
|
3262
PUT
ImmunityBio
IBRX
$8.56B
| $1.65M | ﹤0.01% |
188,100
-65,300
| -26% | -$494K |
|
3263
Root
ROOT
$877M
| $1.65M | ﹤0.01% |
+29,441
| New | +$1.57M |
|
3264
PUT
Roivant Sciences
ROIV
$25.2B
| $1.65M | ﹤0.01% |
46,500
+36,500
| +365% | +$1.08M |
|
3265
PUT
Masco
MAS
$14.3B
| $1.64M | ﹤0.01% |
20,200
+5,400
| +36% | +$377K |
|
3266
PUT
Summit Therapeutics
SMMT
$14B
| $1.64M | ﹤0.01% |
112,800
+57,000
| +102% | +$1.01M |
|
3267
CALL
OR Royalties Inc
OR
$6.99B
| $1.64M | ﹤0.01% |
51,900
+29,900
| +136% | +$1.1M |
|
3268
CALL
Cerence
CRNC
$386M
| $1.64M | ﹤0.01% |
144,900
+73,200
| +102% | +$717K |
|
3269
Starwood Property Trust
STWD
$5.95B
| $1.64M | ﹤0.01% |
100,057
+41,124
| +70% | +$716K |
|
3270
PUT
Indivior Pharmaceuticals
INDV
$4.12B
| $1.64M | ﹤0.01% |
39,900
+14,200
| +55% | +$515K |
|
3271
PUT
TMC The Metals Company
TMC
$1.96B
| $1.64M | ﹤0.01% |
369,500
+66,000
| +22% | +$344K |
|
3272
Cheesecake Factory
CAKE
$5.35B
| $1.64M | ﹤0.01% |
20,568
+2,145
| +12% | +$139K |
|
3273
CALL
Halozyme
HALO
$12.5B
| $1.64M | ﹤0.01% |
20,900
-10,900
| -34% | -$743K |
|
|
HTGCR
3274
CALL
DELISTED
HERCULES TECHNOLOGY GROWTH CAP INC TRANS RGTS TO PUR COM STK
HTGCR
| $1.63M | ﹤0.01% |
103,600
+27,700
| +36% | +$437K |
|
3275
CALL
Cohu
COHU
$2.4B
| $1.63M | ﹤0.01% |
22,100
+3,500
| +19% | +$175K |
|
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.