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 |
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 | Held Since | |
|---|---|---|---|---|---|---|---|
4526
CALL
Tronox
TROX
$546M
| $553K | ﹤0.01% |
87,800
-3,300
| -4% | -$28K |
2025 Q3
3 quarters
|
|
4527
Procept Biorobotics
PRCT
$1.02B
| $553K | ﹤0.01% |
24,495
+4,598
| +23% | +$115K |
2025 Q4
2 quarters
|
|
4528
PUT
Invesco DB Agriculture Fund
DBA
$1.22B
| $552K | ﹤0.01% |
20,700
-18,500
| -47% | -$505K |
2026 Q1
1 quarter
|
|
4529
PUT
MNTN Inc
MNTN
$756M
| $552K | ﹤0.01% |
60,000
+32,300
| +117% | +$294K |
2026 Q1
1 quarter
|
|
4530
US Global Jets ETF
JETS
$764M
| $552K | ﹤0.01% |
+16,612
| New | +$460K |
2026 Q2
0 quarters
|
|
4531
ARK Blockchain & Fintech Innovation ETF
ARKF
$880M
| $551K | ﹤0.01% |
13,965
-776
| -5% | -$31.6K |
2026 Q1
1 quarter
|
|
4532
PUT
Terra Innovatum Global N.V.
NKLR
$274M
| $551K | ﹤0.01% |
112,000
+53,500
| +91% | +$303K |
2026 Q1
1 quarter
|
|
4533
PUT
HealthEquity
HQY
$7.61B
| $551K | ﹤0.01% |
6,100
+3,200
| +110% | +$271K |
2026 Q1
1 quarter
|
|
4534
PUT
Cognex
CGNX
$9.18B
| $550K | ﹤0.01% |
7,600
-6,400
| -46% | -$388K |
2025 Q4
2 quarters
|
|
4535
CALL
QuidelOrtho
QDEL
$900M
| $550K | ﹤0.01% |
31,400
+10,700
| +52% | +$141K |
2024 Q2
8 quarters
|
|
4536
CALL
Open Text
OTEX
$6.16B
| $549K | ﹤0.01% |
24,800
-300
| -1% | -$6.8K |
2026 Q1
1 quarter
|
|
4537
CALL
Grocery Outlet
GO
$1.28B
| $549K | ﹤0.01% |
55,000
+38,000
| +224% | +$313K |
2026 Q1
1 quarter
|
|
4538
PUT
Defiance Daily Target 2X Long HOOD ETF
HOOX
$11.3M
| $549K | ﹤0.01% |
16,100
+2,500
| +18% | +$65.3K |
2026 Q1
1 quarter
|
|
4539
CALL
GSI Technology
GSIT
$157M
| $548K | ﹤0.01% |
70,900
+28,400
| +67% | +$226K |
2025 Q4
2 quarters
|
|
4540
PUT
Extreme Networks
EXTR
$2.88B
| $547K | ﹤0.01% |
+16,900
| New | +$407K |
2026 Q2
0 quarters
|
|
4541
ProShares Ultra Technology
ROM
$1.22B
| $546K | ﹤0.01% |
+3,520
| New | +$452K |
2026 Q2
0 quarters
|
|
4542
Itron
ITRI
$3.63B
| $544K | ﹤0.01% |
6,291
-11,623
| -65% | -$992K |
2026 Q1
1 quarter
|
|
4543
PUT
Macerich
MAC
$6.53B
| $544K | ﹤0.01% |
21,600
+10,400
| +93% | +$234K |
2026 Q1
1 quarter
|
|
4544
GraniteShares 2x Long AMZN Daily ETF
AMZZ
$48.5M
| $544K | ﹤0.01% |
+17,663
| New | +$619K |
2026 Q2
0 quarters
|
|
4545
PUT
Grand Canyon Education
LOPE
$4.21B
| $544K | ﹤0.01% |
3,800
+500
| +15% | +$79.4K |
2026 Q1
1 quarter
|
|
4546
PennyMac Mortgage Investment
PMT
$603M
| $544K | ﹤0.01% |
48,196
+35,321
| +274% | +$389K |
2026 Q1
1 quarter
|
|
4547
Energy Vault
NRGV
$527M
| $544K | ﹤0.01% |
115,423
+80,104
| +227% | +$358K |
2026 Q1
1 quarter
|
|
4548
CALL
Gemini Space Station
GEMI
$476M
| $544K | ﹤0.01% |
127,600
+9,600
| +8% | +$45.2K |
2025 Q4
2 quarters
|
|
4549
CALL
Ocular Therapeutix
OCUL
$1.51B
| $543K | ﹤0.01% |
55,300
-22,800
| -29% | -$207K |
2025 Q3
3 quarters
|
|
4550
BioMarin Pharmaceuticals
BMRN
$10.6B
| $542K | ﹤0.01% |
9,467
+3,867
| +69% | +$212K |
2026 Q1
1 quarter
|
|
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.