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 | |
|---|---|---|---|---|---|---|
501
PUT
iShares MSCI USA Momentum Factor ETF
MTUM
$24.7B
| $64.9M | 0.02% |
189,300
+165,700
| +702% | +$49.4M |
|
|
BMNR
502
CALL
BitMine Immersion Technologies
BMNR
$15.1B
| $64.8M | 0.02% |
4,871,100
+220,300
| +5% | +$4.26M |
|
503
CALL
Invesco S&P SmallCap Low Volatility ETF
XSLV
$245M
| $64.8M | 0.02% |
336,600
-93,800
| -22% | -$4.68M |
|
504
CALL
Semtech
SMTC
$13.8B
| $64.6M | 0.02% |
399,100
+334,100
| +514% | +$43.7M |
|
505
CALL
McKesson
MCK
$106B
| $64.5M | 0.02% |
85,400
+24,300
| +40% | +$19.3M |
|
506
CALL
Roku
ROKU
$23.1B
| $64.5M | 0.02% |
466,700
-285,200
| -38% | -$34.8M |
|
507
PUT
Linde
LIN
$220B
| $64.5M | 0.02% |
124,200
+9,700
| +8% | +$4.91M |
|
|
TEM
508
CALL
Tempus AI
TEM
$11.7B
| $64.4M | 0.02% |
1,112,500
+546,600
| +97% | +$27.4M |
|
509
PUT
RH
RH
$2.8B
| $64.4M | 0.02% |
391,100
-26,400
| -6% | -$3.64M |
|
510
CALL
ARK Innovation ETF
ARKK
$6.44B
| $63.8M | 0.02% |
789,400
+148,600
| +23% | +$11.4M |
|
511
CALL
Live Nation Entertainment
LYV
$40.4B
| $63.3M | 0.02% |
345,900
-16,500
| -5% | -$2.71M |
|
512
PUT
State Street Communication Services Select Sector SPDR ETF
XLC
$22.4B
| $62.9M | 0.02% |
587,300
+521,800
| +797% | +$59.5M |
|
513
CALL
Riot Platforms
RIOT
$8.18B
| $62.8M | 0.02% |
2,295,400
-231,100
| -9% | -$5.21M |
|
514
PUT
Twilio
TWLO
$35.8B
| $62.6M | 0.02% |
303,600
+129,800
| +75% | +$23M |
|
515
CALL
Sea Limited
SE
$68.7B
| $62.5M | 0.01% |
652,500
+74,400
| +13% | +$6.54M |
|
516
CALL
BlackBerry
BB
$4.51B
| $62.3M | 0.01% |
4,923,700
+4,248,200
| +629% | +$29.7M |
|
517
PUT
Philip Morris
PM
$284B
| $62.2M | 0.01% |
343,800
+37,200
| +12% | +$6.45M |
|
518
CALL
T-Mobile US
TMUS
$195B
| $62M | 0.01% |
369,700
-117,800
| -24% | -$22.3M |
|
519
PUT
Union Pacific
UNP
$172B
| $62M | 0.01% |
227,900
-18,700
| -8% | -$4.91M |
|
520
PUT
Fabrinet
FN
$14.6B
| $61.9M | 0.01% |
110,200
+70,600
| +178% | +$45.5M |
|
521
PUT
Domino's
DPZ
$11.3B
| $61.5M | 0.01% |
207,900
+118,700
| +133% | +$39.1M |
|
522
PUT
MP Materials
MP
$9.71B
| $61.5M | 0.01% |
1,097,900
+283,800
| +35% | +$17.3M |
|
523
PUT
Cipher Digital
CIFR
$7.36B
| $60.9M | 0.01% |
2,485,600
+111,400
| +5% | +$2.35M |
|
524
CALL
Expedia Group
EXPE
$35.8B
| $60.2M | 0.01% |
235,300
-87,800
| -27% | -$20.9M |
|
525
PUT
NextEra Energy
NEE
$174B
| $60.2M | 0.01% |
685,800
+182,100
| +36% | +$16.5M |
|
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.