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 | |
|---|---|---|---|---|---|---|---|
3526
Pentair
PNR
$8.83B
| $1.3M | ﹤0.01% |
16,982
+6,769
| +66% | +$535K |
2026 Q1
1 quarter
|
|
3527
Doximity
DOCS
$5.95B
| $1.3M | ﹤0.01% |
+62,758
| New | +$1.39M |
2026 Q2
0 quarters
|
|
3528
CALL
Netskope Inc
NTSK
$9.9B
| $1.3M | ﹤0.01% |
118,900
+39,900
| +51% | +$406K |
2025 Q4
2 quarters
|
|
3529
PUT
BellRing Brands
BRBR
$1.11B
| $1.3M | ﹤0.01% |
100,400
+59,400
| +145% | +$717K |
2025 Q2
4 quarters
|
|
3530
CALL
Zillow
ZG
$7.66B
| $1.3M | ﹤0.01% |
41,400
+31,600
| +322% | +$1.22M |
2026 Q1
1 quarter
|
|
3531
PUT
Energy Vault
NRGV
$464M
| $1.3M | ﹤0.01% |
275,600
+236,000
| +596% | +$1.06M |
2026 Q1
1 quarter
|
|
3532
Highwoods Properties
HIW
$3.37B
| $1.3M | ﹤0.01% |
43,001
-1,633
| -4% | -$42.3K |
2026 Q1
1 quarter
|
|
3533
PUT
Vornado Realty Trust
VNO
$6.5B
| $1.3M | ﹤0.01% |
33,000
+5,000
| +18% | +$162K |
2026 Q1
1 quarter
|
|
3534
CALL
Liberty Global Class A
LBTYA
$2.68B
| $1.3M | ﹤0.01% |
113,900
+31,100
| +38% | +$372K |
2023 Q4
10 quarters
|
|
3535
PUT
OR Royalties Inc
OR
$6.15B
| $1.29M | ﹤0.01% |
40,900
+20,400
| +100% | +$753K |
2025 Q4
2 quarters
|
|
3536
Herc Holdings
HRI
$4.28B
| $1.29M | ﹤0.01% |
8,998
+4,451
| +98% | +$574K |
2026 Q1
1 quarter
|
|
3537
PUT
Advanced Drainage Systems
WMS
$9.8B
| $1.29M | ﹤0.01% |
8,200
+2,100
| +34% | +$300K |
2026 Q1
1 quarter
|
|
3538
PUT
International Seaways
INSW
$5.67B
| $1.29M | ﹤0.01% |
16,800
-2,900
| -15% | -$235K |
2026 Q1
1 quarter
|
|
3539
PUT
TSS Inc
TSSI
$196M
| $1.29M | ﹤0.01% |
104,600
+52,700
| +102% | +$710K |
2025 Q4
2 quarters
|
|
3540
CALL
Vanguard FTSE Europe ETF
VGK
$29.4B
| $1.28M | ﹤0.01% |
14,500
-2,200
| -13% | -$193K |
2026 Q1
1 quarter
|
|
3541
PUT
People Inc
PPLI
$2.87B
| $1.28M | ﹤0.01% |
27,800
-100,000
| -78% | -$4.27M |
2026 Q1
1 quarter
|
|
3542
CALL
HealthEquity
HQY
$8.6B
| $1.28M | ﹤0.01% |
14,200
-800
| -5% | -$67.8K |
2025 Q3
3 quarters
|
|
3543
CALL
Willis Towers Watson
WTW
$30.2B
| $1.28M | ﹤0.01% |
4,900
-2,900
| -37% | -$776K |
2026 Q1
1 quarter
|
|
3544
CALL
CorMedix
CRMD
$612M
| $1.28M | ﹤0.01% |
162,900
+32,000
| +24% | +$253K |
2025 Q4
2 quarters
|
|
3545
PUT
Teucrium Corn Fund
CORN
$116M
| $1.28M | ﹤0.01% |
64,600
-40,300
| -38% | -$721K |
2025 Q4
2 quarters
|
|
3546
CALL
X-Energy Inc
XE
$3.05B
| $1.28M | ﹤0.01% |
+69,500
| New | +$1.8M |
2026 Q2
0 quarters
|
|
3547
CALL
Enova International
ENVA
$4.11B
| $1.28M | ﹤0.01% |
5,300
-200
| -4% | -$34.4K |
2026 Q1
1 quarter
|
|
3548
KBR
KBR
$4.95B
| $1.27M | ﹤0.01% |
36,909
+4,583
| +14% | +$160K |
2026 Q1
1 quarter
|
|
3549
Pony AI Inc
PONY
$2.24B
| $1.27M | ﹤0.01% |
183,264
+87,943
| +92% | +$815K |
2026 Q1
1 quarter
|
|
3550
PUT
Fiverr
FVRR
$304M
| $1.27M | ﹤0.01% |
123,400
+60,700
| +97% | +$645K |
2020 Q4
22 quarters
|
|
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.