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IMC Chicago

IMC Chicago Portfolio holdings

AUM $419B
1-Year Est. Return 72.04%
 

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.

This Fund
S&P 500
This Quarter Est. Return
+37.99%
1 Year Est. Return
+72.04%
3 Year Est. Return
+250.38%
5 Year Est. Return
+244.63%
10 Year Est. Return
–
AUM
$419B
AUM Growth
+$140B
Cap. Flow
+$2.99B
Cap. Flow %
0.71%
Top 10 Hldgs %
33.71%
Holding
6,955
New
1,282
Increased
3,251
Reduced
1,751
Closed
653

Top Buys

Rank Stock Value
1
DIA icon
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
+$568M
2
AMZN icon
Amazon
AMZN
+$341M
3
EWY icon
iShares MSCI South Korea ETF
EWY
+$278M
4
AAPL icon
Apple
AAPL
+$239M
5
TSM icon
TSMC
TSM
+$215M

Top Sells

Rank Stock Value
1
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$316M
2
TSLA icon
Tesla
TSLA
+$253M
3
MU icon
Micron Technology
MU
+$178M
4
IBIT icon
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
SNBR
6751
PUT
DELISTED
Sleep Number
SNBR
– –
-21,800
Closed -$39.1K
SOXL icon
6752
Direxion Daily Semiconductor Bull 3X ETF
SOXL
$20B
– –
-383,819
Closed -$18.4M
SOXX icon
6753
iShares Semiconductor ETF
SOXX
$42.7B
– –
-22,161
Closed -$7.28M
SPB icon
6754
PUT
Spectrum Brands
SPB
$2.04B
– –
-3,000
Closed -$221K
RNMN
6755
CALL
RiverNorth Market Neutral ETF
RNMN
$7.16M
– –
-139,500
Closed -$536K
RNMN
6756
PUT
RiverNorth Market Neutral ETF
RNMN
$7.16M
– –
-88,300
Closed -$339K
SPH icon
6757
PUT
Suburban Propane Partners
SPH
$1.16B
– –
-10,200
Closed -$201K
SPXL icon
6758
Direxion Daily S&P 500 Bull 3x ETF
SPXL
$7.09B
– –
-22,570
Closed -$4.17M
SPY icon
6759
State Street SPDR S&P 500 ETF Trust
SPY
$816B
– –
-436,397
Closed -$316M
SQNS
6760
CALL
Sequans Communications SA
SQNS
$41.3M
– –
-13,500
Closed -$34.2K
SRE icon
6761
Sempra
SRE
$55B
– –
-8,244
Closed -$767K
SRG
6762
Seritage Growth Properties
SRG
$121M
– –
-20,667
Closed -$54.3K
SRG
6763
PUT
Seritage Growth Properties
SRG
$121M
– –
-12,700
Closed -$35.7K
SRS icon
6764
ProShares UltraShort Real Estate
SRS
$14.5M
– –
-24,782
Closed -$1.18M
SSG icon
6765
ProShares UltraShort Semiconductors
SSG
$35.7M
– –
-59,975
Closed -$979K
SSL icon
6766
Sasol
SSL
$7.81B
– –
-15,443
Closed -$195K
SSL icon
6767
PUT
Sasol
SSL
$7.81B
– –
-10,500
Closed -$136K
SSNC icon
6768
SS&C Technologies
SSNC
$19.5B
– –
-5,131
Closed -$348K
STE icon
6769
Steris
STE
$21.7B
– –
-1,710
Closed -$367K
STRA icon
6770
CALL
Strategic Education
STRA
$1.78B
– –
-5,400
Closed -$448K
SVOL icon
6771
Simplify Volatility Premium ETF
SVOL
$534M
– –
-21,195
Closed -$325K
SYNA icon
6772
Synaptics
SYNA
$3.88B
– –
-5,944
Closed -$671K
TALK
6773
DELISTED
Talkspace
TALK
– –
-20,147
Closed -$104K
TBT icon
6774
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$299M
– –
-12,536
Closed -$441K
TCPC icon
6775
PUT
BlackRock TCP Capital
TCPC
$338M
– –
-33,900
Closed -$122K
269 270
271
272 273

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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.