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 | |
|---|---|---|---|---|---|---|
426
CALL
EOG Resources
EOG
$76.2B
| $79.9M | 0.02% |
616,100
+40,200
| +7% | +$5.48M |
|
427
CALL
VanEck Durable High Dividend ETF
DURA
$38.6M
| $79.2M | 0.02% |
277,900
+73,300
| +36% | +$2.75M |
|
428
PUT
Amphenol
APH
$204B
| $79M | 0.02% |
896,400
+22,200
| +3% | +$1.6M |
|
429
CALL
Enphase Energy
ENPH
$4.81B
| $79M | 0.02% |
1,604,500
+590,600
| +58% | +$26.9M |
|
430
CALL
HCA Healthcare
HCA
$87.7B
| $78.7M | 0.02% |
201,800
+117,000
| +138% | +$49.5M |
|
431
PUT
Capital One
COF
$135B
| $78.7M | 0.02% |
392,100
-78,200
| -17% | -$15M |
|
|
SNDK
432
Sandisk
SNDK
$255B
| $78.6M | 0.02% |
34,584
-111,258
| -76% | -$159M |
|
433
CALL
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$7.13B
| $77.7M | 0.02% |
512,900
-48,200
| -9% | -$1.4M |
|
434
CALL
TJX Companies
TJX
$145B
| $77.4M | 0.02% |
510,900
+109,200
| +27% | +$17.3M |
|
|
OKLO
435
PUT
Oklo
OKLO
$7.68B
| $77.3M | 0.02% |
1,477,900
+371,100
| +34% | +$23.2M |
|
|
XYZ
436
PUT
Block Inc
XYZ
$49.7B
| $77.3M | 0.02% |
1,017,100
-304,900
| -23% | -$21.4M |
|
437
CALL
Affirm
AFRM
$24.4B
| $77.1M | 0.02% |
945,000
+34,700
| +4% | +$2.27M |
|
438
CALL
SLB Ltd
SLB
$85.3B
| $77M | 0.02% |
1,657,300
+188,300
| +13% | +$10.1M |
|
439
CALL
Blackstone
BX
$102B
| $76.6M | 0.02% |
651,100
+128,200
| +25% | +$15.4M |
|
440
PUT
KKR & Co
KKR
$96.7B
| $76.3M | 0.02% |
830,900
-134,000
| -14% | -$13M |
|
|
SCIU
441
PUT
DELISTED
Global X Scientific Beta US ETF
SCIU
| $76.2M | 0.02% |
1,291,000
+159,800
| +14% | +$9.44M |
|
442
PUT
Hims & Hers Health
HIMS
$6.47B
| $75.6M | 0.02% |
2,181,700
+26,800
| +1% | +$719K |
|
443
PUT
Agnico Eagle Mines
AEM
$104B
| $75.4M | 0.02% |
486,200
+136,800
| +39% | +$25.3M |
|
|
TLN
444
PUT
Talen Energy Corp
TLN
$15.2B
| $75.4M | 0.02% |
196,200
+93,200
| +90% | +$34.2M |
|
445
PUT
Zoom
ZM
$29.6B
| $75.3M | 0.02% |
873,000
+59,900
| +7% | +$5.66M |
|
446
CALL
ProShares UltraPro Short QQQ
SQQQ
$1.92B
| $75M | 0.02% |
2,065,200
+382,300
| +23% | +$18.4M |
|
447
PUT
Fortinet
FTNT
$115B
| $74.9M | 0.02% |
487,500
+98,400
| +25% | +$11.4M |
|
448
CALL
S&P Global
SPGI
$131B
| $74.8M | 0.02% |
183,700
+25,000
| +16% | +$10.6M |
|
449
PUT
Merck
MRK
$371B
| $74.5M | 0.02% |
579,600
-162,900
| -22% | -$19.1M |
|
450
AST SpaceMobile
ASTS
$18.7B
| $74.3M | 0.02% |
836,000
+806,466
| +2,731% | +$70.3M |
|
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.