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 | |
|---|---|---|---|---|---|---|
5751
Liberty Global Class C
LBTYK
$3.56B
| $174K | ﹤0.01% |
15,788
+575
| +4% | +$6.66K |
|
5752
CALL
Atlas Lithium Corp
ATLX
$100M
| $173K | ﹤0.01% |
47,000
+14,600
| +45% | +$65.1K |
|
5753
CALL
OptimizeRx
OPRX
$148M
| $173K | ﹤0.01% |
30,300
-28,800
| -49% | -$166K |
|
5754
PUT
FTAI Infrastructure
FIP
$403M
| $173K | ﹤0.01% |
37,300
+24,000
| +180% | +$119K |
|
5755
PUT
Nomad Foods
NOMD
$1.63B
| $172K | ﹤0.01% |
15,700
-2,900
| -16% | -$28.8K |
|
5756
Patterson-UTI
PTEN
$4.74B
| $171K | ﹤0.01% |
+18,657
| New | +$208K |
|
|
TWO
5757
PUT
DELISTED
Two Harbors Investment
TWO
| $171K | ﹤0.01% |
13,800
-700
| -5% | -$8.38K |
|
5758
PUT
CryoPort
CYRX
$801M
| $171K | ﹤0.01% |
10,900
-600
| -5% | -$7.7K |
|
|
BTGO
5759
BitGo Holdings
BTGO
$858M
| $171K | ﹤0.01% |
+33,017
| New | +$271K |
|
5760
CALL
Xperi
XPER
$282M
| $170K | ﹤0.01% |
+20,700
| New | +$150K |
|
5761
Byrna Technologies
BYRN
$86.1M
| $170K | ﹤0.01% |
+25,388
| New | +$156K |
|
5762
CALL
Cognyte Software
CGNT
$626M
| $170K | ﹤0.01% |
19,400
-1,600
| -8% | -$15.2K |
|
5763
PUT
BRC Inc
BRCC
$125M
| $170K | ﹤0.01% |
15,340
+11,510
| +301% | +$142K |
|
|
WW
5764
WW International
WW
$180M
| $170K | ﹤0.01% |
+10,644
| New | +$142K |
|
5765
CALL
Lightspeed Commerce
LSPD
$1.36B
| $170K | ﹤0.01% |
+16,200
| New | +$151K |
|
5766
PUT
FIGS
FIGS
$2.4B
| $170K | ﹤0.01% |
16,600
+6,300
| +61% | +$82.8K |
|
5767
CALL
Leslie's
LESL
$5.36M
| $170K | ﹤0.01% |
+16,700
| New | +$65.5K |
|
5768
CALL
AngioDynamics
ANGO
$628M
| $169K | ﹤0.01% |
+13,000
| New | +$148K |
|
5769
PUT
Green Dot
GDOT
$760M
| $169K | ﹤0.01% |
+12,500
| New | +$156K |
|
|
ASM
5770
Avino Silver & Gold Mines
ASM
$1.25B
| $169K | ﹤0.01% |
+26,632
| New | +$180K |
|
5771
Playtika
PLTK
$839M
| $169K | ﹤0.01% |
45,383
-25,588
| -36% | -$88.4K |
|
5772
PUT
Stagwell
STGW
$2.14B
| $169K | ﹤0.01% |
+22,700
| New | +$150K |
|
5773
PUT
AirSculpt Technologies
AIRS
$201M
| $168K | ﹤0.01% |
37,400
+15,300
| +69% | +$62K |
|
5774
PUT
Invesco Mortgage Capital
IVR
$775M
| $168K | ﹤0.01% |
21,300
+8,100
| +61% | +$65.3K |
|
5775
TAL Education Group
TAL
$6.88B
| $166K | ﹤0.01% |
+17,385
| New | +$183K |
|
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.