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 | |
|---|---|---|---|---|---|---|
3626
Invesco Senior Loan ETF
BKLN
$6.73B
| $1.2M | ﹤0.01% |
+59,025
| New | +$1.21M |
|
3627
PUT
Genesco
GCO
$398M
| $1.2M | ﹤0.01% |
35,600
-2,900
| -8% | -$102K |
|
3628
CALL
Xenon Pharmaceuticals
XENE
$5.79B
| $1.2M | ﹤0.01% |
19,900
-88,000
| -82% | -$4.89M |
|
3629
PUT
Pinnacle Financial Partners Inc
PNFP
$15.3B
| $1.2M | ﹤0.01% |
11,900
+400
| +3% | +$38.4K |
|
3630
PUT
Global X S&P 500 Tail Risk ETF
XTR
$4.94M
| $1.2M | ﹤0.01% |
20,100
-7,200
| -26% | -$199K |
|
3631
CALL
CryoPort
CYRX
$801M
| $1.2M | ﹤0.01% |
76,400
+58,400
| +324% | +$749K |
|
3632
Allegro MicroSystems
ALGM
$6.82B
| $1.2M | ﹤0.01% |
+17,227
| New | +$806K |
|
3633
PUT
SGHC Ltd
SGHC
$7.11B
| $1.2M | ﹤0.01% |
88,500
+66,200
| +297% | +$839K |
|
3634
CALL
Camping World
CWH
$444M
| $1.2M | ﹤0.01% |
157,100
+32,900
| +26% | +$238K |
|
3635
PUT
Vanguard Morningstar Value ETF
VTV
$193B
| $1.2M | ﹤0.01% |
5,500
-500
| -8% | -$104K |
|
3636
CALL
Altimmune
ALT
$665M
| $1.2M | ﹤0.01% |
394,000
+85,500
| +28% | +$255K |
|
3637
United States Brent Oil Fund
BNO
$696M
| $1.2M | ﹤0.01% |
29,432
-383,322
| -93% | -$19.5M |
|
3638
PUT
Vanguard Consumer Discretionary ETF
VCR
$5.94B
| $1.2M | ﹤0.01% |
7,000
-1,000
| -13% | -$389K |
|
3639
PUT
Entergy
ETR
$51.3B
| $1.19M | ﹤0.01% |
10,400
-5,900
| -36% | -$665K |
|
3640
Kosmos Energy
KOS
$1.66B
| $1.19M | ﹤0.01% |
565,717
+56,844
| +11% | +$158K |
|
3641
PUT
ASP Isotopes
ASPI
$644M
| $1.19M | ﹤0.01% |
191,900
-217,000
| -53% | -$1.28M |
|
3642
PUT
NexGen Energy
NXE
$7.19B
| $1.19M | ﹤0.01% |
127,000
-39,700
| -24% | -$451K |
|
3643
Primoris Services
PRIM
$4.01B
| $1.19M | ﹤0.01% |
12,024
+6,533
| +119% | +$859K |
|
3644
CALL
Smith & Wesson
SWBI
$578M
| $1.19M | ﹤0.01% |
79,200
+15,600
| +25% | +$234K |
|
3645
ProShares Ultra Gold
UGL
$880M
| $1.19M | ﹤0.01% |
27,087
-9,579
| -26% | -$541K |
|
3646
PUT
Build-A-Bear
BBW
$369M
| $1.19M | ﹤0.01% |
38,800
+19,900
| +105% | +$714K |
|
3647
PUT
Braze
BRZE
$3.6B
| $1.18M | ﹤0.01% |
54,600
+3,800
| +7% | +$84.6K |
|
3648
CALL
RUM Group Inc
RUM
$4.26B
| $1.18M | ﹤0.01% |
186,500
-61,200
| -25% | -$435K |
|
3649
PUT
Adeia
ADEA
$2.92B
| $1.18M | ﹤0.01% |
+35,900
| New | +$1.06M |
|
3650
CALL
STAAR Surgical
STAA
$1.18B
| $1.18M | ﹤0.01% |
41,100
-8,500
| -17% | -$236K |
|
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.